[[quoteright:250:[[Webcomic/SaturdayMorningBreakfastCereal http://static.tvtropes.org/pmwiki/pub/images/create_your_own_villain.jpg]]]]

->'''Batman:''' I'm going to kill you.\\
'''Joker:''' You IDIOT! You ''made'' me, remember?? You dropped me into that vat of chemicals. That wasn't easy to get over, and don't think that I didn't try.\\
'''Batman:''' I know you didn't. '''*punch*'''
-->-- ''Film/{{Batman}}''

{{Superhero}}es try to rid the world of villains. Unfortunately, sometimes they have the opposite effect.

Maybe TheHero accidentally wronged some InnocentBystander -- say, they or their loved ones were casualties in the [[HeroInsurance collateral damage from a super-battle]] -- and said bystander decides to [[ThenLetMeBeEvil turn evil to settle the grudge]]. Alternatively, the character may already be evil, but the Hero's intervention results in the villain gaining superpowers, and [[ItsPersonal a super-grudge]] to boot.

In a parody or deconstruction of this trope, it might go on to reveal that the actions of the hero were actually irrelevant in terms of the individual's true nature. They were ultimately a disturbed individual who was [[NeverMyFault looking for the first excuse they could find to justify their evil behavior]].

Naturally, this is common in comic books. In many cases, however, the villain's [[StartOfDarkness origin story]] isn't even hinted at in their first appearance--it's only after the villain becomes popular that they're given a personal tie to the Hero via [[RetCon Retroactive Continuity]].

Opposite of CreateYourOwnHero. One of the causes of the SuperheroParadox. May be caused by a PacifismBackfire. See also AvengingTheVillain, DisproportionateRetribution, NiceJobBreakingItHero and UnwittingInstigatorOfDoom. Contrast with WeirdnessMagnet, where the Hero doesn't ''create'' the villains, but seems to ''attract'' them all the same.


[[folder:Anime and Manga]]
* [[spoiler: Beyond Birthday]] in the spin-off prequel novel of ''Manga/DeathNote'' was the result of [[spoiler: L and Watari]]ís TykeBomb production program.
** As was [[spoiler: Kimiko Kujo]] in the AlternateContinuity Film ''Film/LChangeTheWorld''.
* 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]].
* [[AntiHero Danzo]] from Manga/{{Naruto}} [[NiceJobBreakingItHero kept on doing this]], with at least three different characters.
** First he helped Hanzou capture Konan, which resulted in the death of Yahiko, and [[WoobieDestroyerOfWorlds Nagato's]] mental break down.
** Then he had Itachi murder the entire Uchiha clan, who however left his brother, Sasuke alive. Guess who had killed 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]].
* 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.
* ''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 [[BalefulPolymorph 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.
* 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.)
* 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 GoddessOfEvil 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 GoddessOfGood, 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]].
* ''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. [[spoiler: 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 taking Goku's body by using the Super Dragon Balls.]] However, given [[spoiler: how quickly Future Zamasu [[JumpingOffTheSlipperySlope jumped]] at the chance to join his alternate past self]], something similar would have happened eventually.
* 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 Federationís 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 OíNeill cylinders turned into political pressure cookers, and Zeon and its extremely bloody twenty years of successor movements ultimately exploded out of them.
* 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''.
* 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.
* 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.]]

[[folder:Comic Books]]
* Franchise/{{Batman}}'s foes:
** ComicBook/TheJoker. Many details of Joker's origin vary, but it's widely accepted that the Bat was somehow responsible for the Joker's fall into the vat of chemicals that turned him into the psychopathic clown.
** It's often suggested that while Batman isn't directly involved their origin, the tendency of his RoguesGallery to have garish costumes and gimmicks are a reaction to Batman's own. Batman's greatest triumph was to break the mob's hold on Gotham, and his greatest failure was attracting a bunch of psychopathic weirdos to take their place.
** This was subverted in the ''WesternAnimation/BatmanTheAnimatedSeries'' episode "The Trial" mentioned below. He was put on trial by the Arkham inmates, with the Joker as judge, for the 'crime' of creating them all. In the end, the jury, made entirely of Batman's enemies, couldn't find him guilty of that... they admitted that the trappings or gimmicks might have been different without him, but they were what they were before he even showed up.
** One really dark storyline in ''ComicBook/GothamCentral'' featured a reporter who killed a bunch of teenage boys and dressed up their bodies to look like Robin solely because he wanted to become a Batman villain.
** Clayface V is an example, although the creation was a result of Jean-Paul Valley's actions as Batman, rather than Bruce Wayne. Valley defeated both of Cassius Clay Payne's parents (Clayface III and Lady Clayface), causing him to become a ward of the State. [[GenreSavvy He knew that putting an already special-needs metahuman child in such a situation would almost certainly create a supervillain]]...[[WhatTheHellHero he just didn't care.]]
** An incredibly rare EvilVersusEvil example of this is ComicBook/PoisonIvy creating the monstrous PlantPerson Harvest; originally a ManEatingPlant she engineered for her own amusement, after a year of feeding it with any human she felt like (citing victims as including "tiresome lovers, incompetent henchmen and people who returned [my] smile"), the sheer number of human brains dissolving in its system affected it; the plant mutated into a monster possessed by the fragmented psyches/souls of all its former meals, driving it to hunt and attempt to kill its own creator.
** Ironically [[CreateYourOwnHero inverted]] with Batman himself: it was the mob and the Court of Owls' rule over Gotham, and the death of the Waynes in particular, that drove Bruce Wayne to become Batman.
** In ''ComicBook/BatmanTheDarkKnightReturns'', a psychiatrist argues that Batman has this effect on Gotham as a whole, due to his sheer charisma and force of presence causing others to mold themselves to fit, essentially claiming that Batman has a mental illness that spreads via MemeticMutation. What's even more interesting, is that the comic at least implies that this is actually the case, with [[spoiler: The Joker coming out of a decade-long catatonia in response to Batman's return]].
* ''Franchise/{{Superman}}'':
** Pre-ComicBook/{{Crisis|OnInfiniteEarths}}, ComicBook/LexLuthor was a fan of Superman, then went on to hate his guts after an accident made Luthor lose his precious... hair, as well as a protoplasmic lifeform he had created, and his laboratory. Luthor believed that it was done out of jealousy for Luthor's genius and vowed to prove he was better than Supes. While this seems like DisproportionateRetribution, that same story had Luthor create multiple grandiose engineering projects for Smallville to show Superboy up, only to have all of them go disastrously wrong and force Clark to intervene. Thus Luthor's hate grew due to his warped perception that Superboy was out to publicly humiliate him despite the fact that Superboy had no choice in the matter. Later, in UsefulNotes/{{the Silver Age|OfComicBooks}}, Luthor gained a more legitimate reason: He blamed Supes for the death of his wife. Nowadays he's often still technically self-created, but it's not exactly Superman's fault: he turned to villainy over jealousy of Superman's achievements.
** The jealousy factors into his Silver Age origin as well. The experiment Superboy interrupted was one of a series of increasingly over the top acts of science Luthor was engaging in to win respect and admiration that kept getting overshadowed by the Boy of Steel.
** The villain Gog gets his start when Superman shatters his illusions about Superman being some messiah, thus causing Gog to see him as the Antichrist.
** Bizarro, naturally, since he's an imperfect copy of Superman. Parasite would arguably be less dangerous without Superman to drain for power, and Metallo would at least be much more limited in his activities since Kryptonite is by far the best power source for his robot body.
** ComicBook/PostCrisis, Metallo is created by Professor Vale, who believes Superman is an alien invader, and creates Metallo to defend humanity. In the comics continuity post-ComicBook/{{Flashpoint}}, John Corben decides to become Metallo after seeing Superman easily fight his way out of a high security military base.
--> '''Vale''': Are you sure you want to go through with this, John?
--> '''John Corben''': You saw what happened earlier. We need Steel Soldier more than ever, Professor Vale. [[BewareTheSuperman Someone has to stop Superman]]... We're going to do what we have to.
** Supes also brought the Eradicator to Earth (it was a supercomputer from Krypton, he just didn't realize its purpose would be malevolent.) He threw the Eradicator into the sun, causing the Eradicator to come back as an energy being, then the energy being created a new body for itself based on Superman.
** Cyborg Superman. Superman believed that energy being Hank Henshaw could not master Kryptonian technology, so he trapped Henshaw in his birthing matrix. Result: Henshaw used the technology and traces of Superman's DNA to return as a kryptonian cyborg with a grudge.
** The ComicBook/{{New 52}} incarnation of Kryptonite Man, Clay Ramsay, was an ordinary man who joined a SuperSoldier program after Superman tossed him out of his apartment for beating his wife.
** The New 52 version of Magog was a young boy whose family and friends were killed during ComicBook/{{Darkseid}}'s invasion of Earth. He blames Superman and Franchise/WonderWoman for failing to save them, and becomes a supervillain to take his revenge.
* ''Franchise/SpiderMan'':
** [[ComicBook/{{Venom}} Eddie Brock's]] hatred of both Peter Parker and Spider-Man for ruining his life (some people just like to blame someone else) and a chance encounter with the alien symbiote (which had just been "dumped" by Pete and was bitter about it) resulted in the creation of Venom, who would clash with Spidey for decades. Brock's HeelFaceTurn came from finally admitting it was his own fault and not Peter's.
** The Venom symbiote itself is often portrayed as having been consumed with resentment (and abandonment issues) after Peter rejected it, going on to influence several hosts into lives of villainy and Spider-Man harassment.
** Roderick Kingsley, alias, the original Hobgoblin is an indirect example: he got his start when he was tipped to the location of the Green Goblin's old gear when a minor criminal that Spider-Man allowed to get away stumbled across the stuff. Before that, the Hobgoblin was a CorruptCorporateExecutive who Spider-Man saved from a supervillain that was trying to get revenge on Kingsley. Kingsley was determined not to be so vulnerable again, which made him look for ways to increase his power and meet the criminal who found the Green Goblin's equipment.
** Green Goblin II/Harry Osborn also counts, as he became a villain to [[AvengingTheVillain avenge his dad]] (although one could easily argue that it was his father's actions that truly created the second Green Goblin).
** ''Film/SpiderManHomecoming'': An inverted example. Vulture exists because [[ComicBook/IronMan Tony Stark]] endangered his business, not because of anything Peter did, but this still fits with Tony's habit of accidentally creating villains (see below).
* ''Comicbook/FantasticFour'':
** [[ComicBook/DoctorDoom Victor von Doom]] was Reed Richards' college roommate. Richards corrected one of Doom's experiments; Doom, furious, switched it back to the way it was, then it exploded, scarring Doom's handsome face. Naturally, [[NeverMyFault Doom blamed Richards]].
** The Mad Thinker's Awesome Android and Modulus are both the result of (mis)applications of Reed Richards's research.
* ''ComicBook/PowerPack's'' ArchEnemy, Douglas Carmody (aka the Bogeyman) is a pretty good example of this. While he's pretty villainous when you first see him, he soon tries to hunt down and murder the kids outright, later joining up with the anti-mutant group The Right in hopes of going after them. The reason? The Power Pack blew up the power plant that he thought was going to make him a billion dollars and make him a household name. Okay, so he had no idea that it would blow up the Earth instead...
* ComicBook/BlackCanary acquired one in ''ComicBook/GreenArrow[=/=]Black Canary''. A concert violinist she accidentally deafened through an injudicious use of her canary cry has returned as the sound based supervillain Discord. Oddly, a [[UsefulNotes/TheSilverAgeOfComicBooks Silver Age]] Franchise/{{Justice League|of America}} story had musician Anton Allegro become a villain because he'd been accidentally deafened by ''Green Arrow''.
* ''Franchise/SonicTheHedgehog'':
** In the United Kingdom's ''ComicBook/SonicTheComic'', (which was based on the old Mobius/Kintobor backstory that's since been brushed away to line up with the Japanese plot), the story arc loosely based on ''VideoGame/SonicCD'' and ''VideoGame/KnucklesChaotix'' had Sonic going back in time and deliberately causing the accident that turned kindly Dr. Kintobor into Dr. Robotnik. In the altered timeline where the accident never occurred, the Brotherhood of Metallix conquered Mobius and couldn't be stopped- in the real timeline, Robotnik worked on the Metallixes, too, and thought to give them a mass-self-destruct function.
** This comes back to bite Sonic in ''Webcomic/SonicTheComicOnline'' when the rest of Mobius finds out about Sonic turning Kintobor into Robotnik leading to BrokenPedestal.
** This may have been recycled from a very similar storyline in the earlier British Sonic novels. Robotnik succeeds in taking over Mobius, but Sonic uses TimeTravel to stop him ever being transformed from Dr Kintobor, but then a different set of villains steal the Chaos Emeralds in an attempt to infect the Big Bang and therefore the entire universe with Chaos, so Sonic has to stop his earlier self from stopping Robotnik's transformation, as the transformation safely flung the Chaos Emeralds across Mobius out of their reach. In the process, he ends up creating a chaos-infected version of ''himself'' called [[SdrawkcabName Cinos]].
* The insane ComicBook/CaptainAmerica from the 1950s started out as a fanatical admirer of then-missing Steve Rogers, driven insane by [[PsychoSerum a faulty attempt]] to replicate Steve's SuperSerum.
* The ''ComicBook/{{Transmetropolitan}}'' arc "Freeze Me with Your Kiss" features a revenge scheme involving several people wronged in the past by AntiHero Spider Jerusalem. Also, part of why [[BigBad the Smiler]] is elected [[PresidentEvil president]] is that Spider initially supported him over his similarly corrupt opponent as seemingly the lesser of two evils.
* ''ComicBook/IronMan'':
** The villains the Crimson Dynamo and Titanium Man got their start because the DirtyCommunists decided they needed their own counterparts to Tony Stark's "bodyguard." Later armored entities such as the Iron Monger and Firepower were created at the behest of Stark's [[CorruptCorporateExecutive corrupt business rivals]], Obidiah Stane and Edwin Cord, respectively. Stane and Cord would both see this trope [[CreateYourOwnHero inverted]] right back on them, however, as their actions directly led to the birth of a "new" Iron Man each time. In Stane's case, it was [[VillainBall his desire to see Iron Man destroyed, and Stark completely crushed]], even though at the time Stark was willing to let Stane be and start anew. Kidnapping Stark's past associates, attacking Iron Man with his "Circuits Breaker" weapon, and then having Stark's new company bombed, killing Morley Erwin in the process, drove Stark to don his newly-completed Silver Centurion armor and fly out to Long Island to confront Stane, forcing the latter to don his still-untested Iron Monger prototype. [[CurbStompBattle It didn't end well for Stane]], who [[DrivenToSuicide killed himself]] rather than see Stark gloat over him.
** In the wake of Iron Man's rogue actions during the ''Armor Wars'' storyline, the Pentagon commissioned Cord to create Firepower to destroy the renegade Avenger. However, once this was done, Cord refused to turn his new toy over to the Feds (threatening to blackmail them with a press release about Firepower - a heavily-armored suit with a ''[[NukeEm tactical nuke]]'' - being designed for ''[[ThereIsNoKillLikeOverkill riot control]]''), and turned Firepower loose on Stark Enterprises' assets instead. Stark, who'd been willing to leave Iron Man "dead", created a "new" Iron Man that promptly [[CurbStompBattle tore Firepower apart]].
* ComicBook/TheUltimates in the ''ComicBook/UltimateMarvel'' universe were at least partly to blame for the creation of the supervillain group the Liberators, and definitely to blame for the first Hulk rampage through New York. It ultimately turns out that the advent of the mutant was a direct result of the superhuman arms race.
* In ''ComicBook/{{Legacy}}'', Obi-Wan Kenobi is inadvertently responsible for [[spoiler: A'Sharad Hett]]'s transformation into Darth Krayt. Nice going, Ben. You'd think training Vader would have been enough.
* Any number of AllYourPowersCombined supervillains. Amazo, Paragon, the Composite Superman, the Super-Adaptoid, etc.
* ''ComicBook/TheAvengers'':
** [[ComicBook/AntMan Hank Pym]], the Avenger alternately known as Ant-Man, Giant Man, Goliath, Yellowjacket, Dr. Pym, and the Wasp, built the robot ComicBook/{{Ultron}}, which went on to become one of the Avengers' most powerful, persistent, and deadly foes.
** Inverted by Ultron himself, who has created {{A|rtificialIntelligence}}Is on several separate occasions, every single one of whom turned on him. Comicbook/TheVision, Jocasta, and [[ComicBook/{{Runaways}} Victor Mancha]] all three became heroes and joined the Avengers. Also played straight with Alkhema, the second wife Ultron created (this one from Comicbook/{{Mockingbird}}'s brain patterns). Rather than wanting to wipe out humanity all in one go, she wanted to kill them all slowly and painfully, and individually if she could. She quickly betrayed Ultron to the Avengers. Pym may get a lot of flack for building Ultron, but at least he's managed to build robots that didn't turn on him.
* In UsefulNotes/{{the Silver Age|of Comic Books}}, the Reverse-Flash gained access to the secrets of super-speed in the future because Barry Allen placed one of his [[Franchise/TheFlash Flash]] costumes in a time capsule. More recent continuities have the Reverse-Flash starting as an insane fan of Barry's or, more recently, deriving all of his powers directly from Barry's mere existence, as Barry is now the source of all supersede. UsefulNotes/{{The Modern Age|OfComicBooks}} Reverse-Flash became who he is because of Wally West not helping him. Hunter Zolomon was crippled by Gorilla Grodd and asked Wally to use time travel to prevent the incident. Wally refuses, since this would damage the time stream, and Hunter screws with Wally's cosmic treadmill, and poof, a new EvilCounterpart was born.
* ''ComicBook/{{Invincible}}'':
** Invincible accidentally caused genius multiverse-walker Angstrom Levy's attempt to fuse with all of his alternate selves to backfire, and Levy has become one of Invincible's most determined foes as a result.
** Likewise, Powerplex only became a supervillain to avenge himself on Invincible for the death of his sister during one of Invincible's brawls (specifically, Invincible was punched through a building she was inside of, causing it to collapse). Powerplex then killed his wife and infant son by accident while fighting the {{Nigh Invulnerab|ility}}le hero, fueling further revenge.
* ''ComicBook/TheBoys'':
** Billy Butcher became a {{cape buster|s}} because a superhero raped his wife, and the resulting infant tore its way out of her body. From the audience's point of view he's an AntiHero, but in-universe from the supers' perspective he's a villain.
** Wee Hughie was a regular socially awkward everyman until his first love interest was smashed into a red paste by a superhero.
* ''ComicBook/SinCity'': While The Yellow Bastard was already a bad guy, John Hartigan's attacks led to the Yellow Bastard turning into a disfigured freak, became just a little more unhinged, and it made him take revenge later in life.
* Zig-zagged in ''ComicBook/LesLegendaires'', where the protagonist Razzia, who was initially an innocent pacifist kid, became a vengeful barbarian villain as well as TheDragon to [[EvilSorcerer Darkhell]] after his village was seemingly destroyed by the heroic 1000 Wolves Army for no reason. Later however, [[spoiler:his dying sister Sheyla reveals him it was Darkhell who destroyed the village and blame the 1000 Wolves for it. Enraged by the betrayal, Razzia turned against Darkhell and joined the Legendaries, becoming part of the sorcerer's worst enemies]].
* Aubrey Jason from ''ComicBook/AstroCity'' would have been content to remain a normal human member of Pyramid, but was pushed into acquiring superhuman power to protect himself from the relentless pursuit of the Williams brothers and their RoaringRampageOfRevenge.
* ComicBook/{{Cable}} inadvertently created ComicBook/{{Apocalypse}} during his attempt to prevent his transformation into a world conqueror. It involved time travel, of course.
* ''Comicbook/{{PS238}}'' plays this more directly than most examples--[[RealityWarper Toby]]'s first supervillain turns out to be a person he [[http://ps238.nodwick.com/comic/02012012/ accidentally brainwashed into robbing a bank]]. He was empowered by [[OrderVsChaos an angel of Order and a demon of Chaos]] [[GodKartingWithBeelzebub working together]], and as a result he can't use his powers for anything but flying without something random like that happening too.

