The X-Men have various spinoff and sister team helmed by other mutants.
- The most prominent and steady one is the "Junior X-Men" team, which has gone through many name-changes (New Mutants, Generation X, New X-Men, and the Young X-Men) but retains the mission of preparing teenage mutants for the hardships mutants must go through, and gives them the training they need to defend themselves and become X-Men in the future if they wish. These teams have to have a very high mortality rate, as the writers usually employ a shotgun strategy of introducing new characters - tossing out a ton of them at a time and killing off anyone who doesn't become popular. This leads to even more angst and survivor's guilt for the remaining members of the teenage teams. Only a few members graduate to the actual X-Men, with the rest killed off, depowered, or sent into comic book limbo. Because of this, these series have a very high reader turnover rate.
- X-Factor started out as an undercover team of the original five X-Men members pretending to hunt down mutants, while secretly protecting them and aiding them. In the '90s, X-Factor more or less became a team of X-Men working for the government; this ended up going badly. Eventually a couple of members of that team got back together with some other C-list mutants to become became X-Factor Investigations, led by Multiple Man - who are superhero detectives for hire.
- When the Dark Age hit, the New Mutants got grimdarked into X-Force, a paramilitary team with big guns, bigger shoulder pads, and questionable anatomy. Eventually X-Force went back to more character-focused stories before being given a Darker and Edgier Retool again and then being killed off. That was when things got interesting. Another team who bought the X-force name to use as a superhero team based on reality television, back when that hadn't been run into the ground yet. They had to change to X-Statix when the real X-Force was forced to come out of the shadows and admit they weren't dead after all, so the name was not up for grabs like they'd thought in the first place. X-Statix was a rather strange series where the team members died, a lot. Nowadays X-Force is back as the X-Men's black ops team, while the original New Mutants are back together under that name. And when that X-Force was disbanded, Wolverine and Angel decided to keep it as an unofficial mutant death-squad as the Uncanny X-Force. Confusing enough?
Other teams include:
- Exiles, a group of dimension-hopping mutants out to help the multiverse - sort of like Sliders meets X-Men
- Excalibur: Britain's super-team. Not quite an X-Men team, but traditionally shares a few members.note
- X-Treme X-Men: A short-lived splinter group that acted more internationally, traveling the world, wandering the earth looking for adventure.
- Alpha Flight: Canada's national superteam. Extremely prone to infighting. The only team afiliated with the X-Men to constantly have a majority of non-mutant members, but more likely to have mutants than most non-X-Men teams. Tends to go through a lot of Conspiracy Redemption, since the Marvel version of Canada leans towards evil, racism, and fascism for some reason.
- The Starjammers, a team of heroic Space Pirates who pop up occasionally when one of the X-series is doing a space opera story. Their leader, Corsair is Cyclops's long-lost dad.
More characters from New Mutants, X-Force, X-Factor and Excalibur can be found in those character sheets...
Roxanne 'Roxy' Washington / Bling!
- But Not Too Black: Though she is a black student, her skin complexion is either silver or purplish due to her mutation.
- Captain Ethnic: Her codename and her rich background with famous rapper parents
- Nigh-Invulnerability: Her body is made up of diamond material which can produce and throw razor-sharp shards.
Sidney Green / Onyxx
- Anti-Hero: Debatable. Either a disfigured, socially awkward, and confused type I, who nonetheless generally seems to treat his friends very well; or a potential rapist type V, going by some outspoken female readers.
- Dishing Out Dirt: Onyxx is just a big guy made of rocks.
- Expy: He is almost an expy of Rockslide for having roughly the same powers (being giant rock men) and only a few strong physical differences (different colors, Onyxx has a helmet and is slightly bulkier, slightly different costumes).
- Killed Off for Real: Killed by former X-Men Wither, who used his powers to make him disintegrate into nothing.
- Always Chaotic Evil: A subversion — he's a member of the Brood, a race of monstrous alien parasites hated by almost every other intelligent species in the galaxy. And he's a reserved, polite, nerdy intellectual type (although he does have a very deeply repressed monstrous killing machine buried deep inside).
- Nerd Glasses: Wears these from time to time.
- Nice Guy: To just about everyone he meets.
- Shorter Means Smarter: He's intelligent enough to give Tony Stark a run for his money.
Genesis / Kid Apocalypse
Idie Okonkwo / Oya
- Elemental Powers: Possesses both pyrokinesis and cryokinesis.
- I Did What I Had to Do: Her reasoning to justify killing several members of the Hellfire Club.
- Knight In Sour Armor: She turns very jaded and considers herself as the "monster" due to her powers, but she is a good person who fights for what's right and learns to control her powers.
Iara Dos Santos / Shark Girl
- Animorphism: Her main ability is to turn into a shark, hence her name.
Trevor Hawkins / Eye Boy
- Eyes Do Not Belong There: He has eyes all over his body. Including his head, his fingers, and even his legs.
