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** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who fights and fatally wounds Danzo, after the BigBad reveales this bit of information to him?
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** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who fights and fatally wounds Danzo, after the BigBad reveales revealed this bit of information to him?
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** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who had fought and fatally wounds Danzo, after the BigBad revealed this bit of information to him?
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** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who had fought fights and fatally wounds Danzo, after the BigBad revealed reveales this bit of information to him?
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** Hancock in a way. Introduced as a {{Jerkass}} who kicks small animals and thinks all men in the world are trash, she utterly loathes the Government due to the fact she and her sisters were kidnapped as kids, sold into the slavery of a World Noble and forced them to eat Devil Fruits just for their entertainment. It's obvious if Hancock had the chance, she'd kill one on the spot. Heck, the main reason she helped Luffy at all, besides Love Sickness, is because of learning that he punched a World Noble.
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** Hancock in a way. Introduced way, despite being introduced as a {{Jerkass}} who kicks small animals and thinks all men in the world are trash, she trash. She utterly loathes the Government due to the fact she and her sisters were kidnapped as kids, sold into the slavery of a World Noble and forced them to eat Devil Fruits just for their entertainment. It's obvious if Hancock had the chance, she'd kill one on the spot. Heck, the main reason she helped Luffy at all, besides Love Sickness, is because of learning that he punched a World Noble.
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* [[TheEmpire The World Government]] in ''Manga/OnePiece'' seem to have a ''really'' bad habit of this if certain people escape from their cruelty and grow strong enough to be a threat.
** Hancock in a way. Introduced as a {{Jerkass}} who kicks small animals and thinks all men in the world are trash, she utterly loathes the Government due to the fact she and her sisters were kidnapped as kids, sold into the slavery of a World Noble and forced them to eat Devil Fruits just for their entertainment. It's obvious if Hancock had the chance, she'd kill one on the spot. Heck, the main reason she helped Luffy at all, besides Love Sickness, is because of learning that he punched a World Noble.
** [[EntitledBastard Doflamingo]] is a result of them because he was a World Noble and carried their attitude as a kid. Even when he killed his father and tried to present his head as a peace offering, they refused to take him back due to the choice his father made to leave them. As such, Doflamingo vowed to make them suffer and destroy the world that resulted from their forebears for the slight.
** Movie-exclusive character, [[spoiler:[[Anime/OnePieceFilmGold Gild Tesoro]], suffered from them when they bought a girl he had fallen in love with and found out she had died thanks to them. His ultimate goal was to control the World Nobles through money, which degenerated into aiming to control ''everyone'' through money, ironically being not that different from a World Noble himself.]]
** The newly-promoted [[TyrantTakesTheHelm Fleet Admiral Sakazuki]] couldn't bring himself to kill his comrade Kuzan when the two of them had their duel. [[spoiler:Kuzan, disgusted of the prospect of being a subordinate of [[GeneralRipper Sakazuki]], would later go on to join the Blackbeard Pirates.]]
** [[spoiler:Vegapunk (despite being one of the few benevolent members of the Government), created his six satellites in order to split his ideas and workload; but one of which, York, who represents his greedy side, betrays him by feeding intel about his research to the Five Elders to become a Celestial Dragon and is the main instigator of the Egghead Incident.]]
** Hancock in a way. Introduced as a {{Jerkass}} who kicks small animals and thinks all men in the world are trash, she utterly loathes the Government due to the fact she and her sisters were kidnapped as kids, sold into the slavery of a World Noble and forced them to eat Devil Fruits just for their entertainment. It's obvious if Hancock had the chance, she'd kill one on the spot. Heck, the main reason she helped Luffy at all, besides Love Sickness, is because of learning that he punched a World Noble.
** [[EntitledBastard Doflamingo]] is a result of them because he was a World Noble and carried their attitude as a kid. Even when he killed his father and tried to present his head as a peace offering, they refused to take him back due to the choice his father made to leave them. As such, Doflamingo vowed to make them suffer and destroy the world that resulted from their forebears for the slight.
** Movie-exclusive character, [[spoiler:[[Anime/OnePieceFilmGold Gild Tesoro]], suffered from them when they bought a girl he had fallen in love with and found out she had died thanks to them. His ultimate goal was to control the World Nobles through money, which degenerated into aiming to control ''everyone'' through money, ironically being not that different from a World Noble himself.]]
** The newly-promoted [[TyrantTakesTheHelm Fleet Admiral Sakazuki]] couldn't bring himself to kill his comrade Kuzan when the two of them had their duel. [[spoiler:Kuzan, disgusted of the prospect of being a subordinate of [[GeneralRipper Sakazuki]], would later go on to join the Blackbeard Pirates.]]
** [[spoiler:Vegapunk (despite being one of the few benevolent members of the Government), created his six satellites in order to split his ideas and workload; but one of which, York, who represents his greedy side, betrays him by feeding intel about his research to the Five Elders to become a Celestial Dragon and is the main instigator of the Egghead Incident.]]