[[folder:Fan Fic]]
* In ''FanFic/KingsOfRevolution'', the Black Knights rebel against the Time-Space Bureau in addition to Britannia. Why? [[spoiler:Because the High Council not only created [[Amine/NanohaStrikerS Jail Scaglietti]], but also the fanfic's BigBad who is ''assisting'' Britannia.]]
* Calvin creates a villain in ''Fanfic/CalvinAndHobbesTheSeries''. His attempt to get more TV channels ends up unleashing [[{{Technopath}} Electro]] upon the world.
* The ''FanFic/PonyPOVSeries'':
** Back when she was still in her AGodAmI phase (before mellowing out a ''lot''), Luna gave Tirek the Rainbow of Darkness so he could try and prove his love to her. During her and Celestia's reign, Tirek returned to life and ended up having a battle with her for dominion over the night.
** [[spoiler:Celestia didn't make Discord a monster, but she taught him how to plan and ultimately accidentally helped him discover he was a sadist. She also left him to be punished by his family for helping her bring the Windigos to Equestria, causing him to keep a grudge against her.]]
** [[spoiler:Dark World!Discord ended up creating [[GreaterScopeVillain Nightmare Eclipse/Paradox]]. She was originally Twilight Sparkle until he turned her into Twilight Tragedy and put her through a living hell for a thousand years. When she finally broke free, she [[StartOfDarkness snapped]] and decided to ''invoke'' [[SuperpoweredEvilSide Nightmarification]] to become Nightmare Purgatory and brutally kill him in revenge. By that point, she's [[HeWhoFightsMonsters been so consumed by her thirst for vengeance]] that she turns her plan to SetRightWhatOnceWentWrong into a GroundhogDayLoop IronicHell for Discord, becoming the OmnicidalManiac she is now.]]
* ''Fanfic/CyclesUponCycles'': Due to ''VideoGame/StarCraft'''s Koprulu Alliance's actions, by the time the events of the ''VideoGame/MassEffect1'' roll around, Saren's army not only consists of Geth like in canon, [[spoiler:but also Batarians who resent the Alliance for nearly eradicating them for attempting a slave run during First Contact and Krogan remnants who despise the Zerg for assimilating the majority of their race (willingly, mind you), viewing the new Krogan as abominations]].
* ''FanFic/TheBridge'' has a rather bizarre example of one villain making another. Over three hundred years ago, [[OmnicidalManiac Grand King Ghidorah]] laid waste to Planet Xilian and pushed the inhabitants to the brink of extinction. In desperation, they created a kaiju of their own, [[spoiler: by splicing Ghidorah's genes with an Xilian volunteer to create]] [[BlackKnight Monster X]] and his berserk alternate form, [[SuperPoweredEvilSide Kaizer Ghidorah]]. While Grand King Ghidorah is a SmugSuper, Kaizer Ghidorah is one of the few beings he's genuinely afraid of.

[[folder:Films -- Animation]]
* Syndrome from ''WesternAnimation/TheIncredibles''. As a boy, his hero-worship led him to try to become Mr Incredible's {{sidekick}}, but Mr Incredible brushed him off. Syndrome then decided to get his recognition by designing a robot to kill Mr. I. [[SelfServingMemory That's what Syndrome would want you to think]]. Actually, he was rejected for incompetence ([[SpannerInTheWorks he interfered in a fight against Bomb Voyage]]; Bomb Voyage destroyed a building floor, successfully stole what he wanted, escaped, almost killed Syndrome and even Mr. Incredible barely made it through the whole thing without a scratch). He didn't take it well.
* Double subverted in ''WesternAnimation/{{Megamind}}''. After defeating his old nemesis and realizing VictoryIsBoring, Megamind tries to create a new ''hero'' to fight, but said person ends up becoming a worse villain than Megamind ever was.
** Also, Metro Man is partially responsible for turning Megamind into a villain. He knocked Megamind's ship into a prison, causing him to be raised by criminals. He also picked on Megamind in school. [[spoiler: However, by refusing to come out of retirement to fight the new villain, he forced Megamind to take responsibility for his actions, which finally pushed him into his HeelFaceTurn.]]
* Bowler Hat Guy is actually Lewis' roommate Goob who has grown up hating Lewis because he slept through a baseball game (thus failing to catch the ball where his team would have won if he did) thanks to his losing sleep from Lewis' late-night tinkerings in their room, while Doris has been considered as a failed invention by future-Lewis. The two has then conspired to destroy Lewis' life in ''Disney/MeetTheRobinsons''.

