Metal Slug/Characters

Despite the fact that the plots of the games usually appear barebone, Metal Slug has its fair share of characters, all of whom have a great deal of backstory to them. The backstory to each character is where the real plot points stand out.

Marco (Marchrius Dennis Rossi)
Marco joined the military's vocational school following technical high school, and after graduating, joined the Peregrine Falcons Squadron, soon becoming its leader. Though generally a good-natured guy, he tends to flip his shit whenever Morden is mentioned, given the fact that Morden was responsible for the deaths of many of his good friends.

Marco Rossi's Tropes

 * The Ace
 * Berserk Button: Anything involving General Morden.
 * Handguns: His attack power is doubled while firing a handgun.
 * Nice Guy
 * "Open!" Says Me: An alternate melee attack when he opens chests is to simply kick them open.
 * Overprotective Dad: Put a programming lock on ALICE to keep certain "adult" terms, particularly those dealing with charm and seduction, from even entering her vocabulary.
 * Playful Hacker: During his spare time.
 * Vitriolic Best Buds: With Tarma.
 * Weapon of Choice: The Heavy Machine Gun.

Tarma (Tarmacle Roving the Third)
Son of a military man, he entered the Special Forces Training School after finishing junior high. At age 20, he joined the Peregrine Falcons on a mission to rescue the president, at which point he met Marco, the two becoming fast friends. When he found out Marco had been selected to take part in the counteroffensive against Morden, Tarma was quick to volunteer. Though he often pokes fun at Marco, he holds his friend in the highest regard.

Tarma Roving Tropes

 * Ace Pilot: His specialty on the team starting in 6. He's the best at handling vehicles, and it translates to gameplay as tougher vehicles, stronger weapons in them, and new abilities.
 * Everything's Better with Motorcycles: His hobby in his spare time.
 * Vitriolic Best Buds: With Marco.
 * Weapon of Choice: The Shotgun.

Eri Kasamoto
Eri was found abandoned on the steps of a church. When she became wise to the ways of the world, she eventually ran off and became the leader of a gang of street kids. The Intelligence Department of the Regular Army noticed her leadership skills, and thus recruited her. She went on to receive spy training, and took part in a number of missions requiring assassination. She found these types of missions distasteful, and requested a transfer to the SPARROWS division. Given her impressive track record, it was approved. Once transferred to the SPARROWS division, she was assigned the role of team demolitions expert.

Eri Kasimoto Tropes

 * Action Girl: Kicks as much ass as any of the men.
 * Bare Your Midriff: Setting a trend, she wears a short sleeveless top and short-shorts, which exposes her belly, which somehow becomes the "uniform" for the female soldiers in the SPARROWS division.
 * Dark and Troubled Past: We need to reiterate that her old career as an espionage agency assassin was somehow so "distasteful" that she compared it unfavorably to blowing people up with grenades and flamethrowers.
 * Stuff Blowing Up: Starting in 6, her specialty is grenades.
 * Tomboy and Girly Girl: Eri's the Tomboy.
 * Weapon of Choice: The Laser weapon.

Fiolina "Fio" Germi
Daughter of the massively wealthy Germi Family, hailing from Italy. The Germi family has historically been a military family, sending their oldest into service, so naturally her father wished for a healthy son to carry on the name. However, following Fio's difficult childbirth, her mother was unable to bear anymore children, making it the first time the Germi heir was female.

Fio Germi Tropes

 * Action Girl: No less a capable fighter than any of the men.
 * Badass Adorable: Best exemplified by her victory animation of her falling down coquettishly. Mind you, this is after wiping out hundreds of enemy troops.
 * Bare Your Midriff: As is the norm with female fighters in the Metal Slug universe.
 * Guest Fighter: She is playable in King of Fighters: Maximum Impact 2.
 * Meganekko: An archetypical example in video games. She's got the cute look, modest personality, and is overall moe because of it.
 * More Dakka: Her Specialty from Metal Slug 6 onwards.
 * The Ojou
 * Tomboy and Girly Girl: Fio's the Girly Girl.
 * Weapon of Choice: The Rocket Launcher.

Nadia Cassel
Initially, Nadia wanted to go into the modeling business, but she couldn't stop eating, which meant she kept gaining weight, so she enlisted into the Regular Army for the exercise. Here, she discovered her skills as a soldier, and was chosen to help in stopping the Amadeus Syndicate from releasing its supervirus. Here, Nadia was a stand-in for Eri, who had been assigned to other duties. The one thing putting her apart from Eri is that her alternate melee weapon is a souped-up taser, capable of shredding the enemy. Unfortunately, due to some in-game bugs, she doesn't get as many points for using her melee.

Nadia Cassel Tropes

 * Action Girl: Runs and guns with the best of them.
 * Bare Your Midriff
 * Big Eater: The reason she joined the military is to lose weight.
 * Suspiciously Similar Substitute: To Eri.
 * Stun Guns: She uses a taser as her melee attack.

Trevor Spacey
Trevor received his first computer at age three. By the time he was seven, not only could he perform complex coding, he also worked on creating antivirus progams during summer break, many of which are still in use at the school he attended. When he ended up joining the Peregrine Falcons, he found a great deal of respect for Marco, whose own computer skills surpassed his own. Here, he acted as Tarma's stand-in. His melee involves kicking the enemy so hard, it shreds them apart; he gains double points for this, but he has to hold still.

Trevor Spacey Tropes

 * Armed Legs: His melee is a powerful kick called Knife Boots.
 * Asian and Nerdy: Korean and a Playful Hacker.
 * Playful Hacker: A point which causes him to get along with Marco, another playful hacker.
 * Suspiciously Similar Substitute: To Tarma.
 * White-Haired Pretty Boy

Crossover Appearances
Ralf and Clark, the Ikari Warriors, in between their appearances in the King of Fighters series, appeared alongside the core team for Metal Slug 6, and are back for Metal Slug 7/XX. Joining them in XX is Leona. A better amount of information about these three can be found on their respective series' page.

Ralf Jones
Aside from his participation in various fighting tournaments, little to nothing else is known about him or Clark. There's rumors flying around, but he tends to ignore them.

Though carrying half as much ammo and grenades as anyone else, Ralf makes up for this with his Vulcan Punch, capable of destroying tanks, and his melee speed is much faster than anyone else's (and his normal melee can also damage things that others cannot). He's also the only character capable of taking two hits. He's just that tough.


 * Dash Attack: His other special move, the Galactic Phantom Punch, where he charges forward and punches an enemy, releasing several fireballs on contact.
 * Heterosexual Life Partners: With Clark.
 * Hot-Blooded: The guy is willing to charge a tank with his bare hands.
 * Knife Nut: Collects knives as a hobby. Though ironically he's one of the few that doesn't use them on the battlefield.
 * Lightning Bruiser: He can run and jump as well as everyone else, has fast (and highly damaging) melee attacks, and takes 2 hits to kill, unlike most of his allies.
 * Made of Iron: Why can he take a tank shell? Just because he's that damn tough.
 * Older Than They Look: He was born in 1992, making him 13 years older than both Marco and Tarma, 16 years older than Fio, 18 years older than Eri and about 40 years old by the time of his first appearance. Official art still depicts him as looking just as young as Marco and Tarma.
 * One-Hit-Point Wonder: Averted: he can take two hits.
 * Rapid-Fire Fisticuffs: His special move, the Vulcan Punch.
 * Red Oni, Blue Oni: The red to Clark's blue.
 * Weapon of Choice: The Flame Shot.

