Alien Blood: Difference between revisions
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{{trope}}
[[File:
{{quote|''Well, I see your problem: You're bleeding tang!''
On the outside, they may be [[Human Aliens]], completely indistinguishable from us [[Puny Earthlings]]. Or they can be shapeshifters. Or [[Rubber Forehead Aliens]]. Whatever...
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With [[Human Aliens]], this is a very mild case of [[You Fail Biology Forever]]: Since the skin is translucent, a creature with different-colored blood wouldn't have the same skin color as a human...if the skin is white. Darker-skinned aliens, or ones with scales, feathers, hair, or something else hiding their skins avert this problem, albeit probably unintentionally.
Of course, here on Earth, all vertebrates, the largest and most complex members of the animal kingdom, have red
In [[Video Games]], [[Aliens and Monsters]] often have different colors of blood than red, frequently as an optional mode, to appease the [[Moral Guardians]]. [[Family-Unfriendly Aesop|Because it's okay to shoot non-human beings if they don't bleed the same way
Assuming it's not red like human blood, [[Aliens and Monsters]] most commonly have blood that's either black or some bright color usually associated with something unhealthy, like orange, green, or yellow (blue and violet are possible, but rare). Robots and Cyborgs, on the other hand, are often shown squirting white fluid when damaged (or black, which is arguably oil). The white blood can be traced back to the android in the movie [[Alien]], who was practically overflowing with the stuff and very squishy compared to most robots in film at the time. In a case of reality imitating fiction perflourocarbon based blood substitutes are white and carry oxygen much more efficiently compared to red blood cells.
Not to be confused with [[Blue Blood]], even if it is, in fact, blue. (Though some blue-blooded aliens can, in fact, be [[Blue Blood
▲Not to be confused with [[Blue Blood]], even if it is, in fact, blue. (Though some blue-blooded aliens can, in fact, be [[Blue Blood|Blue Bloods]].)
{{examples}}
== [[Anime]] and [[Manga]] ==▼
* In ''[[Tower of God]]'', Ren's creatures are green-blooded. And orange. And red. [https://web.archive.org/web/20130719223331/http://eu.batoto.net/comics/2011/10/31/t/read4eae5ff3e085a/20111028195630_IMAG01_24.jpg
▲== [[Anime]] ==
▲* In ''[[Tower of God]]'', Ren's creatures are green-blooded. And orange. And red. [http://eu.batoto.net/comics/2011/10/31/t/read4eae5ff3e085a/20111028195630_IMAG01_24.jpg\] [http://eu.batoto.net/comics/2011/10/31/t/read4eae5ff3e085a/20111028195630_IMAG01_25.jpg\]
▲* The Mulians in ''[[Rah Xephon]]'' are [[Human Aliens]] with blue blood.
* The Emilys from ''[[Soukou no Strain]]'' bleed green.
* Partially subverted in ''[[Tenchi Muyo!]]'' when Tenchi was surprised to find that alien princess Aeka had red blood. Villainous Kagato, on the other hand, bled green.
* In ''[[Claymore]]'', the shape shifting, human-eating ''yoma'' have purple blood. The titular half-yoma warriors have red blood, normally, unless they Awaken, permanently turning into their [[Super-Powered Evil Side]]. From then on, they'll bleed purple.
* Subverted in ''[[Neon Genesis Evangelion]]'', where the robots ({{spoiler|well, bio-engineered giant cyborgs encased in [[Powered Armor]]}}) [[High-Pressure Blood|bleed lots and lots of red]], but played straight with the blood of the second angel, {{spoiler|used as LCL--the orange liquid that fills the cockpits}}.
** Also played straight with Unit-02, which bleeds purple [[High-Pressure Blood]].
* While not aliens or monsters, transformed wielders from ''[[Witchblade (
* Judging from the scenes where Nephrite is bleeding and dying, the Dark Kingdom Generals from the first season of ''[[Sailor Moon]]'' have green blood, even though they have normal human skin tones and the insides of their mouths are pink (as can clearly be seen on any of the numerous occasions when they [[Evil Laugh]]).
