Halo (series)



""Thought I'd try shooting my way out. Mix things up a little.""

- Master Chief, summarizing the series in Halo 3

Not to be confused with a Holy Halo, although the parallels are intentional.

Halo is a massive video game series and one of the premiere franchises exclusive to the Xbox. In the 26th century, Earth is at war with a powerful collective of alien races known as The Covenant, who share a fanatical religion and have declared humans a profane race to be wiped out. Bungie Studios created the game series and it has taken on a life of its own, with many Expanded Universe stories and other game genres. The first three FPS games form the main story with the main character, Master Chief, and his vital role in the war. There have also been several Novelizations, which forms the majority of the Backstory, introducing and naming characters, events, and other information that fill in gaps in and between the games.

The core of Halo gameplay revolves around the wrinkles it presents in the First-Person Shooter formula.
 * There is no Hyperspace Arsenal to speak of (although in the first two games, the weapon you didn't have equipped was invisible to other players); you can only carry two different guns at a time. The ammo for each gun is incompatible with any other weapon type (subverting Universal Ammo), which means finding ammo for your assault rifle requires you to find another assault rifle (there are very few ammo stockpiles and for the most part armories are still limited on certain weapons), and you can't reload most of the plasma weapons used by the Covenant. Blatant Item Placement is also averted; you can grab any weapons dropped by anyone. The guns all have different purposes and performance, so adapting your loadout to fit the situation is a smart idea.
 * You have access to three different forms of attack: guns, Pistol-Whipping, and grenades. All three have their own dedicated controller buttons and all three can be used at the same time, with no delays for Real Time Weapon Change. Melee attacks are a One-Hit Kill if delivered from behind (and decent damage from any other angle), while grenades come in "standard frag" and "stick to the target before exploding" varieties, later entries to the series added "sets things on fire," and "shoots spikes" flavors. Each attack is a viable and useful option, and the available tactics are a lot broader when you've got three different triggers to pull.
 * Vehicles are prevalent and are integrated seamlessly into gameplay: if you run across a jeep, or a hoverbike, or a tank, or even a Space Plane, you can jump right in and the game shifts instantly to a third-person perspective, with no Loading Screen or separate map or anything. Relatedly, many of the franchise's campaign levels are absolutely enormous, with some levels largely about driving from Point A to Point B while avoiding enemy fire. While it is possible to finish the level on foot (assuming there aren't any ramps to jump, high spots to get to or timed sections), it is in your best interest to use a vehicle whenever possible.
 * The Player Character has Deflector Shields built into his armor (which is justified perfectly in-universe). If they go down, damage is applied directly to your lifebar, but if you avoid enemy fire for a few seconds, your shields will be restored to full strength. It effectively becomes Regenerating Health, especially in the later games when the underlying lifebar was removed entirely. Because you technically have infinite Hit Points, you can focus on the current engagement without worrying about surviving the entire level on your current lifebar. Of course, Bungie took advantage of that to stage intense and frantic battles, increasing the emphasis on knowing when to retreat and recharge your shields.
 * Movement speed is a lot slower than older shooters, partly to compensate for the inaccuracy of a joystick and partly for more "serious" gameplay. Going by scale, Doomguy moved about 50 miles per hour without strafe running, whilst the Master Chief can't break 23 KPH (despite the Canon tie-in novels announcing that he can run at about 50+ KPH, which is about thirty miles per hour). This is also a product of the wide environments, which often supply multiple ways to complete a level; paying attention to the Scenery Porn is almost mandatory. (Strangely, the Master Chief also has an extremely "floaty" jump, allowing him to clear obstructions taller than himself and hang in the air for a full second.)

As you can see, it's a gameplay style that is both twitchy and cerebral, with room for the guns-blazing approach and significant tactical depth. The style has been preserved, with only a few tweaks for the sequels (Dual-Wielding, new or rebalanced weapons, new vehicles, some power-ups, etc) throughout the franchise... not to mention nearly every modern shooter game since. Its influence can be seen anywhere from Gears of War (which spins the Regenerating Health and Take Cover aspects into a core mechanic) to Left 4 Dead (two weapons; always-accessible melee) to... its own sequels, which, after Halo 3, deliberately stepped back to the style of the original.

The plot is also fairly complex and alongside the gameplay sometimes requires you to engage in atypical combat. The music and voice acting are nothing to sneer at either. What has made the series so longlasting is the multi-player component; starting with Halo 2, the game connected through Xbox Live and brought to Console FPS the kind of multi-player experience which previously could rarely if ever be obtained without a computer.

Halo is one of the best-known Killer Apps. When the original Xbox was announced, there was a lot of skepticism from those who had already experienced the Console Wars and had no reason to believe the Xbox would go anywhere. Their reasoning wasn't inaccurate: Three Is Death in the console market, which (until then) had had trouble supporting even two consoles; and, as released, the Xbox did not (seem to) have anything worth playing. (The fact the original Xbox was an American-made console didn't help, after the disaster the Atari Jaguar was.) But once gamers got their grubby little hands on it, Halo singlehandedly kept Microsoft in the race, with Edge Magazine even going so far as to call it "the most important launch game for any console, ever." All of its sequels have set "biggest-opening-day" records. -


 * Halo: Combat Evolved, the first Halo game, the Combat Evolved tagline now used to differentiate it from the series as a whole.
 * Halo 2, which was originally supposed to be one game, merged with Halo 3.
 * Halo 3, the conclusion of the original trilogy and the climax of the Covenant war.
 * Halo 3 ODST, takes place during Halo 3, which was always planned as a DLC, but it grew to become its own game.
 * Halo: Reach, a prequel to the original, but never planned.
 * Halo 4, the first part of "The Reclaimer Trilogy".

Reach is Bungie's last Halo project, with Microsoft opening "343 Industries", tasked with managing the Halo franchise. There are also several novels and a comic book series to make up the Expanded Universe. The exact future of the Halo universe both in video games and other forms of media is the subject of much speculation.

At the 2011 E3 convention, two new Halo games were announced. One is an Updated Rerelease/Video Game Remake of the original Halo: Combat Evolved, titled Halo: Anniversary, which will contain updated graphics and campaign and use the Halo: Reach engine for online multi-player play. The second game is the next chapter in the Halo series, Halo 4.


 * Halo Wars


 * The Fall of Reach, a prequel to Combat Evolved and the book that spawned the expanded universe, written concurrently with the original game.
 * The Flood, a novelization of Combat Evolved which expands on the events on the first Halo ring.
 * First Strike, bridges the events of Combat Evolved and Halo 2.
 * Ghosts of Onyx, continues the story of the characters from First Strike and introduces the Spartan-III program. Most of the events take place concurrently with Halo 2.
 * Contact Harvest, a prequel that showcases first contact with the Covenant and the start of the Human-Covenant war.
 * The Cole Protocol, a standalone story that focuses on the events in the Outer Colonies early on in the Covenant war.
 * Halo Evolutions, an anthology of short stories by several authors.
 * The Forerunner Saga, a trilogy of novels that document the fall of the Forerunner empire through the eyes of several characters.
 * Cryptum
 * Primordium
 * Kilo-Five trilogy, a novel series to bridge Halo 3 and Halo 4.
 * Glasslands
 * The Thursday War


 * I Love Bees
 * Iris


 * Halo Legends, an Anime Miniseries
 * Red vs. Blue, a Fan Work that has since become a lucrative franchise in its own right, with Rooster Teeth being recruited by Bungie themselves to promote the newer games and reveal new features, as well as having an Easter Egg Cameo in Halo 3 and the Grifball game mode.

There is also a fan game, called Halo Zero, which has its own page, and a Retraux Atari 2600 version.

Check out the character sheet.

Halo General
""I don't know when the images of the FN F2000 appeared, but I didn't see them until three or four months after the game shipped, and I thought 'Oh great. Now everyone's going to think I swiped the design from Fabrique National.' It was surreal to see how close the Halo assault rifle was to its real-life counterpart... and it was all totally by accident.""
 * Abnormal Ammo: The Needler, Needle rifle, and related weapons shoot pink to purple crystals that detonate a few seconds after impact.
 * Adaptational Attractiveness: Captain Keyes looks much younger in Halo: Reach and Anniversary than he did in the original Combat Evolved.
 * Aerith and Bob: Not so much for any characters (the Covenant notwithstanding), but for UNSC ship names. The ones from the games are poetic and a little bit weird: Pillar of Autumn, Spirit of Fire, Aegis Fate, In Amber Clad, Forward Unto Dawn, and Say My Name. But ships from the novels tend to have (more) normal names like Leviathan, Fairweather, Gettysburg, Texas, and (eventually) Do You Feel Lucky?. The odd ship names are very likely a nod to Iain M. Banks' Culture universe and the shipnames of the Culture, a setting which also has giant ringworlds. This trope's prevalence in Halo really depends on the writer. For example, in Halo Evolutions had a story called "Midnight in the Heart of Midlothian" written by former Bungie staff Frankie O'Connor takes place in ship called "The Heart of Midlothian.
 * Aggressive Negotiations: A Grunt nervously pulls this and starts the entire war.
 * AI Is a Crapshoot
 * All There in the Manual: Think Halo is just some generic thoughtless A Space Marine Is You Doom-clone? Think again. There's tons of supplemental material for the multimedia universe, often including the actual manuals.
 * AKA-47: Sniper Rifle System 99D-S2 Anti-Matériel bears a heavy resemblance to the South African made NTW-20, manufactured by the Mechem division of the DENEL group, sharing many of the same features; chambering for the 14.5 x 114mm round, the stock, carrying handle/scope guard and the muzzle brake.
 * According to Robert McLees, the MA5B/C Assault rifle is NOT based off of the Belgian FN 2000, though he grudgingly admits that people would think that after comparing the two

- Robert McLees,Writer and Keeper of the Halo Story Bible

""Jumping into hell isn't the job, making sure its crowded when you get there is.""
 * Aliens in Cardiff: Thus far, the Covenant has not been mentioned as having invaded New York, Tokyo, L.A or any of the other usual cities. The Kenyan city of New Mombassa and Cleveland, on the other hand...
 * Why waste time invading a city with no Forerunner artifacts? Let it burn, let it burn, let it burn...
 * However, New Mombasa is treated as the future financial metropolis of the world, not as obscure as it is today.
 * Alternate Reality Game - I Love Bees
 * Also IRIS for Halo 3, Hell, simply visiting Bungie.net can also qualify, due to their love of Painting the Fourth Wall, or hiding clues to future projects in unassuming places.
 * Exclusively Evil: The Prophets, the Brutes, and the Flood.
 * And I Must Scream Jenkins and
 * Angry Black Man: "Who needs a Johnson beatdown?"
 * The Antichrist: The Covenant sees all Spartans, especially the Master Chief as this.
 * Arc Number (7)
 * And its powers, especially 7^3 (343), 7^4 (2401) and 7^6 (117649).
 * If you start counting at 0, like programmers do, the powers of 7 are 1,7,49,343,2401,etc. The 4th one is 343, the 5th is 2401.
 * 9 also is used heavily, though not as much as 7.
 * Artifact Title: ODST, and most of the Expanded Universe don't actually feature the Halos. A Halo Installation is present in Reach, but only in multi-player.
 * Except the Origins episode of Halo Legends, which explains the creation of the very first Halo, so of course it does have a Halo in it.
 * Buck mentioned in an ODST promotional trailer highlighting the characters that the Rookie is only a rookie to the team. He has had plenty of experience and you don't become an ODST without it.
 * Artificial Brilliance: The series is widely renowned for its very impressive enemy AI. However...
 * Artificial Stupidity: The allied AI was never nearly so advanced.
 * The Atoner: The Arbiter, though he grows out of it.
 * Ghost from Prototype
 * Authority Equals Asskicking: Elite Zealots and Ultras > all lower ranks. The method of climbing the ranks for Elites is by kills; literally, the more enemies you kill, the higher up you go in ranks, and nothing else matters.
 * Some of the upper-level UNSC members, specifically Captain Jacob Keyes and Admiral Preston Cole. Especially Admiral Cole. The Cole Protocol, the in-universe biography The Impossible Life and Possible Death of Preston J. Cole, he will rock your shit.
 * Badass: The Master Chief. Full stop.
 * Badass Baritone: The Arbiter
 * Badass Creed: The unit motto of the 105th Orbital Drop Shock Troopers is "Feet first into hell," hence their moniker "Helljumpers". Halo: Reach gives us an additional tidbit:
 * Badass Creed: The unit motto of the 105th Orbital Drop Shock Troopers is "Feet first into hell," hence their moniker "Helljumpers". Halo: Reach gives us an additional tidbit:

"Gravemind: Do I take life or give it? Who is victim, and who is foe? Gravemind: Resignation is my virtue; like water I ebb, and flow. Defeat is simply the addition of time to a sentence I never deserved... but you imposed."
 * Badass Crew: The Spartans.
 * The ODST Squad in ODST also count.
 * Noble Team In Reach.
 * Badass Normal: Sgt. Johnson.
 * Marvin Mobuto: What he does is so badass, the Master Chief himself says "I didn't know you, Sarge, but I sure as hell wish I had. You must have been one hard-core son of a bitch." In the book The Flood, halfway through the Library, Master Chief is almost overwhelmed by the huge numbers of Flood as he fights his way to the Index Room. Then, he finds the corpse of Sgt.Mobuto, a very normal Marine who was, in spite of his lack of Spartan training, energy shielding and so on used by the Master Chief, still managed to get within a few rooms of retrieving the Index.
 * Sgt. Forge According to the Halo Wars timeline, he also gets into a brawl with one of the Spirits Spartan-IIs and appears to have held his own.) Those Spartan-IIs are the same ones who are able to defeat multiple Helljumpers unarmored. At the tender age of 14.
 * Every single member of the ODST squad.
 * The squad with the Badass Nickname "Helljumpers."
 * Sadie Endesha from the same game probably also counts.
 * Miranda Keyes: Takes down two Brutes by herself and wounds several others with just a shotgun and a pistol.
 * Big Bad Ensemble: In the first trilogy, your top enemies are:
 * The Covenant, lead by the Prophet of Truth, is a religious, genocidal coalition of Scary Dogmatic Aliens bent on (unknowingly) causing intergalactic extermination by activating the Halo Array, as a means to "begin the Great Journey".
 * The Flood are a parasitic, mutated virus, represented by the Gravemind, that seek to literally feed on every organic species in the universe.
 * The Sentinels, spearheaded by their Monitors (i.e. 343 Guilty Spark), were created to contain the Flood, as well as anyone else that sought to prevent the firing of the Halo rings, and wished to steal the rings' activation indexes for their own purposes (the two go hand in hand).
 * Big Dumb Object: The titular Halo installations.
 * Black and Gray Morality
 * The UNSC is fundamentally benevolent, but somewhat heavy-handed with its colonies, and willing to resort to questionable methods for survival.
 * The Insurrectionists had legitimate grievances with the UNSC's aforementioned heavy-handedness, but extremist elements pushed them towards terrorism.
 * The Covenant's ruling caste is highly corrupt (and in some cases, possibly borderline insane), and the Brutes are aggressive and violent by nature, but the rest are either misguided by religious fervor, expendable slaves for all intents and purposes, just tagging along to fix stuff, otherwise coerced into serving the Covenant, or simply mercenaries with no real grudge against humans.
 * The Prophet of Truth, however is a definite Omnicidal Maniac.
 * The Forerunners genuinely wished to protect the galaxy and its inhabitants, but they grew complacent because of their extremely advanced technology, and when the Flood came knocking, they could only fulfill their duty as Guardians of the younger species of the galaxy by taking the Flood with themselves in a desperate last resort plan -- which could be interpreted as a Heroic Sacrifice or the cost of their foolishness, depending on how idealistic/cynical one is.
 * The Flood had killed and infected trillions of people, but their leading hive mind, Gravemind, sincerely believes that he simply bring peace and prosperity to a galaxy which simply doesn't understand the Flood due to ignorance and fear.
 * While that is never explicitly said, there are many allusions to it, particularly after it becomes clear to it that it has lost:

"Carter: I'm not gonna lie to you, Lieutenant. You're stepping into some shoes the rest of the squad would rather leave unfilled."
 * Hell, its personality is so alien in every sense of the word that anything could go.
 * The Bestiarium's "societal approximation" of life as a Flood form: "utopian socialism". Maybe they are happy.
 * Book Ends:
 * Broad Strokes: The games themselves are remaining internally consistent but the Expanded Universe has been set up for a great deal of rearrangement of facts and details.
 * The Brute: Take a wild guess...
 * Beneath the Mask Cortana, and every Ai that is secretly Rampant
 * Cain and Abel: Mendicant Bias and Offensive Bias.
 * Character Exaggeration: The Covenant's potential to "glass" entire planets is subject to a strong degree of exaggeration In-Universe. While they certainly have the capacity to reduce an entire planet's surface to glass using their energy weapons, it is a very lengthy process, and though impressive, is rarely worth the time it takes, leading the Covenant to focus on glassing major population centers and doing a few other token sweeps. With atmospheric convection, the destruction is equally deadly if less absolute. For their part, the Covenant boast of their ability to cleanse entire planets, while reports to the UNSC exaggerate the destructive potential to galvanize humanity into action. This is backed up by information from one of the datapads in Halo: Reach, saying that the Covenant do not have the resources to glass an entire planet and wage a multi-system war at the same time, and that to entirely glass Earth would require about thirty years of continuous bombardment by a fleet of equal size to that possessed by the UNSC.
 * The Chosen One: Master Chief has been set up within the games and in the expanded universe as being a particularly special spartan.
 * Cold Sniper: Romeo and Linda.
 * Seemingly subverted with Jun-266, who in the Reach teaser actually comes off as fairly friendly and chatty...then you read his profile which describes him as having "an unhealthy emotional detachment in regards to the consequences of his actions?. So it seems to be played straight.
 * Colon Cancer: Halo: Combat Evolved: Anniversary Edition.
 * Command Roster: A Bungie ViDoc for Reach spells it out fairly well.
 * Carter "Noble 1:" The Captain
 * Kat "Noble 2:" The Engineer/Playful Hacker/The Cracker
 * Jun "Noble 3:" Cold Sniper
 * Emil "Noble 4:" The Marine (Appears to be Hot-Blooded)
 * Jorge "Noble 5:" The Security Officer (The residential "tank" who also seems to carry the excess supplies)
 * "Noble 6:" Sixth Ranger, new to the team and player character
 * Cool Ship: The Pillar of Autumn, In Amber Clad, Forward Unto Dawn, Truth and Reconcilliation, Shadow of Intent, Spirit of Fire from Halo Wars, and a slew of others from the novels. They also make A Good Name for a Rock Band.
 * Humorously enough, there is an actual band called "Pillar of Autumn" that got their name from the ship.
 * Continuity Nod: Quite a few of them. Regret's carrier being able to jump inside Earth's atmosphere in Halo 2 is probably a nod towards the scene in First Strike in which Cortana discovers that this can be done by making the Ascendant Justice enter slipspace within a gas giant.
 * The Package has the Master Chief interact with  face to face and she acts exactly like Cortana, right down to telling him "Don't make a promise to a girl if you know you can't keep it."
 * To be honest, this scene from The Package is almost painful to watch. It's as if the writers tried to do their version of Tosh.0's "How many jokes can I do in 30 seconds?" using quotes from Cortana and the Chief from the main three games.
 * Justified in that Cortana is Halsey, save in AI format, considering the process that it takes to make a true AI.
 * Corpse Land: Before you encounter The Flood, you'll come across areas filled with ravaged covenant corpses.
 * Cosmic Deadline: It's All There in the Manual, but the UNSC-Covenant war drags on from 2525 to 2552, with the campaign over Harvest alone taking at least six years. The UNSC is constantly said to be on the road to defeat from Day One, losing colony after colony to the Covenant for a full 27 years, with the Spartans being in active service basically the entire time. Everything hits the fan at a breakneck pace right at the end though, as within the span of July to December 2552 (just six months):
 * July 2552: Keyes becomes a captain at the Battle of Sigma Octanus. The UNSC only now discovers that Hunters, Engineers, Elites and Prophets exist. (Brutes are encountered even later on.)
 * August-September 2552: Reach falls, the Autumn discovers the first Halo, and the events of First Strike take place.
 * October-November 2552: The Covenant invade Earth, enter a civil war, and fight to secure Installation 05.
 * December 2552: The Covenant loyalists try to take over the Ark. The Prophets get killed, the Gravemind and its forces get destroyed, and the war ends.
 * Crapsack Universe: "Welcome to the galaxy, mankind! Incidentally, our religion has decreed you to be a race of demons and we're going to genocide you now, no offense or anything. Oh, and don't mind the Cosmic Horror over there, it hardly ever Mind Rapes anyone."
 * Crystal Spires and Togas - The Forerunner basically fit in this trope. There are crystals, sleek and ornamented structures, and lots and lots of spires. Their society model also fits in with this.
 * Dark Messiah: Covenant Prophets in general, particularly the Prophet of Truth (a blackmailer and generally ne'er-do-good).
 * Data Crystal: For storing AIs.
 * Deadpan Snarker: Sarina, in spades!
 * Cortana too. Hell, even the Chief has his moments.
 * Romeo, so very much.
 * Defector From Decadence (The Arbiter and Elites)
 * Deflector Shields: Used extensively by The Covenant, and to a more limited extent by the UNSC after reverse-engineering The Covenant's shield technology.
 * Demonic Spider: While some of the stronger Covenant/Flood could qualify, the Hunter stands out the most. In the first game, they are easily defeated with a pistol shot to their backside, but in later Halo games, none of your weapons can 1-shot them anymore, and they also have a back attack now, so should you try to flank them, they can simply smack their shield backwards on you. While they're easier to beat in a co-op/multi-player game, if you find yourself fighting one by yourself, they're a lot harder to beat now.
 * Determinator - The Spartans, especially the Master Chief.
 * Did Not Do the Research - Sergeant Major Johnson's rank was abbreviated to "Sergeant" many times; even in the first game, his rank was not Sergeant, but Staff Sergeant. (Marine ranks are never abbreviated to the point of losing distinction.)
 * Doomed Hometown - The colony of Reach. Also, the homeworld of every single SPARTAN-II.
 * Doomsday Device, Depopulation Bomb - The Halos.
 * Drop Pod - Human Entry Vehicles, the entire purpose of the ODST "Helljumpers." Elites are often dropped in similar Covenant pods.
 * Earthshattering Kaboom - What happened to Alpha Halo. And the Ark. And Alpha Halo's replacement. And the titular planet in Ghosts of Onyx: after nuclear warheads were set off in its core, it was revealed to be made of trillions of Sentinels. Forerunner worlds have a thing for getting blown up directly, or indirectly, by Spartans.
 * Also from Ghost Of Onyx, the so-called "Nova Bomb." (also a Chekhov's Gun since it was mentioned in an earlier novel, but didn't become a factor until a later book.) The bomb was accidentally set off aboard a Covenant ship in orbit of a planet and it proceeded to instantly vaporize an entire separatist fleet of hundreds of ships (which had been preparing to totally crush the brutes), shatter a nearby moon to pieces, and burn off the entire atmosphere of the planet below it as well as scorching the entire near side into a hellscape. The weapon in question was perhaps the size of a mini van... and Halopedia's calculations put the thing's likely megaton yield at 1.2 billion.
 * In Halo Wars, the crew of the UNSC Spirit of Fire destroys a Forerunner Shield World by overloading the ship's fusion core and sending it into its sun. The result is a Death Star-like explosion.
 * In Halo Evolutions, Also a case of No Kill Like Overkill and a possible Heroic Sacrifice.
 * While the glassing of the most human colonies doesn't technically count, it does render those planets uninhabitable.
 * Earth That Used to Be Better
 * Eldritch Abomination (Gravemind and the Flood.)
 * Oddly-Named Sequel 2: Electric Boogaloo: It goes Halo [Combat Evolved], Halo 2, Halo 3 (and expansion), and then Halo: Reach.
 * Everyone Calls Him "Barkeep": Master Chief, a.k.a. Master Chief Petty Officer SPARTAN-117, a.k.a. "John", the Arbiter, the Rookie in ODST, and the Lieutenant in Reach.
 * Eviler Than Thou: The Gravemind vs. the Prophet of Truth.
 * Evil Overlord: Truth has shades of this, given that his underlings are religious zealots that believe they'll Ascend to a Higher Plane of Existence if they murder the entire universe.
 * Expanded Universe: Anime, Literature, Live-Action shorts and a Film in development, among other things.
 * Exposition Fairy: Cortana. Serina, in Halo Wars. And to a much lesser extent, just about all the male AI units out there.
 * Extremely Short Timespan: Halo: Reach begins on July 24th, 2552. In Halo3, the war officially ends on March 3rd, 2553. All five (extant) (first-person-shooter) games in the series take place during those nine months.
 * Face Full of Alien Wingwong: The Flood is more of a "all of your internal organs turned into Alien Wing Wong" example.
 * The Faceless: Master Chief again. Same goes for the Rookie, and possibly the Lieutenant.
 * In The Fall of Reach he's described  Somehow, knowing that only makes him look more badass in-game.
 * For those interested, we actually do now have an image of John 117 without his armor several decades before the Halo trilogy begins thanks to the graphic novels: http://www.halopedian.com/John-117.
 * Additionally, the Halo 3 trailer Starry Night shows Master Chief as a kid, although his face is darkened by the night.
 * His face is visible under just the right conditions in Halo 3.
 * That's actually the face of Marcus Lehto, the Creative Art Director at Bungie. The inclusion of his face in the Halo 3 beta was an Easter egg, he's known for many within the series.
 * The only image that Bungie has released thus far of an adult Master Chief without a helmet was their 2010 Christmas Card which shows the back of his head.
 * Fantastic Rank System: The Covenant have a completely different rank system, with different ranks existing for different races.
 * Fantasy Counterpart Culture: The Covenant are a theocratic, imperialistic hegemony with a sword wielding warrior class. They name there weapons and vehicles with a Type-(Number) system. They fight a naval battle against Eaglelandish marines. Imperial Japan anyone?
 * Fast Roping: The ODST's do this in Uprising.
 * Fixed Forward-Facing Weapon: UNSC ships have a forward facing MAC cannon that acts as a primary weapon.
 * Franchise Zombie
 * Gas Mask Mooks - Grunts, since they are methane breathers.
 * Gratuitous Iambic Pentameter: The Gravemind speaks in trochaic septameter.
 * Hero Antagonist: Sesa 'Refumee's Heretics are disillusioned Grunts and Elites that found out the truth about Halo and formed a resistance movement against the Covenant, but remained an independent organization in their own right, centrally opposing the Covenant and attempting to sway more defectors to their cause.
 * Arguably, the Insurrectionists can be seen as this as well, though their methods of combating the UNSC aren't as noble as their motives for wanting out of it.
 * Heroic Sacrifice - The books contain several good examples, as well.
 * tries to do this early in Halo 2, until
 * in Ghosts of Onyx,
 * Thom-293, best known for the Deliver Hope trailer, who saved Kat's life by delivering the tac-nuke to the Covenant ship. Noble Six, the protagonist of Halo Reach, replaces him.
 * in Ghosts of Onyx,
 * Thom-293, best known for the Deliver Hope trailer, who saved Kat's life by delivering the tac-nuke to the Covenant ship. Noble Six, the protagonist of Halo Reach, replaces him.
 * Thom-293, best known for the Deliver Hope trailer, who saved Kat's life by delivering the tac-nuke to the Covenant ship. Noble Six, the protagonist of Halo Reach, replaces him.
 * Thom-293, best known for the Deliver Hope trailer, who saved Kat's life by delivering the tac-nuke to the Covenant ship. Noble Six, the protagonist of Halo Reach, replaces him.