Clark Still
Clark and Ralf have been longtime friends, even in the unit the two of them are assigned to.

Clark's unique ability is his Super Argentine Backbreaker, a special melee move capable of earning him a lot of points in a short time frame. He also gains a small window of invulnerability with each enemy he tosses with this. However, it only works on certain human-sized enemies.


 * Cool Shades: Much like Tarma. Echoing Tarma's relationship with Marco, the shades serve to differentiate Clark and Ralf.
 * Difficult but Awesome: If you can overcome its short range, the Super Argentine Backbraker will rip nearly any hoarde of (human) mooks a new one, earning you tons of points and a lot of invincibility time.
 * Hammerspace: In Defense, his special move is to pull out a large Exploding Barrel and hurl it. In Attack, his "Jet Clark" variant throws refrigerators.
 * Heterosexual Life Partners: With Ralf. They've been together for years in several combat theaters.
 * Red Oni, Blue Oni: The blue to Ralf's red. He's less hot blooded and more stoic.
 * The Stoic: Even when suplexing enemy soldiers, he's not exactly a Screaming Warrior.
 * Stone Wall: As Jet Clark, his ability to throw refrigerators to use as blockades make him very hard to wear down.
 * Weapon of Choice: The Iron Lizard.
 * Wrestler in All of Us: His Backbreaker.

Leona Heidern
Leona was adopted by Commander Heidern following her involuntary transformation and slaughter of her hometown, and Clark and Ralf helped to oversee her training.

Leona joins the team for XX, but has to be unlocked via DLC (she's only 99 cents, well worth it). She carries an almagation of everyone else's skills. (Stronger pistol fire, 20% more ammo and grenades, Slugs can take an extra hit, and she retains her weapons after losing a life. Interestingly, her special melee, Moon Slasher, can destroy bullets.) According to her profile, Clark, Fio and Leona finished a mission that also further bonded the three as being good friends.

Leona Heidern's tropes

 * Badass Abnormal

Donald Morden
Morden was formerly a Vice Admiral in the Regular Army Marine Corps. Though a tough and efficient commander, he was also something of A Father to His Men, which greatly earned him their respect.

Things went well for Morden, up until the Central Park bombing, which not only took away his right eye (hence the eyepatch he wears), but it also killed his young son. To twist the knife even further, he later found out that Regular Army Intelligence knew about the bomb threat and pushed for the high command to stop it, but due to rampant corruption in the system at the time, the higher-ups dismissed the threat as being a mere prank or so (later blaming the bombing on a lack of intel), which, when combined with his emotional instability and rampant alcoholism following afterwards, ended in Morden's resignation.

Morden's Tropes

 * Butt Monkey: Appearing on screen is usually a sign that he'll suffer a Humiliation Conga.
 * Eyepatch of Power: The man certainly looks imposing thanks to his eyepatch.
 * Made of Plasticine: Applies to his troops.

Allen O'Neal
Morden's right hand man and bodyguard. When Morden resigned from the Regular Army, Allen, alongside all of Morden's supporters, followed him out. He's most remembered for taking insane amounts of punishment and supposedly being killed each game (he's eaten by an Orca in Metal Slug 2), only to return later. In Metal Slug 3, he not only died, but came back in the same level. Aside from being nigh unkillable, he also has a wife and son to return home to at the end of the day.

Allen O'Neal tropes

 * Annoying Laugh/Evil Laugh: When he's not taunting the player, he usually can be heard going "AHAHAHAHAHA! AHAHAHAHAHA!".
 * Boss Banter:
 * "C'MON, BOY!"
 * "YOU'RE MINCEMEAT!"
 * Engrish: "GO HOME TO MOMMY!"
 * Implacable Man: He cannot be stopped. Just shooting him alone is barely going to phase him.
 * Large Ham
 * See You in Hell: His death cry.
 * Shows Damage: His skin turns red as he takes more damage.

Mars People
Aliens from Mars, if that wasn't obvious enough (though they do resemble squids, according to some). Possessing spaceships straight out of a 50's B-movie, they allied themselves with Morden, but were really using him to weaken Earth's defenses so they could take over with little to no opposition. Though defeated at the end of 2/X, they kidnapped Morden before the events of 3, sending a Mars Person to impersonate him, and eventually capturing one of the player's characters and creating clones of him/her.

Mars People Tropes

 * Everything's Squishier with Cephalopods: Resemble giant squid or octopi.

Rootmars
The leader of the Mars People, he was the one who orchestrated the events of 2/X and 3. Though originally looking like a larger Mars Person (just wearing a see-through helmet), his real form was revealed after his spaceship was destroyed (and he looked an awful lot like E.T.) He was defeated at the end of 3, his brain being blown out, and sank into the ocean, presumedly dead...

...But he wasn't. At the beginning of Metal Slug 6, Morden and the Mars People were looking for his body, and just as they located it, the Venusians came in. It turns out that while he was on the ocean floor, Rootmars had apparently recovered from his freefall beating at the hands of the team, and learned his lesson as well. During Stage 4, if you take the alternate route, Rootmars will swoop down and grab your player, taking him or her to the next destination whilst also being outfitted with two gatling guns, helping take down the Venusians. Taking this route also means Rootmars saves you at the end of the game.

Rootmars' tropes

 * Large and In Charge: The normal Mars People are human-sized, he takes up most of the screen you fight him on.
 * Psychic Powers: Fitting for an alien with a giant brain, it has psychic powers.
 * Super Intelligence: Part of the reason he's the leader of the Mars People.

Amadeus Syndicate
A mysterious organization whose threat to the world was the release of the "White Baby Virus", a supervirus powerful enough to penetrate any mainframe's defenses. It also appeared as though Morden was supporting their efforts, though they had made a robotics plant at their base, creating several Morden bots, possibly including the one seen in the opening sequence.

Ptolemaic Army
This army group attacked a Regular Army base and ended up stealing a disc containing blueprint data on both Metal Slugs and Rebellion Tech, which lead to them creating their own bastardized and upgraded versions. Due to the confusing nature of the game (and the fact that so much went unused), it was hard to tell who was really in charge. It appeared as though they had gained the trust of the natives by the Corridor of Fire, and was using them to keep intruders away.

Venusians
Obviously, aliens from Venus. The Mars People's nemesis, they not only appear to be physically stronger and more diverse than the Mars People, they also seemed to have better technology on their side as well. They formed the second half of Metal Slug 6's plot, especially after their first appearance was snatching up two martians and eating them.

Their queen came to Earth via an asteroid, and was quick to set up an underground shelter for her brood. After one hell of a fight against the team, she fell to her death, releasing an explosion that apparently killed the protagonists as well. Depending on which route you took in Stage 4, either Morden or Rootmars will save the player.

Venusians Tropes

 * Horde of Alien Locusts
 * Zerg Rush

Allen Junior
That's right, Allen's own son is here. He posed as a training instructor, which allowed him access to the island where the Peregrine Falcon trainees were undergoing the test. From here, he was able to lead some of Morden's forces to launch a surprise attack on the trainees, capturing the most of them and allowing Morden's troops to set up a base.

Unlike his father, though, Junior tends to act more strategically in direct confrontation against the player. However, once injured past a certain point, he eventually loses his temper and starts acting more like his father in battle. However, finding and defeating him is easier said than done.

Rumi Aikawa
Rumi originally joined the Regular Army to make use of their medicinal facilities to help her ailing mother, who had a weak heart, and her twin sister Madoka, who was physically ill. Due to a paperwork SNAFU, she was shipped to the front lines, and despite having never completed her training, she made it back unscathed, a miracle in and of itself.