** Zoisite, at least, has been shown to have normal red blood (in episode 34 Mamoru injures him with his rose). Nephrite is apparently [[Black Blood|somewhat of a case of censorship]].
** Kunzite appears to have hot pink blood (in the episode where a Crescent Beam cuts his hands). Perhaps he's a Klingon?
** In a rather bizarre reversal of this, the aliens Eiru and An from the first arc of the second season have red blood, even though they have green skin and the insides of their mouths are clearly also green.
* The androids in the ''[[Ghost in
* Magic-users in [[Dorohedoro]] have black particles mixed in with their blood.
* The Aragami of ''[[Blue Seed]]'', being essentially plants, have green blood; this extends to the half-Aragami mutants like Kusanagi, though the latter looks extraordinarily enough not to be mistaken for a normal human. (The color of his blood [[Black Blood|still helps]], considering that he tends to get injured ''a lot''.)
* In the [[Hentai]] anime ''[[La Blue Girl]]'', Shikima demons have blue blood; this is also the case of the heroine, Miko Mido (hence the title), since she is [[Half-Human Hybrid|half-Shikima]].
* In ''[[Dragonball Z]]'', Namekians like Piccolo and Nail bleed purple.
** ''Dragonball Z'' has a few other instances as well. Most villains bled purple or dark red, but occasionally you'd see something weirder. For instance, Zarbon (one of Frieza's henchmen) bled dark blue, which was also reflected in his skin color.
** On a side note, there was at least one instance of a retconned blood color: Piccolo's blood was red in an early DBZ episode, censored to light green in the dub. It later became purple and was no longer censored.
* In [[Daft Punk
* In ''[[Blue Drop]]'', the [[Scary Dogmatic Aliens|Arume]] have white blood, as do their [[Half-Human Hybrid|halfbreed kids]].
* In ''[[Genesis Climber Mospeada]]'' (a.k.a [[Robotech]] Invids) the aliens learn to get human appearance, however their blood is green, which leads to [[The Reveal]] that {{spoiler|Marlene is actually an Invid}}
* Most of the Boomers in ''[[Bubblegum Crisis]]'' tended to bleed bright orange fluid when damaged, which is unusual for robotic enemies.
* Non-alien example from ''[[Naruto]]'': Tobi bleeds white...''stuff''. {{spoiler|Going by future revelations, it seems to be a sort of human flesh/plant matter hybrid.}}
* The impetus for the war between two groups of people in "Seiketsu no Hagurama", with one side having red blood and the other with blue blood. The main character and [[Gadgeteer Genius]] is a blue-blooded prince who discovers to his horror that all his steam-punk looking inventions have been used to eradicate the remaining refugee red bloods by orders of his father and king.
== [[Comic Books]] ==
* Even though he's not an alien, That Yellow Bastard from ''[[Sin City]]'' had yellow blood, since he's incapable of processing bodily waste, which means his yellow blood is... [[Squick|exactly what it looks like]] due to [[Rule of Cool]].
* One character in ''[[Hellboy (
* [[Incredible Hulk
** [[Red Hulk]] has glowing yellow blood.
* Following Vanya's transformation into [[The Umbrella Academy|the White Violin]], she has grey blood.
* In the (now closed) comics ''Gea'' the theme is that extradimentional beings lives on the Earth and are the basis of every myth or religion. As in ''[[Men in Black (
== [[Fan
* In the ''[[Doctor Who]]''/''[[
{{quote|
'''The Doctor''': [[Sarcasm Mode|Is it?]] }}
* In the ''[[Mass Effect]]''/''[[Robotech]]'' crossover ''Protoculture Effect'', {{spoiler|Shepard}} is revealed to have green blood when he gets injured. {{spoiler|He explains that this is because he's a [[Half-Human Hybrid|quarter-]][[Heel Face Turn|Invid]].}}
* Youma in the stories of the ''[[Sailor Moon Expanded]]'' project have ''turquoise'' blood.
