History HeelFaceTurn / MarvelUniverse

*** [[spoiler:Mystique eventually decides to give up her vendetta against Trask to prevent future bloodshed against Mutants. She also saves Nixon and his cabinet from Magneto.]]

** In the climax of ''Film/ThorRagnarok'', Loki returns to Asgard with a big spaceship to evacuate the surviving Asgardians [[ChangedMyMindKid instead of running off]]. At the end of the movie, he still stays at Thor's side. In ''Film/AvengersInfinityWar'', Loki [[spoiler:declares himself an Odinson before [[RedemptionEqualsDeath sacrificing his own life]] [[BigBrotherInstinct to save his brother]] from Thanos.]]

** In ''Film/IronMan1'', Tony sums up his new change in direction to Obadiah when he chews him out for shutting down the weapons enterprise of Stark Industries;

** Gamora from ''Film/GuardiansOfTheGalaxy2014'' starts out as Thanos' adopted daughter and his closest confidante, de facto making her one of the biggest villains in the series. But her interactions with the rest of the Guardians influence her to switch sides.
** In ''Film/AvengersAgeOfUltron'', after Wanda Maximoff reads the subconscious thoughts of Ultron through the Vision's body while Ultron is Brain Uploading himself into it, she finds out his plan to annihilate mankind, and quickly changes sides along with her brother Pietro.
** In ''Film/GuardiansOfTheGalaxyVol2'', Nebula struggles with joining the Guardians and ends the film on their side, but leaves to continue her crusade against Thanos. In ''Film/AvengersInfinityWar'' she is fully on the heroes' side, even going as far as to find the Guardians and tell them what happened.

** In ''Film/AntManAndTheWaspQuantumania'', [[spoiler: Darren Cross, BigBad of the [[Film/AntMan1 first film]] now turned into the creature called M.O.D.O.K., instantly switches sides when, of all things, Cassie tells him "Don't be a dick", and he dies fighting Kang.]]

*** [[spoiler:Magneto]] seems to have made the turn between ''Film/XMenTheLastStand'' and his cameo appearance at the end of ''Film/TheWolverine'', because in this movie, [[spoiler:Future Magneto is firmly on Professor X's side throughout and ultimately makes a HeroicSacrifice against the Sentinels during the climax]].

* ''Series/AgentsOfSHIELD'' excellently subverts this. After being revealed as a HYDRA agent and killing several people, Ward starts off Season 2 claiming to be making amends and clearly thinking he'll be accepted. However, it's soon made clear the team are ''never'' going to forgive him for what he did and thus his turn never takes (in large part because Ward's actual motives don't really seem to be all that pure anyway).

* Rogue in ''WesternAnimation/XMenEvolution''. The episode in which she does this is one long [[Awesome/XMenEvolution Crowning Moment of Awesome]] for her.

** In the climax of ''Film/ThorRagnarok'', Loki returns to Asgard with a big spaceship to evacuate the surviving Asgardians [[ChangedMyMindKid instead of running off]]. At the end of the movie, he still stays at Thor's side. In ''Film/AvengersInfinityWar'', Loki [[spoiler:declares himself an Odinson before [[RedemptionEqualsDeath sacrificing his own life]] to [[BigBrotherInstinct save his brother]] from Thanos]].

** Back in the 1980s, the Sandman got sick of crime and went straight. He actually joined the Avengers for a while. That lasted a good twenty years, real-world time. Then his old teammate the Wizard stuck him in a machine and [[StausQuoIsGod brainwashed him to be evil again]]. Sigh.

** Overdrive from ''ComicBook/TheSuperiorFoesOfSpiderMan'' is smart enough that this trope is his entire reason for being a costumed villain. He grew up as a young boy who idolized superheroes, and reasoned that the quickest way to become an Avenger would be to start off as a villain and then eventually reform and fight alongside his childhood heroes.