Hyakutaro Ichimonji
A Second Lieutenant of the Regular Army, he's a living legend among the soldiers. Pretending to be a captured POW, once he's "rescued" by the player, he helps out by firing homing Hadokens at the enemies and spin-kicking anyone else who gets too close. He will flee if you die though.

Hyakutaro Ichimonji tropes

 * Ki Attacks

Metal Slug Defense / Attack
Characters that have been introduced in the mobile games Metal Slug Defense and Metal Slug Attack, broken down by faction.

MS-Alice
An A.I. made sentient due to a programming error from Marco. Alice controls and inhabits an SV-001 and is able to produce a mass hologram of herself.


 * Action Duo: Eventually became one with Marco in the form of Equippable Ally, who's able to utilise Alice's full potential.
 * Become a Real Boy: During the Halloween Another Story, she chose to work with Aswang for the possibility of gaining a flesh-and-blood body, for the purpose of being able to interact with her creator on a physical plane.
 * Cute Monster Girl: Her "Halloween Alice" variant. Operating a new timed firing program changes her appearance into a more fanservice-y, midriff-bearing Horny Devil. Said to be a prank by the creator of said firing program.
 * Determinator: Her Ghost version has her SV-001 nearly destroyed and stripped of weapons, but she still fights on, directing other (empty) Slug units to make kamikaze attacks on the enemy.
 * Marilyn Maneuver: When using a special attack, she and her slug will jump into the air. As she descends, she holds her skirt down with her hand to prevent it from flying up.
 * Military Salute: When her slug is destroyed, she'll make a tearful salute before her hologram fades away.
 * Undying Loyalty: Towards her creator Marco. Even as far as to hurl herself at an attack that was meant to kill him.
 * Victory Pose: Shares the same one as Marco.

Midori Schumann
A girl who is the engineer of the Regular Army, also part of the Sparrows division.


 * All There in the Manual: Her last name is revealed in her concept art.
 * Death From Above: Her special attacks involve her calling her Tetsujin slugs down from the sky to rain bombs and missiles on the enemy.
 * Bare Your Midriff: A standard for the Regular Army.
 * Child Soldiers: Her age isn't given, but she's certainly young enough that both Marco and Eri are very uncomfortable with actually sending her into a battle, even though circumstances necessitated it.
 * Conveniently an Orphan: Her parents died from a war. Her and Special Eri (also an orphan) both make the "Not Alone" team.


 * Rose-Haired Girl: Takes the battlefield in a far less serious matter than any other soldier.


 * Screw This, I'm Outta Here!: Unlike most of the other characters, Midori isn't killed when her health is depleted; instead, one of her Tetsujin-kun slugs shows up to carry her to safety.

Rita Lewinsky
A female PF squad recruit who joined the Regular Army around same time as Roberto Nicola.


 * Berserk Button: Hates to be referred as a country girl, given as she lived there without public utilities for 18 years.
 * Cute Bruiser: Gives off this vibe as well as Adorkable tendencies.
 * Dodge the Bullet: Roberto says she's able to dodge bullets during training. Becomes Gameplay and Story Integration where Rita actually has a skill that allows her to dodge projectiles from enemy units.
 * The Fashionista: Unlike her fellow teammates who wear standard military attire, she dresses in latest girly fashion trends, with a US-themed tank top and denim short-shorts.
 * Kick Chick: Rita is apparently useless with a firearm but she excels in her physical training. According to Tyra, she could destroy a tank's cannon just by kicking, and that's before she was given special leg armor made by Midori. Not to mention she only uses her left leg in combat.
 * Remember the New Girl?: She joined the Regular Army around the same time as Roberto, even though Roberto's debut dates back to Metal Slug Mobile 4 in 2008.
 * Took a Level in Badass: Before joining the Peregrine Falcons, Rita was from a rural area of Japan.

Amber
A female lone wolf pilot who drives a modified Slug Gunner. Joined the Regular Army at Marco's request.


 * Absolute Cleavage: Although not as low as Veronica's, the zipper ends just below her breasts.
 * No Sell: Her Gunner cannot be damaged while in tank mode.


 * Regenerating Health: Recovers part of her health every five seconds.
 * Screw This, I'm Outta Here!: When her slug is critically damaged, it flashes orange, and Amber will jump out and run away before the slug explodes. However, if the slug is destroyed with a critical hit, Amber will be unable to open the hatch and will be killed as her slug explodes.
 * In her special version, Amber will be unable to escape no matter how her slug is destroyed and will always die in the explosion if she is defeated.
 * Sugar and Ice Personality: According to Roberto, her cold personality is due to her not being accustomed to making conversations. She gets friendly once they get to know her.
 * Transforming Mecha: Her Slug Gunner opens up and starts attacking when near enemies.

Perche
A female pilot of a prototype Powered Armor developed by the Regular Army's top secret weapon systems program known as the Metal Device Project.


 * Almighty Janitor: In a literal sense. At the beginning of her Extra Ops, she finds herself training and cleaning instead of being the hero she wanted to be.
 * Mundane Utility: She ends up using the armor to clean faster, to the amazement of onlookers.
 * BFG/Gatling Good: Wields a gatling gun. While she normally fire regular bullets, summoning a weapon pack allows her to upgrade to armor-piercing attacks.
 * Clothing Damage: When she is killed, parts of the armor will shatter and fall off her body as she falls to the ground. If she dies from a critical hit, her tank top underneath will be ripped, exposing her breasts.


 * Fiery Redhead: She's passionate and a determinator. When Marco approached her with her first mission, she can't help but jump on it.
 * For Great Justice: She was chosen from numerous candidates due to her passion for justice and becoming a hero.

Nikita
A female officer with strong leadership skills, takes command of a modified Di-Cokka tank with enhanced firepower.


 * Calling Your Attacks: Does this with a swing of her baton before firing. Her special attack even has a beat before she does this.
 * The Enemy Weapons Are Better: A Regular Army officer who commands a modified Di-Cokka tank that's usually a Rebel Army vehicle.
 * Expy: Her appearance and being in a tank may give the impression of Anchovy from Girls und Panzer.
 * Just a Kid: Sort of a Berserk Button as she dislikes being treated as such. Practically her motivation to rise up the ranks so she can treated seriously.
 * Law of Inverse Recoil: Nikita is often rocked back and forth every time her tank fires a shot.
 * Non-Idle Rich: It's noted that she comes from a famous family and has many connections but refuses to rely on them, preferring to put in the effort herself.
 * Panty Shot: During her victory animation, Nikita will do a quick flip out of her tank, and her skirt flaps up briefly to expose her white panties as she does so. Also seen when she is killed with a critical hit, as her body lands on the ground with her legs spread wide.
 * Screw This, I'm Outta Here!: When her tank is destroyed, she calls in a helicopter to save her before the tank explodes. However, if she was defeated by a critical hit, the tank will instead explode almost immediately, killing her and hurling her body to the ground.
 * Small Girl, Big Gun: Downplayed. Her stature is small but her Di-Cokka tank is the size of a Metal Slug, that is equipped with a Wave Motion Gun.
 * Wave Motion Gun: Her Solenoid Cannon special attack, that can be described as a smaller and faster version of Tani Oh's Andro Cannon.

Mello

A female soldier from the future who aids the Regular Army after accidentally landing in their base.