== [[Film]] ==
* One of the princes in ''[[Stardust (
* The Xenomorphs in ''[[Alien (
* The [[Predator
* Not quite aliens, but one of the first hints that the employees of the Titty Twister in ''[[From Dusk
* In [[John Carpenter]]'s ''[[The Thing (
** The character who proposed and carried out the test did it because he figured that the blood might well do that, as severed pieces had previously been observed operating independently.
* The monster ''[[Gamera]]'' has green blood. Not that it's ever likely to be useful as [[The Reveal]], but notable anyhow for the sheer volume you will be seeing in any given
** His enemy Gyaos' blood was pink.
* The alien opera singer in ''[[The Fifth Element]]'' has royal blue blood.
* Karl Ruprect Kroenen from ''[[Hellboy (
** Also in the ''[[Hellboy (
** In ''[[Hellboy II]]'', the elven royalty has greyish yellow blood.
* In ''[[Star Trek VI:
** Also in the movie, there's an inversion where an apparent Klingon's regular red blood leads to the revelation that it's actually a human in a [[Rubber Forehead Aliens]] disguise. In the original theatrical edit of the movie, the unmasking scene was cut, [[Series Continuity Error|making the scene seem like a bizarre oversight]].
* The Moorwen from ''[[Outlander (
* The Strangers from ''[[Dark City]]'' have black blood.
** The Strangers from ''[[Dark City]]'' melt into goo or turn red and dissolve into flakes when they die; the dead human bodies they use as vessels have black blood.
* The Tall Man in ''[[Phantasm (Film)|Phantasm]]'' gets his hand caught in a door at one point, and the boy cuts off his fingers with a blade. They bleed yellow; the director noted on the commentary that most test audiences were shocked at the unusual color.
* In ''[[
* Buckets of black and green Deadite blood get thrown around in the ''[[Evil Dead]]'' movies.
* In [[Tim Burton]]'s ''[[Alice in Wonderland (
* Most of the Graboid blood seen in the ''[[Tremors]]'' films is an orangish-red color, just different enough from the maroon-red of human blood to avert an R rating.
* Rahu and Ketu (who are definitely not human)'s blood in ''[[The Return of Hanuman]]'' is green.
* In the Disney ''[[John Carter (
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* The mutants from the future in the ''Mindwarp'' kid lit series had metallic silver blood.
* Many dragons, in all forms of media, have boiling blood, including in the ''[[The Malloreon]]''.
* The main characters in [[Robert A. Heinlein]]'s ''[[The Number of the Beast]]'' discover the "ranger" hassling them isn't human when they discover that "he" has blue-green blood.
* The Orcs in ''[[The Lord of the Rings]]'' and its associated works have black blood.
* Inverted in ''[[
* ''And The Devil Will Drag You Under'' by L. Sprague deCamp had a race of alien demons with blue blood. "Not dark blue, but a nice, pretty sky blue."
* ''[[Discworld]]'' elves have green blood too - just like some other famous fictional beings with pointy ears. The explanation is that they have copper based blood, since elves are [[Cold Iron|allergic to iron.]]
* In [[Neil Gaiman]]'s short story ''[[A Study in Emerald]]'', an alternate-universe re-imagining of "A Study in Scarlet", the central crime scene is splashed with green blood, since in this universe all those of noble blood are [[Half-Human Hybrid|descended from Lovecraftian Elder Gods]].
* In ''[[
* The dragons from [[Anne McCaffrey]]'s [[Dragonriders of Pern]] series have green, copper-based blood.