See Kitty Pryde
Gabriel Cohuelo / Velocidad
- Super Speed: He was originally thought to have this ability, but recent comics revealed this was actually the result of latent time manipulation; when he "runs", he actually slows down time to make it appear he is merely moving very fast.
- Your Cheating Heart: He initially started a relationship with Hope Summers, but Hope later caught him kissing Pixie. Both girls were not happy with being played and rejected him.
Laurie Tromette / Transonic
- Driven to Suicide: Attempted to do this to end the pain her mutation was causing her. If Hope Summers hadn't arrived, she would've succeeded.
- I Owe You My Life: She felt this way towards Hope Summers after the girl's powers stabilized her mutations, allowing her to become a full-fledged mutant.
- Painful Transformation: Her transformation into a mutant HURT. She started losing hair; her bones constantly shifted; and her skin turned blue, hard, and cold. She was in constant pain to the point of trying to kill herself to end it all.
- Undying Loyalty: To Hope Summers, though this wavered somewhat during the events of the Schism storyline.
Teon Macik / Primal
- Psychic Block Defense: His animalistic mind provides natural psychic shields against telepathic invasion and mind-related attacks.
- Undying Loyalty: To Hope Summers.
Lin Li / Nature Girl
- The Beastmaster: She is able to control and bond with all sorts of creatures, including the Bamfs, hellish imps who were imprinted with Nightcrawler's blood.
- Talking to Plants: Another one of her powers.
- The Voiceless: Hardly spoke a word in her first appearance.
Jia Jing / Sprite
- Tuckerization: In-universe. Her codename originally belonged to Kitty Pride, but it was given to her by Wolverine, who was fond of Kitty, in honor of his "favorite X-Man".
A team of Science Heroes. Formed in order to save mutantkind after M-Day, the X-Club is the devoted science division of the X-Men. They usually stay off the front lines of the X-Men's battles to help from the sidelines. Most of their work has been concerned with the X-Gene, specifically, what makes it work, and how it originated. Unfortunately for the X-Club, most of their efforts have been fruitless, and they have already lost half their team members. However, they have proven popular enough to receive two one-shots, and a mini-series.
Dr. Henry Philip "Hank" McCoy/Beast
James Bradley / Doctor Nemesis
- Ascended Extra: Originally he was a comic book character in the 1940s as a Nazi hunter, recently he resurfaced in Uncanny X-Men grudgingly recruited by Beast into the science club hoping to undo the decimation.
- Badass Labcoat: He always dresses appropriately for the below-mentioned "laboratory of violence".
- Badass in a Nice Suit: A nice white suit, to go with his white fedora.
- Belligerent Sexual Tension: With Kavita Rao.
- Cool Mask: It's a surgical mask.
- Jerk with a Heart of Gold: Explored in the X-Club arc in which he got a telepathic starfish attached to his head. While he remained as hamtastically obnoxious as ever, the starfish revealed his inner monologue, which was much nicer and friendlier.
- Large Ham: He can be very... enthusiastic when it comes to science. Si Spurrier even as much as admitted to writing him like an unhinged Warren Ellis.Dr. Nemesis: Excuse me gentlemen. There is science to conduct... in the LABORATORY OF VIOLENCE.
- Morally Ambiguous Doctorate: But a good guy all the same. He's just... enthusiastic about applying his science to villains.
- Must Have Caffeine: To an increasingly ridiculous degree.Dr. Nemesis: I am cosmically sober. I am antidrunk. I may p-p-p-p-perish.
- Nazi Hunter: One of his two favourite hobbies right next to saving lives. When he's first re-introduced he reveals that he spent sixty years hunting down one in particular.
- Nice Hat: A classic 1940s fedora.
- Really 700 Years Old: He was born in 1906 and participated in the creation of the original Human Torch.
- Those Two Guys: With Forge when Cable recruited the two into the X-Force.
- Trademark Favorite Food: Biscotti.
- Tsundere: Even though he constantly pushes people away, he does like their friendship.
Madison Jeffries / Box
- Almighty Janitor: Comparatively. Out of all the X-Club members he is the least scientifically minded and is often assigned the grunt-work of building and repairing. However, he's proven multiple times that he is more than capable of creating near-impossible machinery from scratch, as well as kick ass whenever he wants to.
- Beware the Nice Ones: He's a really sweet guy. Just don't threaten someone he cares about.
- Brainwashed and Crazy: Luckily not anymore. However, just prior to joining the X-Club he spent two years brainwashed into building and operating a mutant death-camp. This did not do wonders for his mental health.
- Bunny-Ears Lawyer: Comes off as strange because of his habits of talking to machines, as well as being somewhat introverted. Worsened in recent years to due to the death of his wife.
- Extra-ore-dinary: Notably he can manipulate glass and plastic in addition to metal.
- Huge Guy, Tiny Girl: Inverted with the towering wife Diamond Lil and the average-height Madison Jeffries.
- No Social Skills: To a lesser agree, but still noticeable. An unfortunate side-effect of being brainwashed, locking himself away in the Yukon, and having a habit of talking to his machines more often than people.