 * Frickin' Laser Beams: Her special attack fires a sustained laser beam from her gun (though it's labelled in the game as an electromagnetic beam).
 * The Rival: To Nova.
 * Stripperific: In her victory animation, she warps her battle armor off her body, leaving her in her blue underwear.

Reika Bradford
A member of the famed and talented Bradford family. She attacks with various weapons stored inside her kimono.


 * Clothing Damage: Attacks which deplete her health will rip her clothes, exposing her white bra and the side of her panties, just before her suicide charge attack.
 * Panty Shot: Reika's second attack has her somersault backward while tossing out a bomb, briefly flipping her skirt up to expose her white panties. Also visible as she is doing her suicide charge.
 * Parasol of Prettiness: With a shotgun acting as the handle. It also works as a shield.
 * The Rival: To Fio, due to Reika's family often being compared to hers.
 * Short-Range Shotgun: Unless she uses her special, in which the damage given travels way farther than the animation shows.
 * Taking You with Me: When defeated, Reika will take out a lighted stick of dynamite and charge at the closest enemy. On contact, the bomb explodes, killing her and dealing moderate damage to surrounding enemies.
 * Trench Coat Warfare: Carries a landmine, a bomb, a Gatling gun and a bazooka. She attacks in the respective order.

Ami
The second volunteer of the Metal Device Project. Instead of a conventional weapon, she wields a lightning gun.


 * Bash Brothers: With Perche. Ami's alternate victory animation and purchasable avatar suggests a more romantic interest to Perche.
 * Big Eater: Downplayed. Her description has her concerned about the increase in appetite after she donned the suit.
 * Frickin' Laser Beams: Uses variations of the Thunder Shot.
 * Red Oni, Blue Oni: The blue to Perche's red.
 * Shock and Awe: Attacks with bolts of lightning fired from her lightning gun. Her special is an even larger, red lightning blast.
 * Works against her when she is defeated, as her suit will malfunction and electrocute her.
 * Shy Blue-Haired Girl: Possibly black haired. Perche tends to motivate her into acts of bravery

M.D.P.S.-Mz 3 / Menzel
A female volunteer of the Metal Device Project after losing her arm and a friend in battle. Has a bionic arm which can transform into a gun.


 * Arm Cannon: Her lost arm is replaced by an artificial one armed with bullets and a laser gun.
 * Only Known by Their Nickname: Subverted as people call by her actual name.

Louise

A female scout of the Regular Army, searching for her lover Bersek.


 * Death From Above: Her special is calling a group of Slug Flyers to perform an air strike on the enemy.
 * I Will Find You: The closest she gets on finding Bersek is a destroyed ship; she immediately knows that he would cause that type of damage. Reika stops Louise from going further due to signs of the Invaders' presence.
 * Smoke Out: When an enemy gets near her, she tosses a smoke bomb before running away a few yards.

Avvio

A male SPARROWS recruit who also happens to be somewhat of a womanizer. Fights with dual pistols and a grappling hook.


 * The Casanova: He loves girls equally no matter the race, as long as they're cute.
 * Dodge the Bullet: Has a skill that allows him to evade nearly any ranged incoming attack with his grappling hook. If the skill is maxed, he will fire a barrage of bullets while doing so.
 * Dual-Wielding: Wields two pistols that fire thunder energy bullets.
 * Gorgeous George: He often takes his time to look at himself in the mirror before going on a mission.

Maggie

A female civilian who enlisted in the Metal Device Project. Operates the Slug Rising machine.


 * Wrench Wench: Is capable of repairing machinery. Her concept art shows her with several mechanic's tools in her jacket.
 * Shock and Awe: When upgraded, her attacks are infused with electricity and can stun enemies.
 * Signed Up for the Dental: Joined the Metal Device Project so she can take care of Molly. Molly was surprised how quickly she was able to enter a confidential part of the army.
 * Team Mom: Towards Molly and Amber although all three are of similar age.
 * Trademark Favorite Food: Lotus root with minced meat.

Abigail
A female officer of the Rebel Army, and one of your first obtained super rare units. Attacks with floating drones that fire laser beams.


 * Attack Drone: Accompanied by four floating cubes that fire Frickin' Laser Beams.
 * Cool Big Sis: To Beatriz.
 * Easter Egg: Winning a battle with Trevor showing up on either the player or opponent's deck will cause her to furiously blush while a thought bubble of Trevor appears above her.
 * Evil Laugh: Part of her special attack and victory pose, although it comes out silent. It is heard when using the Spacey Nokana's special attack.
 * Foolish Sibling, Responsible Sibling: Abigail is the more responsible of the sisters.
 * Frickin' Laser Beams: Her weapon of choice present in her attack drones and her personalized Nokana.
 * I Call It "Vera": Spacey Nokana, with the first part named after Abigail's crush.
 * Panty Shot: When killed, Abigail will fall backward and land face-down with her buttocks in the air, her short skirt hiking up to expose her blue panties.
 * More obvious if she is killed by a critical hit, as her body will fall onto her side with her panty-clad buttocks facing the screen.
 * You Gotta Have Pink Hair: Long and way past her shoulders.
 * Walking Swimsuit Scene: Her "Everlasting Summer" variant. She's dressed in a bikini in order to teach her sister how to swim. Her description implies that she hopes Trevor will come to the beach and see her (he does, but for work related reasons).

Beatriz
A female officer of the Rebel Army and Abigail's sister. Idolized by the rebel solders, they serve as bodyguards for her.


 * An Ice Person: Her main ability is freezing her opponents with her weapons.
 * Big Sister Worship: Puts her sister Abigail in high regard. Turns into a bit of a Clingy Jealous Girl when Abigail's Villainous Crush Trevor is either present or brought up.
 * Bitch in Sheep's Clothing: Despite her appearance, she can be ruthless to anyone except for her sister Abigail. Her close range attack consists of freezing one of her bodyguards and using them as a shield.
 * Disproportionate Retribution: In one of her victory poses (chosen at random), Beatriz will toss a bomb on her servant if he gives her a carrot.
 * Foolish Sibling, Responsible Sibling: As revealed in Guardians of Morden, Beatriz is the more foolish of the sisters. This got escalated in Pain of My Heart, when she puts the blame on one of her soldiers and decides to call it an accident instead of taking responsibility for the Frozen Naglfar's destruction.
 * Frickin' Laser Beams: Ice beams from her Freeze Ray.
 * Kill It with Ice: Her ice gun is able to transform defeated living and non-living units into snowmen and ice blocks respectively.
 * Mook Maker: A new variant has her rushing out to fight without any weapons. So instead she pulls out Bodyguard-class soldiers out of nowhere.
 * Panty Shot: Similar to Abigail, Beatriz falls backward and lands with her buttocks in the air when she is killed, and her dress will slide down her back and expose her pink panties. She wears white panties in her special version, yellow in her summer version, and blue in her Halloween version.
 * Killing Beatriz with a critical hit causes her body to sprawl backward with her legs spread apart wide, exposing her panty-clad crotch.
 * Pure Is Not Good: Her deep love for her sister Abigail apparently deems her heart pure, according to the Pharaoh. She is still part of the evil Rebel Army.
 * Tank Goodness: Later owns her own personalised Iron Nokana like her sister, dubbed "Sister Nokana" which has its underbelly cannon modified to be a freeze ray.
 * Zettai Ryouiki: Rank A. She wears pink socks in her normal form and white socks for her special form.

Vita
A female soldier of the Rebel Army. Apparently suffered harsh casualties and had to be turned into a cyborg to save her life.