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*''Anime/{{Daltanious}}'': '''Literally'''. [[spoiler:Dolmen was the clone who brought Helios's downfall, and was manufactured to be a mere slave to them until he broke free to exact his {{Revenge}}. The Helios Empire frequently tortured clones, harvested their organs, and treated them like second-class citizens, killing them when they outlived their purpose. He even lampshades that even if Daltanious kills him, as long as clones exist, their wrath and generational trauma will always exist. Harlin, to avert this, passes laws forbidding the discrimination of clones when he becomes crowned King.]]
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* Licht, from ''"Cheat Skill "Shisha Sosei" ga Kakusei Shite, Inishie no Maougun wo Fukkatsu Sasete Shimaimashita"'', is a young man with the special ability "Resurrection," who makes his living as a member of an S-Rank Adventurer's Party. However, the king, who feared his power, ordered his comrades to betray him, and in the end, executed him in an unfair manner. But Licht, who was fortunate enough to be revived because of his own skill, now, swears to carry out his revenge on humanity…
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* Licht, from ''"Cheat ''Cheat Skill "Shisha Sosei" ga Kakusei Shite, Inishie no Maougun wo Fukkatsu Sasete Shimaimashita"'', Shimaimashita'', is a young man with the special ability "Resurrection," who makes his living as a member of an S-Rank Adventurer's Party. However, the king, who feared his power, ordered his comrades to betray him, and in the end, executed him in an unfair manner. But Licht, who was fortunate enough to be revived because of his own skill, now, swears to carry out his revenge on humanity…
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* Licht, from ''"Cheat Skill "Shisha Sosei" ga Kakusei Shite, Inishie no Maougun wo Fukkatsu Sasete Shimaimashita"'', is a young man with the special ability "Resurrection," who makes his living as a member of an S-Rank Adventurer's Party. However, the king, who feared his power, ordered his comrades to betray him, and in the end, executed him in an unfair manner. But Licht, who was fortunate enough to be revived because of his own skill, now, swears to carry out his revenge on humanity…
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* Licht, from ''"Cheat Skill "Shisha Sosei" ga Kakusei Shite, Inishie no Maougun wo Fukkatsu Sasete Shimaimashita"'', is a young man with the special ability "Resurrection," who makes his living as a member of an S-Rank Adventurer's Party. However, the king, who feared his power, ordered his comrades to betray him, and in the end, executed him in an unfair manner. But Licht, who was fortunate enough to be revived because of his own skill, now, swears to carry out his revenge on humanity…
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* Licht, from ''"Cheat Skill "Shisha Sosei" ga Kakusei Shite, Inishie no Maougun wo Fukkatsu Sasete Shimaimashita"'', is a young man with the special ability "Resurrection," who makes his living as a member of an S-Rank Adventurer's Party. However, the king, who feared his power, ordered his comrades to betray him, and in the end, executed him in an unfair manner. But Licht, who was fortunate enough to be revived because of his own skill, now, swears to carry out his revenge on humanity…
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** Perhaps the best example is Number Two (and later Number One) Hero, Endeavor. [[spoiler:His biggest failure as a father and a hero turns out to be his inadvertent creation of Dabi, one of the nation's worst serial killers and mass terrorists... and Endeavour's own long lost eldest son, Toya Todoroki. While Shoto did grow up bitter and detached, he was able to recover thanks to his friends; Toya, meanwhile, was driven completely insane by [[AbusiveParents Endeavor's extreme abuse and neglect]] and ended becoming a violent, cruel man hell-bent on destroying hero society completely, but especially, on making sure that his father remains haunted by his past mistakes for the rest of his days.]]
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** Perhaps the best example is Number Two (and later Number One) Hero, Endeavor. [[spoiler:His biggest failure as a father and a hero turns out to be his inadvertent creation of Dabi, one of the nation's worst serial killers and mass terrorists... and Endeavour's Endeavor's own long lost eldest son, Toya Todoroki. While Shoto did grow up bitter and detached, he was able to recover thanks to his friends; Toya, meanwhile, was driven completely insane by [[AbusiveParents Endeavor's extreme abuse and neglect]] and ended becoming a violent, cruel man hell-bent on destroying hero society completely, but especially, on making sure that his father remains haunted by his past mistakes for the rest of his days.]]
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* ''Manga/TalentlessNana'': In the first chapter, [[spoiler:[[VillainProtagonist Nana]] pushes [[DecoyProtagonist Nanao]] off a cliff, coldly calling him "the Enemy of Humanity" before watching him fall to his doom. Several chapters later, it's revealed that he survived. Combined by the shock of being betrayed and called "Humanity's Enemy", [[TraumaCongaLine some serious crap happens to him]] that leads him to become the very villain they sought to exterminate. Ironically, by the time this all happens, Nana has had a HeelFaceTurn and became TheAtoner]].