"Cortana: I tried to stay hidden, but there was no escape! He cornered me, wrapped me tight... and brought me close..."
 * Hit and Run Tactics: You'll need these for dealing with Halo 2's final boss, even on easy. Just take a look at what happens to your allies and decide if you want to repeat their performance.
 * In Halo in general it was best to use your rechargeable shields to pick off enemies one by one, retreating when under too much fire. This allows you to wittle down their numbers slowly rather than taking the whole squad on at once. Particularly important in the first Halo, where your health didn't recharge when your shields did.
 * Hive Mind: Gravemind. Its computing power rivaled the entire Forerunner empire's data capabilities. You also have the Proto-Gravemind that's present on the, as well as the Proto-Graveminds which serve as Flood bases in Halo Wars.
 * Primordium shows that  Thanks a lot, Didact!
 * Holding Back the Phlebotinum: Why the UNSC does not field their emerging shield technology more widely. According to Dr. Halsey's diary that accompanies the Special Edition of Halo: Reach, humans have a very good understanding of shield technology now, but it is limited by two major related factors: size and power. As the volume of area to be shielded grows, the power requirements to maintain the shield increase exponentially. Shielding an entire starship would require several times more power than that ship can generate. However, shielding an infantryman or small vehicle has more modest power requirements, albeit still much more than an infantryman or small vehicle would typically have a power plant capable of producing. Humanity can make small enough power generators in the form of micro-fusion cells, but they are rarely cost-effective to produce, making each one almost the cost of a small starship. However, the SPARTAN-IIs already incorporate such a device into their Powered Armor by necessity, making adding shields to their existing systems relatively trivial. As for The Covenant technology they reverse-engineered their shields from? Humanity still has no idea how those things are powered, and from all appearances lack an obvious power source altogether.
 * Hot Scientist -- Given that Cortana is based on her, Dr. Halsey probably qualifies.
 * If the anime is to be believed, she does.
 * Halo: Reach shows her as the Grandma, What Massive Hotness You Have! variation on this.
 * Let we forget Professor Ellen Anders from Halo Wars...
 * Huge Guy, Tiny Girl -- Chief and Cortana. Or Keyes. Or pretty much any other human character.
 * Human Popsicle: The Cryo sleep tubes used by the UNSC during space travel
 * Humans Are Special - Hinted at strongly throughout the games, but ultimately confirmed in Cryptum.
 * Although, judging from Bornstellar and, to a lesser extent, ,
 * Humans Are Warriors - Many species of the Covenant believe it, especially the Sangheili, and the Gravemind believe that Humans are a greater threat to the Flood than the Covenant, who he only see as arrogant good-for-nothing fodder.
 * This Trope is explored in the Halo Legends episode Origins, remarking both the achievements that led humanity to be a growing civilization, and the unfathomable slaughter that war had caused upon them. After reviewing the story of both the Forerunners and Humanity, Cortana wonders whenever if warriors will ever be gone from the world... and, bitterly, she comes to the conclusion that they will never disappear, and that there would always be war.
 * Humongous Mecha - The Scarab.
 * Insectoid Aliens: The Drones.
 * It's Raining Men: The ODSTs, aka the Orbital Drop Shock Troopers, aka the Helljumpers.
 * And in Halo 3, MC falls two kilometers, lands on his back, and is pretty much only stunned. Apparently, he survived it, because he surfed through the sky on a door from the Forerunners ship.
 * Noble Six performs a similar act in Reach and survives a fall from orbit. However, a cutscene in the level preceding this occurrence shows that s/he is wearing a Reentry Pack and in the following level s/he is favoring his/her arm and starts on low health, making this a justified instance of the trope.
 * Jack of All Stats: Master Chief is this, as noted on the character page. In The Fall of Reach, Dr. Halsey notes that other SPARTANS are faster or stronger but Master Chief is the bravest and out of all of them (possibly in fact due to his wider and varied skill set and leadership skills) the best. According to Cortana, she chose him because he had something "the others didn't; luck. Was I wrong?"
 * Jerkass: Romeo, and O'Brian from The Package. He seems to regret it later though.
 * Killer Space Monkey - Brutes, which the Spartans described as rabid gorillas.
 * In universe, Brutes are given the derisive nickname "Baby Kongs" by UNSC forces, often just expressed as "Bravo Kilos".
 * Kinetic Weapons Are Just Better: 500 years into the future, we have AI, FTL ships, and Powered Armor, however, most of the UNSC's weapons and vehicles are just shinier versions of ours. Spartan Laser, MAC, and Gauss Cannon are exceptions of course.
 * Not a bad thing though, UNSC weapons tend to be more effective against the Flood than the Covenant's. Pure Forms on the other hand...
 * And energy weapons are more effective at draining energy shields.
 * Large and In Charge - The Gravemind, being a collection of thousands of corpses, is insanely big.
 * Large Ham - Truth and Gravemind are constantly contesting for the title. Sgt. Johnson and Rtas 'Vadum also do quite good jobs.
 * In fact, most (if not all) NPC Elites fit this as well. How, considering their bizarre mouths, are they able to so epically chew the scenery at times?
 * I HAD HIM! "COMMANDER, YOU FOOL! A THOUSAND HELLS AWAIT YOU!!!"
 * Elites aren't the surprising ones. SPARTAN-1337 manages to chew the scenery with a helmet on.
 * Legacy Character: The Arbiter.
 * Living Legend: They call him Master Chief. And Halo 2 adds the Arbiter.
 * Magnetic Weapons: You've got the (novels only) M99 Stanchion, a coilgun sniper rifle that fires a .21-caliber round at 15 km/sec, capable of reducing anyone the round hits to Ludicrous Gibs from over 4 kilometers out. You've got the M68 Gauss Cannon, mounted as turrets and on some Warthogs, firing a 25 by 130 mm slug at around 13.5 km/sec, useful for punching through tanks(or one-shotting infantry). You've got the Magnetic Accelerator Cannon (MAC), the main weapon on UNSC ships, which fires a 600-ton shell at 120,000 km/sec, impacting with 1.17 teratons per shot. It takes 3-5 shots to down a Covenant cruiser's shields (likely more for the bigger carriers). And you've got the Super MAC, found only as part of space stations in geosynchronous orbit over important planets. These suckers fire a 3000-ton slug at 150,000 km/sec; with an impact force of 9.98 teratons per shot, they're strong enough to punch clean through any Covenant vessel, shields and all, blow a big-ass hole through the ship, and keep going with enough force left over to punch through (or at least deal extreme damage to) another ship.
 * Ms. Fanservice: Cortana. Probably also the reason that they dialed down  apparent age from 60 to 20 AT MOST in The Package.
 * Notably averted in the first game though, where she's remarkably "unsexy", almost butch at least compared to her later incarnations.
 * Mission Control Is Off Its Meds: 343 Guilty Spark, in his first appearances and only getting worse.
 * Motherly Scientist: Dr. Catherine Halsey was much of a mother figure towards the Spartan children while at the same time administering the augmentations that killed or permanently disabled most of them. Worthy of note, however, is that her motherly treatment of them when not subjecting them to painful augmentations is believed to be a major contributor to the emotional stability of the SPARTAN-IIs compared to the SPARTAN-IIIs.
 * No Campaign for the Wicked: Played straight for the most part in the story campaigns. For example, in Halo 2, you get to play a Covenant soldier, but you only get to fight heretical Covenant forces, or the Flood. You never get a mission where you have to kill humans, and killing any human allies (aside from fighting with player characters playing Master Chief) causes them to attack you if you do it too much. Otherwise the games are told from the human's POV.
 * No One Could Survive That - How did Johnson make it off of Halo 04? And in the third game, the Chief swan-dives off of Truth's Forerunner dreadnought from orbit, but is mostly unscathed.
 * The small crater where he landed includes a still glowing forerunner door. Which he apparently used as a heat shield. Or surfing board.
 * In First Strike it is revealed that Johnson  Concept art shows that the Chief
 * Oh Crap: The reaction of anyone, human or alien, after getting stuck with a plasma grenade.
 * Ominous Floating Spaceship
 * Ominous Latin Chanting: The main theme. It's wordless chanting though.
 * Omnicidal Maniac: The Covenant, particularly the Prophets.
 * One-Man Army: Master Chief.
 * To a lesser extent, the refit Pillar of Autumn, Capt. Jacob Keyes, commanding. Of course, we only see it in the books, but, still...
 * Oral Fixation Fixation: A pair, and actually quite prominent in the case of Sweet Williams Cigars. The brand is a favorite in the Halo Universe.
 * Captain Keyes and his pipe, especially in the books. Given UNSC No-Smoking regulations inside ships, Keyes chews the tip to calm himself.
 * Sergeant Major Avery Johnson, and his Sweet Williams Cigar. Chief Petty Officer Mendez in the books probably counts, too.
 * Our Zombies Are Different: The Flood.
 * Powered Armor The SPARTANs's Mjolnir armor, Elites and Brutes (to a degree). Rank and file Marines use powered exoskeletons to move heavy stuff, and the regular armor has enough muscle-enhancing technology to allow ease of movement even with heavy gear. ODST armor takes it to the next level, allowing them to use most of the weapons Spartans can carry. The suits worn by the Spartan 3s were semi-powered armor, with a watered down version of active camouflage as well.
 * The Elites armor provides some physical enhancement, but the Brutes don't. Then again, neither race need much enhancement.
 * Precursor Killers - The Flood, which ironically didn't actually kill the Forerunner, but forced the Forerunner to commit suicide. And according to Cryptum,
 * Precursors - Double time! You've got the Forerunners, then it turns out that they had a forerunner race called, you guessed it, the Precursors.
 * Privateer - Unlike the other Covenant races, the Kig-Yar (Jackals) are not officially a part of it. Instead, they're paid mercenaries who have to, at least, pretend to believe in the holiness of the Forerunners. They operate their own ships and are allowed to raid non-Covenant ships and colonies.
 * Proud Warrior Race Guy (The Elites and the Brutes, especially the former, less so for the latter)
 * Deconstructed in the Halo Evolutions tale The Return. Years after the end of the Human-Covenant war, and after the Elites are victorious from the Covenant Civil War, the entire race (including the protagonist, a Shipmaster) faces a spiritual crisis. Without the Prophets to lead them, without the knowledge of forerunner technology, without knowing what would their gods want, and without a worthy enemy to fight, the Elites don't know what to do now that everything they believed in was a lie.
 * In this tale, the Brutes are also victims of the Deconstruction. The Brutes, after the deaths of their leaders, happily tinkered away with the equipment they were forbidden from using... but they were too savage, to the point the Brutes fought more among themselves than against the Elites.
 * Puny Earthlings (Played straight with the Elites, Brutes, Hunters, and most Flood forms. Averted when it comes to the Grunts, Jackals, and Drones.)
 * Rape as Drama: Strongly implied with the interactions between Cortana and Gravemind.
 * On the level "Cortana", a message plays on the crashed pelican which draws about as close a parallel as possible, given that the victim isn't even corporeal
 * Rape as Drama: Strongly implied with the interactions between Cortana and Gravemind.
 * On the level "Cortana", a message plays on the crashed pelican which draws about as close a parallel as possible, given that the victim isn't even corporeal
 * On the level "Cortana", a message plays on the crashed pelican which draws about as close a parallel as possible, given that the victim isn't even corporeal


