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Comic Book / Legion (Marvel Comics)

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David Charles Haller, better known as Legion, is a Marvel Comics character created by Chris Claremont and Bill Sienkiewicz, first appearing in New Mutants #25 (dated March 1985).

Legion is the illegitimate son of Professor Charles Xavier, who famously founded the X-Men. Raised by his single mother Gabrielle Haller in Israel, David grew up not knowing his father, who was similarly oblivious to the boy's existence for much of his adult life.

After becoming the Sole Survivor of a terrorist attack, the intense trauma sustained by David ultimately led to the manifestation of his mutant abilities — namely, the ability to absorb and cycle between distinct personalities in his head, allowing him to spontaneously develop their own mutations for himself to use. Because of it, David is one of the more visible avatars for mental illness in pop culture, and especially superhero fiction; whether or not this is a good thing depends on the reader.


Though initially introduced as an antagonist in New Mutants, David is often portrayed as an anti-hero more than anything else, and his moral compass isn't as easily defined as his father's — though Xavier himself is also prone to doing some seriously shady stuff.

In 2017, Legion became the subject of an eponymous television series on FX, portrayed there by Dan Stevens. This version of the character is a bit different from his counterpart in the comics, most notably because his connection to Professor X —and the X-Men mythos at large— is unclear, only obliquely referenced to. His struggle with mental illness is also emphasized, and plays a major role in the series.

Not to be confused with L.E.G.I.O.N. (DC Comics), a modern day predecessor to the Legion of Super-Heroes.


Legion has appeared in:

Notable Comics
  • New Mutants vol. 1 (1985 — 1986)
  • X-Men: Legacy vol. 2 (2012 — 2014)
  • Legion (2018)

Live-Action TV

Western Animation

  • X-Men: Evolution (2003), voiced by Kyle Labine note 

Legion provides examples of:

  • Acid Attack: His 762nd personality can breathe out a cloud of acidic green fog.
  • Always Someone Better: Nate Grey a.k.a. X-Man is depicted as this to David in Uncanny X-Men (2018) - he's saner (albeit possibly Crazy Sane), a more skilled Telepath, a better planner, and ultimately, a more powerful Reality Warper.
  • Animal Motifs: In his solo, various superorganisms representing his mental state like bee colonies.
  • Anime Hair: His iconic look gives him an Eraserhead-like tower of hair.
  • Antagonistic Offspring: Towards Xavier at first. After Xavier's death, David decided he wants to realize his dream, but using his own methods.
  • The Atoner: One of his personalities, telepath Jemail Karami, was actually the psychic ghost of one of the terrorists who tried to kill him to begin with. After a while in the kid's mind, Jemail decided he'd been wrong and dedicated his existence to restoring David's sanity.
  • Badass Boast: In Uncanny X-Men (2018), he gives a rather good one to Nate Grey, who he'd trapped inside his head. Unfortunately, Nate being a monstrously powerful telepath, it didn't quite work.
    I think you'll find that my mind is a little more complicated than what you're used to, big man. Do you really think you're the first super-powered child to throw a tantrum in here? I have ways of dealing with you. We all do... we are Legion.
  • Bed Trick: During the Legion Quest story that'd lead to Age of Apocalypse, an amnesiac Legion used his powers to go back in time and pose as his own father and then sexually assault his own mother, Gabrielle Haller.
  • Blessed With Suck: Legion sure won the Superpower Lottery... Except that David, the core personality, can't use the powers that belong to his splinter personalities, and that several of the personalities are nasty customers indeed.
  • Breaking Speech: Receives a brutal one from Nate Grey when the two square off in Uncanny X-Men (2018).
    Nate: Your father failed you. To soothe your broken mind he told you that there is a real you buried in there. He told you that the mind is the self. What you are. I know the mind is but a tool. And tools can be taken away. This is my mind now.
  • Breath Weapon: His 762nd personality can breathe out a cloud of acidic green fog.
  • The Bus Came Back: After being missing from the end of Age of Apocalypse, David eventually returned during the Utopia era.
  • Catch Phrase: "Mine is the power of [insert personality/ power name he is currently using here]" in Legacy. His other one is "I rule me", which also serves as the Arc Words.
  • Children Are Innocent: David's core personality is usually depicted like this.
  • Combat Pragmatist: Sees no problem in cheating his way to victory.
  • Combo Platter Powers: In a way, this is his superpower; he can create any superhuman power he can think of, at the drawback of having to create a secondary personality to control it. When he learns to take control of multiple personas for his own use, naturally, he can combine his individual powers in whatever way he pleases. Some of those personalities play the trope straight themselves by having distinct combinations of powers; examples include Absence (can siphon off heat and love), Kirbax the Kraklar (flight and electricity generation), and K-Zek the Conduit (wireless energy transfer and electricity absorption).
  • Curb-Stomp Battle: He doles these out to enemies like paper flyers simply by the multitude of powers he possesses and his ability to use them when focused.
    • He ends up on the receiving end of one of these when he tries trapping X-Man in a simulated version of the Age of Apocalypse inside his head, without his powers. All this ultimately results in is a very angry Nate, who - once he figures it out - crushes Legion in about five seconds and pulls a Grand Theft Me.
  • Cursed With Awesome: Being mentally ill often helps him in his plans and enables him to concoct incredibly convoluted schemes.
  • Deconstruction: His solo in X-Men: Legacy has a number of jabs at usual X-Men conventions. The fact that they only find mutants with "flashy" powers, filling their ranks with combat capable mutations, the fact that they're so ineffective the X-Men still need to be soldiers, and that none of them seem to work on human-mutant relationships anymore like how mutants can not only coexist but also aid society.
  • Defeat Means Friendship: After his defeat from the "New Mutants", Legion became their supporting character and unofficial member of the team.
    • Apparently, in Age of X-Man, with Nate Grey, with Legion finally getting some peace and quiet in the titular reality.
  • The Dreaded: Anyone who knows about a fraction of what he can do is terrified of him and the X-Men in general give him a wide berth whenever possible.
  • Enemy Without: In the first volume of X-Men: Legacy he seeks help of his father, Rogue, Magneto, Frenzy and Gambit, after several of his personalities escape. In the second volume, an evil personality modeled after his old man escapes and tries to destroy the world
  • Embarrassing Nickname: David hates being called Legion. He says it's incredibly insensitive and tantamount to calling an epileptic superhero, "Spasmo".
  • Famous Last Words: I was too bloody good for this place anywa..
  • Fatal Flaw: In his solo series it's lack of trust. David is unable trust anybody but himself, so he manipulates people around him. As it turns out he is unable to trust even himself - this is why he personalized parts of his mind as alien beings and needs to fight to control them.
    • It recurs in the run up to Age of X-Man, leading to his convoluted plan to stop Nate Grey. Unfortunately, it has the exact opposite of the desired effect, and he's comfortably Out-Gambitted by Nate.
  • A God I Am Not: In finale of Legacy, David merges with Weaver, becoming basically a god and starts fixing damage done by evil Xavier and himself. But then he realizes if he doesn't stop, he'll have to take control of the world and change it in his image. Which would go against all he believes in.
  • Gondor Calls for Aid: Losing his final fight with Evil Xavier, David realizes his manipulative behavior alienated people from him so there is no one he can call for help now. Then it turns out he subconsciously sent his cries for forgiveness to all those people. And in response they came to help him.