 * Artificial Limbs: She later loses most of her limbs some time in the future.
 * Breast Expansion: According to her concept art, she's been given a bust increase when she became a cyborg.
 * Custom Uniform: Wears a frilly dress rather than a standard Rebel uniform.
 * Cyborg: Complete with a robotic voice. Vita's head is the only organic part of her new body.
 * Frickin' Laser Beams:
 * Coming out of her right eye and landing in front of her. Unlocking her fourth skill will drag the laser up to the air.
 * Her special form's long-range attack is a spread of laser beams, while her special is a large explosion in front of her.
 * Immortality Begins At Twenty: While it is never specified what year the Future Rebels live in, Vita never aged ever since she's been stuck in the tube.
 * Made of Explodium: Her death animation has her malfunctioning for a moment before she explodes, dealing some damage to opposing units in the explosion's vicinity.
 * Multicolored Hair: Originally all pink, but her left side lost its color to a burnt blonde.
 * Panty Shot: When she takes off and lands, her skirt is blown upward by wind, exposing her dark red panties.
 * People Jars: Seen in Nova's winning animation.
 * Shell-Shocked Veteran: Due to her friends being killed in a war.

Destrade

A mercenary who now works for the Rebel Army, scouted by Allen O'Neil. Wields a giant robotic arm in one hand and a pistol in the other.


 * Amazonian Beauty: She has a very feminine face despite her incredibly muscular body, and fights in an outfit that's basically a bikini with some armor.
 * Mama Bear: Is like this in the Extra Ops story "No Limit", where she respects and cares for the devil sergeant Allen O'Neil. But will show no mercy for those that harm him.
 * Power Fist: Her massive robot fist-like weapon. Capable of punching missiles so hard they actually ignite and launch at the enemy.
 * In her special version, her robot fist comes equipped with a flamethrower.
 * Rocket Punch: Quite literally as her special attack.
 * Stripperific: Compared much to Dragunov in a sense, Destrade is literally this with just a bikini, but with metal shoulder pads and knee high boots.

Navy
A researcher who earned a spot at the top of the Rebel Army's Science division after she helped rebuild Vita.


 * Anime Hair: Very spiky and two-toned (pink and green).
 * Attack Drone: The little rotor-equipped things hovering around her are actually ammunition for her gun.
 * Combat Medic: Heals her teammates with the pink vial while poisoning her opponents with the green one.
 * Hoist by Her Own Petard: When defeated, she will choke on her own poison and crumple to the ground, dead. If killed by a critical hit, her body will dissolve into a green substance.
 * Master Poisoner: Her green vial explodes in a poisonous gas.
 * Teeth-Clenched Teamwork: Navy did not have a great relationship with the Professor when the latter was still part of the Rebel Army.

Nova
A female Future Rebel who is a robotic clone of Vita.


 * Artificial Human: A clone of Vita. Nova's appearance is based on Vita before her injuries.


 * Frickin' Laser Beams: Her special is a short beam coming out of her eyes with an explosive effect afterwards.
 * I Hate Past Me: Originally had a vendetta for Vita due to Nova having a militaristic mindset. Nova later softens up once she realizes that Vita separated her memories from combat from fears of not seeing her friends again.
 * It Was a Gift: A war jacket with Rebel decals was made specifically for her.
 * Made of Explodium: Like Vita, Nova will explode when she is defeated.
 * Roundhouse Kick: Her long range attack. It can be applied to her special attack once her proper skill is unlocked.
 * Thong of Shielding: She doesn't wear any pants in her Christmas outfit for some reason, and her black underwear doesn't cover much of her buttocks.

Rapid

A female Rebel supply officer who ensures the supply trains run on time.


 * Evil Counterpart: For a given value of 'Evil'. She doesn't seem too bad herself, but she does fight for the Rebel Army. She's the counterpart for Sisilia and the Aikawa Sisters, but her unit is far more offensive in nature.
 * She's Got Legs: Her short-shorts reveal quite a lot of her thighs.
 * Taking You with Me: If her fourth skill has been upgraded, upon reaching 0 health, Rapid will order her damaged train to charge forward and explode on contact with the enemy, though she herself runs away rather than dying in the explosion.
 * Weaponized Car: Straps a cannon to the top of her subway car.

Shizuka
A hired female ninja and personal bodyguard for Abul Abbas. Has a thing for sweets and had connections with Yoshino in the past.


 * Bodyguard Babes: Abul's personal female ninja bodyguard.
 * Bodyguarding a Badass: It's debatable how badass Abul is, though his Special variant (which she is paired with) is definitely no slouch.
 * Clothing Damage: If Shizuka is killed with a critical hit, her kimono dress will be torn apart, exposing her breasts and black panties as her body falls to the ground.
 * Hair Decorations: A large flower on her head.
 * Panty Shot: Seen when she lands from a jump, or when she is killed by a critical hit as her kimono is torn open.
 * The Rival: To Yoshino, both once trained in the same village they lived in.
 * Sweet Tooth: Her in-game description states that she takes her smartphone out and looks up new sweets online. True to the description, it is shown in her victory animation, with a cupcake in a thought bubble.

Julia
A female Rebel Army officer who is often deployed with Allen Junior, and appears to have a romantic relationship with him.


 * Badass Driver: Rides her own MV-280 Jeep into battle, armed with a machine gun identical to Allen's and lots of grenades.
 * Clothing Damage: Her tank top will be torn off if she is killed by a critical hit, exposing her breasts as her body falls.
 * Grenade Spam: Her special is this while she shouts a few big "YES!"es.
 * Ship Tease: With Allen Jr. She's often deployed with him, they're paired as a team in-game, and she utilises a machine gun that's identical to his (and his father's). Though its exact nature is unknown, there are many rumors about their relationship.
 * A Recent Extra Ops has her directly addressing Allen Sr. as her "future Father-In-Law".
 * Stripperiffic: Her attire merely consists of a tank top (if you call that a tank top) and very short shorts.

Chloe
A Rebel Army transportation officer. She pilots a huge ship called the Nafalgar, which is armed with missiles and a laser cannon into battle.


 * Frickin' Laser Beams: A large one under the cockpit.
 * The Knights Who Say "Squee!": Has a large amount of respect for Rapid and hopes they can be friends one day.
 * Oh Crap: When her aircraft is critically damaged, Chloe will start visibly panicking in the cockpit as the ship begins to crash. The ship explodes when it hits the ground, killing Chloe and doing some damage to surrounding enemies.
 * Averted if she is defeated with a critical hit; the cockpit will explode just before the ship starts to descend, and Chloe will be killed instantly.
 * Out of Focus: Currently, the only unit who lacks any presence and mention in the Extra Ops and Another Story until she finally showed up in "Christmas Wishes" Extra Ops.
 * You Gotta Have Purple Hair: Her hair is purple.

Grazia
Leader of the Blaze Brigade. Excels in handling fire.


 * Badass Cape: Worthy for a leader.
 * Bare Your Midriff: A standard for the Blaze Brigade.
 * Fiery Redhead: She has red hair, is very boastful, and goes nuts with her flames.
 * Fire-Breathing Weapon: Her main style of fighting found in her flamethrower and the Flame Dragon Cannon.
 * Foil: To Beatriz, in terms of their weaponry.
 * Heroic BSOD: Grazia stands in shock after Romy effectively destroyed the Ptolemaic Gigant within the allotted time frame. Loretta tells Norah to bring her in her room and give constant praise for five minutes.
 * Instant Awesome, Just Add Dragons: The Flame Dragon Cannon is able to shoot fire in the shape of dragons.
 * Noblewoman's Laugh: One of her victory animations.
 * Panty Shot: When she is killed, her pants will become undone as her body tumbles backward, sliding down her buttocks to expose her yellow panties.
 * The Rival: To Beatriz. Abigail is in amicable terms and also helped fund the Blaze Brigade.
 * Teeth-Clenched Teamwork: Grazia and Beatriz do not like to admit their cooperation skills.

