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** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the [[PuppetKing figurehead Queen of the nations unified under Romefeller's banner]], and she accepted to protect the remaining citizens. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war. [[spoiler: And when they ''did'' finally manage to checkmate her, the one who took over was... [[MagnificentBastard Treize Khushrenada]].]]

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** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the [[PuppetKing figurehead Queen of the nations unified under Romefeller's banner]], and she accepted to protect the remaining citizens. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war. [[spoiler: And when they ''did'' finally manage to checkmate her, the one who took over was... [[MagnificentBastard Treize Khushrenada]].Khushrenada]], the ''other'' spanner in Romefeller's works because he was not a warmonger; he didn't espouse total peace like Relena but throughout held to the idea that war is not a goal but a means: something that simply has its place as and when needed.]]
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* In the second part of the ''Anime/ExplorerWomanRay'' [-OVA-]s, Ray [[spoiler: uses a crystal pendant on the Ord temple - which uses controlled light beams as a means of somehow controlling the weather - in order to stop bad guy Rieg Vader from controlling it.]]

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* In the second part of the ''Anime/ExplorerWomanRay'' [-OVA-]s, [=OVA=]s, Ray [[spoiler: uses a crystal pendant on the Ord temple - which uses controlled light beams as a means of somehow controlling the weather - in order to stop bad guy Rieg Vader from controlling it.]]
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* In the second part of the ''Anime/ExplorerWomanRay'' [-OVA-]s, Ray [[spoiler: uses a crystal pendant on the Ord temple - which uses controlled light beams as a means of somehow controlling the weather - in order to stop bad guy Rieg Vader from controlling it.]]
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** In ''Anime/DragonBallZ'', Gohan and Krillin become this to both Vegeta and Frieza on Namek. First, Gohan steals the Dragon Ball that Vegeta took and hidden. Second, Gohan and Krillin teaming up with Vegeta against the Ginyu Force kept themselves alive long enough for Goku to arrive and save them, taking out the last major force on Frieza's side. Then, their friendship with the Namekians gave them access to the Dragon Balls, allowing them to wish Piccolo back to life and bring him to Namek, on tope of denying both Frieza and Vegeta their chance at immortality.

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** In ''Anime/DragonBallZ'', Gohan and Krillin become this to both Vegeta and Frieza on Namek. First, Gohan steals the Dragon Ball that Vegeta took and hidden. Second, Gohan and Krillin teaming up with Vegeta against the Ginyu Force kept themselves alive long enough for Goku to arrive and save them, taking out the last major force on Frieza's side. Then, their friendship with the Namekians gave them access to the Dragon Balls, allowing them to wish Piccolo back to life and life, bring him to Namek, on tope of denying both and deny Frieza and Vegeta their chance at immortality.

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* In ''Manga/DragonBall'', the [[ArmiesAreEvil Red Ribbon Army]] is a worldwide military organisation planning to use the [[MacGuffin Dragon Balls]] to TakeOverTheWorld. Too bad they didn't expect to be dealing with a [[KidHero 12-year-old boy]] [[SimpleStaff with a stick]] after the [[OrphansPlotTrinket Four Star Dragon Ball]] left to him by his deceased grandfather. In fact, Goku may not have been inclined to attack the Red Ribbon Army's headquarters...until they sent Tao Pai Pai to kill the guy who happened to have the ball Goku wanted. This meant Goku had to make amends and that meant he now had to get ''all'' the balls...including the ones the Red Ribbons had already collected. ''[[OhCrap Their base is now a target.]]''

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* In ''Manga/DragonBall'', the ''Manga/DragonBall'':
**The
[[ArmiesAreEvil Red Ribbon Army]] is a worldwide military organisation planning to use the [[MacGuffin Dragon Balls]] to TakeOverTheWorld. Too bad they didn't expect to be dealing with a [[KidHero 12-year-old boy]] [[SimpleStaff with a stick]] after the [[OrphansPlotTrinket Four Star Dragon Ball]] left to him by his deceased grandfather. In fact, Goku may not have been inclined to attack the Red Ribbon Army's headquarters...until they sent Tao Pai Pai to kill the guy who happened to have the ball Goku wanted. This meant Goku had to make amends and that meant he now had to get ''all'' the balls...including the ones the Red Ribbons had already collected. ''[[OhCrap Their base is now a target.]]''