 * Retcon Lots of them. The books, video games and other media frequently contradict each other on the dates of the timeline, the history of the Covenant and the level of technology that humanity has. Official policy is that games trump books, and new material trumps old material.
 * Some stories which takes place before the original Halo has neglected the fact that The Fall of Reach states that Spartan-II's did not have energy shields until just before the Battle of Reach, though in the case of Halo Wars, Ensemble has admitted that this was merely a gameplay decision and that, canonically, Red Team never actually had energy shields.
 * The Package shows the UNSC ONI Prowlers having stealth field technology that puts the Elites' Active Camoflauge to shame, but in the novels they're just immune to sensors and painted black to hide in space. It also shows the Spartans dogfighting in space with ships that have energy shields, which should have been impossible due to when it takes place, see above.
 * The Fall of Reach originally claimed that humanity had never encountered the Elites until they attacked Reach...but they're encountered by the SPARTAN-IIIs of Beta Company during Operation: TORPEDO in Ghosts of Onyx, by the crew of the "Spirit of Fire" in Halo Wars, and by several SPARTAN-IIs and marines in Halo Legends and The Cole Protocol, all of which took place long before the Battle of Reach. Finally, the 2010 re-release of The Fall of Reach eliminated any mention of the Elites being a newly encountered species, and the new "Adjunct" section made references to one of the engagements against them that was shown in Legends.
 * Additionally, the events of First Strike was supposed to be the first time UNSC forces had ever engaged the Brutes, and then Contact Harvest, Halo Legends, and Halo: Reach all showed that they had been fighting each other since the beginning of the war. Once again, the 2010 re-release eliminated any reference to them being a newly encountered species.
 * Also, The Flood had Master Chief cutting and breaking the spinal cords of Hunters (supported by the fact that 1 pistol shot to the back would kill them), but Halo 2 would establish that they're actually giant colonies of worm-eel aliens with no central nervous system.
 * Although they do have spine-like bracers running up their backs in Reach.
 * Apparently Dr. Halsey had limited knowledge of the Spartan-IIIs during Reach.(Which scrambles a significant portion of Ghosts of Onyx.)
 * Her journal (see below if you dare) has her finding out about the program only after she bumps into Noble Team and realizes they aren't all Spartan-II's.
 * Remember the Alamo!: Remember Harvest. Remember Reach.
 * Retraux - the Atari 2600 port.
 * Rule of Symbolism - Halos, the Covenant, the Ark, John 117, the Flood, etc. It helps that these are their names translated into the closest English equivalent.
 * Scary Dogmatic Aliens - The Covenant are religious extremists.
 * Sealed Evil in a Can - The Flood.
 * Sergeant Rock - Forge and Johnson.
 * Don't forget Sergeant Stacker. He's that white Sergeant who fought through the Battle of Reach, Halo: Combat Evolved, Halo 2, and Halo 3. In Halo: CE, he gets rescued by Master Chief in the second level, attacks the Silent Cartographer alongside MC, helps MC destroy the power cores, then manages to somehow escape. He then fights in the Battle of Mombasa, leads the Marines to attack the Prophet of Regret, and gets captured alongside Johnson and Sergeant Banks. Their response is to break free and capture a Scarab, before returning to Earth. After all that, he then enters Voi and leads Marines to destroy an entire Covenant anti-air battalion. Finally, he gets deployed onto the Ark alongside the rest of the Marines and MC. When his unit is killed, his response is to organize an impromptu armored division, destroy a Covenant division and a Scarab, assault the Citadel, then escape off the Ark safely to return to Earth.
 * Shout-Out - The Master Chief is John, Spartan #117 and is awakened from cryostasis at the start of the first game. The protagonist of Demolition Man is John Spartan, who was prisoner #117 of the cryogenic prison facility where he was kept for 40 years.
 * Although unlikely, it is possible the fact that the number 343 (which could have been any of the other first powers of 7, including the next one up, 2401) is an obscure shout out to Buffy the Vampire Slayer, as in the episode Killed By Death,  This is most likely a coincidence, though.
 * There are also several shout-outs to Marathon, the series' spiritual predecessor, and the Greek historical angle is carried over as well.
 * A lot of inspiration was taken from the Alien franchise, the Pelican drop ship is nearly identical to a ship with a similar purpose in Aliens.
 * Speaking of Aliens, look at Halo's Sarge. Then look at Apone from Aliens. Heck, look at the entire USCM from that movie and compare it to the soldiers from Halo.
 * Even better, in the first game you could find a bulletin board on the Pillar of Autumn. One of the signs on it is a lost pet sign for a cat named Jonesy.
 * A small one: in Halo Wars, the hero unit Spartan 42's real name is Douglass.
 * Another in Halo Wars: sometimes, when selecting or moving UNSC flamethrower Hellbringers, they will sing "Burninating the countryside!"
 * Many of the achievements in Halo: Reach recall moments in previous Halo games.
 * Many of the Daily and Weekly Challenges are quotes from well-known sci-fi names, such as "An Elegant Weapon/Not So Clumsy or Random" of Star Wars fame.
 * Sighted Guns Are Low Tech
 * Justified in that thanks to the neural interface put in both the Marines and the Covenant, sights aren't really needed anymore.
 * Sigil Spam: Not so prevalent in most of the games, but in Halo: Reach the UNSC and the Covenant put their logo on basically everything.
 * Semper Fi: UNSC marines.
 * Slave Mooks: The Grunts and Flood Combat/Carrier forms work as this.
 * Space Fighter: The Seraphs and Longswords. Rarely seen on camera but in the novelizations they are threats to be reckoned with.
 * Space Marine (Both straight with Master Chief, and averted with the real space marines.)
 * Hold it! John's actually in the Navy. Rank of Master Chief Petty Officer. While not technically a Space Marine, he qualifies in other ways.
 * Starfish Aliens - Engineers, Hunters(colonies of wormlike organisms in humanoid armor), Drones(insectoids with a Hive Mind), Flood Infection Forms, the Gravemind, and Flood Pure Forms.
 * The Starscream - Some hints in Halo 2, as well as most of the Expanded Universe stories since then have implied that Regret was this with regards to Truth.
 * This is confirmed in The Cole Protocol, when Regret realizes he'll be offed by the Prophet of Truth as soon as he finds no use for him, so he tries to get his own agenda fulfilled before Truth does.
 * Standard Sci-Fi Army: Naturally. Infantry dominate (from Light to Elite, and of course the Super Soldiers), although both sides use field aircraft and at least one Armored vehicle. Halo Wars expands on this, giving the UNSC Heavy and Elite infantry (the Hellbringers and Helljumpers respectively), APC's, and Anti-aircraft units. Several of the Covenant vehicles are effectively Technicals, being re-purposed mining equipment.
 * Standard Sci Fi Setting
 * Suicide Mission: Occurs throughout the series, such as the Arbiter's first mission in Halo 2.
 * Super Prototype (Inverted with the Arbiter armor, which has a cloaking system inferior to the modern Elite armor, ditto with the novel Ghosts of Onyx- the SPARTAN III's had the inferior Semi-Powered Infiltration armor, which lacked the shielding and strength-enhancements of the MJOLNIR suits in favor of some camouflage ability. Played straight with the Master Chief's armor in the first and second games, however - it is markedly superior to the 'standard' MJOLNIR suit due to improvements in shielding and the AI support system that Cortana represents.)
 * Survival Mantra: "Keyes, Jacob. Captain. Service number 01928-19912-JK."
 * Theme Naming: Not the characters, however. Until Halo Wars broke the pattern, all UNSC vehicles in the games smaller than a full-size spaceship were named after animals, while Covenant vehicles were named after spooks. Most of the small craft are still named/nicknamed after animals, while space fighters tend to be named after swords.
 * And even then Halo Wars only broke the pattern with the Shout-Out Cyclops and appropriately named Gremlin.
 * Covenant spacecraft names are generally religious allusions, such as the Truth and Reconciliation or the Long Night of Solace. UNSC ships are named based on importance to the plot - unimportant ships, if given a name at all, have perfunctory one-word names such as the Iroquois or the Savannah, while more important ones have poetic names like Pillar of Autumn or Forward Unto Dawn.
 * Tyke Bomb (Master Chief and the other Spartans began training when they were six.)
 * Quite literally after they got their augmentations
 * Tragic Monster - Captain Keyes, mutated into a Flood "proto-Gravemind" form. MC puts Keyes out of his misery when he retrieves the neural implants.
 * True Companions: Quite a few examples. Spartans (both Type-II and Type-III) are trained together from childhood and quickly become like family. Sangheili/Elites refer to each other as "brother" and are hardly ever seen without another of their kind nearby. And the squad in ODST becomes pretty tight-knit as the game's events progress.
 * Universe Bible: Bungie literally calls it the Halo Story Bible.
 * Updated Rerelease / Video Game Remake: Halo: Combat Evolved Anniversary is a bit of both. The single-player mode actually runs on the original Halo: Combat Evolved engine, but with updated graphics using resources taken from Halo: Reach. The multi-player mode, on the other hand, has been rebuilt from the ground up using the Halo: Reach engine.
 * Virtual Ghost: Cortana, who is based on the mind of Dr. Catherine Halsey.
 * The Virus: The Flood
 * We Do the Impossible: Master Chief
 * Spartans in general really, it's even said to be the "short definition of a Spartan."
 * The Worm That Walks: Mgalekgolo/Hunters are a collection of worm/eel things called Lekgolo, combined to form a single entity with a single consciousness (single as in using "I, me, my" instead of "We, us, our").
 * You Are Number Six: True to a certain extent with all Spartans, who are given numeric designations. Typically they will retain their personal name, suffixing the numeric designation to this.
 * This trope is also literally true in Halo: Reach where the otherwise unnamed primary player character joins Noble Team as their new "number six."
 * Zombie Apocalypse (The Flood)
 * Especially when you find out
 * This trope is also literally true in Halo: Reach where the otherwise unnamed primary player character joins Noble Team as their new "number six."
 * Zombie Apocalypse (The Flood)
 * Especially when you find out

Halo Books
""This child could be more useful to the UNSC than a fleet of destroyers, a thousand Junior Grade Lieutenants ? Or even me. In the end, that child may be the only thing that makes any difference.""
 * Apocalyptic Log: The Covenant is founded on one of these, except they thought it was holy writ.
 * Badass Boast: Nylund is particularly fond of these. Happens in First Strike (by VADM Whitcomb), Ghosts of Onyx (by Whitcomb again, through a recording) and The Impossible Life and the Possible Death of Preston J. Cole (by the title character), in all cases before the character who delivers the said boast destroys a large Covenant fleet.
 * Brain Uploading Human AIs are created this way. Dr. Halsey was smart enough to clone herself so she could create Cortana while keeping her own brain safely inside her skull where she needed it.
 * Actually, she
 * Colonel Badass: Colonel Ackerson somewhat as withstood interrogations by Brutes and still managed to protect Earth before being decapitated. It seems that Colonel Deen was he managed to break a Covenant Siege behind enemy lines.
 * Convection, Schmonvection: Brutally averted in the case of Covenant strategic glassing. Carefully placed Covenant warships in orbit rain beams of plasma down onto a planet's surface in a choreographed grid pattern. What does not die instantly from getting hit with the plasma will die somewhat less quickly from the convection as the atmosphere boils around them...
 * Creative Sterility: The Covenant, though technologically superior, are only so because they depend on weapons and ships salvaged from the ruins of the ancient Forerunner race, which they slavishly copy with religious reverence. Humans are the only species capable of innovation, and often incorporate and improve upon captured Covenant tech. The Master Chief's energy shields are based on the similar Elite model, for instance.
 * Though it's not so much that the Covenant are incapable of innovation as much as that they generally see even simply changing the settings on Forerunner technology as heretical. The Elites and the Prophets, for example, were already about as technologically advanced as 26th century humanity before they began messing around with Forerunner tech.
 * In Halo Cryptum, the Prophets are noted to be a scientifically-gifted species whose technology equals that of their.
 * Darker and Edgier: The novels (particularly The Fall of Reach) are much darker than the games, almost to the point of being a deconstruction. They don't shy away from just how horrible fighting a war against an unstoppable alien juggernaught would be or how awful your life would be if you were a SPARTAN-II . They also portray the amount of damage that the human body can take much more realistically, with soldiers dying from a single plasma rifle shot, etc.
 * Especially the Halo Evolutions short-stories. Dear God, don't read "The Mona Lisa" or "Stomping On the Heels of a Fuss" if you have a weak stomach.
 * To elaborate, "Stomping" details, while "The Mona Lisa" is
 * Does Not Know His Own Strength: The Spartans have trouble adjusting to their new strength right after the augmentation, to the point where John-117 thinks that the Artificial Gravity in the ship's gym is broken since he can lift the heaviest weights without effort.
 * Dying Like Animals - The inhabitants of the Rubble and the Insurrectionists in The Cole Protocol. Also Major Silva in The Flood.
 * Faster-Than-Light Travel - Slipstream space, which is more-or-less shortcutting through another dimension. One of the reasons for Covenant space superiority was their greater ability to emerge from Slipspace at pinpoint locations, whereas UNSC exit points might be inaccurate by as many as 100,000 kilometers.
 * Not only was the location more accurate, so was the timeframe. Travel time between stars didn't remain constant, and UNSC ships that departed at roughly the same time could arrive at their destination hours or even days apart, reason of which was not clear to the scientists but attributed to "eddies" in slipstream currents.
 * The Federation - The UNSC, obviously.
 * Five-Man Band: In the novels, John's team normally goes like this:
 * The Hero - John
 * The Lancer - Fred
 * The Smart Guy - Linda
 * The Big Guy - James/Joshua/Sam/Will
 * The Chick - Kelly
 * Foregone Conclusion: The title of the first book is Halo: The Fall of Reach. Guess what happens.
 * Foreshadowing: Most famously, by Dr. Catherine Halsey in The Fall of Reach, when describing John-117:

""Listen to me, Covenant. I am Vice Admiral Preston J. Cole commanding the human flagship, Everest. You claim to be the holy and glorious inheritors of the universe? I spit on your so-called holiness. You dare judge us unfit? After I have personally sent more than three hundred of your vainglorious ships to hell? After kicking your collective butts off Harvest - not once - but twice? From where I sit, we are the worthy inheritors. You think otherwise, you can come and try to prove me wrong.""
 * Generation Xerox - Well, if you consider having your brain cloned and then used to create an AI as having an offspring, Dr. Halsey and Cortana definitely qualify.
 * Genius Bruiser - Spartans, Elites, and to a lesser extent Brutes. Hunters, too.
 * Good Job Breaking It Hero: During the fall of Reach, Admiral Whitcomb re-purposes one of the UNSC's new experimental NOVA Bombs and leaves it booby trapped so that if the Covenant took it back to one of their planets, it'd induce massive casualties. By the time the bomb detonates however, the Covenant is fractured under civil war and ending up annihilating a major reorganizing fleet of the faction that ended up siding with Humanity.
 * Though it is possible that if the fleet remained, they wouldn't have been desperate enough to side with the humans at all.
 * Hand Wave: Though there is a decent-enough explanation for why Sgt. Johnson was able to resist getting nommed by the Flood, it's never really explained how he, Lt. Haverson, Cpl. Locklear, and PO2 Polaski were able to commandeer a Pelican despite being separated from other UNSC forces on Halo.
 * Heroic BSOD: Admiral Cole sure gets one when he fins out that
 * Honor Before Reason - The Sangheili honor codes are well beyond the point of ridiculousness. Especially apparent in Halo: The Cole Protocol.
 * The various Human characters end up taking advantage of this.
 * Hope Spot / Diabolus Ex Machina: In Ghosts of Onyx, Admiral Patterson is down to one carrier and three destroyers, facing two damaged Covenant destroyers. One is taken out, leaving a single Covenant ship utterly defenseless.
 * I Did What I Had to Do: Haverson kills an Engineer who just repaired John's armor in order to keep the Covenant from getting any data on it. He finds the act just as despicable as Cortana does, but stands by his decision.
 * Jerkass: Antonio Silva hates the Spartans, especially the Master Chief due to John accidentally killing an ODST member a long time ago. Silva seems to have forgotten how this was a result of half a dozen of the best soldiers attacking a supposedly average fourteen year old.
 * Somewhat justified that Silva would hold a grudge against the Spartans, as

"Cortana: "Also, be advised, Chief, that there are ceremonial guards in this temple - a race we have not encountered before. Roughly translated from Covenant dialects, they are called 'Brutes.' They shouldn't be a significant threat or they would have been used in previous military situations.""
 * Lightning Bruiser: Kelly in the novels was always the fastest Spartan, even when they were children. Once she goes through augmentations, she's described as being so fast that nothing could touch her if she didn't allow them too. She can reach speeds up to 62 KPH (roughly 38 miles an hour).
 * Which is nonetheless fairly sluggish in comparison with John's recorded maximum speed of 105 KPH. Granted, he tore an Achilles tendon getting there, but still...
 * I believe the implication was that she could reliably run at 62 KPH, as in, that was the highest pace she could keep for a significant amount of time without major side effects. Presumably she could have ran a lot faster if she pushed herself like John did.
 * Of course, all the Spartans are Lightning Bruisers compared to normal humans.
 * Jorge-052, Noble Teams Heavy weapons specialist carries a massive Heavy Machine gun which would require an entire crew of regular humans to man and would probably be cumbersome in the hands of even the other Spartans. Jorge however doesn't seem to be slowed down by it in the slightest.
 * Macross Missile Massacre: UNSC ships of the line also carry ludicrous numbers of Archer missle pods that can produce this effect. Unfortunately they are not particularly effective against Covenant energy shielding.
 * MacGuffin - The Forerunner Crystal in First Strike.
 * Made of Plasticine:
 * A vehicular example is seen courtesy of the many starships in the series, especially the UNSC's vessels when confronted with the Covenant's plasma weapons. It is basically unheard of for a ship to come out of an engagement without being gutted within an inch of its life and/or requiring several months' stay in drydock to fix the myriad of meltdowns and decompressions. Apparently, all that armour and structure is like so much tissue paper.
 * Averted for the Pillar of Autumn; even in-universe it was described as basically being a Lethal Joke Lightning Bruiser Cool Ship. It and its entire class were reputed as being Made of Iron, even if they sucked in the offensive department.
 * The Covenant ships subvert this trope: while their shields are up, they are basically Made of Iron, and only MAC cannon rounds generally make a dent. Knock down the shields, though, and they can get blown apart with otherwise-useless Archer missiles.
 * A more straight example comes from the descriptions of the effects of Covenant weaponry and Flood attacks on human UNSC Marines.
 * And also averted for the Spartans -- they repeatedly come back from injuries that would cripple or kill an ordinary human. Linda, in particular, came back to full fighting readiness after being clinically dead.
 * Meaningful Name / Ironic Nickname: The Prophet of Truch is a habitual liar, The Prophet of Regret is impetuious and doesn't seem to regret his actions. The Prophet of Mercy is completely merciless. According to Contact Harvest, Regret used to be the Vice Minister of Tranquility and was known for his confrontational attitude, and got his later position after blackmailing the Prophet of Restraint over his illegitimate children. This sort of thing seems to have been a Running Gag throughout the Halo EU.
 * The name "John-117" also may have meaning; from biblical references (various passages in the Book of John or in Revelations with the numbers "1" and "7" could be read as relating to Halo's plot) to a Shout-Out to Demolition Man.
 * It's also often pronounced one-seventeen, 1:17 is 77 seconds and 7 is Bungie's Arc Number.
 * The Metric System Is Here to Stay
 * Necessary Drawback: The Spartan I training program was a mixture of Training From Hell and chemical enhancements but didn't result in a significant battlefield improvement. The Spartan II's had Training From Hell, chemical enhancements, cybernetic augmentation, and a custom-built Powered Armor but because of the high risk of deformities and death from the implants (low "graduation" numbers) it was deemed to not be cost efficient. Spartan III's (the subjects of Halo: Reach) were a balance between the previous programs to get higher numbers of Super Soldiers that could affect the tide of battle.
 * Novelization: The first game has one, titled Halo: The Flood.
 * Psychic Static: A way of fighting back the Flood if you ever get infested and Mind Raped.
 * Reasonable Authority Figure: Haverson, despite outranking the Master Chief, willingly concedes command of the mission to the Spartan. Later when the mission changes and he retakes command, Haverson is still agrees to take them back to Reach even though he knows that Master Chief really only wants to go to check for surviving Spartans.
 * Remember When You Blew Up a Sun?: Or in the case of Admiral Cole,
 * As a real-life Out-of-Universe inversion of the trope, there is a painting inside an ONI base in Australia called Admiral Cole's Last Stand, described in Halo: First Strike. The book was published nearly five years prior to Halo Evolutions, but in-universe, it was ten years before the end of the war.
 * Right Hand Versus Left Hand: The political machinations within the Covenant in Halo 2. The Expanded Universe shows that the UNSC is not wholly united either.
 * Taken to a whole new extreme with the infighting at the Office of Naval Intelligence. There the right hand doesn't even know the left even exists. Even more blatant when you consider the context behind this communication. To put it short, Ackerson kidnaps one of Halsey's Spartans(Kurt) to help start his own Mass Produced Spartan unit to compete with Halsey's. Kurt then covertly spirits a number of those Spartans from the S-III companies in order to form his own secret team of Elite Spartan III's outfitted with Mjolnir armor like the original Spartan II's. And everybody is in the dark about getting conned by somebody else.
 * The Rival: Spartans and ODST generally don't get along.
 * Rock Beats Laser (Used and/or subverted depending on certain circumstances. Human firearms can outperform Covenant energy weapons in some cases, such as against the Flood. That said, in space combat the Covenant tend to have a massive advantage over the UNSC.)
 * Screw the Rules, I Make Them: The Office of Naval Intelligence has a very complicated relationship with both civilian and military law. While the violation of civilian law would be understandable, they also frequently violate military like the Cole Protocol, and have orders that in the event of a Winter Contingency (Covenant attack on a planet) they are to ignore all mission detrimental orders from anyone below secure-grade Captain.
 * Shotgun Wedding - Admiral Cole, twice. Subverted both times--- it looks at first like he's being forced to marry Inna Valkov, his first wife and an admiral's daughter but it turns out that he wasn't the father of her son. His second wife, Lyrra, is also pregnant when they get married
 * Space Is an Ocean: Averted, as the ships use the 3-dimensional, zero-gravity nature of space to their advantage, such as by flipping the Pillar of Autum 180 degrees in order to point the majority of their point-defense guns at the Covenant ships attacking their underside.
 * The Spartan Way (The training regimen of the SPARTANs as seen in the novels)
 * Space Romans - The Elite culture is basically Imperial Japan IN SPACE.
 * Super-Persistent Predator - Why humans call the Mgalekgolo "Hunters".
 * Super Soldier (The Spartans. You've been kidnapped by the army, kid, will never see your family again, and have been replaced by a clone that will die soon. You will have to go through grueling training and risky augmentation, then get stuffed into a suit of armour that makes people wonder if you're actually a robot, and have difficulty bonding with anyone not a SPARTAN II. Oh, and no one will ever know your real name, if you die you're listed as "MIA" or "WIA", and you no longer have any sex drive whatsoever. Who wants to volunteer?)
 * (Further deconstructed in Ghosts of Onyx. )
 * Super Toughness: The Spartan II's. Notably not the Spartan III's, who were elite cannon fodder.
 * Tempting Fate: Guess who kicks the crap out of Master Chief & Co. after the following statement:
 * Tempting Fate: Guess who kicks the crap out of Master Chief & Co. after the following statement:


 * "Three Laws"-Compliant: Mentioned by name. The default setting of the AI constructs. Disabled for normal military use, since the laws would force the AI's to prevent soldiers from sacrificing or even risking their lives in war.
 * Time-Delayed Death: In Ghosts of Onyx, Dante, after a particularly hectic firefight, offhandedly mentions "I think they got me." Upon closer inspection, it turns out that nearly half of his torso had been blown off, and he didn't even notice.
 * Tsundere: Sif in Contact Harvest is a textbook version.
 * Tyke Bomb: The Spartans were drafted/kidnapped when they were six years old, and due to their training were better fighters than most adults. Then they got augmented.
 * Theme Naming: This series and Marathon are part of one. Durandal, Cortana..
 * The War of Earthly Aggression: In the expanded universe, pre-contact with the Covenant, and continuing through the war, there was a huge ongoing rebellion movement in the Outer Colonies.
 * We Will All Be Atheists in the Future: Subverted. Dr. Halsey is specifically stated to be an atheist, suggesting this distinguishes her in some way from other human characters. This is later confirmed in ODST with the character of Dutch, who is noted to be a deeply spiritual man and a student of religion and philosophy.
 * Wham! Episode: Cryptum, SO MUCH. You were wondering how humans and Forerunners first met 100,000 years ago? How about...
 * Wham! Line: Again, the Forerunner Saga is full of these. Often mentioned offhandedly, as, at the time, they are commonly known facts that seem to have no relevance. A big one is.
 * You Gotta Have Blue Hair: One of the female Spartans is mentioned to have dyed her hair blue in The Fall of Reach, though by the end of the book it's gone back to its natural color.
 * Cortana and Serina both have blue hair (and blue everything else).
 * You Keep Using That Word: The Cole Protocol calls MACs railguns. They're actually coilguns.

Halo Games by Bungie
"Female Marine: Not a tango in sight.
 * Almighty Janitor: Subverted and played straight with the Rookie. After learning he fought his way through war-torn Mombasa by himself for several hours, Dare thinks he's one of these. The truth is he was knocked out in his pod for most of it. However, it's perfectly possible to confirm her suspiciouns through gameplay. Heck, if you get all the audiologs, a cutscene changes so Rookie knows more about what's going on than Dare does! And Dare's the intelligence officer!
 * Ancient Keeper: 343 Guilty Spark.
 * Ascended Meme: In ODST, the location that played the Siege Of Madrigal also had a short, looping animation of Marty O'Donnel dancing and little winged hearts flying everywhere. The heart effect is available as a purchasable "dying armor effect" (like Grunt Birthday Party confetti) in Reach.
 * A Space Marine Is You (Seriously. Look at the checklist.)
 * Attack! Attack! Retreat! Retreat!: Occationally, caused by the Marines' combat dialogue acting up.

Male Marine, less than a second later: I see tangos... lots of tangos!"

"Private Chips Dubbo: S'alright, I'd hide from me too!"
 * Attempted Rape: attempts to rape  in the Audio Files' story.
 * Not just killed. He gets ripped to shreds.
 * Axe Crazy: Kinsler, the New Mombasa police commissioner featured in Sadie's Story, is a rephrehensible jackass, who is willing to sacrifice the safety of the citizens in his bid for payback as the city falls apart.
 * According to his profile, Noble Team member Emile-239 seem to fit this rather well, apparently so brutal that his superiors are reluctant to field him against anything but aliens, for fear of his brutality giving the media real "excess" to comment on.
 * In at least one section of the game, we're told "He says he wants to win the war, but he really just wants the enemy to die."
 * Badass: The Master Chief. Also, the entire race of Elites, basically bipedal, evolved Land Sharks with energy shields.
 * An oft-overlooked example is the Australian Marine Private Chips Dubbo featured in all the Bungie Halo games, who gets some of the most badass lines in the entire series.

"Johnson:: Dear Humanity, we Regret being alien bastards! We Regret coming to Earth! And we most definitely Regret that the Corps just blew up our raggedy-ass fleet! Pilots: Oorah!"
 * And, of course, scar-faced, shotgun-wielding Sergeant Pete Stacker, who along with Dubbo is one of the only human characters to have survived all three games.
 * Badass Back: Aka Cheating Bastard Back, the Jackal snipers. In games 2 and 3 the Hunters can melee you behind their back too, which is instant death on Legendary.
 * Badass Boast: After being told that a message from the covenant keeps repeating, over and over, the word "Regret":

"Half-Jaw: Come out, so we may kill you!
 * The Heretic Leader in the same game speaks to the Arbiter and accompanying strike team through a hologram. It's short, but it implies a lot.