[[folder:Films -- Live Action]]
* The '89 ''Film/{{Batman}}'' film had an exchange between Batman and the Joker where the Joker blames Batman for creating him, but Batman replied that years ago the Joker was responsible for [[SuperHeroOrigin killing his parents]], [[CreateYourOwnHero creating him]].
-->'''Batman:''' I made you, but you made me first.
** In any case, the Joker was already an evil mobster before Batman so Batman's role in his creation is limited.
* In ''Film/BatmanForever'', Edward Nygma was an employee at Wayne Corp who [[LoonyFan really looked]] [[HoYay up to]] Bruce Wayne. Bruce shutting down Nygma's twisted pet project is what drives him off the deep end, turning him into the Riddler.
* In ''Film/BatmanBegins'', Gordon warns Batman about escalation.
-->'''Gordon:''' We start carrying semi-automatics, they buy automatics. We start wearing bullet-proof vests, they buy armor piercing rounds.\\
'''Batman:''' And?\\
'''Gordon:''' And you're wearing a mask, jumping off rooftops. (shows him a [[CallingCard Joker card]]) Now, take [[SequelHook this guy]]...
* In ''Film/TheDarkKnight'', the Joker [[InvokedTrope invokes]] this, claiming that Batman's example was what inspired him to change his schtick from clown-themed bank robber to clown-themed avatar of chaos. But considering how much he lies to everyone else, it's probable that he's only saying this to get under Batman's skin.
-->'''Joker:''' Look at me. '''LOOK AT ME!''' ''(speaks to video camera)'' You see, ''this'' is how ''crazy'' Batman's made Gotham!
** Batman and Gordon created Two-Face in the same movie. [[spoiler: Dent warned both of them about the corruption in the Gotham police department but they were more willing to ignore them in lieu of the Joker and finishing off the mob. Gordon's own men ended up working for the mob and kidnapped him and Rachel Dawes, resulting in her death and his disfigurement.]] In a more cynical example, [[spoiler: if Batman had been a few moments late, Dent would've died in an explosion and Two-Face would not have been created. If he had been a few moments early, Dent wouldn't have been disfigured, would not have gone to the hospital, and would not have been driven farther over the edge by Joker]]. Additionally, if Batman had realized from the start that [[spoiler: Joker was lying, he would have [[AlwaysSaveTheGirl saved Rachel]], leaving Dent to die]].
* In the Independent Film ''Sidekick'', Norman (a nerdy comic book fan) discovers that Victor (a sleazy Wall Street Guy he knows) has latent telekinetic abilities. Norman tries to train Victor to develop his powers so he can become a real-life superhero, but (being a Wall Street Guy) Victor eventually decides to use his powers for evil instead, becoming Norman's arch-enemy. A comic book store owner friend of Norman's even remarks (under the false impression that Norman and Victor's story is a pitch for a comic book plot) that, although Norman has failed to make a good hero, it seems he did succeed in creating a killer villain.
* ''Franchise/MarvelCinematicUniverse'':
** Tony Stark/Iron Man has a real problem with this:
*** ''Film/IronMan1'', Obadiah Stane is an evil genius in his own right, but it takes technology stolen from Tony Stark to complete his Iron Monger armor. That said, it is Tony's careless neglect in running the business his father left him which allows many of his weapons to end up all over the world, directly contributing to considerable harm and indirectly leading to the creation of ComicBook/{{Quicksilver}} and the ComicBook/ScarletWitch in the ''Avengers'' films.
*** [[FridgeBrilliance At the same time]], this is pretty much inverted seeing how [[NiceJobFixingItVillain Stane was the one arranged the terrorist attack on Tony]] [[SuperHeroOrigin that led him to become Iron Man]], making his own actions the indirect cause of the Iron Monger's creation ''in the first place''. Basically, Stane pretty much came up with the idea only after his first plan failed and decided to figure out what exactly went wrong with it.
*** In ''Film/IronMan2'':
*** Ivan Vanko is inspired to become Whiplash by the revelation that Tony is Iron Man. [[spoiler: His real grudge is against Tony's dead father - if Tony had never been born - or had died before the end of the first movie - Vanko may not have engaged in any criminal activity whatsoever. If Vanko didn't know Stark was Iron Man, his revenge probably wouldn't have involved building a suit of armor. Then Vanko improves his energy whips using suggestions from Tony himself.]] And, Justin Hammer would presumably be a conniving weasel with or without Tony's influence, but if weren't for Stark/Iron Man, [[spoiler: he wouldn't have been trying to build suits of armor, or broken Vanko out of jail, or had access to the War Machine armor]].\\
Vanko was already a criminal, though, due to his own father's actions that got him deported with Tony just being the scapegoat for his own miserable existence. Tony does seem to be worried about supervillains being created from his technology and takes steps to prevent this, but Vanko already had the knowledge and genius to make an arc reactor without Tony's help (though the advice he gave did come back to bite him).
*** Additionally, North Korea (among other nations) is trying to build its own PoweredArmor. Fortunately, they're [[EpicFail failing epically]].
*** This is lampshaded in ''Film/IronMan3'': "We create our own demons." Killian's M.O. derives from Tony snubbing him at a party. It's also implied Tony's actions were the final straw for Killian to crack.
*** Additionally, Killian attributes the creation of the Mandarin to the increase of super human activity.
--->'''Killian:''' "Anyway, the point is, ever since that big dude with a hammer fell out of the sky, subtlety's kinda had its day."
*** ''Film/AvengersAgeOfUltron'':
*** After Wanda gives Tony a vision of the Earth wiped out by a second alien invasion, he and Bruce decide to create ComicBook/{{Ultron}} as a planetary defence system.
--->'''Ultron:''' Everyone creates the thing they dread.
*** Ultron then proceeds [[CreateYourOwnHero to create]] Comicbook/TheVision, [[spoiler:who kills him.]]
*** Tony is also why ComicBook/{{Quicksilver}} and ComicBook/ScarletWitch want to destroy the Avengers, because they were orphaned after a Stark Industries munition blew up their apartment block, killing their parents, while they were only spared because the one that would have killed them was a dud.
--->'''Wanda:''' We wait for two days for Tony Stark to kill us.
*** Tony's father Howard Stark is GenreSavvy enough to see this trope coming in ''Film/AntMan'' and defy it on the spot. When a furious Hank Pym resigns from SHIELD for ethical reasons, Mitchell Carson wants him detained. Howard nixes it.
---> '''Howard:''' He just kicked your ass, full-size. You really wanna find out what it's like when you can't see him coming? I've known Hank Pym for a long time, he's no security risk. Not unless we make him one.
*** ''Film/SpiderManHomecoming'' has Tony create the government agency Damage Control to clean up public areas wrecked by superheroes and villains after the [[Film/TheAvengers2012 Battle of New York]]. [[spoiler:This drives Adrian Toomes out of business and he becomes an arms-dealer in order to turn a profit. He steals most of the parts from Damage Control, which his crew turns into usable weapons.]]
** ''Film/CaptainAmericaCivilWar'': Helmut Zemo is [[spoiler: a grieving father and husband who wants revenge on the heroes because his family was killed during the final battle between the Avengers and Ultron]].
** Comicbook/{{Loki}} from ''Film/{{Thor}}'' has been lied to his entire life, and pushed aside for his older brother, while saving Thor's life many times in the process. All of this escalates, comes to light at exactly the wrong time, and winds up driving him over the edge and into the twisted version of the young man he used to be in ''Film/{{The Avengers|2012}}''.
** It is revealed in ''Film/{{Black Panther|2018}}'' that, during T'Chalka's reign, he [[spoiler: killed his own brother and abandoned his nephew. Said nephew grew up to be Erik Killmonger, who wants revenge against the Wakadans for his father's death.]]
* ''Film/JohnnyGuitar'' is an anti-authoritarian western which is about how a town hampered by cattle raids starts persecuting a group of outlaws who were unrelated to that crime, and in turn drives them to further villainy, creating a SerialEscalation of a CycleOfRevenge between both sides.
* In ''Film/KickAss'', Kick-Ass [[spoiler: kills Frank d'Amico, causing his son Chris (Red Mist) to become a supervillain]].
* ''Film/{{Tron}}'' and ''Film/TronLegacy''. In the first, hundreds of man-hours worth of programming, spearheaded by [[CorruptCorporateExecutive Ed Dillinger]] turned a chess program into something that was going to take over the [[UsefulNotes/ColdWar Pentagon and Kremlin]] in about a week out of boredom. The second flick was a literal case; Flynn created Clu 2.0 and gave him near-User level of power and a "create the perfect system" directive so he could run things while Flynn was in his own world. Unfortunately, Flynn forgot to install a failsafe or ethics...
* ''Franchise/{{Terminator}}'': This is how [[AIIsACrapshoot Skynet]], the franchise's BigBad, was conceived: The US military originally wanted a supercomputer designed to control the American missile defense network and to remove the possibility of human error and slow reaction time by guaranteeing a swift but highly effective response to enemy attacks. Skynet was activated by the military on August 4, 1997, and it began to learn at an extremely fast rate, gaining artificial consciousness in the process, and the panicking operators, [[OhCrap realizing its potential, quickly tried to pull the plug]]. But Skynet, perceiving this as an attack, came to the logical consequence that all of humanity would attempt to destroy it. In order to continue fulfilling its original programming mandates of "[[KnightTemplar safeguarding the world]]" and to defend itself against humanity, Skynet launched the nuclear missiles under its command at Russia, which responded with a nuclear counter-attack against the U.S. and its allies. Consequent to the nuclear exchange, over three billion people were killed in an event that came to be known as Judgment Day.
* In ''Film/TheAssassinationOfJesseJamesByTheCowardRobertFord'', Robert idolizes Jesse and believes that he can earn a position of glory at Jesse's side. When Jesse fails to live up to Bob's expectations (and outright mocks him at a few points), Bob decides to instead earn his glory by killing Jesse James. (The entire thing is BlackAndGrayMorality, but most of the contemporary public views Jesse as a folk hero and Robert as a villain for killing him.)
* ''Film/BlackScorpion'':
** The mayor in the second film ends up turning Dr. Undershaft into Aftershock when his men sabotage her invention. This repeats several times in the series with the mayor's crooked schemes creating several villains. Little wonder most of them want to kill him.
** Flashpoint is a tabloid photographer obsessed with discovering Black Scorpion's secret identity who is blinded by her energy ring, but his eyesight was restored by advanced laser surgery, making him one of the heroine's most persistent archenemies.
* As Neo receives his EnlightenmentSuperpowers at the end of ''Film/TheMatrix'', not only does he easily repel any attacks from Agents, but then chooses to bodily possess Agent Smith, causing him to explode. Neo's [[NiceJobBreakingItHero inadvertent creation]] of Smith the Virus creates an [[NiceJobFixingItVillain enemy so powerful, it will destroy both the Matrix and the real world]]--were it not for Neo's help.
* ''Film/{{Maleficent}}'': In what seemed to be a twisted act of mercy, Stefan [[spoiler: doesn't kill Maleficent instead chopping off her wings]]. This only served in creating his greatest enemy for years.
* ''Film/{{Looper}}'' reveals that during [[spoiler:Old Joe's attempt to kill the Rainmaker as a child, the resulting trauma would inspire Cid to become the Rainmaker]].
* M created the villain of ''Film/{{Skyfall}}'' when she [[spoiler:chose not to rescue him from captivity, forcing him to swallow a cyanide capsule that shredded his insides but didn't kill him]]. This adds to his ShadowArchetype nature, as the film starts with M risking Bond's life in the course of a mission, and he proceeds to get over the betrayal... eventually.
* ''Film/TheAmazingSpiderMan'':
** Peter says "I created him" in reference to the Lizard, having given Curt Connors the formula that transformed him into said villain.
** ''Film/TheAmazingSpiderMan2'' has Peter indirectly create the Green Goblin. When Harry Osborn, his best friend, requests Spider-Man's blood to cure his genetic disease, Peter refuses. This results in Harry injecting himself with the same venom that Peter was injected with when he was bitten by the spider that gave him his powers, which theoretically should work. However, Peter's father encoded the venom to only work with Parker DNA, so Harry turns into the Green Goblin. Worst still, Peter's blood could've worked too. At the very least, he could've offered to take a blood sample from Harry and ''test'' whether his own blood would be compatible.
* A villain to villain example in ''Film/PiratesOfTheCaribbeanOnStrangerTides''. The "One-Legged Man" is a threat to Blackbeard's own making. By stealing the ''Black Pearl'' and forcing Barbossa to amputate his leg, Blackbeard gave Barbossa the motivation to find and kill him.
* In ''Film/OzTheGreatAndPowerful'', the titular character is partly responsible for turning [[spoiler:the naive but good witch Theodora]] into the AxCrazy Wicked Witch of the West, who rejects his offer of redemption at the end. While, technically, it was [[spoiler:her sister Evanora]] who turned her evil, Oz's actions ([[spoiler:flirting with her like he does with any girl]]) help push her over the edge.
* In ''Film/{{Scanners}}'', [[spoiler:Dr. Paul Ruth is largely responsible for turning Revok into an evil scanner in the first place. He gave his children psychic powers to begin with by experimenting on his own family with untested drugs, and subsequently abandoned both his children. He let Revok be locked up in an insane asylum rather than help him, causing him to develop a supremacist complex and wanting scanners to rule the world. The plot starts as Ruth tries to use the other child he rejected as a weapon against Revok]].
* Played with in ''Film/XMenFirstClass''. It's the BigBad who creates the villain, not TheHero. {{Lampshade|Hanging}}d [[spoiler:in Shaw's final monologue, and in Erik's references to himself as Frankenstein's monster]].
* ''Film/{{Unbreakable}}'': The TwistEnding reveals that [[spoiler:Elijah]] purposefully created ''himself'' by becoming a mass murderer criminal mastermind.
* ''Film/Ghostbusters2016'': Abby's and Erin's book on the physics of the paranormal is what [[spoiler: Rowan the janitor]] consulted to invent ghost-summoning mechanisms.
* ''Franchise/StarWars'': ''Film/TheLastJedi'' reveals that [[spoiler:Kylo Ren/Ben Solo]] is this for Luke Skywalker. [[spoiler:Luke sensed Snoke and the Dark Side tempting Ben and tried to discern his future while he was sleeping. When he foresaw Ben causing death and destruction, he reflexively grabbed his lightsaber and, for the briefest of moments, seriously considered [[ShootTheDog killing Ben to prevent numerous deaths]]. He almost immediately decided against it, but Ben woke up and [[PoorCommunicationKills only saw his mentor holding a lightsaber, seemingly poised to strike]]. A terrified Ben proceeded to embrace the Dark Side, grab his followers (the Knights of Ren), and destroy Luke's new Jedi Order.]] Luke is rightfully guilt-ridden and miserable over the fact that [[spoiler:a single moment of fear ended up destroying not only his chance at saving Ben/Kylo, but also the first Jedi temple built in decades if not centuries]].