* Denizens of the House in ''[[Keys to
* The demons in [http://bbs.stardestroyer.net/viewtopic.php?t=118769&highlight= Armageddon: The Salvation Wars] have yellow, green, and acid blood. {{spoiler|Not an instance of the [[Rule of Cool]], however. They've been evolving in a ''very'' different environment for the past 5 million years. Quite possibly the colors have something to do with the environment...}}
** The angels in the sequel have silver or white blood. For both species, blood color was observed to function like blood groups in humans for purposes of transfusions.
* Unicorns in the ''[[Harry Potter (
* The K'da of ''[[Dragonback]]'' have black blood, which shows through their scales when they go into battle mode, making them look even more intimidating.
* Averted in ''[[The Forever War]]''. "All God's creatures got hemoglobin"
* S.L. Viehl's Jorenians have green blood. [[Bizarre Alien Biology|And a few other odd anatomical traits]].
* In [[Robert E. Howard]]'s "[[Rogues in
* It took nineteen books {{spoiler|and a bad-luck-induced paper cut}} to find out that Aahz from ''[[Myth Adventures]]'' has yellow-green blood.
* ''Hostess'' by [[Isaac Asimov]] features a race of yellow-coloured, six-legged space cows. Their blood is clear, and Asimov goes into detail as to why that is: they do not require iron in their blood.
* Elves in [[Simon R. Green]]'s various urban fantasy novels have golden blood.
* The Parshendi in [[
* {{spoiler|''Sympaths''}} bleed blue in J.R. Ward's [[Black Dagger Brotherhood]] series.
* White Court vampires from ''[[
** In fact, this trope is so common among the Dresdenverse's [[Fantasy Kitchen Sink|many, many kinds of monsters]] that by the later books, "Bleed for me" has become the standard test for a mortal trying to decide [[Vampire Invitation|whether to invite a stranger]] into their home.
* [[Society of Immortals|Humanity]] in [[Robert Reed]]'s ''Great Ship'' universe have very dark red, almost black blood due to the huge amount of genetic engineering and extra bits of DNA and cells in their bloodstream. The Remoras, twisted by radiation and their own tailored viruses, often have odd blood - one of the characters, Orleans, has very thick black blood.
* The title character of ''The Alien'' by L.P. Davies was reported to have very ''unusual'' blood, with oddities about its color and some components that seemed more vegetable than animal -- leading to the suspicion that he ''was'' a space alien ... and might just have some connection with the sabotage of a government research facility. ''He'' couldn't answer any questions, because he'd lost his memory ... {{spoiler|and because he was a government agent himself, impersonating the (dead) possible alien/saboteur in hopes the man's comrades would contact him. It turned out the dead man ''wasn't'' an alien: the oddities in his blood were the result of an unethical medical experiment performed on him without his permission. Bitterness over ''that'' led him to help the foreign saboteurs. No genuine extraterrestrials were involved.}}
* Jack Williamson's ''Golden Blood'' concerns a gas from a volcanic fissure which permeates the flesh of anyone who spends enough time in proximity to it. Yes, it turns the blood, and eventually the skin and to a lesser extent hair and eyes, metallic gold in color. It also halts or at least slows aging (the [[Big Bad]] was [[Really Seven Hundred Years Old|well over fifteen centuries old]]), enhances strength, and in the case of two animals seen, causes growth to unusual size.
== [[Live Action TV]] ==
* Vulcans in ''[[
** To a limited extent, ''[[
** The shapeshifters of ''[[Star Trek
** The Andorians have blue blood, which is just icing on the cake since they also have blue skin and antennae. Bolians also have blue blood (and, again, blue skin).
** While the pigment in Vulcan and Romulan blood may use copper similarly to how human blood uses iron, the pigment would not be all that much like hemoglobin. The usual color of copper-based respiratory pigments in Earth life (which are similar to hemoglobin) is blue.
** Cardassian blood is black. This also applies to other animal life native to Cardassia Prime, such as the raw fertilized taspar egg Picard ate in "Chain of Command".