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* ''Manga/TalentlessNana'': In the first chapter, [[spoiler:[[VillainProtagonist Nana]] pushes [[DecoyProtagonist Nanao]] off a cliff, coldly calling him "the Enemy of Humanity" before watching him fall to his doom. Several chapters later, it's revealed that he survived. Combined by Combine the shock of being betrayed betrayal with experiencing a TraumaCongaLine afterwards, and called "Humanity's Enemy", [[TraumaCongaLine some serious crap happens to him]] you have ''exactly'' [[ThenLetMeBeEvil the enemy of humanity that leads him to become the very villain they sought expected]], despite not wanting to exterminate. be one before. Ironically, by the time this all happens, was revealed, Nana has had a HeelFaceTurn HeelFaceTurn, so Nanao is basically taking her place as the enemy to the people on the island, and became TheAtoner]].
he's ''much'' worse than she is]].
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* Basically everyone in ''Anime/MobileSuitGundamSEED'' created the nightmare scenario that nearly wipes out the human race by the end. [[BornWinner Coordinators]] initially abused their genetic superiority and lorded their privilege over [[PunyHumans Naturals]], creating spiteful people like [[CompleteMonster Murata Azrael]], who goes on to lead the terrorist organization Blue Cosmos and orchestrates the [[NukeEm nuclear strikes on the Coordinator homeland]]. These kill numerous people, including the wife of [[GeneralRipper Patrick Zala]] who starts advocating for complete Coordinator supremacy and builds a KillSat that he aims at Earth to get revenge. Both sides then attempt to [[GuiltFreeExterminationWar exterminate the other completely]], killing billions on both sides over the course of two wars.
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* Basically everyone in ''Anime/MobileSuitGundamSEED'' created the nightmare scenario that nearly wipes out the human race by the end. [[BornWinner Coordinators]] initially abused their genetic superiority and lorded their privilege over [[PunyHumans Naturals]], creating spiteful people like [[CompleteMonster Murata Azrael]], Azrael, who goes on to lead the terrorist organization Blue Cosmos and orchestrates the [[NukeEm nuclear strikes on the Coordinator homeland]]. These kill numerous people, including the wife of [[GeneralRipper Patrick Zala]] who starts advocating for complete Coordinator supremacy and builds a KillSat that he aims at Earth to get revenge. Both sides then attempt to [[GuiltFreeExterminationWar exterminate the other completely]], killing billions on both sides over the course of two wars.
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** ''Anime/DragonBallGT'': The [[MadeOfEvil Shadow]] [[OurDragonsAreDifferent Dragons]] came into existence because Goku and the Z-Fighters excessively used the Dragon Balls, to undo evil acts. The consequences were removed but the bad karma (or "negative energy" in the dub) was not. Throughout the final arc of ''GT'', several of the Shadow Dragons take their time to remind Goku that their existence is his fault.
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** ''Anime/DragonBallGT'': The [[MadeOfEvil Shadow]] [[OurDragonsAreDifferent Dragons]] came into existence because Goku and the Z-Fighters excessively used the Dragon Balls, Balls to undo evil acts. The consequences were removed but the bad karma (or "negative energy" in the dub) was not. Throughout the final arc of ''GT'', several of the Shadow Dragons take their time to remind Goku that their existence is his fault.
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* The Ferals of ''Anime/SandsOfDestruction'' are directly responsible for Morte seeking to destroy the whole world in order to end their reign: [[spoiler:she was perfectly content until they wiped out her family. After that, she made it her personal mission to end the world.]] Considering they have several members of the World Salvation Committee tasked ''solely'' with finding her, she's obviously quite the thorn in their side. Compounding this is the fact that most Ferals don't seem to think much about killing anyone who opposes them, [[FantasticRacism particularly humans]], meaning [[ButForMeItWasTuesday those who actually did the killing are probably completely unaware they're the ones who set her off]]. This doesn't seem to phase her resolve, though: she's just going to KillEmAll, as she's convinced that even those who haven't harmed ''her'' have probably harmed ''someone''.
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* The Ferals of ''Anime/SandsOfDestruction'' are directly responsible for Morte seeking to destroy the whole world in order to end their reign: [[spoiler:she was perfectly content until they wiped out her family. After that, she made it her personal mission to end the world.]] Considering they have several members of the World Salvation Committee tasked ''solely'' with finding her, she's obviously quite the thorn in their side. Compounding this is the fact that most Ferals don't seem to think much about killing anyone who opposes them, [[FantasticRacism particularly humans]], meaning [[ButForMeItWasTuesday those who actually did the killing are probably completely unaware they're the ones who set her off]]. This doesn't seem to phase her resolve, though: she's just going to KillEmAll, kill all of them, as she's convinced that even those who haven't harmed ''her'' have probably harmed ''someone''.
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Times where the hero [[CreateYourOwnVillain creates their own villain]] in {{Anime}} and {{Manga}}.