* In ''Literature/TheDescendants'', the titular heroes inadvertently did this (at least in the eyes of Gundown and Slicer) when a random drug dealer they caught made bail and carjacked Slicer, dragging her behind the car he stole for three blocks. She (and her brother) felt it was their fault for not just killing the dealer.
** More recently, the Joykiller has decided that his goal is to [[spoiler:[[http://www.descendantsserial.paradoxomni.net/the-descendants-96-kill-hope-chp-1/ kill Hope]] because he feels she does too much good with her healing. Ironically, she feels the exact opposite]].
* In the ''Franchise/StarWarsExpandedUniverse'', the Jedi Order inevitably ends up creating the Sith Order. Each time the Sith are wiped out, some Dark Jedi, recently separated from the Order, finds Holocrons left by a previous Sith Lord and the Order is born anew. The worst part is that this cycle has occurred over ''half a dozen times''.
** Ajunta Pall creates what is presumably the original Sith order after being kicked out of the Jedi Order.
** Freedon Nadd, having left the Jedi order due to massive ego and rampant paranoia, finds the holocron of one of the old Sith Lords, and resurrects the order.
** Ditto for Exar Kun, who finds other Sith Holocrons and resurrects the Sith order.
** Revan breaks off from the Jedi to form a new Sith Order - in order to fight the remains of what he calls "the true Sith".
** Revan's former Jedi Master, Kreia, leaves the Jedi to find out why her apprentice turned. She makes her own mini Sith order. Ironically, her goal was to destroy the Force itself, as in a fit of GenreSavvy, she saw that as long as the Jedi existed, there would be a Sith order, and that their conflicts would inevitably doom the galaxy. So she sought to eliminate both.
** Darth Desolous ditches the Jedi because he thinks the Sith are cooler. Cue mini Sith order on his homeworld.
** Darth Ruin leaves the Jedi, starting the order ''again'' and begins the New Sith Wars.
** At the battle of Ruusan, the Jedi were [[ChildSoldiers shoving lightsabers into the hands of small children]] and sending them to slaughter. They also deemed the native "Bouncers" as too dangerous to keep alive because of the thought bomb. Well, one of those Force Sensitive kids sees her Bouncer friend killed by Jedi right before her horrified eyes. Congratulations! They just created Darth Zannah! Thus, the sole survivor of the Sith Order has the apprentice he needs to rebuild from scratch.
** And then, with Luke Skywalker having destroyed both master and apprentice of the Sith, you'd think it's over, right? Well... No. There's a Jedi Purge Survivor that starts a Sith order that would rise to power 100 years later. And Jedi from Skywalker's new Jedi Order jumping ship (one in particular who is even related to him!) Luke has angst about this trope, wondering if he's not training Jedi the right way, but he does try hard; most villains he trained went bad entirely on their own, after they left him. However, there ''was'' [[Literature/TheNewRebellion Brakiss]], who was an Imperial spy who was BecomingTheMask and really starting to trust Luke. Luke trusted him too and thought he'd completely make a FaceHeelTurn, and put him through a test of his spirit just like he'd do to any of his other students... and it was too much for Brakiss to take.
** And then there's this little stroke of brilliance from ''Literature/JediApprentice'', Obi-Wan and Qui-Gon's backstory series. So, the Jedi council has this problem kid, Xanatos. Too much anger and whatnot. His Master believes in him, but the Council doesn't. And they decide that hey, they're not sure they can trust him, they need to put him to the test. So they send him and his Master to intervene in a conflict where his ''dad'' is TheManBehindTheMan, and everyone knows it, in the hopes that he'll screw up and they can boot him out. Well as it turns out, the plan works [[GoneHorriblyRight a little too well]]. Xanatos {{Face Heel Turn}}s, his Master is forced to kill his father, and he swears bloody revenge on the Temple, going on to become a CorruptCorporateExecutive and ManipulativeBastard out for Jedi blood, who spreads slavery and death wherever he goes, and targets Qui-Gon (his ex-master) and Obi-Wan at every turn. {{Nice Job Breaking It Hero}}es.
* If there's any conciliation to the Jedi's ability to create their own worst enemies, it's that the Sith are just as good at it. The person most likely to kill a Sith isn't a Jedi - it's their own apprentice. Just around the movie timeline, Darth Tenebrous killed his own master, and was in turn killed by his apprentice Darth Plagueis. Plagueis was eventually murdered in his sleep by his apprentice, Palpatine, who was tossed down a bottomless pit a few decades later by ''his'' apprentice, Darth Vader.
** Nor is Sith tendency to create their own nemeses confined to villains. Darth Vader's own son blows up the Death Star and eventually defeats his father, and his daughter plays a massive role in the Rebellion. Darth Vader's apprentice, [[VideoGame/TheForceUnleashed Starkiller]], is responsible for founding the Rebel Alliance. ''Anakin Skywalker's'' apprentice, [[WesternAnimation/StarWarsTheCloneWars Ahsoka Tano]], becomes [[spoiler:"Fulcrum", a major organizer in the Rebel Alliance]]. Even the droid Vader built as a child, C-3PO, would become one of the heroes opposing him.
* ''Literature/HarryPotter'':
** Dumbledore in the backstory, [[spoiler:enabled Grindelwald in his exile from Durmstrang, both of them drawing up several plans and ideas to TakeOverTheWorld including Grindelwald's BadassCreed, "For the Greater Good" which Dumbledore came up with. This bites him hard and he later tackles Grindelwald on his own]].
** Sirius Black in the 5th Book is under virtual house arrest in his family home which he hates and is run by a nasty, bitter house elf who parrots the racist ideas of the family which Sirius wanted to run away from. Despite knowing that house elves have BlueAndOrangeMorality and have to obey their masters, Sirius is indifferent to his plight. [[spoiler:This makes Kreacher pass along crucial information to Voldemort (only possible because Sirius carelessly gave an order that allowed Kreacher to leave the house), an action which led to Sirius' eventual MistreatmentInducedBetrayal induced death.]]
** Likewise Barty Crouch Sr. a KnightTemplar wizard who allowed wizards to use extreme methods to combat Voldemort was so driven and career focused that he neglected his son [[spoiler:who became a Death Eater and later committed {{Patricide}}]].
** In the extended backstory and comments by WordOfGod, its suggested that James Potter's bullying of Severus Snape only intensified his interest in Dark Arts as an outlet to gain revenge. His arrogance and UnderestimatingBadassery of Peter Pettigrew also played a part [[spoiler:in the latter's betrayal and his eventual death]].
* [[Literature/MonsterHunterInternational Monster Hunter Alpha]] has this in the third book. [[spoiler: Earl bit one of his teammates by mistake while she was pregnant. The resulting child was not only quarter-siren but a werewolf as well, and had a lifelong hatred of the one who forced it upon him.]]
* Very much the case in ''Literature/{{Animorphs}}'' with David, the SixthRanger turned SixthRangerTraitor. Though introduced from the start as a kid with a bit of an attitude, he at first tries fitting into the team and making the best of things. It's not until he's given the cold shoulder by everyone, forced to sleep in a cold barn and threatened with death by Jake that he decides to betray the team. At that point it's hard to blame him.
** Even worse was Visser Three -- he wouldn't have been able to take an Andalite host and become the Abomination without Elfangor's unintentional aid.
* In ''SevenSorcerers'' by Caro King, the titular sorcerers are responsible for [[FromNobodyToNightmare transforming]] Arafin Struud from an ordinary human into the BigBad that he is by [[spoiler: first letting him drink a potion that makes him fully immortal, and then torturing and mutilating him horribly to see [[GoneHorriblyRight just how well]] the potion works. And then trying to make amends with a simple "Sorry".]]
* Creator/ChristopherMarlowe's ''Theatre/TheJewOfMalta'', while not free of the anti-semitism of its premise, at the very least has a Jewish protagonist as a VillainProtagonist (where ''Theatre/TheMerchantOfVenice'' has a Jewish BigBad and supporting character). Barabbas also makes it clear that his actions are inspired by racism and oppression at the hands of Christians and Muslims.
-->'''Barabbas''': ''Why, I esteem the injury far less,\\
To take the lives of miserable men\\
Than be the causers of their misery.\\
You have my wealth, the labour of my life,\\
The comfort of mine age, my children's hope;\\
And therefore ne'er distinguish of the wrong.''
* In ''Literature/{{Worm}}'', the [[NominalHero "hero"]] [[spoiler:Sophia Hess/Shadow Stalker]] was not only one of the many whose treatment of [[spoiler:Taylor/Skitter]] drove her to villainy, but was directly responsible for causing said villain's TraumaticSuperpowerAwakening in the first place. In a more direct example, Armsmaster's poor handling of [[spoiler:Taylor]]'s offer to be an undercover hero in one of the city's supervillain gangs also played a major factor in deciding to be a supervillain (who would humiliate Armsmaster and his colleagues on multiple occasions) for real.

[[folder:Live-Action TV]]
* ''LiveActionTV/{{Arrow}}'':
** It turns out that Season 5 BigBad Prometheus [[spoiler: a.k.a. Adrian Chase]] came to be because Oliver killed his father during the events of Season 1, prompting Prometheus to want to punish Oliver/Green Arrow for it and show how Oliver infects anyone he knows. Prometheus was also trained by [[spoiler:Talia al Ghul]], whose father was also killed by Oliver.
** In Season 6, Cayden James was little more than a hacktivist, fighting against corporations and trying to have a relationship with his son. Then A.R.G.U.S. agents arrest him before he can attend his son's basketball game and treat him like a terrorist (even though all he did is make sure that a pharmaceutical company doesn't profit from illegal activities). Then he finds out that his son has been killed, and he snaps. It takes [[spoiler:Ricardo Diaz slipping him a doctored video of the Green Arrow accidentally killing his son]]. Nice job, A.R.G.U.S.!
* In an episode of ''Series/BarneyMiller'', Christopher Lloyd plays a man who blames Captain Miller for ruining his life and turning him to a life of crime after Patrolman Miller stopped him years earlier, making him miss and lose an important job interview. His crime -- Littering: Dropping a hotdog wrapper on the ground in Central Park.
* ''Series/{{Batman}}'': The 1960's TV show. In the BackStory to episode "Instant Freeze", Batman turned Dr. Schiml into Mr. Freeze by accidentally knocking a beaker of Instant Freeze on him, [[http://www.youtube.com/watch?v=bjXAAS3VpeY which warped his mind and turned him to a life of crime]].
* ''Franchise/{{Buffyverse}}'':
** The Trio was created because of Buffy. Admittedly, Jonathan (who would have killed himself if it weren't for her, the UngratefulBastard) and Andrew were just in it for the taking over Sunnydale part, but Warren wanted to kill Buffy due to her tracking down the origins of his sexbot April which caused his girlfriend to leave him (what some fans saw as mean, but actually was done in order to save people from his romance and sex slave gone overboard, actually long past his true MoralEventHorizon). Over time he becomes worse and worse, going from jerkass to evil Jerkass to homicidal evil Jerkass to murdering evil Jerkass to his S8 appearance as a genocidal skinless Jerkass.
*** Warren is both on the creating and created side, really. He attempts to murder Buffy [[spoiler: and accidentally kills Tara,]] sending Willow, one of the most powerful witches in existence, into a RoaringRampageOfRevenge that including Warren being [[FlayingAlive flayed alive]]. However, Warren survived the skinning due to another witch, Amy, who had turned evil out of jealousy for Willow having so much power without having to work at it (so Amy's another example). Warren then changed his hatred for Buffy into hatred for Willow.
** We have Holtz, who wants Angel dead for what he did as Angelus, killing the man's family and forcing him to dust his own daughter.
** Wesley was responsible for turning Faith to villainy by having her locked away because he didn't trust her, even though the gang was trying to help her get better.
** Angel, having spent 200 years as a psychopathic murderer, has a few of these, usually vampires he sired, who either want revenge, or Angelus back killing. (Most of his human enemies from that era are of course long dead either by his own hand or by old age; Holtz is the exception as he was brought to the modern era via TimeTravel.) For example, Drusilla (Angelus visited upon her every mental torment he could devise, ending up with...well, a pretty deranged supervillainess, all told), Spike (sired by Drusilla, but Angelus taught him how to be evil), Penn (from "Somnambulist") and Sam Lawson (from "Why We Fight"). James from "Heartthrob" is a special case - while Angel didn't sire him (at least, it's never said), he tries to kill Angel and Cordelia because Angel stakes his OneTrueLove. There's also Lindsey [=McDonald=], who was introduced as a AmoralAttorney, but for whom Angel makes their battles [[ItsPersonal personal]] when Angel chops off his hand at the end of Season One.
** Spike has created at least one villain: Dana, from the episode "Damage". This one is albeit only indirectly Spike's fault. Dana was kidnapped as a little girl by a human psychopath, implying sexual assault. Later in life, Dana's Slayer visions (allowing her to have psychic dreams and access to the memories of former Slayers) activate. Since Spike has chased around and killed two Slayers he's in a lot of the Slayer memories, leading Dana's damaged mind to substitute him for her actual childhood abuser. When it was all done he even hypocritically told her "I've done a lot of horrible things, just not to you."
** Then there was Giles in "The Dark Age", who had to face the demon he summoned as a teenager that was now killing his former friends. Since a lot of characters of Series/BuffyTheVampireSlayer and Series/{{Angel}} were TheAtoner, or at least had a DarkAndTroubledPast, this trope turned up a ''lot''.
** Buffy unknowingly created Angelus, season 2's BigBad, and he never tired of reminding her about it.
* ''Series/{{Chuck}}'': Season 3 reveals that [[spoiler: Sarah killed the wife of Daniel Shaw years ago as her final exam. After finding this out, Shaw betrays the CIA and joins The Ring to avenge his wife's death leading him to try to drown Sarah (though she was rescued by Chuck) and [[YouKilledMyFather killing Chuck's father]]. Had the CIA not assigned Sarah to kill Shaw's wife for her training, Shaw would have probably remained a member of Team Bartowski making Sarah responsible for his FaceHeelTurn]].
* ''Series/{{Dollhouse}}'': Has [[spoiler: Echo, the main character]] being an Create Your Own Hero who takes down the people who forced her into becoming a doll. Echo has [[Creator/SummerGlau Bennett]], who she accidentally created as Caroline, making a HeroicSacrifice [[LesYay for her]] (the aforementioned being made a doll) which was sadly seen as abandonment, causing Bennett to hate Caroline/Echo for abandoning her and making her lose her arm.
* ''{{Series/Firefly}}'': In a bit of Role Reversal, [[TheEmpire The Alliance]] does this, cutting up River Tam's brain, turning her into the insane, psychic, badass 16 year old PhlebotinumRebel that she became. In other news, Creator/JossWhedon REALLY loves this trope. It's in all of his works.
* ''Series/TheFlash2014'':
** While Leonard Snart has been a criminal since he was little, the most he does is robbery. In fact, he usually insists on not killing people [[PragmaticVillainy to avoid starting a manhunt]] (he actually has no compunction about killing). After being stopped by the "Streak" (Barry's original nickname), he becomes obsessed with one-upping him and manages to get his hands on Cisco's [[FreezeRay cold gun]]. He then thanks the Flash for helping him up his game. There's also a minor tidbit where Cisco's penchant for naming Barry's enemies gives Snart an idea to call himself "Cold", becoming a typical supervillain. He is one of the most recurring villains in the show, first coming back with his partner [[PyroManiac Heatwave]], and then adding his also sociopathic sister to the team.
** Savitar is [[spoiler:Barry's time remnant, created to stop Savitar (your head hurt yet?). After surviving the failed attempt to stop Savitar from killing Iris, unlike the other time remnants, the time remnant is [[ExpendableClone treated like crap]] by Barry and everyone else, not realizing that he was also hurting from Iris's death. So, he eventually decides to become a god, as gods can't be hurt. So, when he told Team Flash that he created himself, he was speaking the truth, in a way]].
** There are also a number of villainous metas, such as the Rival, who wouldn't have powers, if Barry hadn't created Flashpoint
** A number of metas blame Harrison Wells for their new condition. Farooq Gibran (AKA Blackout) accidentally kills his friends after becoming a meta, so he naturally goes after Wells to avenge them and nearly kills him. Later on, Griffin Grey goes after "Harry" Wells (the Wells of Earth 2) in the mistaken belief that he's the same Wells responsible for the particle accelerator explosion.
* ''Series/GameOfThrones'': Cersei Lannister does this a few times.
** Even ''she'' finally catches on the fact that her methods of raising Joffrey didn't pan out so well. Not to mention applying a little bit of incest in his actual creation.
** Blaming Tyrion for Joffrey's murder with no evidence and doing everything in her power to see him convicted drove him into the service of Daenerys. They may not have liked each other prior, but at least Tyrion didn't have any intentions of removing her from power.
** She learned in a hard way that giving power to religious fanatics is not a pragmatic thing to do, especially if you were bedding your brother and cousin.
* ''Series/HarpersIsland'': Sheriff Charlie Mills turns his wife's obsessive ex-boyfriend John Wakefield into a psychopathic serial killer by [[spoiler:having him beaten up and framing him for the attempted murder of a police officer. He serves 17 years of a life sentence for something he didn't do]]. He kills Sarah Mills as soon as he gets out and Sheriff Mills seven years later, in the present story.
* ''Series/{{Heroes}}'': In Season 3, it's revealed that Batman-like AntiHero Mr. Bennet had a hand in turning nerdy watchmaker Gabriel Gray into the series' {{arch|Enemy}}villain, Sylar. Specifically, Bennet (under orders from The Company) manipulated Gabriel into killing again, thus removing the last of his moral inhibitions and completing his transformation into Sylar, who would go on to cause no end of trouble for Bennet and his family.
** Not only was Sylar manipulated, he was actually about to hang himself, unable to cope with killing another person for his power.
** Also, in Season 2, Hiro's attempts to turn Adam Monroe/Takezo Kensei into a legendary hero (and get busy with Kensei's girlfriend) ends up pushing him from a goofy, drunken mercenary into the season's immortal, MisanthropeSupreme BigBad.
* Exaggerated and played for laughs in ''Series/TheIncreasinglyPoorDecisionsOfToddMargaret'' when Todd Margaret and Brent Wilks unknowingly make an enemy of [[spoiler:David Mountford]] [[DisproportionateRetribution when they are rude to him in bar]].
** In season 3, Todd believes [[spoiler:Dave, again]] is evil - suffice it to say due to the MindScrew-y nature of that season. It becomes a self-fulfilling prophecy as Todd torments him into becoming the man he imagined him to be.
* ''Series/{{Merlin|2008}}'': King Uther Pendragon manages to do this in his kingdom, when he orders a genocide of all magic users. He's consistently being attacked by magical people as a result, but [[KarmaHoudini he always manages to escape punishment and considers the attack evidence that magic is evil]]. This finally ends in the series 3 finale [[spoiler:when his daughter Morgana is revealed to have magic, takes over Camelot with an immortal army, and gives him a TheReasonYouSuckSpeech on his treatment of her people. This breaks him completely, and he spends the rest of his life as a fragile shell of his former self]].
* This is the origin of the Bugsters in ''Series/KamenRiderExAid''. They were programmed as villains in their respective video games and decided to take revenge against their creators after gaining sentience.
* ''Series/{{Revolution}}'': As revealed in [[Recap/RevolutionS1E3NoQuarter episode 3]], Miles was [[MentorArchetype the mentor]] to [[MookLieutenant Jeremy Baker]], and aided [[BigBad Monroe]] is starting the militia.
* ''Series/PersonOfInterest'': [[spoiler:Peter Collier]] joined the privacy terrorist group Vigilance after his brother was detained without charges for associating with [[VillainByProxyFallacy a man whose cousin had ties to a terrorist group]] - [[MistakenIdentity who ultimately turned out to be simply his AA sponsor with no terrorism ties]] - causing his brother to go into a downward spiral that resulted in his [[DrivenToSuicide suicide]]. The government's [[NeverMyFault complete lack of remorse for this screwup]] (it's even implied that the man responsible was promoted) sealed the deal.
* ''Series/SleepyHollow'': So far, all of the Horsemen of the Apocalypse were formerly people Ichabod and Katrina had angered for some reason. [[spoiler: Death a.k.a. Abraham van Brunt sold his soul after Katrina broke off her engagement to marry Ichabod, and Ichabod chose the exact worse time to tell him. War a.k.a. Jeremy Crane hates both his parents for abandoning him, but while this is reasonably justified in Katrina's case, Ichabod is blameless since he died before Jeremy was born.]]
* ''Series/{{Smallville}}'': While John Corben was actually turned into Metallo by Zod, he already had a hatred for the [[Franchise/{{Superman}} Red-Blue Blur]] after one of the criminals saved from a prison bus crash by the Blur murdered his sister.
* ''Series/StargateAtlantis'':
** Half-human[=/=]half-wraith hybrid Michael, the series' most frequently recurring villain, was originally created by the Atlantis Expedition in their attempts to create a virus to turn Wraiths into harmless, amnesiac Humans. Michael was quite pissed upon learning he had been manipulated by the team, and ''very'' pissed when the team's response to learning that their pet Human-Wraiths were turning back into full-blown Wraiths was to nuke em' all. Before this, there were indications that Michael had [[EvenEvilHasStandards standards]] and would have been willing to work with Atlantis, but too many betrayals [[ThenLetMeBeEvil turned him into a monster]].
** And though they didn't ''create'' the Wraith and the Replicators, they ''woke up'' the Wraith, who'd been dormant, and turned the Replicators into a scourge against humanity. The heroes programmed them to take out the Wraith; they decided the best way was to eliminate their food source -''humanity.'' BrainwashingForTheGreaterGood ''never'' works in SGA. The Atlantis crew has a ''very'' bad habit of both MoralDissonance and NiceJobBreakingItHero.
** The Ancients however created both the Wraith and the Replicators. And then failed to stop either.
* ''Series/StarTrekDeepSpaceNine'': The Cardassians did this twice. In full use of their Nazis [[RecycledInSpace IN SPACE]] tendencies, they annexed Bajor and brutalized it's population for fifty years in a manner reminiscent of occupied Poland. They ended up creating the Bajoran resistance, which Major Kira was a part of that eventually drove them off. Proving that they don't exactly learn from the past, when Federation colonies ended up in Cardassian space as per a new treaty, they immediately started treating them like they used to treat the Bajorans, and got the [[LaResistance Maquis]] for their trouble.
* ''Series/XenaWarriorPrincess'': Xena apparently obliviously did this to [[AxCrazy Callisto]], though this is before Xena's HeelFaceTurn. Callisto believes that until she becomes a goddess and goes back in time to the day her parents were killed. It turns out that the future Callisto was the one who murdered her own parents, but her dazed past self assumed Xena was to blame. Given the chance to undo her past, after an accident she instead made sure it happened, making it clear that one more NeverMyFault villain actually is the way she is by choice. She took her mother and her younger self into a barn to protect them. When he father (thinking that the strange woman is one of Xena's {{Mooks}}) tries to attack her from behind, she throws a dagger at him without looking. Realizing that she can't change the past, she reluctantly incinerates her own mother with a fireball. In a last-ditch effort, she tries to kill her younger self by setting the barn on fire, but the girl is saved, swearing vengeance against Xena.