** In ''ComicBook/LastRemains'', Norman Osborn goes through this as a result of Kindred's [[HeelFaceBrainwashing influence]] and become TheAtoner. [[StatusQuoIsGod How long this will last]] has yet to be seen, but he decides to become the "ComicBook/GoldGoblin".

* This is so common for ''ComicBook/TheAvengers'' that it's been {{lampshade|Hanging}}d. We have (among others) ComicBook/{{Hawkeye}}, ComicBook/BlackWidow, ComicBook/ScarletWitch, ComicBook/{{Quicksilver}}, ComicBook/TheVision, [[ComicBook/SubMariner Namor]], and ComicBook/RedHulk, each of whom started off as villains before reforming and joining the team.
** Around the time of ''ComicBook/{{Siege}}'', [[ComicBook/AntMan Hank Pym]] tried to recruit Loki by citing the large number of former villains who ended up as members of the Avengers. This prompted a WhatTheHellHero from the rest of the team, since Loki is the fricking ''Norse god of evil.''
*** Amusingly enough given the above, the original Loki was killed during ''ComicBook/{{Siege}}'' and his later incarnations ''have'' attempted a HeelFaceTurn. One did in fact join the ''ComicBook/YoungAvengers''.

** Back in the 80's, the Sandman got sick of crime and went straight. He actually joined the Avengers for a while. That lasted a good twenty years, real-world time. Then his old teammate the Wizard stuck him in a machine and brainwashed him to be evil again. Sigh.
** In ''ComicBook/LastRemains'', ComicBook/NormanOsborn went through this as a result of Kindred's [[HeelFaceBrainwashing influence]] and become TheAtoner. [[StatusQuoIsGod How long this lasts]] has yet to be seen, but he decides to become the "ComicBook/GoldGoblin".

** In the climax of ''Film/ThorRagnarok'', Loki returns to Asgard with a big spaceship to evacuate the surviving Asgardians [[ChangedMyMindKid instead of running off]]. At the end of the movie, he still stays at Thor's side. In ''Film/AvengersInfinityWar'', Loki [[spoiler:declares himself an Odinson before [[RedemptionEqualsDeath sacrificing his own life]] [[BigBrotherInstinct to save his brother]] from Thanos.]]

** In ''Film/TheWolverine'', [[spoiler: Harada switches allegiance from Ichirō Yashida as 'the head of the Yashia family' to Mariko, who was named the head after Ichirō's faked death]].
** ''Film/XMenDaysOfFuturePast'':\\\
[[spoiler:Magneto]] seems to have made the turn between ''Film/XMenTheLastStand'' and his cameo appearance at the end of ''Film/TheWolverine'', because in this movie, [[spoiler:Future!Magneto is firmly on Professor X's side throughout and ultimately makes a HeroicSacrifice against the Sentinels during the climax]].\\\
[[spoiler: Mystique eventually decides to give up her vendetta against Trask to prevent future bloodshed against Mutants. She also saves Nixon and his cabinet from Magneto.]]
** ''Film/XMenApocalypse'', [[spoiler: in the new timeline, Magneto turns against Apocalypse when he realizes that the people he's currently targeting (Mystique and Professor X) are the only loved ones he has left. Storm also makes one when Apocalypse begins attacking Mystique, her idol.]]

* HeelFaceTurn/XMen
** HeelFaceTurn/XMenTheKrakoanAge

** Overdrive from ''ComicBook/SuperiorFoesOfSpiderMan'' is smart enough that this trope is his entire reason for being a costumed villain. He grew up as a young boy who idolized superheroes, and reasoned that the quickest way to become an Avenger would be to start off as a villain and then eventually reform and fight alongside his childhood heroes.

* Rogue in ''WesternAnimation/XMenEvolution''. The episode where she does this is one long [[Awesome/XMenEvolution Crowning Moment Of Awesome]] for her.

** In ''ComicBook/LastRemains'', [[spoiler: ComicBook/NormanOsborn]] went through this as a result of Kindred's [[HeelFaceBrainwashing influence]] and become TheAtoner. [[StatusQuoIsGod How long this lasts]] has yet to be seen.