Loretta
A female officer who acts as the second-in-command of the Blaze Brigade after Grazia.


 * Bare Your Midriff: While Grazia wears pants, Loretta wears a skirt.
 * Fire-Breathing Weapon: She also has her own cannon, and unlike Grazia's, Loretta's is a tank which she rides.
 * Kill It with Fire: She likes to spread flames all over the place.
 * Number Two: Loretta's skill level is similar to Grazia's and even helped the brigade out of trouble at times.
 * Panty Shot: When killed, Loretta's body falls to the ground with her buttocks facing the screen, exposing her white panties.

Naomi

A former female Regular Army officer who, like Morden and Allen, turned to the Rebel Army. She is an officer of the Aviation Corps.


 * Drill Sergeant Nasty: She trains her soldiers very harshly and is a very strict instructor to boot.
 * Enemy Summoner: Calls Flying Taras to drop bombs.
 * Improvised Training: Forces her recruits to fight the Invaders. Edda is surprised she could do such a thing when the base is in danger. Fortunately, everyone in base survives.
 * Panty Shot: Seen when Naomi is killed, as her body will sprawl backward and land with her legs spread apart wide and her crotch facing the screen, her green panties visible.
 * Tank Goodness: Calls in a Hermit Tank lifted on mini-blimps. It provides cover while constantly firing

Growth and Cline

A pair of female mercenaries hired by the Rebel Army.


 * Big Guy, Little Guy: Growth and Cline respectively - while Growth is a tall, muscular woman, Cline is a petite and agile girl.
 * Ear Notch: Cline has one of her ears cut, although this only present in her concept art.
 * Improbable Weapon User: In their special attack, Growth will appear carrying a Bull-chan tank, which she hurls for Cline to slice apart, allowing the explosive parts of the tank to damage the enemy. If Cline gets stunned or is killed during this point, the tank simply drops on the ground.
 * Leotard of Power: Cline wears an asymmetrical suit where one leg is covered and the other is in a thighhigh stocking.
 * Nice Hat: Both are known by their red berets.
 * Screw This, I'm Outta Here!: Cline drops to the ground in shock when defeated, and Growth comes in to lift her out of there.
 * The Silent Bob: Cline can understand what Growth is saying despite the latter being The Stoic.
 * Villainous Crush: Cline to Damian for his mysteriousness, and Growth to Owen for his alluring tolerance. The two Ptolemaic men are unaware of this, but Owen felt a presence lurking at him.

Conny

A female orphan who was raised by the Rebel Army. Part of Allen's platoon, and greatly looks up to him.


 * Abusive Parents: Her mother pretty much left her to die without remorse.
 * Heroic BSoD: Relieves her bad memories in a nightmare. Destrade tells Huracan to not wake her up as Conny has to face her fears alone.
 * Running Gag: Often has something explode and knock her unconscious.
 * Sphere Factor: Calls in a large, iron ball to roll onto her enemies and act as a projectile blocker.

Dragunov
A female commander, and physical training instructor of the Ptolemaic Army.


 * Authority Equals Asskicking: Is a strict military commander of the Ptolemaic Army and wields a large-caliber sniper rifle that deals heavy damage to enemies.
 * BFG: Wields an anti-material rifle.
 * Clothing Damage: If killed with a critical hit, Dragunov's bikini top will be torn off, exposing her breasts as her body falls to the ground.
 * Death From Above: Her original unit snipes from atop a hover unit. Lowering her HP will lead to Dragunov dropping her vehicle onto the opposing army.
 * Doppelganger Attack: Her "Special Dragunov" form/unit. Only equipped with a combat knife, her long range attack involves sending shadow clones at her enemies, slicing them with said knife.
 * Expy: Given the choice of clothes (bikini top and low-hanging pants), gun (she's using the NTW-20 as shown in her concept art), her hair, and how curvy she is, as well as her choice of colored hover unit, she can be seen as an expy of Tengen Toppa Gurren Lagann's Yoko Littner.
 * Eye Scream: Has a scar on her left eye that seems to be permanently shut.
 * Frickin' Laser Beams: Her hover unit's special attack.
 * Knife Nut: When not using her sniper rifle, she is this. Complete with Reverse Grip.
 * Stripperific: Wears a green bikini along with low-strung pants, low enough that her bikini briefs can be clearly seen.

Yoshino
A female Ptolemaic martial arts instructor who happens to wield a giant hammer.


 * Amazonian Beauty: Her character illustration shows off her muscles pretty well. And she needs them to swing that hammer.
 * Clothing Damage: Her bodysuit will be ripped when she is killed, exposing her breasts.
 * Counter Attack: Teleports to the front of the opposing army and slams her hammer.
 * Drop the Hammer: Her main weapon, its bigger than she is.
 * Gas Mask Mook: As part of belonging with the Ptolemaic Army's Special Forces section. If she gets knocked back, her mask flies off her face, making her mask-less for the duration of the battle.
 * Luckily, My Shield Will Protect Me: Her special attack finishes off with her hammer acting as a shield for a few moments, deflecting enemy damage from the team.
 * Made of Iron: In the second Ptolemaic Another Story, she takes on two Super-Heavy tanks (Shoe and Karn) while still suffering from the wounds she took fighting Red Goblin.
 * Sensual Spandex: Her standard outfit is a very form-fitting bodysuit.
 * Shockwave Stomp: The aftermath after slamming her hammer by her special attack.

Caroline
A female mechanic of the Ptolemaic Army. Caroline controls the F-502 ShootingRay, the plane boss from the second mission of Metal Slug 5. She later controls a miniature version of the Jupiter Queen. Later on, she pilots her own variant of the Augensterm, in red.


 * Attack Drone: Usually uses remote-controlled weapons.
 * Death From Above: The ShootingRay plane's standard attack.
 * Fun Size: The original ShootingRay was modelled after would not fit the screen at its wingspan in Metal Slug 5. Here, it's a similar length to the Hairbuster Riberts.
 * Gadgeteer Genius: Created the ShootingRay all of her own; Yoshino calls Caroline the "Mechageek".
 * Girly Girl with a Tomboy Streak: The most girly of the army, but she actively goes to the battlefield with her inventions.
 * Improvised Weapon: Whacks enemies with her controller as a close range attack.
 * Plucky Comic Relief: When not in battle, Caroline is the most expressive of the expanded cast, being the main host of various comedic moments.
 * Screw This, I'm Outta Here: If her controlled mech or robot is destroyed, Caroline will throw a tantrum and stomp back to base.
 * Averted if Caroline's (and not her controlled weapon's) health is depleted before her weapon; Caroline will be killed and her weapon will perform a kamikaze attack on the closest enemy.
 * Taking You with Me: Unlocking her fourth skill allows the plane to do a suicide attack whenever it is destroyed, or Caroline dies.
 * Tank-Top Tomboy
 * Wrench Wench: Loves machinery. When she sees Big Shiee for the first time, she wants it for herself. Her own story has her going AWOL (technically, she left a Leave request, but never actually turned it in) to get at a Crablops.