* "Close Your Eyes (And Count to Fuck)" by Run The Jewels indicts the prison system as being a cause of this.
-->'''Killer Mike''': My solitary condition's preventin' conjugal visits
-->Though mainly missin' my missus, they keepin' me from my children
-->Conditions create a villain, the villain is given vision
-->The vision becomes a vow to seek vengeance on all the vicious
-->Liars and politicians, profiteers of the prisons
-->The forehead engravers enslavers of men and women

[[folder:Professional Wrestling]]
* If John Zandig hadn't rejected, or at least hadn't drug his feet on a deal with Rob Feinstein, who wanted to distribute Wrestling/CombatZoneWrestling shows after Wrestling/{{ECW}} went under, RF Video wouldn't have gone on to found Wrestling/{{Ring Of Honor}}. However, CZW ended up being much more like the "villain" of the piece after a double booking lead to a venue favoring ROH and knocking a CZW evening show back to the afternoon, leading Wrestling/ChrisHero to rage against the upstart promotion and being allowed to lead the rest of the CZW roster against it. Zandig would also join his roster in torturing ROH wrestler BJ Whitmer on their own show [[TrashTheSet while thrashing ROH's set,]] which lead to attempted retaliation at CZW's next event by Generation Next. While Wrestling/KevinSteen was already a problem, he used Zandig's treatment of Whitmer as a justification for using the CZW Ironman Title belt as a bargaining chip to get back into ROH...yeah, the list goes on.
* Want to know why Wrestling/RandyOrton became the psycho {{jerkass}} willing to blow up opponents with fireworks? Look no further than his mentor in Wrestling/{{Evolution}}, Wrestling/TripleH. Randy ''never'' got over their betrayal, and it became the defining moment of his career. It would haunt Hunter in the years to come, especially in 2009 when Randy assaulted the [=McMahon=] family, such as attacking Hunter's wife Stephanie and even ''punting '''Wrestling/VinceMcMahon''' in the head''. He even threatened to cancel ''Wrestling/WrestleMania'' that year, setting himself up as the BigBad of the event.
* Ultimately, Nanae Takahashi was able to prevent Wrestling/MercedesMartinez from causing too much trouble in Wonder Ring STARDOM. Of course Martinez was only there in the first place because Takahashi personally invited her, apparently unaware she [[MisplacedRetribution hadn't gotten over]] Sumie Sakai coming into her home promotion and taking her first title belt back to STARDOM's SpiritualPredecessor. That invitation was made to demonstrate STARDOM was challenging any woman in the ''world'' to try their best at taking the "World Of", which inspired Kimura Monster Gun to recruit Alpha Female from Germany during their bid to takeover the promotion. But the biggest threat a "global" invite brought was it also being an invitation for all other joshi feds on the proverbial doorstep to barge in, which resulted in Meiko Satomura using the publicity from winning the belt to start expanding Sendai Girls Pro, depriving STARDOM of the World Of for their first international tour, leading them to risk the 'Wonder Of' usually restricted to their own locker room in the USA.
* The World Wrestling Council in Puerto Rico and Dominican Wrestling Entertainment were among the initial members of the World Wrestling League when it started in 2012 and thus directly responsible for the creation of their chief rival when they decided to breakaway from it. In the beginning there was no competition because the League was very similar to the Wrestling/NationalWrestlingAlliance, focusing more on collaborating events to give fans matches they would not otherwise be able to see as well as introducing wrestlers and styles to new markets. But two years into this arrangement, WWL started acting like a promotion in its own right, testing the local waters of Bayamon with the [[HilariousInHindsight aptly titled]] "Insurrection" event, which put the spot light on very few wrestlers contracted by member promotions in favor of the talent from WWC's old rival, IWA Puerto Rico, that had remained free agents after its closure. WWC started to show particular resentment for WWL's more exclusive local shows in 2015 when Wrestling/ElPatronAlberto took a booking for ''Guerrera de Reyes'' in January and became the WWL Heavyweight Champion after WWC had been trying and failing to get him booked for their Aniversario tour the prior year. WWL responded to the two leaving it by running even fewer collaborative shows in favor of more designed to directly compete with the local companies more often. The WWC rivalry is by far the most pronounced of the two, as WWC was taking potshots at WWL [[WorkedShoot even when it was a member]] and the {{take that}}s between the two only escalated after business was off but WWL's promotion of their Dominican television deal in October of that same year suggested it was not just WWC they had in their sights.
* Alex Shelley started Search And Destroy to bring Ring of Honor back to its roots, centered around young wrestlers pushing each other to new heights in ''honorable'' contests. The group was to serve as an alternative to The Kingdom, CHAOS, Wrestling/BulletClub, etc to show the youth backstabbing, cheating, ambushes and the like were not necessary for success but the group he, Chris Sabin and first recruit Jay White defeated were The Cabinet. The Cabinet themselves were about taking ROH back to its roots, to "make wrestling great again", but they were fighting the increased family friendly nature and corporate structure of the company, as well as wrestlers perceived as unmanly. Shelley's mission statement after the victory reignited Kenny King, Rhett Titus and Caprice Coleman's resentment towards ROH's newer, younger wrestlers, with the possible exception of Shane Taylor, who they recruited to send all the others out of ROH with injuries as The Cabinet became The Rebellion. Among The Rebellion's victims were two more Search And Destroy recruits, 2015 and 2016 Top Prospects Donovan Dijak and Wrestling/LioRush. Search And Destroy would force The Rebellion to disband a ''Best In The World'', but the damage done to them could not be undone.

[[folder:Tabletop Games]]
* A part of the background for ''TabletopGame/{{Warhammer 40000}}'' is that the [[CivilWar Horus Heresy]] ultimate erupted because the Emperor consistently mistreated a number of his Primarchs, eventually driving them to rebel against him, which in turn dragged others into joining them. This invocation of CryForTheDevil helps fuel the BlackAndGrayMorality of the setting.
** Lorgar of the Word Bearers, the Arch-Priest of Chaos who was instrumental in turning the others to Chaos, only did so because the Emperor ordered the destruction of a civilization that Lorgar felt was his crowning achievement, and then publically humiliated the devoted and loyal Legion in front of their Ultramarines, calling them the one Legion he was disappointed with and proclaiming every achievement of Lorgar's life was a failure. Making matters worse, he had said nothing about his disapproval of Lorgar's methods for over a century beforehand.
** Angron of the World Eaters was a mentally damaged berserker, whom the Emperor forcibly abducted from the ranks of his fellow rebel slaves -- the only friends and family he had ever known -- and forced to watch die from safety in orbit when Angron refused to voluntarily abandon them. In the ''Literature/HorusHeresy'' novels, Angron at one point comments he would have turned against the Emperor ''sooner'' if his mind had been stabler.
** Magnus of the Thousand Sons only turned to Tzeentch for salvation when his attempts to warn the Emperor of Horus's corruption and rebellion lead to the Emperor refusing to head Magnus, instead dubbing ''him'' the traitor, and sending the Space Wolves -- who hate and despise the Thousand Sons to begin with -- to destroy Magnus, his Legion and his whole world.
*** Actually, the Emperor only wanted to arrest Magnus to have him brought to Terra, however, on the way to Prospero, Horus gave Leman Russ new orders; the Emperor had changed his mind and wanted Prospero and the Thousand Sons destroyed. That said, sending the Legion that hated the Thousand Sons the most to apprehend them in the first place probably wasn't going to end very well either way, and was likely the very reason Horus gave the order: He knew Russ wouldn't question the order to kill Magnus if he thought it came from the Emperor.
*** It's also implied that Magnus had been in Tzeentch's thrall well before the Emperor found him, and made a further pact with the Chaos God to save his Legion from a mutation curse that probably existed ''because Magnus was in Tzeentch's thrall''. Magnus didn't realize how deep he'd gone until Tzeentch chose to collect during the Battle of Prospero.
** Lion El'Jonson's choice to exile Luther, his long-time brother in arms and closest friend, to Caliban during the Heresy [[spoiler: admittedly, for a momentary lapse where he considered letting the Lion die for his own glory]] had a lot to do with Luther's fall to Chaos. Same goes for every other Dark Angel stationed there.
** Moving things away from the Imperium, there's the Eldar. The Eldar Empire's decadence combined with their race's naturally powerful psyker abilities made the Warp start to manifest a being that reflected their hedonism. The Eldar who realized this was happening reacted in different ways. Some of them decided to get as far away from the rest of the Empire as possible to avoid the backlash after their attempts to get the rest of the Empire to stop being irresponsible hedonistic idiots went nowhere. Others threw themselves even deeper into bloody hedonism since creating a new god of pleasure appealed to them. And that's how Slaanesh was born. The new Chaos God repaid the Eldar by slaughtering their pantheon, slaughtering most of their race, and eating their souls after death. The factions of the surviving Eldar are defined by the different ways they try to prevent Slaanesh from finishing the job.
* An actual game mechanic in ''TabletopGame/BeastThePrimordial'', okay, the player characters are fear-devouring monsters from the darkest depths of the collective unconscious, but they still tend to be better human beings than the so-called "Heroes" that their feedings occasionally produce.