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* A very interesting variant is presented in ''Manga/{{Bakuman}}''. It's the unique and slightly dark manga that the main characters wrote that sets the biggest JerkAss in the series, Toru Nanamine, on the path to becoming a conniving douche-canoe when he becomes old enough to publish his own manga. For instance, the short that they publish, ''Money and Intelligence'', which takes place in a world where people are ranked based on how smart they are and how much money they have, convinces him to borrow lots of money from his father so he can essentially buy his way to popularity at school, and rely on the advice of people from the internet to revise his manga and give him ideas. Oh, and that last part has the added bonus of completely screwing over his NiceGuy editor.
* Happens ''twice'' in ''Anime/CodeGeass''. The first time is a complete accident [[spoiler: as there was no way for Lelouch to know just how obsessed [[TeenGenius Nina]] was with Euphemia, so when she was killed by Zero Nina became one of the biggest threats due to ''creating a nuclear bomb'']]. The second time is more heartbreaking [[spoiler: as it happens to ''Lelouch'' himself after the Black Knights turn on him after listening to [[ManipulativeBastard Schneizel]]. With nothing else left to him, Lelouch becomes the EvilOverlord they considered him...however that was also ''invoked'' by Lelouch for his final plan]].
* [[spoiler: Beyond Birthday]] in the spin-off prequel novel of ''Manga/DeathNote'' was the result of [[spoiler: L and Watari]]’s TykeBomb production program.
** As was [[spoiler: Kimiko Kujo]] in the AlternateContinuity Film ''Film/LChangeTheWorld''.
* In ''Anime/DigimonTheMovie'' (the dub compilation of the first three [=OVAs=]) it's suggested that Willis is the one who created Diaboromon (and the virus that infected him was passed on to Kokomon.)
* ''Franchise/DragonBall'':
** ''Anime/DragonBallGT'': The [[MadeOfEvil Shadow]] [[OurDragonsAreDifferent Dragons]] came into existence because Goku and the Z-Fighters excessively used the Dragon Balls, to undo evil acts. The consequences were removed but the bad karma (or "negative energy" in the dub) was not. Throughout the final arc of ''GT'', several of the Shadow Dragons take their time to remind Goku that their existence is his fault.
** ''Anime/DragonBallSuper'': Future Trunks' timeline shows that Zamasu would have continued to serve Gowasu despite his grudge against mortals for many years. His present self meeting Goku and being defeated by him in a sparring match pushed him to start planning the genocide of both gods and mortals, starting with [[spoiler:taking Goku's body by using the Super Dragon Balls]]. However, once [[spoiler:Future Zamasu enters the picture and we discover that he [[JumpingOffTheSlipperySlope almost immediately jumped on-board with Goku Black's plans]]]], it quickly becomes apparent that there was already something rotten inside Zamasu long before Goku ever met him, and even if Goku hadn't triggered his StartOfDarkness, something else very well might have. [[PlayingWithATrope Of course]], it's still an example of this trope, as [[spoiler:Goku himself points out that Zamasu would never have become strong enough to accomplish his goals had he not stolen Goku's body]].
* The Amestrian military in ''Manga/FullmetalAlchemist'' are by no means heroes, committing genocide against the Ishvalans before the events of the series. [[GenocideBackfire This was exactly what created]] [[VigilanteMan Scar]], whose only goal is to avenge his people by hunting down and [[SerialKillerKiller killing every State Alchemist]] and high-ranking military officer ([[MisplacedRetribution even ones who weren't even in the military during the war]], like Ed).
* In ''Anime/MacrossFrontier'', WordOfGod states that at least in one continuity ([[AlternateContinuity there are several]]) Ranka [[spoiler: lured the Vajra to 117th Fleet just as Grace was getting married, which resulted in Grace's bridegroom being killed, and Grace being mutilated, which turned her into a cyborg, triggering her downward spiral to becoming the BigBad]].
* The [[TheFederation Federation]] in the UC Timeline of ''[[Anime/MobileSuitGundam Gundam]]'' has increasingly become an example of this in recent installments. As of [[Anime/MobileSuitGundamUnicorn Gundam Unicorn]], [[PuttingOnTheReich Zeon]] was ultimately born of a mostly successful internal attempt to prevent pro-secessionist wording from going into the Federation’s charter minutes into the Universal Century. Such wording would have functioned a bit like a safety valve, enshrining in law the right of the colonies to secede as they became self-sufficient, stable, and as [[TheWoobie space-adapted humans]] turned up among them. Without it, those fancy O’Neill cylinders turned into political pressure cookers, and Zeon and its extremely bloody twenty years of successor movements ultimately exploded out of them.