* In the ''[[Buffy the Vampire Slayer]]'' episode "Earshot", a mouthless demon's fluorescent blood splashes onto Buffy's hand and gives her an "aspect of the demon", which turns out to be hearing people's thoughts.
** Similarly, in ''[[
* ''[[Power Rangers]]'': A reversal occurs when a villain's human nature is revealed when he does bleed human blood. There was also something of a straight example with Lipsyncher, who "bled" lipstick when her cheek was scarred by Jason's sword.
** This happened a couple of times in ''Brimstone'', where someone Stone suspected of being one of the 113, was revealed to be human because they bled.
* The alien human hybrids on ''[[The X-Files]]'' bled green blood that could produce a deadly gas (to non-aliens) when exposed to the atmosphere, as did the aliens themselves. This got [[Lampshaded]] in a heartbreakingly awesome way in "The Unnatural". Ironically, this means that Mulder could see an alien-human hybrid bleeding, and not know there was anything weird going on because he's red/green colorblind!
* An episode of ''[[
* While the alien Clark Kent bleeds red blood on the few occasions he's hurt enough to bleed in ''[[Smallville]]'', cyborg human Victor Stone (Cyborg of ''[[Teen Titans (Comic Book)|Teen Titans]]'' fame) bleeds black mech fluids, keeping in line with the comics. This does not carry over to the ''[[Teen Titans (
* The alien teenagers of ''[[Roswell]]'' have both blood and saliva that looks normal to the naked eye but not under a microscope.
* In the TV series spin-off of ''[[V (TV series)|V]]'' the distinctive reverberation of the Visitor's voices was dropped due to the expense of sound dubbing, and the Visitors were given cliché green blood instead. Some viewers missed the plot point about a human who'd cut his hand actually being a [[The Mole|Visitor infiltrator]], as they lacked a colour television at the time.
* Luxans in ''[[
* ''[[Kamen Rider Blade]]'' has the [[Monster of the Week|Undead]], who bleed green. This serves as a [[Chekhov's Gun]] as {{spoiler|one of the main characters is an Undead himself and another main character becomes an Undead in the finale, and they both bled this color.}}
** The gun goes off ''cross-series'', as in ''[[Kamen Rider Decade]]'', {{spoiler|the [[Big Bad]] of Ryuki's world turns out to be an undead}}.
* Doyle, an android in ''[[Andromeda]]'' "bleeds" superconductor fluid when cut. Due to her in-built [[Weirdness Censor]], ''she'' sees it as ordinary blood, thinking herself human.
* ''[[Doctor Who]]'': Time Lords (at least in the [[Doctor Who Expanded Universe|Expanded Universe]]) have blood that's a deep orange. It's sometimes described as basically red, but "orange-ish".
** In "[[Doctor Who/Recap/S18
** In the movie it's red, but is different enough from human blood on a cellular level that Grace describes it as "not blood" when she looks at it under a microscope.
* ''[[Babylon 5]]:'' The Drazi have white blood. On the other hand, the other major
* Basco ta Jolokia of ''[[
* One ''[[I Dream of Jeannie]]'' episode had Majors Nelson and Healy crash-land an experimental spacecraft in a backwoods area ... and get captured by hillbillies who figured they must be Martian invaders. One local raised the question, "Do Martians have blood?" and another replied, "No, they don't ... or if they do, it's ''green''!" The astronauts quickly decided admitting to being Martians was safer than submitting to a blood test '''by pitchfork'''.
== [[Tabletop Games]] ==
* ''[[Warhammer
** Perhaps as an intentional aversion of the '[[Human Aliens]] have coloured blood and pink skin' error, the Tau do not look like humans partly ''because'' they have deep blue-purple blood (their equivalent of haemoglobin uses cobalt instead of iron), which has the expected effect on their skin tone. In one of the [[Ciaphas Cain]] novels, Amberley Veil notes that it smells horrible.
