* Sonia and Dr. Hart in ''{{lonelygirl15}}''.
* Fair numbers of this happen in ''SurvivalOfTheFittest''. Mostly, it is the result of a 'player' stopping killing their fellows, usually due to a guilty conscience.
** Hawley Faust of the first game, although he was semi-convinced instead of spontaneously deciding to quit.
** Julie Mikan in V3. She set out to actively play, but after killing [[spoiler:Owen Fontaine]] realised she didn't have what it takes and became a heroic character instead.
** Dominica Sharpiro, also of V3. A less conventional example in that she made the switch purely on the chance the escape plan of the group she joined would succeed.
** Sharon Kulikov, similarly to Julie, originally decides to play indiscriminately, but upon realizing that she can't bring herself to do that she resolves to only target other players.
** The most recent example is probably [[spoiler:Bobby Jacks]], although [[AntiVillain he was pretty shaken up about killing other people.]]
** Laeil Burbank, who started off as a vengeful PsychoLesbian, until she pissed off an even bigger player who...[[ColdBloodedTorture decided to]] [[EyeScream have some]] [[KillItWithFire fun with]] [[LeftForDead her]]. After [[BigDamnHeroes she's rescued]], by someone who's best friend she'd killed (though it was a MercyKill), punched in the face, and told that if she ever saw him again, she'd kill him no less, she decides that she's through with being an indiscriminate killer (unfortunately, [[RedemptionEqualsDeath she doesn't survive for very long after that).]]
** [[spoiler: Sarah Atwell]], [[MoralEventHorizon who took part in one of the most horrific murders]] of V4, is now making a bid for redemption through [[VigilanteMan killing other players]] after a [[MyGodWhatHaveIDone shocking]] [[HeelRealization realization.]]
*** [[spoiler: Of course, she ends up dying crying and begging on the floor to not die.]]
* Pythos of ''Roleplay/{{AJCO}}'' pulls one of these at the end of the Trial To End All Days, confessing to the court that she believes AJ was guilty of everything she had been charged with and more. It's especially impressive considering she had been antagonising Egg constantly up to that point, and even more impressive considering ''she was AJ's defense attorney''.
* Happens with several characters from the ''DarwinsSoldiers'' [=RPs=], most notably with Hans.
* Possibly ''TheNewAdventuresOfCaptainS'': in the last episode of the first season, NES digs up a Sega Menacer for Captain S to use against Game Genie (NES's former master). Although, the series ended with NES's fate unknown, so his motivation for doing this is just as unclear.
* In most of the ''WebAnimation/MadnessCombat'' shorts, Jeebus is the enemy of the protagonist, Hank. However, in Part 8, he is featured as trying to stop the Mooks and new BigBad.
* [[spoiler:Ralph]] from ''DeadEnds'' pulls one of these when he realizes that [[spoiler:he is hunting down an unarmed teenager and her friend during a ZombieApocalypse because his best friend, Ephram, has gone batshit crazy.]]
* Surprisingly rare in the ''GlobalGuardiansPBEMUniverse''.
** Battle betrayed [[NebulousEvilOrganization Tarot]] to save the life of her son, Stone.
** Gadgeteer villain Knick-Knack retired from his life of crime and became the custodian of the Hyperion Academy.
** The Redeemers are a team made up of former super-villains.
* Gross Sword does this at the end of [[http://www.rogermwilcox.name/ADnD The Sick Kids]], but only because his lawful-good siblings nearly kill him.
* Bogdan from ''Machinima/WaterHuman'' does that after he develops a liking for a prisoner that his partner tells him to kill. He proceeds to attack his own partner.
* Kelly from ''WereAlive'' is easily [[TheScrappy the most hated character]] among both the cast and audience during Season 1, but eventually pulls one of these after her attitude indirectly kills [[spoiler:Tommy]].
* [[AntiVillain Demonking]] does this in ''{{TOME}}''. [[spoiler:Then he becomes bad again, but then ascends again and is currently more of a rival to Nylocke than a bad or good guy.]] [[spoiler:This entire process is subverted when it's revealed the hackers aren't really bad guys anyway.]]
* [[OurDemonsAreDifferent Spiro]] of ''TheQuestportChronicles'' pulls one after refusing to kill a Demon Bunny for his master's dinner. He's banished from his homeland for showing mercy, and ends up as the TokenEvilTeammate in the Fellowship.
** [[spoiler:The King of Thieves and Assassins]] reforms after hearing the Harp of Remorse.
* In ''Roleplay/TheGamersAlliance'', a bunch of antagonists eventually switch sides and become more heroic. Some examples include [[ColonelBadass Dalthas]], [[AntiAntiChrist Jemuel]], [[AntiVillain Kagetsu I]] (he joins the Alliance because they saved his wife, but he still more or less pursues his agenda albeit with different means while being bound by his oath to the Alliance), [[TheAtoner Omaroch]], [[HarmlessVillain Titaniel]] and [[LoveRedeems Viirsa]].
----