* Basically everyone in ''Anime/MobileSuitGundamSEED'' created the nightmare scenario that nearly wipes out the human race by the end. [[BornWinner Coordinators]] initially abused their genetic superiority and lorded their privilege over [[PunyHumans Naturals]], creating spiteful people like [[CompleteMonster Murata Azrael]], who goes on to lead the terrorist organization Blue Cosmos and orchestrates the [[NukeEm nuclear strikes on the Coordinator homeland]]. These kill numerous people, including the wife of [[GeneralRipper Patrick Zala]] who starts advocating for complete Coordinator supremacy and builds a KillSat that he aims at Earth to get revenge. Both sides then attempt to [[GuiltFreeExterminationWar exterminate the other completely]], killing billions on both sides over the course of two wars.
** [[spoiler: All of the above, but especially the genetic scientists who started the Ultimate Coordinator project and the rich businessman Al Da Flaga who funded them, created the series BigBad, [[WoobieDestroyerOfWorlds Rau Le Creuset]], by cloning Al and forcing him to be a perfect copy of his genetic "father." [[OnlyInItForTheMoney The scientists wanted funding]], [[ImmortalitySeeker Al Da Flaga wanted to be immortal through his clone]], and [[ForScience humanity as a whole wanted progress at any cost]]. When Rau [[CloneDegeneration turned out to have premature aging]], they discarded him and tried again. Rau killed Al in retaliation, Blue Cosmos killed the scientists, and after watching [[HumansAreBastards humanity rip itself to pieces]], Rau decided that none of us were worth saving and orchestrated events to provide Murata and Patrick the means to enact their revenge ''simultaneously'', [[KillAllHumans thereby wiping out both halves of humanity.]]]]
* Gradually becomes a more and more prominent theme in ''Manga/MyHeroAcademia''. Several of the series' most important villains ([[BigBad Shigaraki]], [[AmbiguouslyHuman Spinner]], [[PersonOfMassDestruction Dabi]], [[HeroKiller Stain]], [[CuteButPsycho Himiko Toga]], etc.) are revealed to have become what they are due to hero society's [[FantasticRacism rampant prejudice]] and [[FantasticUnderclass structural discrimination]] against those who have "villain-like" Quirks. Even one of U.A.'s own hero students, [[CreepyGood Shinso]] [[MindManipulation Hitoshi]], points out that society doesn't even try to give children like him a chance to prove themselves, instead just assuming that they'll become villains from the moment their Quirks first manifest in early childhood. This is worsened since the BigBad, All For One, is entirely too aware of this issue and is shown to actively prey on oppressed people to turn them into his minions.
** Perhaps the best example is Number Two (and later Number One) Hero, Endeavor. [[spoiler:His biggest failure as a father and a hero turns out to be his inadvertent creation of Dabi, one of the nation's worst serial killers and mass terrorists... and Endeavour's own long lost eldest son, Toya Todoroki. While Shoto did grow up bitter and detached, he was able to recover thanks to his friends; Toya, meanwhile, was driven completely insane by [[AbusiveParents Endeavor's extreme abuse and neglect]] and ended becoming a violent, cruel man hell-bent on destroying hero society completely, but especially, on making sure that his father remains haunted by his past mistakes for the rest of his days.]]
* [[AntiHero Danzo]] from ''Manga/{{Naruto}}'' [[NiceJobBreakingItHero kept on doing this]], with at least three different characters.
** First he helped Hanzo capture Konan, which resulted in the death of Yahiko, and [[WoobieDestroyerOfWorlds Nagato's]] mental breakdown.
** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who had fought and fatally wounds Danzo, after the BigBad revealed this bit of information to him?
** Apparently, Kabuto Yakushi joined Orochimaru [[spoiler: because Danzo had set up him and his adoptive mother -- both faithful and competent spies working for him -- to murder each other, but Kabuto survived]].
* In ''Anime/PuellaMagiMadokaMagicaTheMovieRebellion'', Kyubey's attempts to [[spoiler:restore the old Witch system directly causes Homura's FaceHeelTurn. Homura then becomes something even worse than a witch, [[DidYouJustPunchOutCthulhu usurps Madoka]], and sets herself up as a GodOfEvil so she can prevent Kyubey from trying anything like that ever again]].
** Additionally [[spoiler:that's also Madoka's fault. Halfway through the movie an AmnesiacGod Madoka tells Homura that she would never want to sacrifice herself the way she did in the anime. This causes Homura to believe that Madoka isn't happy in her current position as a GodOfGood, which drives Homura into creating a world where Madoka can be happy...even if it means becoming an existence that opposes Madoka]].
** On a less personal scale, ''all'' magical girls will eventually fall to despair [[spoiler:and become witches, the very monsters they once fight]]. This is why Homura opposes [[MentorArchetype Mami]]: even though Mami's ''intentions'' are good, she is unknowingly responsible for [[spoiler:the creation of witches Oktavia and Gretchen]].
* ''Manga/RanmaOneHalf'':
** [[TheRival Ryoga]] ''tries'' to call this on Ranma. According to his version of events, Ranma ran out on the fight between them (after Ryoga [[NoSenseOfDirection made him wait three days]]), [[RevengeBeforeReason "forcing"]] Ryoga to follow him... all the way to Jusenkyo, where he was kicked into a [[{{Curse}} Cursed Spring]] that makes him [[ForcedTransformation turn into a harmless little black pig if splashed by cold water]]... by a [[GenderBender certain red-headed girl]].