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**In ''Anime/DragonBallZ'', Gohan and Krillin become this to both Vegeta and Frieza on Namek. First, Gohan steals the Dragon Ball that Vegeta took and hidden. Second, Gohan and Krillin teaming up with Vegeta against the Ginyu Force kept themselves alive long enough for Goku to arrive and save them, taking out the last major force on Frieza's side. Then, their friendship with the Namekians gave them access to the Dragon Balls, allowing them to wish Piccolo back to life and bring him to Namek, on tope of denying both Frieza and Vegeta their chance at immortality.
**In ''Dragon Ball Minus'', Frieza recalls all the Saiyans to their home planet so he can kill them all at once in a month's time. He does this because he fears the Saiyans rebelling and becoming Super Saiyans. This alerted Bardock and and his wife, Gine, so they sent their youngest child away. That child grew up to become the Super Saiyan who kicks Frieza's butt.
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** [[IdiotHero Luffy]] honestly doesn't care about the [[TheGovernment World Government's]] rule, or for that matter any of the {{Big Bad}}s he faces. He just won't let anyone he cares about get hurt and will go to any lengths to protect his TrueCompanions. Hence his defeat of two of the [[PsychoForHire Seven Warlords of the Sea]],[[note]]''Three'' as of Chapter 791[[/note]] the destruction of Enies Lobby, and the assault upon the [[AristocratsAreEvil most powerful jerkasses]] in the world. Soon afterwards we add [[spoiler:the first successful mass-jail break from [[TheAlcatraz Impel Down]] and his assault upon the Marine HQ, just to save his big brother from being executed.]] The surrounding politics and larger conflict don't enter his mind at all.

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** [[IdiotHero Luffy]] honestly doesn't care about the [[TheGovernment World Government's]] rule, or for that matter any of the {{Big Bad}}s he faces. He just won't let anyone he cares about get hurt and will go to any lengths to protect his TrueCompanions. Hence his defeat of two beating three of the [[PsychoForHire Seven Warlords of the Sea]],[[note]]''Three'' as of Chapter 791[[/note]] Sea]] (not to mention making another fall in love with him and allying with yet another who proved to be TheMole), the destruction of Enies Lobby, and the assault upon the [[AristocratsAreEvil most powerful jerkasses]] in the world. Soon afterwards we add [[spoiler:the first successful mass-jail break from [[TheAlcatraz Impel Down]] and his assault upon the Marine HQ, just to save his big brother from being executed.]] The surrounding politics and larger conflict don't enter his mind at all.



** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which escalated to involve nearly every major power in the world in some form—-the Seven Warlords of the Sea, the Four Emperors, the Marines, the World Government, and the Revolutionary Army-—wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it... though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat.

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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which escalated to involve nearly every major power in the world in some form—-the Seven Warlords of the Sea, the Four Emperors, the Marines, the World Government, and the Revolutionary Army-—wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it... though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat. Luffy grants his wish for the most part. Doffy's not dead, but he's clearly ruined. So when the government kicks him out of the Warlords and puts him and Luffy on equal footing, he shrugs it all off as if to say, "SoLongSuckers"
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* Although the events of ''Manga/CardcaptorSakura, Manga/TsubasaReservoirChronicle'', and ''Manga/XxxHoLic'' are among the most complex and [[GambitPileup densely gambited]] known to man, ''none'' of the respective [[TheChessmaster chessmasters]] could anticipate the YaoiGuys of the former two. The gambit ruling the latter one ''did'' anticipate the YaoiGuys - but apparently failed to anticipate a ''heterosexual crush'' from one of them.

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* Although the events of ''Manga/CardcaptorSakura, Manga/TsubasaReservoirChronicle'', and ''Manga/XxxHoLic'' are among the most complex and [[GambitPileup densely gambited]] known to man, ''none'' of the respective [[TheChessmaster chessmasters]] could anticipate the YaoiGuys of the former two.two expected Yukito to fall in love with Touya instead of Sakura. The gambit ruling the latter one ''did'' anticipate the YaoiGuys - but apparently failed to anticipate a ''heterosexual crush'' from one of them.
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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which escalated to involve nearly every major power in the world in some form—Shichibukai, Yonko, the Marines, the World Government, and the Revolutionary Army—wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it…though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat.

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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which escalated to involve nearly every major power in the world in some form—Shichibukai, Yonko, form—-the Seven Warlords of the Sea, the Four Emperors, the Marines, the World Government, and the Revolutionary Army—wouldn't Army-—wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it…though it... though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat.
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* In ''Manga/DragonBall'', the [[ArmiesAreEvil Red Ribbon Army]] is a worldwide military organisation planning to use the [[MacGuffin Dragon Balls]] to TakeOverTheWorld. Too bad they didn't expect to be dealing with a [[KidHero 12-year-old boy]] [[SimpleStaff with a stick]] after the [[OrphansPlotTrinket Four Star Dragon Ball]] left to him by his deceased grandfather.