Veronica

A female member of the Ptolemaic Special Forces who rides a weapon-laden motorbike.


 * Absolute Cleavage: Her bodysuit is unzipped all the way down, complete with Vapor Wear.
 * Boyish Short Hair: Green colored.
 * Biker Babe: Her bike is her form of travel and weaponry. She tinkers with it during her spare time.
 * Captain Ersatz: Wears a tight leather cat-ish riding suit (her Christmas variant even has cat ears), and the design of that bike looks awfully familiar...
 * Clothing Damage: When Veronica is killed, her bodysuit will be torn and slide down her chest as her body falls to the ground, exposing her breasts.
 * Distaff Counterpart: To Tarma, in terms of their affinity to motorbikes.
 * Feud Episode: So far, twice with Dragunov over who would be the pilot of a recently upgraded Union vehicle. Both times, Sisilia had to break up the two.
 * Gas Mask Mooks: Unlike Yoshino, she temporarily wears one whenever she throws her gas grenades.
 * Master Poisoner: Units caught by her gas grenades are poisoned and continuously take damage for a few seconds.
 * Oh Crap: When her bike is critically damaged, Veronica will panic and raise her hands in fear as it catches fire. The bike then explodes, killing her and hurling her body backwards.
 * Weaponized Car: Her motorbike has a gun and missile launcher at the front.

Sisilia

A female member of the Ptolemaic Army Supply Corps who always likes to play her trumpet to inspire her fellow soldiers.


 * Brown Note: Her close range attack is a loud blast from her trumpet.
 * Cool Bike: Downplayed. It's a standard bicycle compared to Veronica's motorbike.
 * Expy: A Ptolemaic version of Rumi.
 * Fanfare: Plays a silent one on her victory animation.
 * Heroic Second Wind: During "Sadistic Emotion" Extra Ops, she uses her trumpet to revitalise Veronica and Dragunov who not too long ago were defeated by Izabella and Navy, allowing them to rescue her and escape.
 * Say My Name: Shouts "Veronica!" upon being defeated.
 * Screw This, I'm Outta Here!: When she is defeated, she falls off her bike and runs away scared, making her one of the few characters who doesn't die when her health is depleted.
 * Averted in her Union 01 version, where she pilots the Union 01 tank - upon her defeat, the tank explodes, and Sisilia dies in the explosion.
 * Spell My Name with an "S"" Pronouncing her name sounds more like it should be spelled "Cecilia".
 * Stuff Blowing Up: Her long range attack is tossing grenades from her bag.
 * Support Party Member: Like the Aikawa sisters, this is her role in her respective army, using her trumpet to motivate her comrades to victory. Her special attack has her use her trumpet to produce pickups that either allows her allies to recharge their special attacks, buff them or in the case of her Special form, heal them.
 * The Last of These Is Not Like the Others: Her appearance is quite unfitting compared to the rest of the army, looking more like a Studio Ghibli heroine.

Towa

A female mechanic of the Ptolemaic Army. Originally independent, she was forced to join after being caught stealing the army's supplies.


 * Disproportionate Retribution: If Caroline didn't come in and intervene, Towa would've been executed by Dragunov for stealing the army's supplies.
 * Heterosexual Life-Partners: With Caroline. Dragunov and Yoshino are disgusted seeing the two being obnoxiously sweet to each other.
 * Join or Die: And she wouldn't even have had the choice had Caroline not stepped in.
 * Meganekko: Can rival Fio in both their character and glasses.
 * Regenerating Health: Gains HP every once in a while. More HP is gained if assist units are placed on the same deck as Towa.
 * Screw This, I'm Outta Here!: When defeated, her mech will flash orange, and she will jump out and run away before it explodes.
 * This Is a Drill: Her mech has two drill for hands. Her special attack is lunging an enlarged drill.

Simon

A female sniper scouted by Dragunov.


 * BFG: Her dark pink sniper rifle is longer than she is tall.
 * Gender-Blender Name: A male name on a female. Although in the Japanese version, her name is pronounced like the female name "Simone".
 * Ineffectual Loner: Tends to work alone since she hates noise. When her punishment for not following orders and pointing her gun at Dragunov is a trip to the solitary confinement room, Simon asks if it's quiet in there (and then hopes she gets in as soon as possible).
 * Laser-Guided Amnesia: Her memories were removed during secret tests by the Ptolemaic Army.
 * And I Must Scream: An Another Story suggests that her memories weren't removed, but possibly her entire personality supressed.
 * Leotard of Power: Her suit has cutouts on her inner thighs.

Chunyan

A daughter of a famous chef who was rescued from an assailant. She was invited to join the army, though not for her powers but her culinary skills.


 * Bare Your Midriff: Her Chinese-style outfit has a space between her top and her wraparound skirt, leaving her belly exposed.
 * Big Eater: Unlike Nadia, Chunyan is able to control her weight while enjoying her food.
 * Elemental Barrier: Her special involves her punching the ground, raising a spur of rocks a few yards from her. The protruding rocks serve as a standalone shield.
 * Panty Shot: When Chunyan is killed, her legs are thrown up in the air as her body falls backward, causing her skirt to slide up her thighs, exposing her white panties. She then dies with her skirt hiked up around her waist, her panties exposed.
 * Rose-Haired Sweetie: She doesn't mind fighting for the army as long as she can pursue her love of cooking.
 * Team Chef: The main reason they invited her. Dragunov in particular loses her stoicness after eating Chunyan's food.
 * Trademark Favorite Food: Meat buns.

Miharu

A wandering female mercenary who joined the Ptolemaic Army after Yoshino improved her combat skills as her student.


 * But for Me, It Was Tuesday: She does not ever recall training Matilda.
 * Clothing Damage: Her bikini top will be ripped when she is killed with a critical hit, and her body sprawls dead with her breasts exposed.
 * Defeat Equals Friendship: In the second Everlasting Summer story, she gets into a fight with Odette out of what seems to be sheer jealousy after her soldiers remark on her cuteness. After the battle, however, she starts acting downright motherly towards her, saying that had she chosen to settle down, she probably would've had a daughter about Odette's (apparent)age by now.
 * Kill It With Fire: Her special version's special attack has her spin her weapon around and release a sustained burst of blue flames at the enemy.
 * Jiggle Physics: Her idle animation.
 * Mix-and-Match Weapon: Her gun lance, made by the same craftsman who made Yoshino's huge hammer. Its a Blade on a Stick with a gun attachment that inflicts lots of damage but only at close range.
 * Ms. Fanservice: Big time. Her pants are as low as Dragunov's and has her chest in the open, showing off her voluptuous figure.
 * Spin to Deflect Stuff: She is able to completely nullify any ranged projectiles as she spins her lance as she walks. She can still take damage from explosive attacks however and she stops spinning her lance once she reaches an enemy at melee range.
 * Stripperific: Her Everlasting Summer variant, which is a "swimsuit" that seems way too sensual.
 * You Gotta Have Blue Hair: Long silver-blue hair tied in a ponytail.

Professor Aionion
A scientist who worked for the Rebel Army before affiliating with the Mars People. His latest incarnation is in a withered body called "Aionion".