** [[StalkerWithACrush Mousse]] and [[LordErrorProne Kuno]] do the same sort of thing, insisting they only do the things they do because Ranma "stole" the heart of the appropriate girl ([[AccidentalMarriage Shampoo]] for Mousse, [[ArrangedMarriage Akane Tendo]] and [[AttractiveBentGender "the pigtailed girl"]] for Kuno).
** One could argue that Shampoo is a villainess that Ranma created. Yeah, she would probably be just the same if she had never left her village, but Ranma was the one who humiliated her by eating her prize and then effortlessly beating her in battle, so it's his fault she's in Nerima making a nuisance of herself.
* The government in ''Manga/RaveMaster'' decided that the best thing to do with then six-year-old Lucia is to lock him away so he won't follow in his dad and grandfather's criminal footsteps. Being wrongfully imprisoned becomes Lucia's motivation to obliterate said government.
* The Ferals of ''Anime/SandsOfDestruction'' are directly responsible for Morte seeking to destroy the whole world in order to end their reign: [[spoiler:she was perfectly content until they wiped out her family. After that, she made it her personal mission to end the world.]] Considering they have several members of the World Salvation Committee tasked ''solely'' with finding her, she's obviously quite the thorn in their side. Compounding this is the fact that most Ferals don't seem to think much about killing anyone who opposes them, [[FantasticRacism particularly humans]], meaning [[ButForMeItWasTuesday those who actually did the killing are probably completely unaware they're the ones who set her off]]. This doesn't seem to phase her resolve, though: she's just going to KillEmAll, as she's convinced that even those who haven't harmed ''her'' have probably harmed ''someone''.
* ''Manga/TalentlessNana'': In the first chapter, [[spoiler:[[VillainProtagonist Nana]] pushes [[DecoyProtagonist Nanao]] off a cliff, coldly calling him "the Enemy of Humanity" before watching him fall to his doom. Several chapters later, it's revealed that he survived. Combined by the shock of being betrayed and called "Humanity's Enemy", [[TraumaCongaLine some serious crap happens to him]] that leads him to become the very villain they sought to exterminate. Ironically, by the time this all happens, Nana has had a HeelFaceTurn and became TheAtoner]].
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Times where the hero [[CreateYourOwnVillain creates their own villain]] in {{Anime}} and {{Manga}}.
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* A very interesting variant is presented in ''Manga/{{Bakuman}}''. It's the unique and slightly dark manga that the main characters wrote that sets the biggest JerkAss in the series, Toru Nanamine, on the path to becoming a conniving douche-canoe when he becomes old enough to publish his own manga. For instance, the short that they publish, ''Money and Intelligence'', which takes place in a world where people are ranked based on how smart they are and how much money they have, convinces him to borrow lots of money from his father so he can essentially buy his way to popularity at school, and rely on the advice of people from the internet to revise his manga and give him ideas. Oh, and that last part has the added bonus of completely screwing over his NiceGuy editor.
* Happens ''twice'' in ''Anime/CodeGeass''. The first time is a complete accident [[spoiler: as there was no way for Lelouch to know just how obsessed [[TeenGenius Nina]] was with Euphemia, so when she was killed by Zero Nina became one of the biggest threats due to ''creating a nuclear bomb'']]. The second time is more heartbreaking [[spoiler: as it happens to ''Lelouch'' himself after the Black Knights turn on him after listening to [[ManipulativeBastard Schneizel]]. With nothing else left to him, Lelouch becomes the EvilOverlord they considered him...however that was also ''invoked'' by Lelouch for his final plan]].
* [[spoiler: Beyond Birthday]] in the spin-off prequel novel of ''Manga/DeathNote'' was the result of [[spoiler: L and Watari]]’s TykeBomb production program.
** As was [[spoiler: Kimiko Kujo]] in the AlternateContinuity Film ''Film/LChangeTheWorld''.
* In ''Anime/DigimonTheMovie'' (the dub compilation of the first three [=OVAs=]) it's suggested that Willis is the one who created Diaboromon (and the virus that infected him was passed on to Kokomon.)
* ''Franchise/DragonBall'':
** ''Anime/DragonBallGT'': The [[MadeOfEvil Shadow]] [[OurDragonsAreDifferent Dragons]] came into existence because Goku and the Z-Fighters excessively used the Dragon Balls, to undo evil acts. The consequences were removed but the bad karma (or "negative energy" in the dub) was not. Throughout the final arc of ''GT'', several of the Shadow Dragons take their time to remind Goku that their existence is his fault.