** The Orks, who are in fact [[Plant Aliens|genetically-engineered carnivorous space-fungi]], have green skin but red blood (and mouths). It wasn't always this way and earlier sourcebooks for the game described Ork blood as green, but eventually red gore was decided on. This was explained in ''White Dwarf'' magazine with an in-universe biologist's report: while Orks' dense green skin is a chlorophyll- and spore-producing layer, the rest of their body is relatively normal meat, and they have a normal (if supercharged) food-based metabolism to support it. On the same page, the game developers gave the real reason: green injuries on green-skinned aliens were hard to notice, and made the models look like "they've had an accident eating a gooseberry squishy".
** The Eldar have red blood like humans, but it crystallizes instead of forming scabs.
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* Bungie seems to do this quite a bit:
** In the ''[[Halo]]'' universe, elites and jackals have purple blood, hunters orange, brutes and prophets red, grunts luminous blue, and drones whitish green. The Flood are a different story: they don't bleed ''just'' blood; Infection Forms will [[Body Horror|liquefy the internal organs of the host]], so in reality they're spilling out their entrails ''in liquid form''. Unless the "Grunt Birthday Party" skull is enabled, in which case headshots will cause the grunts to [[Silliness Switch|bleed confetti and cheering]].
** In the ''[[Marathon
* ''[[
* In the ''[[Mortal Kombat]]'' games, Reptile and (until recently) Sheeva have green blood. Cyborgs have black oil instead of blood, Blaze has molten lava, Noob Saibot has black...wraith juice and {{spoiler|Cyber Sub-Zero bleeds a light blue combination of oil and antifreeze}}.
** This is even lampshaded in ''[[Mortal Kombat 11]]'', in an intro between Sheeva and Skarlet; Skarlet (a practitioner of [[Blood Magic]]) assumes Shokan blood is green, and when Sheeva tells her it's as red as hers, Skarlet wonders if she's from "a different timeline".<ref>Close, but off, as the green-blooded Sheeva is from the previous timeline.</ref>
* Similar to the Vulcan example above, a major plot point in ''Star Ocean: First Departure'' is that Fellpool have copper-based blood - but everyone from that planet has properly pink skin (or tan, in the case of the Highlanders). The only outward difference from <s>humans</s> Terrans is their tails and sometimes fangs.
* In ''[[Mass Effect]]'', a common taunt directed at humans who express conciliatory philosophy toward the varied races of the galaxy is "Do you remember what color your blood is?" Just for fun, stand up to the leader of the isolationist "Earth First (we can exploit the other planets later)" Terra-Firma party.
** In spite of this, the player doesn't actually see a lot of oddly-colored alien blood in the game, but the Krogan do bleed bright orange and the robotic Geth "bleed" white fluid. The [[Playing
** Thorian creepers don't bleed per se, but they do generate splatters of brownish-green material when they die. There's also a scene where Shepard has the option to [[Mercy Kill]] a room of Salarians, revealing orange blood.
*** Oddly enough, Salarians have ''green'' blood in the second game.
** Blood colors in ME also qualify for [[Shown Their Work]] credit, as species with alternate colors of blood have skin and/or mucous membrane coloration to match (asari have various tones of blue or purple skin as well as lightly blue-tinged sclerae; krogan, who bleed orange, can exhibit red or yellow eyes; Garrus and several other light-colored turians have a faint purplish cast to their facial features).
** The krogan have another odd variant on blood, as well. They don't actually have a nervous system made up of nerve cells; rather, they have a ''second'' circulatory system consisting of an electrically conducive fluid that runs through their body. As a result, krogan cannot be paralyzed. This physical trait was evolved by just about every species on Tuchanka, the krogan's [[Death World|homeworld.]]
