History VillainFixing / AnimeAndManga

** Frieza does it again in ''Resurrection 'F''. Him committing his entire army on the invasion of Earth ends up saving the universe. [[spoiler:Not only was his army defeated by the Earth's defenders, [[YouHaveFailedMe he ruthlessly kills his own men for their failure]], leaving only Sorbet alive who is killed by Vegeta. With Frieza's final death, all the planets that remained under his empire's control are now free and he saves thousands if not millions of lives that would have been lost in planetary uprisings. Sorbet's attempts to revive the trade empire to its former glory by bring back Frieza actually helps put the final nail in its casket.]] Thanks Sorbet and Frieza.[[spoiler:..Atleast until TheStinger of the Universal Survival Arc, where Frieza decides to rebuild his empire across the universe.]]

** ''Anime/HealinGoodPrettyCure''. King Byogenz... Don't you think that perhaps you should have let Guaiwaru kill the Cures...and THEN absorm him? Or even better... Killing them while they were exhausted instead of retreating for no reason whatsoever? No wonder the Cures managed to kill you.

* During the Duelist Kingdom arc of ''Manga/YuGiOh'', Dinosaur Ryuzaki (Rex Raptor) was about to win the duel against Jonouchi (Joey), but [[RevengeBeforeReason thought about wanting to use Joey's Time Wizard against Mai]]. The former had to bet his most powerful card, the Red Eyes Black Dragonl, for the latter to bet Time Wizard. Joey agreed to the bet, but got the idea to use Time Wizard's special ability to win. In the end, Jonouchi got 2 more star chips and a Red Eyes Black Dragon that would help him out in future duels.

* NiceJobFixingItVillain/OnePiece

* In ''Manga/AttackOnTitan'',

* ''Anime/DigimonAdventure's'' Devimon, the series' first BigBad, accidentally triggers the one Digimon that could beat him into Evolving/Digivolving by threatening its partner's life. Vamdemon/Myotismon was strong enough to beat all seven of the Chosen Children/[=DigiDestined=] and could have done so, if he hadn't spent so much time searching for the eighth, and allowing her to find her Digimon.

* ''Manga/InuYasha'':

** In ''[[Manga/StardustCrusaders Part 3]]'', the first enemy they fight upon reaching Egypt completely sabotages his own opportunity to defeat them. He decides to crash the helicopter of the [[RedShirt Speedwagon Foundation agents]] who had already completed their mission in dropping off the SixthRanger and giving supplies and intel. Discovering the crash lets the heroes know that an enemy is nearby, which gives them just enough time to not get killed by his surprise attack. Since, even with that, he manages to injure one of them enough to keep them in the hospital until the end of the story, his surprise attack almost certainly would have killed them had he not blown his cover to attack some defenseless {{Red Shirt}}s.
** In ''[[Manga/DiamondIsUnbreakable Part 4]]'', Yoshikage Kira blowing his cover while murdering an (not-so) innocent couple while taking the face of Kosaku Kawajiri, finally turns Hayato against him for good, leading to his defeat and death.
** In ''[[Manga/GoldenWind Part 5]]'':

*** Hadn't The Boss gone the extra mile to [[spoiler: kidnap Trish in front of Bucciarati and take her arm, Trish would have died and Bucciarati would have remained loyal to the Boss.]]
*** The Boss [[spoiler: letting Polnareff die instead of checking in]] allows him to help Team Bucciarati and [[spoiler: give him the Requiem Arrow, which was instrumental in Diavolo's defeat.]]

* ''LightNovel/RollOverAndDie''

* In ''LightNovel/ShakuganNoShana'', during Season 2, Hecate, one of the villains, infiltrates the school that Yuji is going to through a sort of poorly disguised covert agent named Konoe. Konoe then tries to get close to Yuji, much to the consternation of [[ClingyJealousGirl Shana and Yoshida]]. While gathering feelings and emotions, one thing that Konoe discovers is that birds seem attracted to her, and she often reaches out with her hand to let them land, making her happy. Later on, this comes back to bite Hecate in the behind when said memory inside the Statue of Pride triggers when it sees Shana flying towards it, looking like a little bird. Instead of attacking her like it had been, the statue instead reached out with its hand, allowing Shana and Yuji the opening they needed to reclaim the Reiji Maigo from it, as well as defeating said statue. Cue Hecate looking on in shock and wondering exactly what just happened.

* The ''Main/BigBad'' Kisaki in ''Manga/TokyoRevengers'' had the last laugh against Takemichi in the original & multiple futures, but he just had to [[spoiler:hire people to kill off Hinata for rejecting his love & subsequently do the same to his love rival Takemichi who had nothing to do with any gangs in the original timeline.]] His decisions eventually lead Takemichi to trigger his time leap powers to ruin his plans repeatedly to avert the tragedy, [[spoiler:ultimately resulting in [[Main/KarmicDeath his own early death]]]].

* In the final episode of ''Manga/DragonQuestTheAdventureOfDai'', [[spoiler:Killvearn]] could have simply just set off the black core bomb without approaching the heroes, completely wiping the surface world and having the last laugh. No, he has to gloat about his plans to the heroes and did not even have a way to ensure his own protection from the heroes' attack that ended his life. His plan failed simply by being cocky and revealing too much information to the heroes.