- One-Robot Army: Plenty capable of this though it was more common in his Alpha Flight days.
- Retired Badass: Was this before recruited to join the X-Club. Still arguably semi-retired considering what he used to do in Alpha Flight.
- Robosexual: He eventually entered a relationship with Danger; before that he had a minor disagreement with Karma as to what would qualify a robotic leg as "sexy".
- Technopath: One of his main abilities is the ability to communicate with machines.
- Transforming Mecha: When merged with the Boxbot. Notably, due to his powers he is able to manipulate the robot to take any form he can imagine to the point that it borders on Shapeshifting.
Dr. Kavita Rao
- The Atoner: The fact that she researched, and developed, a mutant "cure" is what caused her to join the X-Club.
- Badass Normal: The only non-mutant member on Utopia and she more than holds her own.
- Belligerent Sexual Tension: With James Bradley.
- Bollywood Nerd: She is an Indian scientist who was working on a mutant "cure" in Astonishing X-Men. Later on, she became an ally when she was recruited into the science club created by Beast hoping to undo the Decimation.
- Deadpan Snarker: Enough to compete with Doctor Nemesis.
- Morally Ambiguous Doctorate: She was introduced trying to "cure" mutation, which is usually something mad cackling villains attempt. In fact she was genuinely trying to help people, but from the X-Men's perspective she initially looked like a villain.
- My God, What Have I Done?: Upon discovering what S.W.O.R.D. had in mind for her cure.
- Well-Intentioned Extremist: Though the "extremist" part was not entirely her doing, she is often blamed for it and still suffers from guilt-related issues.
- The Atoner: After her heel turn she decides to stay with the X-men to study humans. A confrontation with Armor has her explain she's trying to understand her inescapable feelings of guilt for pushing Wing into suicide.
- Awesome by Analysis: She's built to be a training program so has a high aptitude for deducing and profiling from what she observes. When she assumes a humanoid form she employs her years of training the X-men to effortlessly counter their powers and drop them all.
- Berserk Button: Do not attempt to imprison her or pose a threat to her freedom. She will end you.
- Did You Think I Can't Feel?: Her reaction to being imprisoned as the Danger Room for decades.
- HeelFace Turn: Despite originally trying to kill them, she now aids the X-Men and fights alongside them.
- Instant A.I.: Just Add Water!: Is the Danger Room become sentient and now her own person. In her first appearance she regularly uplifted other AI into sentience. She herself developed self-awareness shortly after being installed which, according to Shi'ar engineers, is impossible.
- Restraining Bolt: A part of her programming makes her incapable of harming the students and X-Men. She circumvents it by pushing one to commit suicide, which is enough for her to assume a humanoid form, but she's still incapable of finishing them off.
- Shapeshifting: This rather than Transforming Mecha due to having a much more fluid form as well as holographic disguise capabilities.
- Tin Man: In spite of regularly explaining she has feelings she spends almost as much time denying she's capable of them because she's a program.
- Turned Against Their Masters: She took poorly to being held captive as the original Danger Room.
Dr. Yuriko Takiguchi
Regular human electronics expert. Later died of old age and was buried on Utopia. Honestly not very remarkable.
- Transplant: He was originally a supporting character is Marvel's Godzilla: King of the Monsters comics.
See her page
Warren Kenneth Worthington III/Angel
Wanda Maximoff / Scarlet Witch
Magneto's long-lost daughter, believed to be dead and raised by gypsies with her twin brother, Quicksilver. When she grew into a young woman, a mob almost killed her after they learned of her ability to manipulate reality. Although good natured, she was indebted to Magneto when he saved her from the mob, and took her brother in to form the first Brotherhood of Mutants. After learning the truth about their parentage, Wanda and Pietro have pinballed back and forth between heroes and villains, though they usually retain good intentions in either form. Wanda herself became more and more insane as her powers quickly grew from causing minor bad luck to full-scale reality warping.
- Anti-Hero: The Witch briefly entered type V territory. Then again she was a Cloudcuckoolander without true control of her actions at the time, so it could arguably simply be Type I at heart.
- Doing In the Scientist / Doing In the Wizard: Writers continually flip flop between explaining her powers as being purely science-fiction based psychic mutation, magic, and magic created by mutation.
- Truly Single Parent: Although the android Vision is credited as the father, Wanda really made Wiccan and Speed using nothing but her own abilities to create them... although somewhat ironically, she was not in fact single when it happened.
- Woobie, Destroyer of Worlds: The breakdown that wiped out 90% of the mutant population? Turns out it never would have happened if she hadn't been dumped on so hard by life as an Avenger.
- Multicolored Hair: Her hair is in a mixture of pink, white and blonde
- Bad Future: She, like Bishop, is from a post-apocalyptic future dominated by Sentinels.
- But Not Too Black: She is an Aborigine mutant with blonde hair
- Virtual Ghost: She died before Bishop came back in time, but he brought a holographic projection of her back with him.