** ''Anime/DragonBallSuper'': Future Trunks' timeline shows that Zamasu would have continued to serve Gowasu despite his grudge against mortals for many years. His present self meeting Goku and being defeated by him in a sparring match pushed him to start planning the genocide of both gods and mortals, starting with [[spoiler:taking Goku's body by using the Super Dragon Balls]]. However, once [[spoiler:Future Zamasu enters the picture and we discover that he [[JumpingOffTheSlipperySlope almost immediately jumped on-board with Goku Black's plans]]]], it quickly becomes apparent that there was already something rotten inside Zamasu long before Goku ever met him, and even if Goku hadn't triggered his StartOfDarkness, something else very well might have. [[PlayingWithATrope Of course]], it's still an example of this trope, as [[spoiler:Goku himself points out that Zamasu would never have become strong enough to accomplish his goals had he not stolen Goku's body]].
* The Amestrian military in ''Manga/FullmetalAlchemist'' are by no means heroes, committing genocide against the Ishvalans before the events of the series. [[GenocideBackfire This was exactly what created]] [[VigilanteMan Scar]], whose only goal is to avenge his people by hunting down and [[SerialKillerKiller killing every State Alchemist]] and high-ranking military officer ([[MisplacedRetribution even ones who weren't even in the military during the war]], like Ed).
* In ''Anime/MacrossFrontier'', WordOfGod states that at least in one continuity ([[AlternateContinuity there are several]]) Ranka [[spoiler: lured the Vajra to 117th Fleet just as Grace was getting married, which resulted in Grace's bridegroom being killed, and Grace being mutilated, which turned her into a cyborg, triggering her downward spiral to becoming the BigBad]].
* The [[TheFederation Federation]] in the UC Timeline of ''[[Anime/MobileSuitGundam Gundam]]'' has increasingly become an example of this in recent installments. As of [[Anime/MobileSuitGundamUnicorn Gundam Unicorn]], [[PuttingOnTheReich Zeon]] was ultimately born of a mostly successful internal attempt to prevent pro-secessionist wording from going into the Federation’s charter minutes into the Universal Century. Such wording would have functioned a bit like a safety valve, enshrining in law the right of the colonies to secede as they became self-sufficient, stable, and as [[TheWoobie space-adapted humans]] turned up among them. Without it, those fancy O’Neill cylinders turned into political pressure cookers, and Zeon and its extremely bloody twenty years of successor movements ultimately exploded out of them.
* Basically everyone in ''Anime/MobileSuitGundamSEED'' created the nightmare scenario that nearly wipes out the human race by the end. [[BornWinner Coordinators]] initially abused their genetic superiority and lorded their privilege over [[PunyHumans Naturals]], creating spiteful people like [[CompleteMonster Murata Azrael]], who goes on to lead the terrorist organization Blue Cosmos and orchestrates the [[NukeEm nuclear strikes on the Coordinator homeland]]. These kill numerous people, including the wife of [[GeneralRipper Patrick Zala]] who starts advocating for complete Coordinator supremacy and builds a KillSat that he aims at Earth to get revenge. Both sides then attempt to [[GuiltFreeExterminationWar exterminate the other completely]], killing billions on both sides over the course of two wars.
** [[spoiler: All of the above, but especially the genetic scientists who started the Ultimate Coordinator project and the rich businessman Al Da Flaga who funded them, created the series BigBad, [[WoobieDestroyerOfWorlds Rau Le Creuset]], by cloning Al and forcing him to be a perfect copy of his genetic "father." [[OnlyInItForTheMoney The scientists wanted funding]], [[ImmortalitySeeker Al Da Flaga wanted to be immortal through his clone]], and [[ForScience humanity as a whole wanted progress at any cost]]. When Rau [[CloneDegeneration turned out to have premature aging]], they discarded him and tried again. Rau killed Al in retaliation, Blue Cosmos killed the scientists, and after watching [[HumansAreBastards humanity rip itself to pieces]], Rau decided that none of us were worth saving and orchestrated events to provide Murata and Patrick the means to enact their revenge ''simultaneously'', [[KillAllHumans thereby wiping out both halves of humanity.]]]]
* Gradually becomes a more and more prominent theme in ''Manga/MyHeroAcademia''. Several of the series' most important villains ([[BigBad Shigaraki]], [[AmbiguouslyHuman Spinner]], [[PersonOfMassDestruction Dabi]], [[HeroKiller Stain]], [[CuteButPsycho Himiko Toga]], etc.) are revealed to have become what they are due to hero society's [[FantasticRacism rampant prejudice]] and [[FantasticUnderclass structural discrimination]] against those who have "villain-like" Quirks. Even one of U.A.'s own hero students, [[CreepyGood Shinso]] [[MindManipulation Hitoshi]], points out that society doesn't even try to give children like him a chance to prove themselves, instead just assuming that they'll become villains from the moment their Quirks first manifest in early childhood. This is worsened since the BigBad, All For One, is entirely too aware of this issue and is shown to actively prey on oppressed people to turn them into his minions.