 * Ambiguous Gender: Due to the Professor cloning so much, it becomes difficult to determine what gender the Professor is supposed to be.
 * Came Back Wrong: After being defeated by Abigail, he returned in the body of a living clone, though it is old and fragile. He hence develops a powerful organic weapon to protect it and fight with.
 * Deadly Disc: The Professor's attack fires laser saw-like rings that pierces through enemies in a certain area.
 * Everyone Calls Him "Barkeep": Simply referred to as the Professor. It is unknown whether Aionion is his real name or an alias of his.
 * Heel–Face Turn: Despite moving to another enemy faction, the Professor is insistent on destroying the Rebel Army and their weapons.
 * Idiot Hair: The largest cowlick in the series beating out Eri's.
 * Little Green Men: Probably used the same cloning properties as the player clones from Metal Slug 3, causing the skin to turn green. The Professor is also slightly shorter than the rest of the human units.
 * Meaningful Name: Aionion is Greek for "eternal", signifying his constant resurrections.
 * Non-Idle Rich: Made his finances from his research from the Rebel Army. He's rich enough to give Millefie money whenever she needed it.
 * Vague Age: Being from the future, it is unknown how long the Professor has lived throughout the various clones.

Percier
A girl who calls herself The Professor's "eternal assistant" when they were once working for the Rebel Army. She also dresses up as a Mars Person, hoping it will make him pay attention to her.


 * An Offer You Can't Refuse: She offers Harriot, a soldier of the Rebel Army, a chance to join the Martians in exchange for having three meals and a nap.
 * The Bore: A reason why the Professor doesn't take much interest in her.
 * Clingy Jealous Girl: Doesn't get along well with Marty when she finds out he is the Professor's new assistant.
 * Dressing as the Enemy: Dresses up as a Mars Person and speaks their language to combat the actual ones the Professor has an affinity for.
 * Early-Bird Cameo: Makes her first appearance in the "Mad Scientists" event before fleshing out her personality in Another Story.
 * Expressive Shirt: Her costume's eyes bulge out when she's attacking similar to the Mars People.
 * Remember the New Guy?: Unlike the other newcomers, she makes her debut in an event starring someone else (Navy in this case) before becoming a unit.
 * Panty Shot: When killed, Percier's body sprawls backward with her legs spread wide. exposing her white panties.
 * Self-Proclaimed Love Interest: "Eternal assistant to the Professor", as she puts it.
 * You Gotta Have Green Hair: Her hair's green.

Clone Abby
A robotic clone of Abigail created by the Professor. He designed her to combat Vita.


 * Bold Inflation: In the Japanese language, her name is kept in English. Her name is also in full caps in SNK's descriptions.
 * Evil Knockoff: While Abigail is already part of a supposedly evil army, Clone Abby strips off any sort of emotion the original has.
 * Frickin' Laser Beams: Fires laser beams out of her two guns.
 * Green-Skinned Space Babe: Her green skin is a standard for the Martian clones.
 * Leotard of Power: Unlike the human Abigail, who wears a skirt.
 * Made of Explodium: When defeated, Clone Abby's body will convulse with electricity arcing around her, before exploding.
 * You Gotta Have Blue Hair: Compared to Abigail's pink.

Clone Betty
A robotic clone of Beatriz created by the Professor.


 * An Ice Person: Has a rechargeable Freeze Ray floating behind her back, and she is able to breathe ice on the closest unit. She later gets a Martian Spider Tank that drops freezing bounce bombs.
 * Death from Above: Sends small satellites that drop large chunks of ice.
 * Green-Skinned Space Babe: A Martian standard.
 * Made of Explodium: Similar to Clone Abby, Clone Betty explodes when she is killed.
 * Out of Focus: From her Extra Ops, as it's mostly delegated to the Martian Rangers. Her contribution to the story is the Professor's discovery of White Baby.
 * Red Eyes, Take Warning: Big red eyes compared to Clone Abigail.
 * You Gotta Have Blue Hair: Compared to Beatriz's pink.

Odette
A female human Invader whose task is to investigate life-forms affected by the Sol Dae Rokker Anima's energy.


 * Combat Tentacles: She can transform her arms to tentacles to whip her enemies to death.
 * Girlish Pigtails
 * Head Pet: Her "Everlasting Summer" variant has a small bird on her head. Given their nature, it may be a part of her.
 * Horned Hairdo: Her pigtails will raise into horns when she does her attacks.
 * Human Aliens: Odette only transforms her arms in order to keep her true form secret.
 * Man on Fire: When her health is depleted, her body will catch fire and burn while she screams. After a few moments, she collapses and dies, and her body melts into purple goo.
 * Mellow Fellow: When not attacking, Odette is rather laid-back. She yawns when idle, hides her face when knocked back and just bobs left and right during a victory. It's likely this is the reason why Annette was forced to come to Earth to check on her.
 * Modesty Shorts: She wears black short-shorts beneath her skirt, which can be seen when she jumps during her special attack.
 * Red Eyes, Take Warning: Her eyes are red as well widen when she attacks.
 * Red Oni, Blue Oni: Blue to Annette's Red.
 * Winged Humanoid: Odette Ver.Innocence.

Annette
An inventress of the Invaders. Came to Earth after being annoyed by the status of Odette's investigation.


 * Annoying Younger Sibling: She finds Odette's laid-back behavior bothersome and often reminds her to do her job.
 * Combat Tentacles: Unlike Odette, Annette is able to transform her tentacles into claws or a heavy pile of goo. In her holiday suit, she extends the attack with a gooey Christmas tree.
 * Hot Blade: Her special variation superheats her tentacle attacks for more damage.
 * Impossibly-Low Neckline: Seen only in her concept art.
 * Letting Her Hair Down: Her Christmas Variant has her hair loose.
 * Ms. Fanservice: With probably the largest bust of the entire series and doesn't mind showing it off, she goes for a more refined style of dress, however.
 * Mama Bear: Do NOT mess will Odette. She will make you regret it.
 * Man on Fire: Similar to Odette, killing her will cause her body to catch fire, after which she collapses and melts into purple goo.
 * Out-of-Character Moment: She softens when communicating with Odette in secret. The reason Annette's arrogant is to avoid revealing to other Invaders that she and Odette are sisters.
 * Red Eyes, Take Warning: Her naturally red eyes widen as she attacks.
 * Red Oni, Blue Oni: Red to Odette's Blue.
 * This Is a Drill: Similar to Odette's special attack except it travels horizontally.

Nowan

An Invader with shape shifting powers.


 * Ambiguous Gender: Even Nowan doesn't know what gender she is. Everyone refers to Nowan as a "he", although in later updates the game calls Nowan a "she".
 * Bifauxnen: Later updates has Nowan referred to as a woman. Nowan's short hair and suit can be mistaken for a man.
 * Imposter Forgot One Detail: Her impressions require more work. Allen Jr. caught Nowan's bluff when the former said his father laughs with an extra "ha" in the end.
 * Not Quite Flight: Produces a set of wings to leap forward. Nowan also hovers during her winning animation.
 * Punny Name: Pronounced as "No One".
 * Teeth-Clenched Teamwork: Hates working with the Metzelei.
 * Shapeshifter Default Form: Her normal form is taken from a human she met long ago. This explains why her style looks different from her peers.
 * Shapeshifter Weapon: Nowan is able to turn her limbs into spears, deploy gliding membranes from her back, turn herself into other characters (Allen O'Neil, Jin, Lightning Fio, and Beatriz) with their weapons in hand, and can even turn into a fully functioning Sand Marine.
 * Voluntary Shapeshifting: Is able to perfectly transform into anything. Gotten to the point that Nowan can't remember how she looked like, how old she is, or if she had a different name.
 * Who Wears Short Shorts?: Nowan's "default" appearance.