* Played pretty much straight with Gauron from ''LightNovel/FullMetalPanic'', of all people. Despite all that he's done and/or tried to do to Sousuke, his words end up have an eventually positive impact on the kid. For example, his lecture in TSR contains not only vital information that he willingly passes on to Sousuke (in order to get revenge on his former organisation, but mostly "as a favour to you"), but it also poses Sousuke one of the most important questions in his personal arc: "Did you sell your soul to those bastards in Mithril?" Sousuke gives his answer during his confrontation with his Mithril superiors at the end of TSR: "I dont' remember selling my soul to you." Also, on every occasion after Gauron's death (uh... the final, ''definitive'' one, I mean...), that someone mentions Gauron, it only serves in making Sousuke try harder. He uses his 'Kashim' personality to reach his goals, knows some of his enemies better because they were Gauron's associates (and they fear/respect him because they know how Gauron... ''felt'' about him) and he eventually confirms his and Gauron's almost identical nature to Leonard Testarossa's face, with no shame or guilt, merely pointing out the one thing that made them different: the enjoyment they each took in the act of killing (or lack thereof, in Sousuke's case). And in hearing Leonard's words about Gauron's opinion on the delicate subject of changing history/fate, Sousuke received confirmation of his own beliefs (apparently, he trusted Gauron's judgement on this matter, at least). All in all, not a bad job from the resident psychopath of the series.

* ''Manga/{{Bleach}}'': Charlotte has no idea that Yumichika refuses to release his true power in battle because he doesn't want to reveal that power to his colleagues. When Charlotte unleashes his FinishingMove, it encases them both in a supernatural rose bush that's designed to drain Yumichika's life-force. The rose bush has a secondary effect of completely isolating Yumichika from the rest of the battlefield so that no-one will see or sense him die. As a result, Yumichika is finally given the opportunity to unleash his true power while protecting his secret. Charlotte is instantly one-shotted.

* In ''LightNovel/AscendanceOfABookworm'' a clergyman that hates Maine agrees to give her three attendants. One is the brattiest kid in the orphanage who cannot be disciplined and another is a girl that is obviously spying on her. Neither can be considered competent. The third is, but ''he'' functions as a spy for a different priest. However, this works out for Maine since she treats the bratty kid with respect and praise, which is all he wanted. He then begins learning how to do his job right. The second girl falls in line when she realizes she can't be an effective spy and might as well work with Maine, who is willing to be nice to her and reward her for hard work. The third one is won over by pointing out that while Maine is too nice for him and the position insulting, the fact that he was given the position shows that the other priest valued him. As such, Maine ends up with three competent attendants who are all more loyal to Maine than the head of the temple.

* ''Anime/DragonBallZ'':

* In ''Manga/HonooNoAlpenRose'', the maid Anna is an accomplice of ManipulativeBastard Toulonchamp, whose plans relay on his daughter Mathilda acting as the BodyDouble of female lead Jeudi. Thing is, at some point Anna attempts to murder Jeudi via dropping a flower pot on her head... but fails, and Jeudi "merely" gets her ankle hurt. This ''very'' dumb move not only alerts the people around about how far Toulonchamp is willing to go (which reduces their willingness to collaborate), but it also scares the crap outta ''Mathilda herself'' and pushes her to drop part of the truth on Lundi... and it starts to plant the seeds of doubt in the heart of Jeudi's IllGirl mother Helen.

* In ''Manga/{{Naruto}},'' [[StrawNihilist Pain]] has Naruto utterly beaten, pinned to the ground and paralyzed. When [[LivingEmotionalCrutch Hinata]] jumps in to try and save Naruto, Pain blows her away, knocking her out. Then, [[TeachHimAnger just to make a point about suffering]] (or possibly [[ForTheEvulz just to be a dick]]), he stabs her, apparently fatally. [[BerserkButton This triggers]] Naruto's UnstoppableRage, going straight to [[SuperpoweredEvilSide his 6-tailed form for the first time]], Do not pass Go-style, [[UpToEleven then eventually to his 8-tailed form]], and [[DespairEventHorizon is tempted to go fully to 9-tails]]. Presumably Pain thought he could win, since his ability was keeping Naruto paralyzed and with disrupted chakra. He would have been ''dead'' wrong if the 4th Hokage's safeguard hadn't brought Naruto back from the brink but even so it directly brought about his own defeat by freeing and re-empowering Naruto. Nonetheless, when Naruto finally snaps out of it, Pain isn't ''nearly'' as confident anymore.

* [[BigBad Muzan Kibutsuji]] from ''Manga/DemonSlayerKimetsuNoYaiba'' shot himself in the foot after killing Tanjiro's family just for some petty vengeance against the [[spoiler: Sun Breathing users]], and turning Nezuko into a Demon just for the spite, because [[spoiler: Tanjiro, her brother succeeded in making Nezuko retain her humanity, while Tanjiro himself discovered Sun Breathing due to fighting against his demons, ''the very outcome he wanted to prevent''. Nezuko later gains immunity from the sun, heavily implied due to her pacifistic nature, which hasted Muzan's fall after he decides to capture Nezuko.]]