Heretic: Heheheh... Get in line."

"Marine (in the middle of an enormous gun battle): The Covvies are shooting at us!"
 * Bash Brothers: Hunters always come in pairs of two. In most games, they're identical and equipped identically.
 * The Battlestar: Any ship that figures into the main plot, such as the Pillar of Autumn, the In Amber Clad, or the Forward Unto Dawn. In Halo 3, the Separatist vessel Shadow of Intent takes the place of the Rebel Basestar.
 * Beating a Dead Player: The infamous teabag in multiplayer. Additionally, campaign NPCs and enemies will occasionally shoot enemy corpses (including yours) and shout at them.
 * Beehive Barrier: The Bubble Shield. Back again in Reach with a healing ability.
 * Berserk Button. Don't try to destroy the Halo ring in front of 343 Guilty Spark. Just ask.
 * Big Damn Heroes: Happens quite a lot during cutscenes, and sometimes you can do it yourself.
 * In Halo 3, when Johnson is beaten up to make him activate the rings, you have a good view of the large window behind Truth, with a small dropship growing larger in the distance.
 * Bittersweet Ending:
 * BFG: Spartan Laser, detachable turrets, fuel rod gun, etc.
 * Bolivian Army Ending: FireFight in ODST can only end in this.
 * Book Ends:
 * Border Patrol: Invisible instant-death barriers prevent shortcutting or wandering out of bounds; some multiplayer maps, such as "Snowbound", have plausible border control devices.
 * According to Bungie, the number of these (at least in campaign) are going to be reduced allowing the maps to be more explorable.
 * Boss in Mook Clothing: Brute Chieftains, Gold Elites(first game), Silver Elites(second game), and Hunters(second and third games).
 * Enforcers in Halo 2.
 * Butt Monkey: The Grunts. They get a lot of abuse, and are so funny at receiving it, too.
 * Captain Obvious: Sometimes, randomized combat dialogue can lead to this.
 * Captain Obvious: Sometimes, randomized combat dialogue can lead to this.

"Grunt: Hey, demon! The jerk store called and they're all out of YOU!"
 * Charged Attack: The Plasma Pistol
 * Arguable, but the Needler also counts. It would be virtually useless, despite the homing feature of the needles, except for the fact that once a target has enough needles in them, they simultaneously explode. So the needler can be useful, assuming a player can get enough needles in an opponent to cause the explosion.
 * Also, the Spartan Laser.
 * Reach adds the Plasma Launcher, which charges to fire more grenades, as well as an artillery target painter.
 * Chekhov's Gun
 * "I'm a thief... but I keep what I steal."
 * The Halos themselves. If a Galaxy destroying superweapon is found in the first game it will be fired by the end of the third game.
 * Cliff Hanger: The first game ended with plenty of more story to tell, but still self-contained. Halo 2 has merely a pause in the story.
 * Color Coded for Your Convenience: Following in the tradition of Bungie's Marathon and Oni, enemies in Halo are color coded to denote rank; orange or blue for rookies, red for veterans, black for spec ops, and silver or gold for the super-tough Boss in Mooks Clothing types.
 * This is somewhat subverted by the Brutes in Halo 3... of the dozen or so Brute variants, 6 are all armored in almost the exact same shade of blue (with only a very minor variance in shade to denote different ranks). That blue-armored Brute with the horned helmet could be either a low-level Brute Captain Minor, an extra-hard Brute Captain Ultra, or a Brute Bodyguard, and you have absolutely no way of knowing exactly which unless you've got an HD TV, are really good at telling the difference between very close off-shades of blue, and for some reason he's standing still long enough for you to examine his armor.
 * Reach subverts it again. The old ranks are the same, but the new highest ranks...cycle back to red.
 * The Computer Is a Cheating Bastard: On Legendary difficulty, most notably in the second game. Rapid-fire plasma pistols, faster-shooting plasma rifles, insta-death melees, Badass Back sniper shots, attacks that allies and enemies can survive but are instantly fatal to the player(Two words: Beam Rifle), unfair vehicle damage allocation, X-ray vision, sniper-accurate grenade throws, stupid friendly AI, etc.
 * Copy and Paste Environments:
 * In the original game, the last level is the first level backwards. The second-to-last level is the second level with different textures. The third level is one half going in, one half going out. The levels after the library are the same as the ones before the library. Except, well, backwards.
 * Also, these are noticeable:
 * ( The Library Every interior level in the original game.)
 * The multiplayer map Death Island from the original game is essentially a remake of the level The Silent Cartographer. All they did was replace the override with 1 base and the map room with another...
 * The Level Floodgate in Halo 3 is pretty much the previous level, backwards. Except everything's apocalyptic, and the Covenant is replaced with the Flood.
 * There's also a slight subversion of this trope in the very end of Halo 3. The control room to fire the Halo is almost identical to the one in the first game, hinting that all Halos are merely copies of each other.
 * Although, since this Halo is an exact replica of the one from the first game, it's not that much of a stretch.
 * Oh yeah, the collapsing structure that you are driving through? It's the framework for that same island from Silent Cartographer.
 * Reach does this in the opposite way you'd expect: the multiplayer maps were designed first, and then tweaked to appear in the campaign.
 * Also in Reach, the campaign level "The Package"'s first half takes place in the same area as the previous level "ONI Sword Base", except it's set at night, all apocalyptic, partially-flooded, you have a Scorpion to make the outside areas go by faster, and the elevator is out indoors so you have to use maintainence tunnels.
 * Cosmetic Award: The multiplayer armor permutations in Halo 3. Reach takes it a step further by forcing you to purchase them with in-game "cR".The prices are...Extortionate.
 * It's worth noting you can get cR by doing just about anything.
 * Cosmetically Different Sides: Elites and Spartans (though quite possible on the same team) are the same aside from visually in the multiplayer. Reach is supposed to be avert the trope, making the Elites take more damage and have an ability to roll, while the Spartans have the ability to sprint and are smaller targets.
 * Although the different body shapes between humans and Sangheili mean that scoring headshots on each is different, and there are some other profile-related differences.
 * Crew of One (Mostly)
 * Averted only with the Warthog, sadly.
 * The Mongoose as well.
 * Crunchtastic ("Killtacular", etc. from Kill Streaks)
 * Cutscene Incompetence: This affects the titular members of ODST, mostly because the game's Rashomon-style narrative leaves them in the interesting position of being both Player Characters and Non Player Characters, depending on whose Flash Back you're watching. If you, The Player, establish a habit of Crazy Awesome while playing as any given squad member, that squad member will not continue in similar style when the AI takes over again.
 * Decoy Protagonist: The Rookie. If anything, Halo 3: ODST is the story of Buck, Dare, and
 * Halo: Reach implies that
 * Deflector Shields (Used by Elites, some Brutes, and Tartarus, whose shield can only be taken out with a Beam Rifle.)
 * In Halo: Reach, there is an armor ability that lets you, temporarily, have unbreakable shields. As soon as the shields run out, however...
 * The Dragon (Tartarus)
 * The entire Brute species in general in Halo 2, 3 and ODST.
 * Degraded Boss: The Brute Chieftains fought as semi-standard enemies throughout Halo 3 are essentially weaker versions of Halo 2's final boss.
 * Does This Remind You of Anything?: Noble Six is a killing machine that tends to go about it by herself/himself without any particular previous coordination. Sound familiar?
 * Drop the Hammer: The gravity hammer. A big, scary Brute melee weapon that'll knock your enemies into the next county.
 * Your allies, too!
 * Doomed by Canon: Reach. Energy projectors turn the surface of Reach to glass. The survival rate of you and your teammates in Halo: Reach is understandably slim.
 * Doomed Hometown - The colony of Reach.
 * Do Not Drop Your Weapon - Played straight with most enemies, making it all the more frustrating when you forgot that it was averted with the flood combat forms.
 * Doppelganger Attack - The Heretic leader's holo-drones.
 * Dual-Wielding - Added in Halo 2, kept in Halo 3, removed in ODST.
 * And are still out as of Halo Reach.
 * Dying Like Animals - A random wounded marine in the Uplift Reserve level of ODST goes on a long-winded rant about how Earth is a cage, humans are zebras, and the Covenant are the lions.
 * Easter Egg: Lots of them. One favorite is the Insulting Grunt.
 * And are still out as of Halo Reach.
 * Dying Like Animals - A random wounded marine in the Uplift Reserve level of ODST goes on a long-winded rant about how Earth is a cage, humans are zebras, and the Covenant are the lions.
 * Easter Egg: Lots of them. One favorite is the Insulting Grunt.

""We need ammo!" "Well why don't you go ask your Brute buddies then?!""
 * Then there's the Red vs. Blue "What's the Password" scene in Halo 3.