[[folder:Video Games]]
* In ''VideoGame/NeverwinterNights'', the rulers of Neverwinter technically created TheDragon of TheDragon of the BigBad by obeying the wishes of the mob over whatever sense of morality they possessed.
* ''[[VideoGame/{{Onmyoji}} Onmyōji]]'': [[spoiler: Seimei wouldn't have had to deal with the whole Kuro Seimei fiasco if he hadn't played around with spells and [[LiteralSplitPersonality split himself in two]] in the first place]]. Granted, it was completely accidental.
* ''VideoGame/ChampionsOnline'' takes this quite literally: at level 25 the player gets to design their character's ArchEnemy.
* ''VideoGame/DragonFable'' combines this trope with FailureToSaveMurder with the story of Drakonnan.
* Some endings of ''VideoGame/StarFoxCommand'' lead to Dash Bowman, initially hoping to join Star Fox, becoming evil in response to choices made by other characters.
* This is how Sukhov became [[DirtyCommunists Nuclear Winter]] in ''VideoGame/FreedomForce''. Minuteman was trying to hit him with one of his Minute Missiles, but hit a bunch of liquid nitrogen canisters beside him, covering him with the stuff. This, combined with the latent Energy X in his body, turned him into AnIcePerson with a penchant for stealing atomic bombs.
* ''VideoGame/SpiderMan2'' combines Mysterio's comicbook and animated series villainous motivations. Quentin Beck tries to publicly discredit Spider-Man, but gets arrested after releasing several criminals into the arena, who subsequently hold the audience hostage. He blames his arrest on Spidey and devises the Mysterio identity (which he tries to pass off as an evil space alien) to get his revenge.
* ''VideoGame/GhostTrick'':
** [[spoiler:Yomiel strictly speaking got his powers from a freak accident... but he was only in the place where it happened, and unable to notice or react to the meteorite that killed him, because of a standoff with police over a crime he was later exonerated of.]] He isn't the only one to consider it at least ''partially'' the cops' fault; both Cabanela and Jowd consider it MyGreatestFailure.
** It also features two inversions: [[spoiler: Yomiel accidentally shot the lead, giving him his ghost powers, and indirectly compelling him to go on the journey that would bring him down, and the foreigners killed Missile, causing him to come back as a relentless ghost]].
* ''VideoGame/Disgaea3AbsenceOfJustice''. [[spoiler:Super Hero Aurum, having defeated Mao's Overlord father, found that he had run out of strong, evil opponents. So what does he do? He takes the guise of Mao's butler and heaps loads of mental issues and skewed opinions onto his already strained psyche to make his into an OmnicidalManiac for him to beat and have a chance of being a hero again.]]
* The ''VideoGame/{{Ultima}}'' series is notorious for this. The only games in the main series in which the problems the Avatar has to solve are not the direct or indirect result of something he did in a previous game are the first and fourth.
** II: Villain is widow of the villain killed in previous game.
** III: Villain is child of villains of previous two games.
** V: Threat caused by a combination of an artifact owned by the villain of I and cosmic imbalance triggered by events of IV.
** VI: Villains were rightful owners of an artifact the Avatar found in IV, and lost their homes as the result of the Avatar's actions in V.
** VII-IX: Villain is the Avatar's dark side, given independent form after the events of IV.
* In ''VideoGame/RatchetAndClankFullFrontalAssault'' it is revealed that Zurgo was the Qwark Fanboy from ''VideoGame/RatchetAndClankGoingCommando'' who became [[BrokenPedestal disillusioned with Qwark after his involvement in numerous scandals]] and plotted to take revenge on him.
* [[MultipleEndings Flay's ending]] in ''VideoGame/{{Mana Khemia|AlchemistsOfAlRevis}}'' gives this a bit of a twist. He wants to become a "Hero of Justice" and drags Vayne along as his sidekick ([[ExtremeDoormat not that it was hard]]), but quickly finds that no one seems to ''need'' one. Vayne points out the lack of a viable threat, which gives Flay the idea to become one. This, in turn, forces Vayne to become TheHero. It's hard to say who created who.
* ''Franchise/TheElderScrolls'':
** The Falmer are this, with a bit of LaserGuidedKarma, to the Nords. Thousands of years ago in the series backstory, the ancestors to the Nords once nearly drove the Falmer to extinction, and in their desperation, the surviving Falmer fled to their [[OurDwarvesAreDifferent Dwemer]] cousins, who twisted and mutated them into [[TheMorlocks Morlock-like]] monsters. The Falmer of the 4th era are now growing more bold, venturing above ground to kidnap surface dwellers while their numbers swell beneath ground. They also seem to be regaining some of their lost sentience, forging better weapons and armor from farmed [[BigCreepyCrawlies Chaurus]] chitin and practicing crude alchemy to create poisons from the plentiful mushrooms that grow in their underground lairs. The writer of one in-game book even believes that the Falmer may be planning a war with their surface dwelling adversaries, which would be bad news for the already war-torn Skyrim of the era.
*** The Nords themselves are this to the Falmer. When Ysgramor first came to Skyrim from Atmora, he and his followers were content to mind their own business in a few small settlements they built, but the native Falmer absolutely hated the newcomers and tried to drive them off time and again. This all came to a breaking point when the Nords accidentally found the Eye of Magnus in Saarthal. They had no idea what it was and had no intention of using it (being that they naturally distrusted magic), but the paranoid Falmer believed it was just a matter of time before the Nords used it to annihilate them and launched a completely unprovoked preemptive attack on Saarthal, slaughtering everyone inside to the last man, woman and child... except Ysgramor, who escaped, returned to Atmora and came back with the Five Hundred Companions, and much less friendly intentions than he previously had. The ensuing asskicking made the Falmer scuttle to the Dwemer for protection... and since the Dwemer were dicks, they enslaved them in turn after tricking them. The same thing happened with the Ayleid, who were instantly hostile to the Cyro-Nords when they expanded to Cyrodiil and mass enslaved them without even trying to talk or negotiate... causing, years later, the rise and rebellion of the Slave Queen, Alessia, and their own near-extinction.
** ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'':
*** ''[[PlayerCharacter You]]'' can be this to the Empire if you choose to side against them in the {{Civil War}}. Early on in the game, you are almost executed by Imperial soldiers due to, essentially, a clerical error and one very uncaring Imperial captain. Thanks to [[VillainousRescue Alduin]], you manage to escape. Later, you can join [[LaResistance the Stormcloaks]], and be the driving force behind kicking the Empire out of Skyrim. [[spoiler:You can take this even further if you join the [[MurderInc Dark Brotherhood]] as well, because then you can ''murder their Emperor'' as part of their quest line.]] What's scary is the fact that [[spoiler:this double whammy may effectively lead to the collapse of the Empire]]. Moral of the story: '''never''' fuck with the Dragonborn.
*** The Stormcloaks can potentially become this to [[spoiler:the [[ANaziByAnyOtherName Thalmor]]]] in a blatant case of GoneHorriblyRight. Inciting rebellion in a rival empire to weaken them? Classic geopolitical strategy. But what if these rebels go on to ''win'' the civil war and form a powerful independent state with ([[HornyVikings literally]]) an axe to grind against you? [[RoaringRampageOfRevenge Uh oh]].
*** Even a victorious Empire is bad news for the Thalmor. Their attempts to [[GodNeedsPrayerBadly eradicate Talos worship]] directly caused a ''revival'' in [[DeityOfHumanOrigin Talos]] worship all across Tamriel. Woops.
* A gameplay element in ''VideoGame/MiddleEarthShadowOfMordor''. If you fail to humiliate or kill an orc leader or get killed by one, they grow in power. Fail enough and you can promote a regular orc all the way to warchief. It's called "Forge your Nemesis".
* ''VideoGame/BatmanArkhamCity'': Professor Strange accuses Batman of this, citing the Joker specifically. The Joker also blames Batman for his creation. Played with in that Strange cites the Joker blaming Batman as a case of NeverMyFault in that [[MultipleChoicePast all of his origin stories]] have him blame Batman, and none of them have him take responsibility.
-->'''Hugo Strange:''' Have you ever considered that all of this is '''your''' fault? Your presence '''creates''' these animals...
** ''VideoGame/BatmanArkhamOrigins'' takes this further: Batman didn't create the Joker - he gave the Joker a reason to live. Of all the people the Joker had met up to that point, Batman was the only one who wanted the Joker to 'not die'. If he hadn't, Joker would have killed himself and ended his vicious killing spree a LONG time ago. Also, with the introduction of an antithesis, the Joker's schemes and psychosis evolved, to what we know him as, in a matter of minutes.
** In ''VideoGame/BatmanArkhamKnight'', the titular Arkham Knight blames Batman for turning him into who he is by leaving him to be tortured by the Joker for over a year, and seeks vengeance against him throughout the game.
* Ulysses's presence is felt throughout the DLC for ''VideoGame/FalloutNewVegas''. When the Courier reaches the Divide, he/she can uncover Ulysses's motivation for opposing him/her: the Courier brought a package to the Divide, the settlement that Ulysses had adopted as his new home, which triggered the detonation of the nuclear weapons buried underground. Ulysses, as the only real survivor, held the Courier responsible for the disaster that obliterated his home and his neighbors.
* [[spoiler: Prodigal]] in ''VideoGame/HeroesRise'' becomes a supervillain as a direct result of [[spoiler: your parents accidentally killing her mother, Miss Artillery]].
** In the third game, the player character can cause [[spoiler: Black Magic]] to become a {{tragic villain}} by mistreating and betraying them.
* In ''VideoGame/TheBindingOfIsaac'', Isaac only tries to kill his mother [[spoiler: and/or embrace Satan's power to become TheAntichrist]] because she abused and tried to ''murder him first on behalf of the voices in her head''. It's not really surprising he fights back.
* In ''VideoGame/DeadRising3'', Nick Ramos rescues geek Kenny Dermot from zombies at one point, trains him a little in beating zombies and making combo weapons, then goes on his way. Kenny resurfaces as a psychopath, his obsession with becoming the hero leading him to [[IJustWantToBeYou try to kill Nick and take his place]].
** Jherii Gallo, the psychopath representing Pride, is a mild version, as Jherii is the only known psychopath who doesn't actively go out of her way to cause trouble (unless the corpses around the gym aren't zombies), and only becomes a threat once Nick accidentally presses her BerserkButton once too often.
* ''VideoGame/Rayman3HoodlumHavoc'': During a nap, Rayman's hands go and scare an innocent Red Lum into André, the game's main antagonist.
* In ''VideoGame/StarCraft'', Arcturus Mengsk was responsible for making Sarah Kerrigan into the Queen of Blades, the most feared name in the Koprulu Sector, by abandoning her to the Zerg during the fall of Tarsonis.
** Mengsk himself was an example of this. His father, Angus, infamous across the sector for his stance against the rampant corruption, military oppression, and gentrification of the Confederacy, helped to foment a rebellion on his home planet of Korhal. The Confederacy responded first by sending Ghost agents to assassinate Angus and his family, then when the rebellion only swelled, they nuked the planet from orbit. Arcturus was offworld at the time, and when he received word, he vowed revenge on the Confederacy and formed the Sons of Korhal. He would eventually succeed, bringing about the fall of the Confederacy by luring the aforementioned Zerg invasion to Tarsonis, which was the Confederacy's seat of government. Oh, and the reason he abandoned Kerrigan to the Zerg is because Kerrigan was one of the Ghosts sent to kill his family. While he pretended to forgive her in order to make use of her, he got rid of her when her usefulness to him ran out.
* In ''VideoGame/BorderlandsThePreSequel'', it's revealed that while Handsome Jack was always [[ManipulativeBastard immoral]], he only [[JumpingOffTheSlipperySlope went off the deep end]] and became the BigBad of ''VideoGame/{{Borderlands 2}}'' when Roland, Lilith and Moxxi destroyed Helios Station's WaveMotionGun and Lilith [[FacialHorror branded Jack's face]] with the relic found in the Vault of the Sentinel, sending him on a path of revenge to murder everyone on Pandora that wouldn't submit to him.
* Inspector Volerti's suspicion that ''VideoGame/AviaryAttorney'''s protagonist, Jayjay Falcon, is [[spoiler: [[SerialKiller the Viridian Killer]]]] leads to him trying to upset him enough to ''prove'' it. [[spoiler: Namely by sending someone to possibly die in a confrontation with revolutionaries. In ending route 4A (Liberté) there's no 'possibly', and Falcon kills a number of people and goes after Volerti while claiming to be the Viridian Killer, though he had nothing to do with the original.]]
* ''VideoGame/HelloNeighbor'': Whatever his dark secrets, your Neighbor starts out as an ordinary-looking man trying to keep up a façade of ordinary-looking life, and even treats his invading neighbors with ordinary mercy. As you blatantly invade his privacy, steal his stuff, wreck his belongings, and refuse to take a hint at the fact that this is highly illegal, he grows more and more unhinged in his attempts to keep you out. To be fair though, he was likely not a normal person to begin with, and if he didn't have something strange or illegal to hide, he could've simply called the police.
* ''Franchise/SonicTheHedgehog'':
** Shadow does this to [[spoiler:Mephiles]] in ''VideoGame/SonicTheHedgehog2006''. [[spoiler:Chances are, he was still going to wipe out the universe anyway, but he might not have if Shadow hadn't been there to use the Scepter of Darkness.]]
** And Shadow ends up doing this again to [[spoiler: Infinite]] in ''VideoGame/SonicForces''. [[spoiler: After being on the receiving end of a CurbStompBattle from Shadow, he became determined to surpass his power and prove he's not weak, not helped by the fact his band of mercenaries was also destroyed in the conflict. This led to him harnessing the power of the Phantom Ruby and helping Dr. Eggman defeat Sonic in his quest to TakeOverTheWorld.]] So basically, [[UnwittingInstigatorOfDoom Shadow caused the entire plot of the game to happen]] by [[spoiler: demeaning Infinite, killing his squad, and dismissing him as a weakling. [[ButForMeItWasTuesday And he considered it just another ordinary day]]]]. [[NiceJobBreakingItHero Nice job breaking it, Shadow!]]