  • Gone Horribly Right: It's revealed in Hickman's X-Men run that David was purposefully conceived as part of Xavier and Moira's plan to breed a powerful mutant. They certainly got what they wanted.
  • Grand Theft Me: On the receiving end from Nate Grey in Uncanny X-Men (2018).
  • Guile Hero: In X-Men: Legacy vol. 2, David picked a habit of manipulating people for the greater good. Sometimes, might take it straight into Magnificent Bastard territory. Later deconstructed - the series makes it clear the people he manipulates either see him as just a dangerous, unstable individual or an outright Manipulative Bastard, so while he gets the job done, he utterly fails at making any friends.
    • He tries this in Uncanny X-Men (2018) as part of trying to stop X-Man, but his desperation, lack of communication/lack of trust, and just being too late mean that he fails miserably.
  • Keystone Superpower: David Haller has the ability to create spontaneous mutations, granting him a virtually limitless number of mutant abilities. He has 200 "Omega Level Mutations". For comparison, about a dozen omega level mutants are known to exist.
  • Many Spirits Inside of One: He had multiple personalities with different superpowers. Then he went better, but as a whole was so powerful that he caused the Age of Apocalypse. He later came back, now having hundreds of personalities, each with its own unique power. Some of them are minds of dead people he drained, making him a combination of this trope and Mind Hive.
  • Mental Affair: Has one with Ruth at the end of his solo series.
  • Odd Couple: With Blindfold in Legacy.
  • Papa Wolf: In Legacy David becomes protective of children and firmly believes the fact young mutants still have to learn to defend themselves proves X-Men failed to accomplish anything.
  • Physical God: At his full potential, he becomes one of these and has been called a God and a God-Mutant when he has his full wits about him. Best summed up by his own mother when he awoke from his coma with a more collected mind.
    Danielle Haller: Even untrained, he's ten times the Psi his father is. He can do anything he puts his mind to. Anything. In short, X-Men, my son is a God.
  • Plot-Relevant Age-Up: In his solo series his core personality grew to his actual age.
  • Power Parasite: Played with. In his solo series he learned to have his core personality drain the powers of his other personalities, allowing him to use them himself without having to cede his body over to that personality, and to combine powers from different personalities.
  • Psychoactive Powers: However, how strength his core personality depends on his own confidence or determination - if he allows himself to be consumed by doubt, he barely can drain weakest personalities. When he really gets his head set on something, he can get the strongest ones. after David learns to merge with his personalities, high confidence allows him to do this wih strongest ones
  • Punny Name: Cyndi (cinder), the pyrokinetic personality.
  • Put on a Bus: He erased himself from existence, thus retconning any memory of it except for in Blindfold's mind. Then he's suddenly back for a second mini, then in Incoming! knowledge of him is back but according to Sinister no one knows where he is.
  • Rape Is a Special Kind of Evil: As noted under "Bed Trick", it's implied during Legion Quest that an amnesiac David used his powers to pose as Charles and then sexually assault his own mother.
  • Reality Warper: The most powerful of Legion's personalities, including the ones that are more or less cohesive amalgamations of his shattered psyche, have the ability to change reality itself in wide-sweeping ways, to the point of creating an entire alternate universe during Age Of X storyline.
  • Ret-Gone: In the end of Legacy he wiped himself from existence in the 616-world, the sole person remembering him being Blindfold.
  • Split Personality: Varying in number; originally it was just three plus Jemail, but things have gotten... complicated.
  • Superpower Lottery: Telepathy, telekinesis, pyrokinesis... too many things to count... Taken Up to Eleven in the "Age of X" storyline, where he goes and creates an entire universe. His power designation in Hickman's X-Men run is Omega level Power Manifestation and according to Rogue new powers are being birthed with new personalities constantly.
  • Superpowered Evil Side: Jack Wayne, among others (Jack was not the only malicious personality, but he did take over several of the others' powers at times, making him the most dangerous).
  • Tomato in the Mirror: All his personalities are aware they're in his head, but most of them believe they're real (which given David's abilities, might be true). At the climax of his solo, his most powerful personality, the Great Weaver, reveals it has his face and its dialogue implies that David is the errant ego running around with his body.
    • This is exploited and developed by Nate Grey in his Breaking Speech when the two face off in a Battle in the Center of the Mind, coldly deconstructing the idea that there is an original David at all. Cue Grand Theft Me. This could have just been psychological warfare (and if it was, it worked like a charm), but it has a disturbing plausibility.
  • Unexplained Recovery: Was given a second series where he was inexplicably unerased from existence and desperately seeking the help of a psychotherapist to quell the uprising of a malevolent personality.
  • Unwitting Instigator of Doom: During the 90s, Legion travelled back in time to kill Magneto, reasoning that his father would have a better life if Magneto hadn't been there. Unfortunately, Charles took the fatal blow for Erik, and the brawl itself woke up Apocalypse several decades early, creating the Age of Apocalypse.
    • This later drives his actions in the run up to Age of X-Man, as he blames himself for the titular reality's creation and, thereby, Nate Grey.
  • Villains Act, Heroes React: In his solo series he becomes critical of this approach and tries to be more proactive kind of hero by removing enemies before they become more dangerous.
  • What Happened to the Mouse?: Jemail Karami seems to have vanished entirely.
  • What the Hell, Hero?: Oh so very often in his solo series. Pretty much everyone from Blindfold to Pete Wisdom to Aarkus calls him out on his manipulative ways. Except for Pixie, Chamber and Frenzy, who skipped that part and just beat the living shit out of him.

Alternative Title(s): Legion


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