"Cortana Got an escape plan? Master Chief "Thought I'd try shooting my way out—mix things up a little.""
 * Elevator Action Sequence - Seen on The Oracle, Regret, Quarantine Zone, etc.
 * Elite Mooks - Zealot(gold) Elites, Spec-ops(black/purple) Elites, Ultra(silver) Elites, Honor Guard Elites, Spec-ops Grunts, Ultra Grunts, Brute Captains, Brute Chieftains, etc.
 * Enemy Civil War - The Covenant Civil War in Halo 2: Elites, Hunters and Grunts versus Brutes, Jackals and Drones. Beforehand, there was the Heretic uprising, with Spec-Ops Grunts, Elites and the Arbiter eradicating the defectee Grunts and Elites.
 * Enemy Mine - This quickly becomes a theme. The Elites join with the humans during the Covenant Civil War. Guilty Spark assists Master Chief after the destruction of his station. Even Gravemind lends a tentacle in his debut  Of course, some of these alliances are more lasting then others...
 * Escort Mission - The final parts of ODST have you, The escortee is relatively tough, though, so it's not as bad as some.
 * The Escortee also offers the player some very useful buffs when they're in close proximity.
 * Played much straighter in the "Shut Up and Get Behind Me... Sir" segment of the Truth and Reconciliation level in the first game, where the player has to escort Captain Jacob Keyes off a Covenant Cruiser.
 * Some commentary revealed that there was a bug in earlier releases of the game where Keyes would shoot corpses just like any other marine in the game. Keyes has a Needler, though.
 * Eternal September: Pre-Halo, Bungie had a small but very dedicated fan community, primarily drawn from previous Bungie titles like Marathon and Myth, with whom they kept a very close relationship, hosting fan events, or attending events organized by fans. They even would release a few teasers into the fan community before any formal announcements had been made (such as with "The Cortana Letters".) When Halo came onto the scene, the fan community experienced an explosion in population size, often completely bypassing the original "old school" community entirely and forming vast new communities which quickly overshadowed them in size and visability. The older Bungie community is still alive and active, but is now a small piece of a much larger whole.
 * Every Episode Ending: Of sorts- Halo, Halo 2, Halo 3, ODST and Reach all have a driving sequence in their respective final level, some more prominent than others.
 * Everybody's Dead, Dave:.
 * Everybody Lives
 * Fake Static: "Dad, * chhhhkkk*, you're breaking up, I * chhhhkkk* can't hear you." "...Sadie, it's a video feed. I can see you making those noises."
 * Fan Service (Cortana. She's not naked, but welllll...)
 * Gets lampshaded occasionally by the Marines dialogue. Especially when the  skull is active.
 * She actually has a little bit of Gainaxing/JigglePhysics in some of the Halo 3 cutscenes.
 * In every game in which she's featured, she is bare-bottomed, and the camera angles almost always manage to make that very visible in every cutscene she is featured in.
 * Fishing for Mooks: Known as the Trap-door Spider Method, luring off single opponents and killing them out of the way of their fellows is often the only way to win in some circumstances when you are low on ammo.
 * Fission Mailed - Cortana's transmissions in Halo 3.
 * Five-Man Band:
 * From Halo: ODST:
 * The Hero - Buck
 * The Lancer - Romeo
 * The Big Guy - Dutch
 * The Smart Guy - Mickey
 * The Chick - Dare
 * The Sixth Ranger - The Rookie
 * Guest Star Party Member -, Sgt. Johnson in multiplayer as a more literal usage of the phrase.
 * The SPARTANs of Halo: Reach are shaping up to be this, based on the most recent trailer.
 * The Hero - Carter
 * The Lancer - Emile
 * The Big Guy - Jorge
 * The Smart Guy - Jun
 * The Chick - Kat
 * Sixth Ranger - Noble Six. Reading the site changes things
 * Kat's The Lancer (best friends with Carter), and The Smart Guy (hacker)
 * Jorge also the Team Dad (SPARTAN-II
 * Emile is the Token Evil Teammate (Axe Crazy) Noble Six may also be considered this, it is suggested he's Ackersons "private grim reaper". A character known for being a Colonel Badass Knight Templar.
 * Five-Token Band: Reach's Noble Team is a relatively mild form: Jun is apparently of Indian or Middle Eastern descent, Kat appears to be of Latin-American ancestry, and Emile at least sounds like he's black.
 * Kat is Russian or Eastern European... And Jorge is Hungarian.
 * Flunky Boss - Regret and Tartarus. Tartarus isn't so bad as the Brute reinforcements only show up at two or three pre-scripted points in the fight, and every time they do you usually get a fresh squad of Elite reinforcements to help you. Regret, on the other hand, can reach That One Boss status due to the endless waves of respawning Honor Guard Elites and Grunts coupled with the lack of good cover and necessity to charge right out into the open to melee damage the boss.
 * On the other hand, co-op mode usually makes the battle against Regret into a Curb Stomp Battle that lasts all of very quick. One guy on door duty and the other on face-punching. If you both have a heavy weapon (and you should, as they come by the dozens in the area), it usually breezes past, except on Legendary.
 * Friendly Enemy: A few humorous non-canon Easter Eggs in the first game show Johnson is this to the Covenant. "This is it, baby. Hold me."
 * Gameplay Ally Immortality: Averted in the 1st game, by simply ignoring it if a plot-critical character (ie. Sgt. Johnson) should happen to buy the farm. Played straight in all other members of the trilogy, as well as in ODST and "Reach".
 * In the first game, if you look closely, Johnson is in every level with human NPCs. Combine that with the cutscene in the Library, he IS immortal. He just never gets up when you see him "die". Only when you get the next checkpoint does his dead body disappear.
 * Generican Empire - The United Nations Space Command and the Covenant.
 * Getting Crap Past the Radar - The marines often make exclamations in military code: "Mike Foxtrot!" "Whiskey Tango Foxtrot!" Do you sense a pattern here?
 * Other more important NPC's can get away with saying "mother..." There's clearly some sort of ban on profanity in the universe; the only time anyone even says "shit" is if you shoot David Cross's Marine character in the second game.
 * Glass Cannon - The Halo Reach version of the Scorpion. It's cannon will make mulch out of any vehicle with one hit and it's large damage radius means that you have to miss by a fair margin to not kill someone you're shooting at. Downside? An enemy with just his grenade can kill it in an instant while boarding. With the addition of Armor abilities like Sprint, Evade, Jetpacks, the Plasma pistols charged EMP make getting boarded a very common occurrence.
 * Reachs Revenant is another example.It's powerful but leaves its operators exposed.
 * Gravity Barrier - Notoriously overused in the second game, where falling only a few meters in the wrong place is fatal.
 * Hell, on the last level of Halo 2, if you go to the bottom (during the final fight) and even CROUCH, you'll die.
 * Guns Akimbo - Introduced in Halo 2.
 * Harder Than Hard: Legendary difficulty. Halo 3 describes it as "Tremble as hordes of invincible alien monsters punish the slightest mistake with instant death... again and again." At least they're honest. One optional skull bonus basically boosts the difficulty by one more level, and turning on every skull, for all sorts of added difficulty, is nicknamed Mythic Difficulty.
 * The legendary Recon multiplayer armor requires you to 4-man the final level of Halo 3 ODST, among other things. On Legendary. With Iron activated. Without using the scorpion tank or any of the warthogs, believe me you will wish you could use them, while protecting the elephant to the Last Exit. However to make it "easier" you do get to use a infinite ammo rocket launcher. (For the record, Iron is a skull that punishes a single death with utter failure. Good luck.)
 * The Vidmaster Challenge achievement "Annual" from Halo 3 also counts, as it has simiar conditions as ODST, but on the level Halo. The main difference is instead of using the warthog, or mongoose, you have to use ghosts.
 * Heroic Mime - The Rookie, which is repeatedly lampshaded. Subverted in Halo 1 through 3 as neither the Arbiter or Master Chief speak when playing as them in First Person, but do say a few words in third person cutscenes. The other troopers in the ODST squad completely avert this trope, often speaking out both in and out of cutscenes while you're inside their head.
 * Hyperspace Arsenal: Famously averted -- Master Chief can only carry two guns at a time. Fridge Logic says he should be able to carry a maximum of five or so, but pay no attention to that.
 * He can carry five guns, but not use them effectively. But he should still be able to carry two one-handed guns and one two-handed gun.
 * Iconic Logo: People wear T-shirts of a 2 or 3 inside the distinctive O in the title and it's obvious what game they play.
 * Import Gaming - The first Halo game suffers from a very strange PAL Xbox conversion. Most badly-optimised PAL conversions are universally 16.666% slower and less smooth than their NTSC counterparts. But the situation with PAL Halo isn't that simple:
 * Framerates: PAL Xboxs feature dashboard settings for both PAL 60Hz (allowing games to run as smoothly as their NTSC counterparts - usually 60fps or 30fps) and PAL 50Hz (for use with older TVs - so games run at 50fps or 25fps). But with Halo, setting the Xbox dashboard to 60Hz doesn't improve the framerate smoothness, just adds an annoying periodic stuttering effect where the game doubles-up frames (most noticable in the smooth camera flyby in levels' opening cutscenes). So Halo is one of the few Xbox games for which PAL 50Hz is preferable to PAL 60Hz (and of course NTSC 60Hz is preferable to both).
 * Gameplay speed:
 * The Maw countdown timer runs at the correct speed, whether in PAL 50 or PAL 60 modes.
 * By performing some informal tests (running straight between two specific rocks, throwing grenades directly upwards, and seeing how long it takes to fire a full assault rifle loadout into thin air) it seems that in PAL Halo, you run at the same speed as the PC/NTSC Xbox version, but grenades thrown are noticably slower to land and explode, and bullets are spat out at a slower rate.
 * In this post on Halo.Bungie.org, part of a discussion on why PAL and NTSC Xboxes couldn't be linked up into the same LAN game, one of the game's developers ("Matt") describes the use of "tags" to affect various properties of the gameplay speed. However, there's no comment on why they didn't optimise the game for PAL60Hz rather than PAL50Hz (as most other Xbox games did, and as flagship PAL Dreamcast titles had been doing as far back as 1999). Fortunately, there's a promise that from Halo 2 onwards Bungie would do their PAL conversions properly - and they did!
 * Ineffectual Sympathetic Villain: The poor hapless cannon fodder Grunts often get this response, to the point where they became your Ineffectual Sympathetic Sidekicks about halfway through Halo 2. Somewhat less so in Halo 3, what with their annoying new kamikaze run of death ability.
 * Ink Suit Actor: In ODST, "Buck" looks exactly like Nathan Fillion, and Dare bears a strong resemblance to Tricia Helfer.
 * Innocent Innuendo "Please enjoy my BRIGHT... BLUE... BALLS!"(Grunt suicide bomber)
 * Insert Grenade Here: In Halo 3's campaign and multiplayer, a player can latch onto the hull of a Scorpion or Wraith tank if they manage to get close enough; they then can smash through the armor and plant a grenade on the inside, destroying the tank.
 * Feature first appeared in Halo 2.
 * Invincible Minor Minion: A squad of these show up to kill you if you break the plot and kill your CO in the beginning of the first game.
 * The Ishmael: The Rookie in ODST
 * It's Up to You: well, you are the Player Character after all.
 * Jet Pack: Make their debut in Halo: Reach.
 * Joke Item: Several civilian vehicles can be driven in Reach, such as a forklift, which of course has no weapons and doesn't move fast enough to run over enemies. It can be placed in multiplayer maps, perhaps for incredibly slow-paced races, or driven on a Firefight map if you feel like fooling around and have a death wish.
 * The forge exclusive golf club,tin cup also.
 * Justified Tutorial - Halo 1 had you going through a mandatory check-up after getting out from cryo. Halo 2 had a check up to see if your new suit worked. Halo 3 had a "how many fingers do I have" simple field check. Service keeps getting more spartan with the games. In ODST, the Rookie has to look around his pod in order to break out of it. Reach has Noble Six surveying the ground below before landing in the first mission.
 * Kick the Dog - Miranda Keyes' death at the hands of Truth, and potentially Johnson's death as well.
 * Kill It with Fire - Flamethrower in the third game. It's range is short and it slows you down quit a bit, however, in close quarters it can ruin anyone's day. Also, the Flood Pure Forms pretty much die as soon as they're lit up.
 * On higher difficulties they still have enough time to run up and hit you a couple times before they die. Which is made worse since they're on fire now. So yes, in close quarters the Flamethrower can ruin anyone's day. Often, though, your day is also ruined. For more controlled flames, the incendiary grenades were usually a better choice. Unless your aim was terrible.
 * King Mook - Sesa Refumee(the heretic leader), and Tartarus to some degree.
 * Lampshade Hanging: When rescuing Cortana from High Charity near the end of Halo 3:

"Truth: I! AM! TRUTH! THE VOICE OF THE COVENANT! Arbiter: And so... you must be silenced."
 * Late to the Party - The ODST squad arrives at New Mombasa just as it's devastated by a jumping cruiser. While most of the squad jumps straight into the action that follows, the Rookie (who we play as the most) wakes up six hours later and spends most of his time trying to find the rest of the squad.
 * Master Chief arrives on Earth in Halo 3 after the Covenant has already ravaged the planet.
 * Last of His Kind - Master Chief is the last of the Spartans after the fall of Reach. It turns out there are others, but that's never mentioned outside of supplementary materials.
 * Lead the Target
 * Leitmotif - Although the composers said they weren't doing a "Peter and The Wolf" approach, some characters and locations do have musical themes associated with them, such as the Delta Halo theme, the High Charity theme, the first part of "Enough Dead Heroes"(sort of Cortana's theme), the middle third of said piece(often heard when fighting Hunters), "Shadows"(the Flood's theme in the series), "The Last Spartan"(the MC's theme in the second and third games), the Arbiter's characteristic theme(aka "Falling Up"), and "Farthest Outpost"(the Ark theme). Many of these are also recurring riffs, ie they play in scenes unassociated with the character or location.
 * Level Five Onix - Hunters in Halo 1 were just sad once you figured out their weak point and how to exploit it (one pistol shot to the orange bits and it's game over). Their cannon shots were powerful but easily dodged, and their melee attacks were so predictable that even the NPC Redshirts could dodge them with reasonable consistency. They majorly Took a Level In Badass in the sequels, though.
 * In the sequels, they become a Boss in Mook Clothing. They can no longer be one-hit killed except with the sniper rifle, their armor completely deflects projectiles instead of simply reducing their damage (so you can only hurt them by shooting their weak point), their weak points are much harder to target(nearly impossible to get behind them now), and both their cannon and melee attacks can One-Hit Kill you.
 * Reach makes them even more difficult
 * Losing the Team Spirit: Killing the elites or brutes that are leading a group of grunts will temporarily throw them into panicked disarray. It can happen from time to time with low-ranking jackals as well in the first game, but they're usually disciplined enough to stand and fight.
 * Lower Deck Episode - Halo 3: ODST, dealing with some relatively normal, if Badass, soldiers fighting off Covenant.
 * Lowered Monster Difficulty: The Brutes get weaker in every game (see Made of Iron below as well). In Halo 2 they had no shields, yet could shrug off tons of damage and attempting to melee them was pretty much suicide. In Halo 3 they have shields, yet once those are gone they are pretty weak (outside of Elite Mook versions) and they can be beat around in melee combat. In Reach they rarely have shields yet aren't much tougher than unshielded Halo 3 Brutes (and can be beat around just as easily), and even the Elite Mook versions go down in a few headshots (bar the few that do have shields). This also coincides with them having less influence on the plot; they start off very important but by Reach they are just another type of Mook.
 * Made of Iron: In Halo 2, Brutes were walking tanks who could soak several dozen hits from bullets or plasma fire before dropping. Headshots from high-powered semi-auto rifles were essential to beating them. Bungie received massive fan feedback that this was "lame", so in Halo 3 Brutes have energy shields and play much more like Elites, dropping after a reasonable amount of fire from most weapons (although the Brute Chieftains are still massively tough, and can take almost 2 full clips of assault rifle fire to drop even after you break through their shielding).
 * Misplaced Wildlife: Red-tailed hawk calls, etc.
 * Misplaced Vegetation: Temperate plants, eg ivy and rhododendrons, in the African jungles.
 * The Mothership: High Charity
 * More Dakka ("Hold RB to detach turret.")
 * Musical Pastiche: Some examples:
 * Main theme => The Maw/Remembrance, The Last Spartan, the Arbiter's theme, the Delta Halo theme, etc.
 * Arbiter's theme => High Charity => Intro of Finish the Fight
 * The Last Spartan, superimposed on the main theme => Finish The Fight and Keep What You Steal
 * Unforgotten and Heavy Price Paid => Rue and Woe/Heroes Also Fall
 * On A Pale Horse => Leonidas/Leonidas Returns
 * Beat of Heretic, Hero, and Delta Halo Theme melody=>Penance(heard during Delta Halo intro cutscene)
 * Under Cover of Night => In Amber Clad => Farthest Outpost
 * The Gun Pointed at the Head of the Universe => Impend, and the firet half of Heretic, Hero.
 * Blow Me Away => Broken Gates/Out of Shadow (one version has the same intro as BMA)
 * The Musketeer: Both Master Chief and the Arbiter can use an energy sword or a hammer as one of their two weapons.
 * Neck Snap: One of the standard assassination animations for Halo: Reach Multiplayer, when one falls on a player that is on the ground. Justified since Spartans have enough strength to pretty much turn any human skull into paste.
 * The Neidermeyer: Buck is a subversion. At first he seems like your typical hard-ass, ball-busting, douchebag sergeant type. Turns out he's anything but, and just as likable as all the other ODSTs. He was just pissy over a few...girlfriend issues.
 * Nerf: Most infamously to the pistol, which went from a powerful mini-sniper rifle in Halo: CE to a dual-wieldable shield-eater in Halo 2... then it went to standard weak-ass FPS pistol land in the updated version of Halo 2. Additionally, the later games noticeably weaken the Plasma Rifle as well as making it much less accurate (at least when the player's the one using it) to compensate for the fact you could now wield two at once (making it more of a Plasma submachine gun). The plasma pistol is likewise much weaker than it's Halo: CE counterpart when not using overcharge shots.
 * Although in Reach, the pistol is quite effective now. Having a high rate of fire, a zoom and is able to effectively take down shields. It just requires some fire control...
 * Elites in Halo 2 are significantly weaker without their shields than they were in Halo 1. In fact, an unshielded Elite in Halo 2 can survive less damage than even a mid-level Grunt.
 * In Halo 3, the Brutes lose their Made of Iron status, instead being dependent on energy shields and playing much more like Elites (although unshielded Brutes still have higher-than-average health and can take 15-30 assault rifle bullets (depending on class) to kill).
 * Almost all weapons suffered this effect over the series.
 * Of the Halo 1 weapons, the plasma rifle lost it's stun effect, the needler lost range and homing ability in Halo 2, the shotgun became much closer range, and the frag grenade became less powerful.
 * In Halo 3, the rocket lost the homing ability from Halo 2; the rockets fired became slower; the assault rifle holds less rounds; the plasma pistol constantly loses charge in it's overcharged state; and the grenade inventory fell from four of each type to two of each type, and since the fourth grenade is not standard on any multiplayer map and rare in the campaign, this effectively drops your grenade total from eight to six.
 * The assault rifle, on the other hand, became better overall otherwise.
 * Never Trust a Trailer: In the Halo 1 trailer, we see Master Chief holding an Energy Sword, Marines driving a Warthog, a different Warthog mounted turret, Elite with an energy shield... Which most aren't available until Halo 2. Thanks, Bungie.
 * Nicknaming the Enemy: Most alien names fit this trope: Grunts, Jackals, Brutes, Elites, Hunters, Buggers, Grubs, and Prophets are all nicknames given by humans to refer to the separate races that compose the coalition of aliens they're at war with. Even their vehicles (Ghosts, Wraiths, Banshees) are nicknamed.
 * No Campaign for the Wicked: Even when playing as the Covenant Elite in Halo 2, you never fight against Human forces, instead spending those levels battling Covenant rebels and The Flood.
 * No OSHA Compliance: High Charity and the Halos are full of bottomless pits and narrow catwalks.
 * Not Distracted by the Sexy: Cortana
 * Nothing Is Scarier: The first half of the level "343 Guilty Spark" consists of a small battle against the Covenant, running away from the facility you're going into - running toward the One-Man Army they call "The Demon". Then, the rest of the level plays out with next to no battles and almost complete silence. Just about the only other living thing you meet is a Marine who's so paranoid about something that all he does is huddle in a corner, shoot at anything that moves, and scream random things. The facility is obviously in disrepair, as well as blood all over the place, but it's not clear what caused it. Upon finding the remains of the squad you were looking for, you're treated to a video log of them being attacked by... something. Something starts banging on all the doors in the room, and your motion tracker goes berserk.
 * Not So Harmless - Believe it or not but  is technically the most powerful boss of the games. When John-117, The Arbiter and Sgt. Johnson planed to activate the unfinish Halo Ring near the ending of Halo 3, knowning it'll be destroyed in progress,   felt that he had enough of their crap and refused to let them destroy "his" ring so he got all red and mean and attacks them with a huge ass laser weapon. It took , disappearing of the Arbiter, the wasting of John's power armor and four shots of the Spartan Laser, each shot powerful enough to bust a Wrath tank's sorry ass into atoms, to destroy him.
 * Ends up being completely justified when you remember was created by the Forerunners.
 * Not the Fall That Kills You: The first game has falling damage. In the latter two games, which lack falling damage, you still die instantly after falling a certain height (determined by a "fall timer") or through one of the anti-shortcut invsible death barriers. This contradicts the cutscenes in Halo 2 and 3 where MC falls from orbit, or at least the stratosphere.
 * Oddly-Named Sequel 2: Electric Boogaloo: Halo 3: ODST technically takes place concurrent with Halo 2, but was built on Halo 3's engine.
 * Once For Yes, Twice For No: The Superintendent Municipal AI in Halo 3: ODST.
 * Orchestral Bombing: Even if you didn't have you own music playing, aerial sequences in 3 tended to be this.
 * Pillar of Light: When the Forerunner artifact underneath the former New Mombasa activates, it produces a huge pillar of light that rises and ends in a blinding flash. Also, this happens basically every time when a Forerunner artifact is activated. In Halo's control room, in the Apex site in Halo Wars, etc.
 * "This is the way the world ends."
 * Pre-Mortem One-Liner