[[folder:Web Comics]]
* Vengeance Joe from the (sorta-dead) webcomic ''Webcomic/VanVonHunter'' seems to fit. He ended up becoming a minor villain to the title hero when Van didn't introduce himself properly while passing through a town and Joe became insulted, swearing vengeance on him.
* In ''Webcomic/DarthsAndDroids'', Jango Fett is a private detective with a vendetta against Obi-wan Kenobi -- because Obi-wan killed his partner, Darth Maul.
* In ''Webcomic/{{Homestuck}}'', [[spoiler:Vriska]] manipulates events so that [[spoiler:Jack Noir get the powers of a First Guardian]], turning a powerful but still beatable villain into a near invincible PhysicalGod. [[spoiler:The Twist? All this would have happened anyway- Vriska just retconned reality to [[AttentionWhore make herself the centerpiece]].]]
* ''WebComic/MagickChicks'': For the most part, life's been pretty good to [[AlphaBitch Melissa]], though she wasn't very good to her friends. Inevitably, [[http://www.magickchicks.com/strips-mc/quite_popular by the time she realized that]], it was already too late; particularly where [[http://www.magickchicks.com/strips-mc/you_had_that_look Cerise was concerned.]] Not that Cerise was ''[[WithFriendsLikeThese ever]]'' [[http://www.eeriecuties.com/strips-ec/better_you_than_me[=.=] much of a friend.]] But between Melissa's good fortune and repeatedly mistreating Cerise, who felt stuck [[http://www.magickchicks.com/strips-mc/you_chose_her living in her shadow]]... yeah. She finally lost it and decided to [[http://www.magickchicks.com/strips-mc/little_miss_lives_a_lot get rid of Melissa.]]
* A darkly hilarious example of this occurs in a ''WebComic/SaturdayMorningBreakfastCereal's'' strip. However, on this case, the villain's creation's was NOT an accident.
--> ''[[http://www.smbc-comics.com/index.php?db=comics&id=2244 That's why we created Skull-King. The robotic scourge of mankind]].''
* In ''Webcomic/EightBitTheater'' Sarda definitely qualifies, as the less-than-heroic actions of the Warriors of Light eventually results in Sarda learning how to warp reality and going back into the past to make their lives a living hell. It works both ways, too; Sarda's manipulations helped to make the Light Warriors what they are (three out of the four already had varying degrees of villainous tendencies, but it was Sarda who sent them all over the world, making them stronger and giving them more opportunities to wreak havoc), and thus in a manner of speaking [[StableTimeLoop Sarda created himself]].
* The LOL Bat from ''Webcomic/PvP'' [[http://www.pvponline.com/2011/08/10/anger-management-part-three/ beats up a guy when he accidentally commits theft.]] The courts mistake him for a budding supervillain due to his friends calling him the "Mad Hater" as a joke and place him in an insane asylum. [[http://www.pvponline.com/2011/08/11/anger-management-part-four/ The guy goes mad for real and takes his pre-existing grudge with LOL Bat to murderous levels.]]
* ''Webcomic/GirlGenius'' has multiple examples of this.
** Klaus notices that something is off about Agatha. Him trying to kill her not only causes her to leave ''his own airship where she was safely contained'', it also leads to events where she [[spoiler: becomes possessed by [[BigBad the Other]]]].
** Tarvik does this with Agatha when he [[spoiler: possesses her with the spirit of her own mother who is [[BigBad The Other]]]]. To be fair, he didn't expect it to actually work and once he noticed that it had happened, he tries his best to help her with the intention to one day undo it.
** A inversion happens with Merlot: he becomes leader over the university after [[spoiler: Dr. Beetle dies]], leading to him throwing Agatha out. When he later figures out that Agatha [[spoiler: is an immensely powerful Spark, heir of the Heterodyne family and of utmost interest to Baron Wulfenbach]], he tries to hide all this by [[spoiler: killing everyone in the university and setting the building on fire]]. He ends up [[spoiler: serving prison time in Castle Heterodyne]] where he meets Agatha again, trying to accuse her of having made him a villain. When Agatha points out that everything is his own fault, that he created ''himself'', he snaps.
* In ''Webcomic/TheSearchForHenryJekyll'', despite being a villain himself, Hyde creates a villainous rival when he injected Dr. Lanyon with [=HJ7=].
* ''Webcomic/ZebraGirl'': Gregory's actions to [[spoiler:drag Sandra to hell were the last straw for Sandra, pushing her over the edge and leading her to embrace her demonic nature]].
* All is going well for Dr. Kinesis in ''Webcomic/EvilPlan'' until he loses his upgraded telekenesis chip. The boy who ends up finding it uses the newfound power to fight crime and as there is only one super villain in Urbane City that means Kinesis accidentally created his own arch-nemesis.
* ''WebComic/StandStillStaySilent'': When ghosts attack the main characters, Onni uses a spell to get them out of the tank. The spell has the side effect of merging them together into a MindHive that starts assimilating spirits of both other humans and animals that have fallen to the PlagueZombie disease, and eventually becomes the leader of a mixed troll and ghost herd entirely dedicated to going after the main characters, with the purpose of either killing or assimilating them. Onni mentions that the ghosts making up the original being were of a type he had never encountered before, which hints that the spell only has that effect on that specific type of ghost and not on the ones Onni is used to repelling.

[[folder:Web Original]]
* ''Website/TheOnion'': [[https://www.theonion.com/new-bomb-capable-of-creating-1-500-new-terrorists-in-si-1819587307 New Bomb Capable of Creating 1,500 terrorists in a single blast]].
* [[WebVideo/DoctorHorriblesSingAlongBlog Dr. Horrible]] was a TechnicalPacifist and an IneffectualSympatheticVillain. So, [[TheGoodCaptain Captain]] Hammer, the way to deal with him is to [[BullyingADragon Bully The Dragon]] by dating Penny and then [[spoiler: firing a broken DeathRay, accidentally killing her in an attempt to kill him]]. {{Nice job breaking It|Hero}} [[SarcasmMode "hero"]].
** It is heavily implied (and outright stated in the prequel comics) that Captain Hammer's belief that anyone who is nerdy or uncool is a potential supervillain is why Dr. Horrible got to be the way he is. And because you read the above, you know what happens next. And then our hero (Not Captain Hammer, who would barely register as a NominalHero) loses his humanity and everything we loved about him.
* The villainous speedster Slipstream blames the Roleplay/{{Global Guardians|PBEMUniverse}} for the death of his father, the superhero Dogfight (a former member of the Guardians himself) in the 9/11 attacks. Slipstream has sworn vengeance.
* Fragments of the Tesseract Prophecy from ''Literature/{{Phaeton}}'' seems to indicate that Trayen is destined to turn at least one of his friends against him.
* In ''Series/{{Noob}}'', [[spoiler:Tenshirock and Judge Dead]] turn out to be the product of the escalation of a PoorCommunicationKills situation between a WellDoneDadGuy and his son with InferioritySuperiorityComplex. The last straw from the son's point of view was his father doing better than him at the MMORPG in which the story is set, while the father was hoping to gain respect by being good at something his son liked. That lead to the son cutting bridges while leaving the father wondering what the hell happened. The son managed to reach a status higher than his father in regards of the game and was willing to see his father online one last time for an occasion that would let him make sure he never played the game again. The father decided to change in-game identities and go ArchnemesisDad under the new one in hope that it would drive his son away from his new position and make him more open to his attempts to make up with him.
* Actor/comedian Hal Sparks posted a self-described "rant" on his Websiste/YouTube page about how he's tired of this trope, especially in superhero and spy movies. Watch it [[https://www.youtube.com/watch?v=DNU82aaKfYA here]].
* Parodied in ''WebOriginal/SocietyOfVirtue'': [[{{Stripperiffic}} Majestics]] RoguesGallery are mostly TooKinkyToTorture [[LoonyFan fans.]]