** Perhaps the best example is Number Two (and later Number One) Hero, Endeavor. [[spoiler:His biggest failure as a father and a hero turns out to be his inadvertent creation of Dabi, one of the nation's worst serial killers and mass terrorists... and Endeavour's own long lost eldest son, Toya Todoroki. While Shoto did grow up bitter and detached, he was able to recover thanks to his friends; Toya, meanwhile, was driven completely insane by [[AbusiveParents Endeavor's extreme abuse and neglect]] and ended becoming a violent, cruel man hell-bent on destroying hero society completely, but especially, on making sure that his father remains haunted by his past mistakes for the rest of his days.]]
* [[AntiHero Danzo]] from ''Manga/{{Naruto}}'' [[NiceJobBreakingItHero kept on doing this]], with at least three different characters.
** First he helped Hanzo capture Konan, which resulted in the death of Yahiko, and [[WoobieDestroyerOfWorlds Nagato's]] mental breakdown.
** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who had fought and fatally wounds Danzo, after the BigBad revealed this bit of information to him?
** Apparently, Kabuto Yakushi joined Orochimaru [[spoiler: because Danzo had set up him and his adoptive mother -- both faithful and competent spies working for him -- to murder each other, but Kabuto survived]].
* In ''Anime/PuellaMagiMadokaMagicaTheMovieRebellion'', Kyubey's attempts to [[spoiler:restore the old Witch system directly causes Homura's FaceHeelTurn. Homura then becomes something even worse than a witch, [[DidYouJustPunchOutCthulhu usurps Madoka]], and sets herself up as a GodOfEvil so she can prevent Kyubey from trying anything like that ever again]].
** Additionally [[spoiler:that's also Madoka's fault. Halfway through the movie an AmnesiacGod Madoka tells Homura that she would never want to sacrifice herself the way she did in the anime. This causes Homura to believe that Madoka isn't happy in her current position as a GodOfGood, which drives Homura into creating a world where Madoka can be happy...even if it means becoming an existence that opposes Madoka]].
** On a less personal scale, ''all'' magical girls will eventually fall to despair [[spoiler:and become witches, the very monsters they once fight]]. This is why Homura opposes [[MentorArchetype Mami]]: even though Mami's ''intentions'' are good, she is unknowingly responsible for [[spoiler:the creation of witches Oktavia and Gretchen]].
* ''Manga/RanmaOneHalf'':
** [[TheRival Ryoga]] ''tries'' to call this on Ranma. According to his version of events, Ranma ran out on the fight between them (after Ryoga [[NoSenseOfDirection made him wait three days]]), [[RevengeBeforeReason "forcing"]] Ryoga to follow him... all the way to Jusenkyo, where he was kicked into a [[{{Curse}} Cursed Spring]] that makes him [[ForcedTransformation turn into a harmless little black pig if splashed by cold water]]... by a [[GenderBender certain red-headed girl]].
** [[StalkerWithACrush Mousse]] and [[LordErrorProne Kuno]] do the same sort of thing, insisting they only do the things they do because Ranma "stole" the heart of the appropriate girl ([[AccidentalMarriage Shampoo]] for Mousse, [[ArrangedMarriage Akane Tendo]] and [[AttractiveBentGender "the pigtailed girl"]] for Kuno).
** One could argue that Shampoo is a villainess that Ranma created. Yeah, she would probably be just the same if she had never left her village, but Ranma was the one who humiliated her by eating her prize and then effortlessly beating her in battle, so it's his fault she's in Nerima making a nuisance of herself.
* The government in ''Manga/RaveMaster'' decided that the best thing to do with then six-year-old Lucia is to lock him away so he won't follow in his dad and grandfather's criminal footsteps. Being wrongfully imprisoned becomes Lucia's motivation to obliterate said government.
* The Ferals of ''Anime/SandsOfDestruction'' are directly responsible for Morte seeking to destroy the whole world in order to end their reign: [[spoiler:she was perfectly content until they wiped out her family. After that, she made it her personal mission to end the world.]] Considering they have several members of the World Salvation Committee tasked ''solely'' with finding her, she's obviously quite the thorn in their side. Compounding this is the fact that most Ferals don't seem to think much about killing anyone who opposes them, [[FantasticRacism particularly humans]], meaning [[ButForMeItWasTuesday those who actually did the killing are probably completely unaware they're the ones who set her off]]. This doesn't seem to phase her resolve, though: she's just going to KillEmAll, as she's convinced that even those who haven't harmed ''her'' have probably harmed ''someone''.
* ''Manga/TalentlessNana'': In the first chapter, [[spoiler:[[VillainProtagonist Nana]] pushes [[DecoyProtagonist Nanao]] off a cliff, coldly calling him "the Enemy of Humanity" before watching him fall to his doom. Several chapters later, it's revealed that he survived. Combined by the shock of being betrayed and called "Humanity's Enemy", [[TraumaCongaLine some serious crap happens to him]] that leads him to become the very villain they sought to exterminate. Ironically, by the time this all happens, Nana has had a HeelFaceTurn and became TheAtoner]].
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