""You know me. When I make a promise..." "...You... keep it. I do know how to pick 'em.""
 * Prepare to Die: The ODST's line "Prepare to Drop" was changed to this when the Slipspace explosion happened.
 * The Promise:

""Hold RB to flip...wait, what? How did you do that?""
 * Psycho Strings: Musics associated with the Flood.
 * Recurring Riff - Countless examples, eg "A Walk In The Woods", "Rock Anthem For Saving The World", "On A Pale Horse", "Enough Dead Heroes", "Under Cover of Night", "High Charity", "The Last Spartan", and "Finish The Fight".
 * Red Eyes, Take Warning. 343 Guilty Spark turns red when he's really upset, and about to go Axe Crazy.
 * Redshirt Army - The human Marines, though they Took a Level In Badass in the sequels (but even in the last game they still can't drive worth a crap).
 * Indeed, Marines go from easily killed cannon fodder in Halo 1 to serviceable NPC companions who can fight an Elite one-on-one and win in the sequels.
 * Running Gag: The Rookie naps whenever he has free time.
 * Scenery Porn: And how. Has some of (if not) the best sky boxes in videogames.
 * Sequence Breaking - Common in the first two games, although Bungie tried to patch up the holes in the second, eg with instant-death Invisible Walls.
 * Serial Escalation: Forge World in Reach is the biggest playing area Bungie has ever created, basically larger than any of the campaign levels they've made, including a remake of Blood Gulch nestled in a corner of it. Made specifically for Forge, it has over 150 Forge objects available, in addition to new Forge mechanics, such as making an object float in place, snapping to specific degrees, or nudging it by single coordinates. Bungie is so proud of it that they're shipping five maps made in Forge World on the disc.
 * Shoo Out the Clowns - In Halo:CE and Halo 3, you are usually accompanied by UNSC Marines that lighten the mood with their chatter. Near the end of both games, when the Flood spreads and main characters begin to die, they are absent.
 * Short-Range Long-Range Weapon: Besides the usual "close range shotgun", the assault rifle in the first Halo is criminally inaccurate and essentially useless past about a couple dozen feet. This gets corrected in Halo 2, where they give you what is functionally the same weapon but make it a small submachine gun instead (which can be dual wielded), and in Halo 3, where the revamped assault rifle is more accurate but has a lower rate of fire and smaller magazine size as a a trade off, making it much more like a "modern day" standard FPS assault rifle.
 * Slap Slap Kiss - Buck and Dare have this relationship.
 * Sniper Rifle: All the Halo games feature these. The Bungie.net website hosts a 134-slide presentation all about the process of balancing the Halo 3 version of the weapon.
 * Soft Water: Played straight at least twice, where MC jumps into a pool from the T R in the first game, and when he gets knocked into the lake during a cutscene in the second game, but subverted most other times, where of course, falling too far is instant death, water or not.
 * Soundtrack Dissonance - Intense battles with elevator music, anyone? Examples: several rooms in the Assault On The Control Room mission, where many of the enemies are sleeping when you first enter, but the music stays the same when they are alerted, the Cairo Station hangar battle with New Age style music, and the first mission of Halo 3, which is anything but "A Walk In The Woods"(the name of one of the musics).
 * Spiritual Successor (The series is made by Bungie, who also created the Marathon games. Red vs. Blue references this now and again.)
 * There are also several multiplayer ones. For example, Guardian is a spiritual successor to the Halo 2-era Lockout, Sword Base is a spiritual successor to both Prisoner and Boarding Action, etc.
 * The Stinger
 * Stealth Pun - In ODST, you get the achievement "Audiophile" by listening to audio files.
 * Sticky Bomb: Plasma Grenades
 * Suicidal Overconfidence (Averted with the Grunts, who will commonly break ranks and flee if you kill their more powerful allies. Even if backing up and attacking you while doing so, they will frequently sound pretty scared, taken very literally in Halo 3, where the Grunts sometimes can and will grab two plasma grenades, prime them, and charge at you screaming at the top of their lungs.)
 * Watch when the Grunts get desperate just right in front of you.
 * Elites flee from the player in Halo 1 and Elites, Flood, and most lesser Covenant flee from the player in Halo 2.
 * Super Drowning Skills - Mostly averted, but in some places, such as on the level "Sierra 117", bodies of water are made instant-kill zones to prevent the player from Sequence Breaking or getting stuck.
 * Supporting Leader: Buck fulfils this in ODST.
 * Suspicious Videogame Generosity - Just stumbled across a shiny new rocket launcher/fuel rod gun, plus a stack of spare rockets/rods? Yeah, you'll probably be seeing either a tank or a Hunter pretty soon.
 * Swamps Are Evil - Guess where the Flood is discovered. Overall the atmosphere of that level in the first game.
 * Tentative Light
 * The Dev Team Thinks of Everything: See What the Hell, Player? below.
 * In the third game, there is a glitch that allows you to If this happens, he'll state "Aren't I supposed to be immune to this?"
 * The Squad: The main focus in Halo 3: ODST and Halo: Reach.
 * Transformation Trauma - The real-time assimilation of allies and enemies by the Flood in Halo 3. At least you have a second to shoot the infection form off of them.
 * Trope Codifier / Trope Maker: The original Halo didn't actually pioneer any of the unique gameplay features it's famous for (all of them, from vehicle sections, to radar, to limited inventory, to regenerating health, to melee attacks, to seperate buttons for firearms and grenades, had all been done before in previous PC FPS games), but it is unquestionably the game which combined them all into one package and popularized them to the point that most modern First Person Shooters now use most of them by default.
 * Two-Part Trilogy (Halo 2 and 3, though it was in part because they ran out of time after finishing the engine.)
 * Unexpected Gameplay Change (Combat Evolved ends with a timed driving mission through an obstacle course)
 * Halo 3 repeats that, but is has become undeniably more perilous in nature since its Halo 1 days.
 * The Banshee and Hornet flying sequences may fith this too.
 * Unexplained Recovery: When Johnson shows up in Halo 2, a Marine asks him how he got off Halo alive (the player saw him being overrun by Flood on video.) His response? "That's classified." The actual answer is a major subplot in First Strike;
 * RetConned in the Halo Graphic Novel:.
 * United Nations Is a Super Power: The United Nations in Halo founded both the Unified Earth Government (UEG) and the UN Space Command (UNSC); the UEG absorbed its parent organization into one of its branches, but was itself eventually subsumed during the Human-Covenant War - by the UNSC, which now rules all of humanity in the Milky Way galaxy.
 * Video Game Caring Potential (The common AI marines. Some may also feel very sorry for the Grunts.)
 * Don't forget the Engineers. Simple creatures who take no hostile action against you, they provide energy shields to the Covenant, which can make killing them necessary but cruel.
 * Video Game Cruelty Potential (Plasma Grenade + Grunts = Hilarity Ensues. Also, smacking up enemy corpses after they're already dead. Also more hilarious if they run into their allies, making them a suicide bomber.)
 * "OH NO! NOT AGAIN!" * boom*
 * And you can shoot specific limbs on the grunts. Watch them slowly try to limp away...
 * Vehicles, anyone?
 * The effect of the Grunt Birthday Party Skull, which causes confetti to pop out of a Grunt's head upon scoring a headshot, accompanied by the sound of small children shouting "Hooray!"
 * Bungie confirmed it to be a shout out to Viva Pinata, even mentioning that the Viva Pinata team sent them the actual audio file used in the game.
 * Virtual Paper Doll: In Halo 2 multiplayer you could choose to be a Spartan or Elite. Halo 3 added a range of customisation options for each. And Reach is playing this to the hilt, with an impressive number of unlockable items, which carry over to campaign (and vice versa).
 * And how! http://www.youtube.com/watch?v=Jgo 3 p FR Qe O 4
 * And Your Reward Is Clothes: In Halo 3 and Reach getting achievements gets you a better selection of armour.
 * Voice with an Internet Connection: Cortana.
 * Walk It Off: Title dropped in the first level of the third game (after hitting the ground at terminal velocity).
 * Wave Motion Gun - The Scarab's cannon, and the Fuel Rod Cannon somewhat.
 * We Cannot Go on Without You: If Cpt. Keyes dies on "Truth and Reconciliation", it's Game Over}
 * What the Hell, Player?:


 * This one actually falls under The Dev Team Thinks of Everything, and it's a small easter egg. The Elephant tank is so large that, using conventional means, it's impossible to flip, and it's so heavy, and drives so slowly, that you can't really cause it to flip by manoeuvring. It's almost always either due to a glitch, or intentional action by the player.
 * Shoot your commanding officer in the face, and your crewmates' reactions are, well, interesting to say the least.
 * Weapon Tombstone: The live-action trailer for ODST features the 'Helmet, boots, rifle' field burial with the equipment updated appropriately.
 * A few of these can be seen by the Hillside Memorial in the Halo 3 ending.
 * You Just Had to Say It: In Halo 1's third level.
 * Your Mom (Avery Johnson makes reference to this, saying "I would have been your daddy but the dog beat me over the fence!" in the first game, which has been referenced throughout the series numberous times.)

"Oh. And your poet Eliot got it all wrong. This is the way the world ends."