** Shown in practice in ''[[Mass Effect]] 2'', when {{spoiler|Garrus}} gets shot during his recruit mission, and bleeds blue all over the floor, and is later seen with purple scar-tissue over third of his face, mostly covered with cybernetics.
* In ''[[Metal Gear Solid 4: Guns of the Patriots]]'', [[Super Soldier]] Raiden has white nanomachine-based blood, [[What Do You Mean Its Not Symbolic|the potential symbolism of which]] [[Ho Yay|is not lost to]] [[Depraved Bisexual|Vamp]].
** This is a reference to ''[[
* The aliens (and the cockroaches, which is [[Truth in Television]], see below) in ''[[Half-Life (
* In the original version of ''[[The Legend of Zelda: Ocarina of Time
** Which is why it was changed ''again'', back to red, for subsequent releases.
** Interestingly, in ''Majora's Mask'', the enemy Gerudos spray ''blue'' blood when you hit them. Hmm.
*** Must be [[Blue Blood|royalty]], then.
* Like in Middle-Earth, in [[
** Similarly, the blue skinned draenei have blue blood. That, and their unguligrade appearance has caused a few fans to compare them to the above mentioned [[Warhammer
** Demon blood seem to be fluorescent green (which is pretty much the trademark colour of fel energy).
*** Sufficiently powerful demons have [[Rule of Cool|lava instead of blood.]]
* The ant-like enemies found in ''[[
* The Necris of ''[[
* The Cacodemons and Barons of Hell in ''[[Doom]]'' appear to leak blue and green fluids when they die, even though their blood spatter when hit while alive uses the same red color as seen for other creatures in the game. [[Word of God]] says this is because both ''do'' have red blood, but their ''innards'' are blue/green. However it has been suggested that they simply didn't have a way to color-shift the red blood splatter sprites and did not want to waste space on differently-colored graphics. Some modern source ports have remedied this by allowing the blood color to be shifted for different enemies.
* Clowns in ''[[Penny Arcade Adventures]]'' bleed rainbow colors.
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** Which, like all things ''[[Dwarf Fortress]]'', can be modded to taste. Someone even made a ''Homestuck'' (below) troll mod covering the entire hemospectrum.
* The Maians in ''[[Perfect Dark]]'' have green blood. The Skedar, meanwhile, have red blood.
== [[Web Comics]] ==
* Hall and Eva from ''[[Supernormal Step]]'' are [[Immortality|Type I immortals]] that [[Black Blood|bleed black]] when injured.
* The alien that attacked [[Red Shirt|Dykowski]] in ''[[Sluggy Freelance]]'' has ''[https://web.archive.org/web/20030830133646/http://beta.sluggy.com/daily.php?date=971013 concentrated orange juice]'' [https://web.archive.org/web/20030830133646/http://beta.sluggy.com/daily.php?date=971013 for blood.] The bad part, according to the crewmember studying the creature, is that it's the ''homestyle kind''.
{{quote|
* The [[Our Trolls Are Different|trolls]] of ''[[
** Karkat's blood is a
** Kanaya has jade blood, which also lets her enjoy Alternia's blistering sunlight and be awake during the day when the undead normally stir, making her Alternia's [[Goth]] equivalent. It also marks her as one of the only trolls to be raised by a virgin mother grub and one responsible for raising its egg.
** Feferi's blood is literally [[Purple Is Powerful|royal purple]], making her heiress to the throne, because it physically grants her protection from the [[Brown Note]] of her [[Eldritch Abomination]] guardian even at it's [[Apocalypse How|highest level]].
** Also, for some reason, troll robots and artificial limbs have blood. Equius uses this to give a rustblood he has a crush on a robot body with blue blood befitting his station. This makes her occasionally prone to violent outbursts, like Equius himself.
* [[The Dreamland Chronicles]]: [https://web.archive.org/web/20120624110059/http://www.thedreamlandchronicles.com/the-dreamland-chronicles/chapter-06/page-359/ Nicodemus -- green]
* Terronians in ''[[Cordless]]''. Their hair reflects their blood color.