** Gamora from ''Film/GuardiansOfTheGalaxy'' starts out as Thanos' adopted daughter and his closest confidante, de facto making her one of the biggest villains in the series. But her interactions with the rest of the Guardians influence her to switch sides.

** HeelFaceTurn/DawnOfX

!!Franchise/MarvelUniverse

** ''ComicBook/UltimateSpiderMan'': After getting arrested twice, Bombshell was given a third chance to have a normal life. She is unwilling to continue her life of crime and begs Peter to keep her powers a secret from the other students.

* ComicBook/{{Wolverine}}: Originally an antagonist sent to kill the Hulk (who himself is a big spinning heel-turn himself... not that both characters don't have their reasons...).
* ''ComicBook/XMen'':
** ComicBook/EmmaFrost's Heel Face Turn is proving permanent. However just like Jean, Emma suffers from the NeverLiveItDown trope. The story that cemented her position as a central X-Man was also the story in which the readership was first led to believe she betrayed the X-Men, just to discover later that she was being psychically manipulated by [[spoiler:Cassandra Nova. Before having her own mind trapped inside an indestructible box, Nova had left a psychic impression of herself in Emma's mind, which was subtly manipulating her. That impression slowly twisted Emma's perception of herself, exploiting her survivor's guilt and making her believe she could never redeem herself.]] In the end, it was shown that Emma was willing to sacrifice herself so that [[spoiler:Nova]]'s plan wouldn't succeed. Besides that story, the only other time Frost fitted this role was during Dark Reign, when she joined Norman Osborn's Cabal, [[spoiler: as part of her and Cyclops' plan to later make a fool of Osborn and guarantee the safety of mutantkind]]. Also, while part of the fanbase and some writers believe Emma is still not trusted by her teammates, there are many evidences pointing the opposite. For one, she's been banking the X-Men for quite some time now, and they're not uncomfortable with that. More importantly, she's been the main Cerebro user ever since Professor Xavier left, and the X-Men are ok with that (Cerebro is a machine able to boost one's telepathic power to impressive levels. By letting Emma use it, the X-Men are leaving their minds - and those of thousands of innocents - completely vulnerable to her powers, which says a lot).
** How ComicBook/{{Gambit}} came to join in the X-Men.
** And ComicBook/{{Rogue}}. Interestingly, her Heel Face Turn was triggered by kissing ComicBook/ROMSpaceknight and being [[ThePowerOfLove overwhelmed by his goodness]]. Licensing [[ExiledFromContinuity tarpits]] mean you won't see that mentioned again, ever.
*** For everyone but the three people who might remember that issue of ROM, it was the fact that her powers were driving her slowly insane and she was realizing that Mystique was both unable and unwilling to help, with a little nudge from Mastermind (who wanted to put the screws into Mystique by inducing her beloved foster daughter to run away) that did the trick.
** There's also Sunfire, Banshee, Magneto himself, Marrow...
* This is fairly common for {{Alternate Universe}}s in general, but ComicBook/AgeOfApocalypse is a great Creator/MarvelComics example; many of the mainstream continuity's villains are either slightly less vile villains (Mister Sinister, for example, who [[EvenEvilHasStandards is opposed to Apocalypse's genocidal desires]]), or outright heroes.
** Magneto is the founder and leader of this continuity's version of the X-Men.
** Sabretooth goes from a villain with standards to a genuine believer in Magneto's creed, a would-be atoner, and a surrogate father figure to Blink and Wildchild.
** Sauron and Toad, both minor villains, are on the heroic side and loose allies of the X-men here.
** Mystique ferrets out information for Magneto and runs a secret escape line for smuggling humans out of Apocalypse's genocide-zones... although she also remorselessly skims wealth from her "customers" as well.
* During ComicBook/DawnOfX, a large number of formerly villainous mutants joined Xavier's side when he established Krakoa as a nation for mutantkind. See [[HeelFaceTurn/DawnOfX that page for the full roster.]]