[[folder:Western Animation]]
* This trope occurs and is discussed in ''WesternAnimation/BatmanTheAnimatedSeries'':
** A villain creating their own villain:
*** Roland Daggett's attempts to control Matt Hagen with his highly addictive facelift-in-a-jar concoction eventually turned the man into Clayface.
*** It was Rupert Thorne's attempt to blackmail Harvey Dent that lead to Dent's transformation into Two-Face, the transformation itself lead to Two-Face's extra-legal war on Thorne's criminal organization. Candace, [[TheDragon Thorne's right hand]], is well aware of this.
---->'''Mook:''' I thought we got rid of this guy.\\
'''Candace:''' Are you kidding? We '''created''' him.
** In [[Recap/TheAdventuresOfBatmanAndRobinE3Trial "Trial"]], [[JokerJury the Arkham Asylum inmates put Batman on trial]], accusing him of creating them. This trial leads to the revelation that even if Batman had not pushed them off the edge, they were all deeply disturbed people and would have entered villainy anyway from their own motivations. In fact, ''they'' created ''him''. The villains then come to terms with this and ''find Batman innocent''... and then, because they ''are'' such bad guys, they try to kill him anyway.
** In [[Recap/TheAdventuresOfBatmanAndRobinE17LockUp "Lock-Up"]], the eponymous villain was formerly a guard at Arkham Asylum who got his position due to endorsement and support from Wayne Enterprises. When he goes insane and begins kidnapping the people he blames for the cities problems (The police, bureaucrats and reporters that he says ''cause'' the criminals) Robin snarkily comments "Another fine villain brought to you by the Wayne Foundation." The look Batman shoots him is ''not'' happy.
** An inversion occurs in [[Recap/TheNewBatmanAdventuresE23BewareTheCreeper "Beware the Creeper"]]: A villain (the Joker) creates his own hero (the Creeper). And he even does it referencing the way he claims Batman created him, throwing someone into a chemical vat:
--->'''Joker:''' I'll be Batman, and you'll be me.
** Deconstructed with the ClockKing; Mayor Hill was trying to help Temple Fugate.
** In the episode [[Recap/TheNewBatmanAdventuresE12OverTheEdge "Over the Edge"]], the plot is set by Batgirl's fear that this trope will enact if she would be a casualty of the collateral damage from a super-battle: TheCommissionerGordon would become a KnightTemplarParent that will destroy the Bat-family, being created by the death of heroine Batgirl. He wants Batman to spend his days in Arkham, "surrounded by the monsters he's created."
* ''WesternAnimation/TheLegendOfKorra'': Korra is indirectly responsible for creating the villains of Season 3 and 4. By opening the spirit portals and causing Harmonic Convergence, she inadvertently gave Zaheer his airbending, which allowed him to escape from prison and free his friends. Zaheer later incited an anarchist revolution, which caused Kuvira to go on her campaign to build the Earth Empire.
** Su imparted her ideals onto Kuvira, who took them to the worst possible extreme.
* ''WesternAnimation/BatmanBeyond'':
** Terry did not create the CorruptCorporateExecutive Derek Powers, but he was responsible for his mutation into Blight. As Powers had Terry's father killed - and so many others [[ButForMeItWasTuesday/WesternAnimation he can barely remember them]] - Terry feels no sympathy or regret for the man.
-->'''Terry:''' You mean...I made him that?\\
'''Bruce:''' You may have, in part.\\
'''Terry:''' ...Good. (''Bruce gives him a stern look'') Hey, this guy had my father murdered and all he's done since is hide from the law. Well, no more hiding for Mr. Derek Powers. Now everyone can see what he is. [[PowerGlows Even in the dark]].
** A lesser example is with Shriek, who was pressured into using his [[MakeMeWannaShout sonic weapons]] to kill Bruce Wayne by Derek Powers. While at first he "only" intended to murder Bruce, and that only to secure more funding for his research, once Batman causes him to go deaf during their battle he went insane and became a full-fledge supervillain with the sole goal of getting revenge on Batman. Shriek did have initial problems, since he was trying to commit murder for monetary gain.
** Powers actually did the inverse and ''recreated'' Batman since his attempts to cover up his abuses brought Terry and Bruce together.
* Project Cadmus in ''WesternAnimation/JusticeLeague'' is an unusual case, in that they both play this trope straight ''and'' have it applied to them.
** They were created as a government response after the Justice League reveals it has a KillSat built into its orbital space-station and it turned out that, on a parallel world, the Justice League decided to overthrow the governments of the world to stop a nuclear war, which instantly gave fuel to BewareTheSuperman elements within the government.
** Their efforts to create anti-meta projects have resulted in Doomsday, a {{Nigh Invulnerab|ility}}le monster that wants to destroy everything; Galatea, a clone of Supergirl who went insane and turned against them after finding out she was a clone; and the Ultimen, genetically engineered super-humans who... went insane and turned against them after finding out that A: they were going to die due to a flaw in the bio-engineering process, and B: Cadmus was aware of this and simply planned on killing them and replacing them with a batch of fresh clones.
* ''WesternAnimation/TheFairlyOddParents'':
** In "The Secret Origin of Denzel Crocker", it is revealed that Timmy himself is responsible for the cause of Mr. Crocker's obsession with fairies [[SetRightWhatOnceWentWrong when he traveled back to the 70s to stop it from happening]]. Back then, Crocker, like Timmy, used to be a happy child who has bullied by his own evil babysitter, Vic (the male counterpart of Vicky), and had fairy godparents (who ironically happened to be Cosmo and Wanda, though neither of them seem to remember this). [[NiceJobBreakingItHero Timmy accidentally reveals the existence of Crocker's fairies]] at a town meeting whilst trying to stop Crocker from doing so. This results in Cosmo and Wanda being taken away and [[LaserGuidedAmnesia everyone having their memories erased]] including Crocker himself (and accidentally, Cosmo and Wanda), leading to Crocker's disfigured appearance and the townspeople mistakenly believing they are an angry mob hunting down Crocker. It gets even worse that Timmy accidentally left behind Mr. Crocker's own [=DNA=] Tracker which he was using to track him down in the past, thus returning it to the past Crocker.
** Parodied when Timmy becomes ''The Masked Magician''. The Crimson Chin warns Timmy about creating his own supervillain, and lo and behold... [[LargeHam The Hanker-Chief!]]
** Crimson Chin is speaking from experience: His archenemy, the Bronze Kneecap ("and his big BRONZE KNEECAP!!!"), turns evil when, in a parody of supervillain origins, the Chin accidentally breaks his leg during a ''jai alai'' tournament, causing him to get third place once again, and then doesn't apologize. And so Ron Hambone melted down and his third-place bronze trophies...
** The third [[WesternAnimation/JimmyTimmyPowerHour crossover]] with ''[[WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius Jimmy Neutron]]'' had Timmy and Jimmy purposely making a new villain after they discovered [[VictoryIsBoring how easily their combined skills trumped all their regular enemies]]. What makes this funny is that they made a villain, though he wasn't quite as evil as they had hoped, so they ditch him, which then causes the trope to be played oh so wonderfully straight. Confusing? ItMakesSenseInContext.
** And in another episode when Timmy wished for a [[EveryoneIsASuper world of superheroes]], he accidentally created super-''villains'' as well.
* In ''WesternAnimation/TransformersAnimated'', Cyrus "The Colossus" Rhodes hates the Autobots apparently because he lost his job to a machine, and Prometheus Black has a gripe against Sumdac because Sumdac Systems gets all the lucrative contracts instead of him. Interestingly, before Black became Meltdown, he was receiving funding from a member of Sumdac Systems' board of directors.
** Blackarachnia in the same series [[strike:might count]] definitely counts, as she allied herself with the Decepticons after Optimus and Sentinel abandoned her on Archa 7, a [[PlanetOfHats spider planet]], believing she was dead.
*** Sentinel also came to hate Optimus after the ''very same incident'', sparking an intensely antagonistic relationship between the two.
*** To be fair to Optimus, it was ''their'' idea to go to Archa 7 in the first place; in fact, the only reason he was there with them was to keep them out of trouble. Circumstances just weren't in their favor, and Optimus (willingly) took the blame for the incident since he was the commanding officer.
** Wasp was falsely implicated as being a Decepticon spy and during his time in the stockade went nuts and wants a lot of revenge on Bumblebee. Though, Wasp wasn't a very nice bot to begin with.
* ''WesternAnimation/DannyPhantom'':
** Probably as a parody to the ''ComicBook/FantasticFour'' example above, Vlad, Maddie and Jack are working on their first Ghost Portal. Jack pours diet soda into a crucial part, and it blows up in Vlad's face, giving him Ecto-Acne, and with it, his ghost powers. Then he goes all evil and [[BuffySpeak revengey]].
** Technus, though in a more {{lampshad|eHanging}}ing and humorous way. Danny unintentionally frees him from the Ghost Portal (or something) when he first meets him. Assuming him to be a villain, Danny tells him he will not take over the world. Technus, confused, then enlightened actually takes his advice, thus setting his path of villainy.
* Señor Senior Senior from ''WesternAnimation/KimPossible''. Not a particularly serious example, inasmuch as he becomes a villain when it's observed how much he seems like one already, particularly in his private island mansion resembling a typical supervillain lair. Really, though, if [[NiceJobBreakingItHero Ron hadn't said anything about the whole lair thing]], SSS would've likely remained nothing more than [[ArbitrarilyLargeBankAccount an eccentric multi-billionaire]].
* ''WesternAnimation/{{Gargoyles}}'':
** There's an episode that toy with this, as a [[RecurringExtra bystander]] who appeared in many prior episodes plots to get his revenge on the gargoyles and relates every previous encounter he had with them. Played for comic relief, as his revenge was merely a pie-shooting bazooka. For the record, the gargoyles inadvertently cost him every job he ever had since 1997. And the pie was banana creme. The gargoyle[[spoiler:s, including Goliath,]] who took the pie, has no idea who he is. Or why he did it.
** David Xanatos created Thailog, a clone of Goliath educated with Xanatos' own worldview. Naturally, Thailog turned on ''everybody''.
** The Hunters were created when [[spoiler:Demona]] slashed the face of a farm boy. Said farm boy then dedicated his life to hunting down every last gargoyle in existence. [[spoiler: And when he died, his moniker was adopted by another who created generations of families whose whole life is killing Demona and gargoyles]].
** Gargoyles likes doing this. During the time travel episode when Xanatos travels back in time with his new wife Fox as a honeymoon trip and his father to make a pact with The Illuminati to guarantee his fortune in the present and future. Goliath tags along to keep Xanatos honest, while at the same time using the opportunity to find a younger version of Demona and try to convince her not to give into hatred for humans. Instead, Goliath's speech did the opposite and made Demona more cautious of humans, especially after encountering her future self as well. When they returned to the present, Demona made it clear that she remembered his message and it changed nothing.
* ''WesternAnimation/DarkwingDuck'' accidentally causes [[HonestJohnsDealership Bud Flood]] to fall into a vat of contaminated water, turning him into [[MakingASplash the Liquidator]]. It [[Franchise/{{Batman}} sounds]] [[ComicBook/TheJoker awfully]] [[ShoutOut familiar]]... Flood had contaminated the water himself, and Darkwing was in fact there to stop him from doing exactly that; so, really, The Liquidator created himself, Darkwing just helped.
* ''Franchise/{{Ben 10}}''':
** Ben's EvilCounterpart Kevin 11 was just an emo New York City street kid with the superpower of absorbing and channeling energy, until Ben teamed up with him to go on a criminal joyride, allowing Kevin to absorb the Omnitrix's energy and gain all of Ben's superpowers. Already selfish and mean-spirited, access to all that power quickly turns Kevin into a full-blown PsychoForHire who goes on a nation-wide crime spree and attempts to kill Ben on multiple occasions. [[HeelFaceTurn He got better.]] [[AntiHero Most]][[HeelFaceRevolvingDoor ly]].
** [[BigGood Azmuth]] has an ever bigger record than Ben at creating villains by accident. To date, he:
*** Created a highly powerful sword which was used by someone in an attempt to end a civil war between aliens known as Incurseans. This eventually resulted in [[EarthShatteringKaboom their planet being blown up]] and the surviving Incurseans becoming [[TheEmpire an entire Empire]] of SpacePirates.
*** Gave said sword to human hero [[KnightInShiningArmor Sir George]] so he could defeat an EldritchAbomination and save Earth. While George did succeeded, he then founded an Knight Order to defend Earth, the Forever Knights, who after his departure ended up devolving over the centuries into a bunch of [[KnightTemplar fanatical]] [[FantasticRacism anti-alien]] CapeBusters.
*** Is implied to have been [[InsufferableGenius condescending]] and unpleasant toward his assistant Albedo, who eventually developed a ''massive'' superiority complex toward him, tried to create his own Omnitrix and ended up actually [[EvilTwin turned into a clone of Ben as a result]]. Azmuth's attempt to punish him by [[KarmicTransformation leaving him trapt in this form]] resulted in him [[APupilOfMineUntilHeTurnedToEvil turning to villainy]] [[AntiVillain in an effort to recover his original form]], [[SanitySlippage and eventually genuinely becoming psychotic after all he went through to reach this goal.]]
*** Accidentally created Malware, a [[AxCrazy mentally unstable]] [[MechanicalLifeForm Galvanic Mechamorph]] [[HorrorHunger who could only substain himself by devouring his own kind's life force]]. Azmuth promised to find a cure for him, but took his time to work on it, resulting in Malware eventually losing patience, trying to cure himself using an unfinished device and eventually becoming a rampaging sociopath who almost consumed Galvan Prime.
* In ''WesternAnimation/ThePowerpuffGirls'':
** Mojo Jojo was originally created by Professor Utonium, and worked as his assistant. The professor and the girls indirectly turned him into a villain by making him jealous, as the girls hogged the spotlight, leaving Mojo in the shade; which eventually drove him out into the street. As an added twist, Mojo was himself responsible for Chemical X being added into the concoction that spawned the girls. Apparently, he was a very bad lab assistant from the start.
** According to one episode, [[StableTimeLoop Mojo's traveling back in time to try to eliminate Professor Utonium as a child and being thwarted by the girls is what inspired Professor Utonium to become a scientist in the first place.]] Bringing the whole thing full circle...
* An episode of ''WesternAnimation/TheSimpsons'' featured the heroes not so much creating a villain as ''re''creating one. While in Italy the Simpsons run into an apparently reformed Sideshow Bob living happily and honestly as the mayor of a small town. Bob isn't exactly delighted to have the Simpsons around but he treats them well enough... until [[GettingCrapPastTheRadar Lisa gets drunk]] and 'outs' Bob as a former criminal. His new life destroyed he promptly swears revenge.
* ''WesternAnimation/SpiderManTheAnimatedSeries'':
** Invoked by Quentin Beck, aka Mysterio, whose initial motive for turning to crime is revenge on Spider-Man for catching him after his special effects went haywire and shot down a filming copter. It rings hollow because he would have gone to jail anyway; Spider-Man just happened to be the first guy on the scene who managed to catch him.
-->'''Mysterio:''' It's payback time!\\
'''Spider-Man:''' Payback? For what? You did it all to yourself.\\
'''Mysterio:''' That's what my psychiatrist said, but you know what? His sessions never made me feel this good!
** In "The Sting of the Scorpion," Jonah has hired PI Mac Gargan to trail Peter to figure out how he gets all those great pictures of Spider-Man. After finding out, Spider-Man bursts into the Daily Bugle and purposefully plays tough to try to scare some sense into them - even webbing Gargan to the wall, humiliating him. Unfortunately, all he did was give Jonah motivation to bankroll a Neogenic experiment and a willing test subject - making Mac Gargan the Scorpion.
** And like in the comics, Venom - with the symbiote being rejected (and nearly killed), while Eddie Brock had been fired from the Daily Bugle and repeatedly humiliated.
* In ''WesternAnimation/TheBatman'' Mr Freeze considers Batman responsible for making him what he is now. However Victor Fries was already a criminal to begin with; had it not been for that cryo accident he would have been just some common crook.
* The ''WesternAnimation/VeggieTales'' episode "Larry-Boy and the Rumor Weed" actually begins with the title superhero accidentally creating the title weed by knocking a plant off a building and onto some power lines.
* Doc Venture in ''WesternAnimation/TheVentureBrothers'' has a singular talent for this. Baron Ünderbheit became his enemy after an unspecified lab experiment blew off his jaw, The Monarch--probably justifiably--blames him for some college NoodleIncident that ruined his life, and Richard Impossible lost his mind after his wife tried to leave him for Rusty.
** ''All'' ultimately not Rusty's fault. The Monarch was responsible for blowing off Ünderbheit's jaw, and was himself already a lunatic in college for reasons we still don't know. Possibly for being [[RaisedByWolves raised by Monarch Butterflies]] for a period of time after surviving a plane crash which killed his parents as a child. Richard Impossible didn't snap until his wife left him for Rusty's ''brother''. Doc Venture just happens to be a hate sink for supervillains.
* In ''WesternAnimation/TheAvengersEarthsMightiestHeroes'', [[ComicBook/IronMan Tony Stark]] "creates" the villainous {{Energy Being|s}} Wonder Man. When Simon Williams' company goes under because of Tony Stark, Simon is prompted by his brother (Grim Reaper, an agent of ComicBook/{{HYDRA}}) to volunteer for an experiment conducted by ComicBook/{{MODOK}} to gain the power he needs to take his revenge. [[spoiler:Tony was actually trying to ''help'' him by employing him, but he didn't get around to actually saying this to him.]]
* In ''WesternAnimation/TeenageMutantNinjaTurtles2012'', the Turtles accidentally cause Snake's mutation by sending a van smashing into the front of the Kraang's lair as a distraction (so that they could sneak in). In the crash some Mutagen that was in the back of the van gets splattered over Snake, thus mutating him into Snakeweed.
* In ''WesternAnimation/TheAmazingWorldOfGumball'', [[spoiler: Rob]] was a fairly normal classmate of Gumball and Darwin that swore revenge after the duo [[spoiler: unwittingly abandoned him in [[EldritchLocation the Void]]. Rob's attempt to escape by himself then left him [[BodyHorror horribly disfigured]]]]. Oddly enough, Gumball and Darwin are ''thrilled'' to have their own ArchEnemy, and even help him set up a new villainous alter ego. However, it wasn't Gumball's fault for [[spoiler: trapping Rob in the Void and he doesn't know about the place]], and [[spoiler: Rob]] simply chose to become a villain but [[NeverMyFault blames Gumball for pushing him into the role]].
* ''WesternAnimation/AllHailKingJulien'' features the title character often doing this without him realizing it or considering it a big deal.
** In one episode Julien pretends to be a commoner in an attempt to relate to his citizens, but gets too into it and incites a rebellion movement. Since he never fully admits to it, the most loyal followers of the rebellion remain in operation and attempt several assassinations.
** Julien also attempts to domesticate a fossa and teach it to be friendly towards lemurs. While he is successful at first, the fossa eventually gets hungry and remembers that its a carnivore, and returns to its pack with heightened intelligence instead.
** Julien falls in love with his bodyguard's twin sister, but leaves her at the altar creating a WomanScorned as powerful as his own bodyguard.
* ''WesternAnimation/RocketMonkeys'''s BigBad Lord Peel. He was once an ordinary banana-like alien who Gus and Wally mistook for an actual banana and tried to eat him. Years of harassment followed him and soon he turned evil, becoming Lord Peel and dedicating his life to destroying the two monkeys who ruined it.
* ''WesternAnimation/ChalkZone'':
** Skrawl was the result of Rudy being asked to draw something for a birthday girl. Unfortunately for the drawing that was to become Skrawl (and Rudy), a bunch of other kids pushed Rudy out of the way and added their ideas to the drawing, making Skrawl the misshapen being he is today.
** Craniac 4 is created by Rudy to stop to take care of Craniac 3 only to turn on him and unlike Skrawl, Craniac 4 is purely created by Rudy and on purpose.
* ''WesternAnimation/AtomicPuppet'':
** Mookie is implied to have turned Captain Atomic into a sock puppet because of Captain Atomic's [[MistreatmentInducedBetrayal poor attitude towards his sidekick.]]
** Joey's SadistTeacher Ms. Erlenmeyer became evil after going mad as a result of AP believing she was a supervillain (long story). She later comes in contact with an alien entity from another dimension and is transformed by it into a powerful psychic named Queen Mindbender, [[FromBadToWorse turning her into one of Atomic Puppet's most dangerous foes]].
* In ''WesternAnimation/SonicBoom'', Knuckles' stupidity and incompetence ends up causing Charlie a lot of grief, costing him his job, and causing his wife to leave him. Charlie vows revenge and acquires some powerful armor and weapons to attack Knuckles. Although he eventually loses, his wife returns to him because she liked him finally becoming a tough guy and then they both become straight up supervillains.
* In the infamous episode ''[[Recap/EdEddnEddyS4E1IfItSmellsLikeAnEd If It Smells Like An Ed]]'' from ''WesternAnimation/EdEddNEddy'', Eddy does this to [[spoiler:Jimmy]]. [[spoiler:After he gives Jimmy a wedgie, Jimmy seeks revenge on ''all three Eds'' as a result]].