== [[Web Original
* Most of the aliens living on Earth in the ''[[Global Guardians PBEM Universe]]'' bleed red, especially the Tautiq and the Pelkons (who are basically [[Human Aliens]] and [[Rubber Forehead Aliens]], respectively). The Delethai are the exception... they bleed orange.
** Sweet Synn and Black Angel, both of whom are demons in human form, bleed a thick, black ichor that smells vaguely of sewage.
* [http://stickpage.com/failedcontainmentplay.shtml Played with to ridiculous amounts in this stickfight where you can find Red, Blue and PINK blood!]
* According to the [[PPC]], [[Mary Sue]] characters bleed red or pink glittery blood, or in extreme cases, "only" glitter.
* Carmilla, a student at the [[Super-Hero School]] Whateley Academy in the webfiction ''[[Whateley Universe]]'', is mostly-demon, even if she looks like a hot 'urban vampire' goth kid. She bleeds a blackish-purple ichor which is definitely not blood.
** Same school: Eldritch is a mystical Artificer who bleeds a roughly-blood colored stuff that's too high in metals to be anything a human could have in his/her veins.
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* An episode of ''[[Megas XLR]]'' featured a shapeshifting [[Plant Aliens|plant alien]]. Once Coop discovered its true nature, he formed one of the robot's limbs into a chainsaw and got to work. The scene of the chainsaw going into the creature while green goop flies out goes on for [[Overly Long Gag|over thirty seconds]].
* [[Futurama|Kif Kroker]] bleeds viscous green blood. It's tangy!
* Agent Bishop (''[[Teenage Mutant Ninja Turtles 2003
* ''[[Invader Zim]]'': A scene near the end of the episode "Lice" seems to show that Zim (and by extension, all Irkens) has green blood, as he's skinned and the tissue underneath is green. Of course, considering that Zim's ''skin'' is green, it makes sense.
** [[Word of God]] says that Irkens have see-through pink blood.
* In the ''[[Fish Police (
* In the ''[[Thundercats 2011
* Roger's blood from ''[[
* Most of the alien blood in ''[[Sym
* Parodied in the ''[[The Simpsons]]'', where Moe is trying to convince a group of kids that he's not a troll because he bleeds red. Then he nicks his finger, and a frustrated Moe sees green blood spurting from the wound.
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* While certainly not aliens, most insects bleed light yellow (as mentioned above), some green, molluscs and crustaceans bleed blue.
** The most famous of these is the humble Horseshoe Crab, with blue copper-based blood. Scientists routinely extract blood from the crabs for all kinds of medical procedures & tests, then release the animals after they've regenerated their blood.
** Tunicates (sea squirts) have blue-green blood due to vanadium compounds, of all things (though they ''also'' have much iron in the same blood cells, go figure). Which makes them inedible for many critters (a nice trait for something as sessile as an oyster, but much less armored) and possibly gives some other benefits. The impressive part is that they have to extract it from sea water<ref>vanadium is omnipresent, but in very low concentrations: around 2 mg/m<sup>3</sup> in seawater and half as much in fresh water - rocks have far more, but its common forms are just not very soluble</ref>. Not that they are the only ones using it, but other creatures (including humans) need very little.
** Inverted with deep-sea tube worms, which have red blood like ours despite being from a taxonomic line in which iron-based blood pigment isn't expected.
* The trope of artificial humans having white blood possibly comes from the early research into oxygen-carrying temporary blood replacements for emergency surgery. Some of these work using very different chemical processes to naturally occurring blood (of any colour) and look a lot like milk.
* Sulphur can turn a person's blood green.
** And carbon monoxide poisoning turns it an even brighter, unnatural-looking shade of red.
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[[Category:Bizarre Alien Biology]]
[[Category:Bloody Tropes]]
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