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* In ''Manga/DragonBall'', the [[ArmiesAreEvil Red Ribbon Army]] is a worldwide military organisation planning to use the [[MacGuffin Dragon Balls]] to TakeOverTheWorld. Too bad they didn't expect to be dealing with a [[KidHero 12-year-old boy]] [[SimpleStaff with a stick]] after the [[OrphansPlotTrinket Four Star Dragon Ball]] left to him by his deceased grandfather. In fact, Goku may not have been inclined to attack the Red Ribbon Army's headquarters...until they sent Tao Pai Pai to kill the guy who happened to have the ball Goku wanted. This meant Goku had to make amends and that meant he now had to get ''all'' the balls...including the ones the Red Ribbons had already collected. ''[[OhCrap Their base is now a target.]]''
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** In ''Anime/GundamBuildFighters'', Chairman Mashita of PPSE creates arcade game-like machines that [[MundaneUtility animate Gundam model kits]], which have become a worldwide phenomenon and made him a nice chunk of change. And then along comes Reiji, the prince of the otherworldly kingdom from which Mashita stole the [[MinovskyPhysics unusual particles]] which make Gunpla Battle machines work. Afraid that Reiji's victory would give him the spotlight and the opportunity to expose Mashita's theft, the Chairman begins rigging the World Tournament in the hopes of eliminating Reiji...but due to his piloting skills, the model-building talents of his partner Sei Iori, and the TrueCompanions bonds they share with each other and most of the tournament's other participants, every attempt thusfar has failed.

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** In ''Anime/GundamBuildFighters'', Chairman Mashita of PPSE creates arcade game-like machines that [[MundaneUtility animate Gundam model kits]], which have become a worldwide phenomenon and made him a nice chunk of change. And then along comes Reiji, the prince of the otherworldly kingdom from which Mashita stole the [[MinovskyPhysics unusual particles]] which make Gunpla Battle machines work. Afraid that Reiji's victory would give him the spotlight and the opportunity to expose Mashita's theft, the Chairman begins rigging the World Tournament in the hopes of eliminating Reiji...but due to his piloting skills, the model-building talents of his partner Sei Iori, and the TrueCompanions bonds they share with each other and most of the tournament's other participants, every attempt thusfar has failed. Ultimately, he threw in his Trump Card, a BrainwashedAndCrazy Meijin Kawaguchi III and his Exia Dark Matter, causing the duo to defeat him and also expose the truth of those particles.
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** In the original {{O|riginalVideoAnimation}}VA it was suggested she actually had had a mental breakdown from being overworked which turned her from a top cop into a comic ditz -- as hinted by Kagato's comment about her past exploits. (And he should know, since Mihoshi's meddling [[spoiler: led to the release of Washu, whom [[CrystalPrison he held hostage]] ''in a PocketDimension'' that no one but Kagato knew of'', and yet Mihoshi somehow got there with ease.]]) Later versions, though, lack this detail and instead are all just lucky enough to be teamed up with Kiyone, who usually can get the job done in spite of Mihoshi. Yet as evidenced by her enormous reports, Mihoshi still seems ridiculously thorough.
** In ''Anime/TenchiInTokyo'', we have ''three'' of these: Washu, because the villains always tend to underestimate her, and in this case this lets her [[spoiler: lock herself in her laboratory to decode Yugi's plans without anyone disturbing hr]]; [[spoiler: Sasami]], because [[spoiler: Yugi got distracted by her desire to keep her out of her schemes since she's her MoralityPet]] (and this is pointed out by [[spoiler: Matori]], ''twice''); and '''specially''' [[spoiler: Sakuya, who despite being Yugi's "shadow", in the end turns out to be more independent than she should've been, and ends up breaking through a LotusEaterMachine that keeps Tenchi away, and then sends him back to fight Yugi.]]

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** In the original {{O|riginalVideoAnimation}}VA it was suggested she actually had had a mental breakdown from being overworked which turned her from a top cop into a comic ditz -- as hinted by Kagato's comment about her past exploits. (And he should know, since Mihoshi's meddling [[spoiler: led to the release of Washu, whom [[CrystalPrison he held hostage]] ''in a PocketDimension'' PocketDimension inside Kagato's CoolSpaceship that no one but Washu and Kagato knew of'', and yet Mihoshi somehow got there with ease.]]) Later versions, though, lack this detail and instead are all just lucky enough to be teamed up with Kiyone, who usually can get the job done in spite of Mihoshi. Yet as evidenced by her enormous reports, Mihoshi still seems ridiculously thorough.
** In ''Anime/TenchiInTokyo'', we have there are ''three'' of these: Washu, because the villains always tend to underestimate her, and in this case this lets her [[spoiler: lock herself in her laboratory to decode Yugi's plans without anyone disturbing hr]]; her, which she manages to do almost flawlessly]]; [[spoiler: Sasami]], because [[spoiler: Yugi got distracted by her desire to keep her out of her schemes since she's her MoralityPet]] (and this is pointed out by [[spoiler: Matori]], ''twice''); and '''specially''' [[spoiler: Sakuya, who despite being Yugi's "shadow", in the end turns out to be more independent than she should've been, and ends up breaking through a LotusEaterMachine that keeps Tenchi away, and then sends away so she can him back to fight Yugi.]]



*** To that end, KAIN's own plan is derailed when he [[KickTheDog decides to toy with both Achika and Noboyuki]]. [[ViolentlyProtectiveGirlfriend Achika]] seeing Noboyuki's beaten body and the poor guy ''still'' devoted to trying to make her happy even in his state is enough to awaken her power when she goes into a TranquilFury.

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*** To that end, KAIN's own plan is derailed when he [[KickTheDog decides to toy with both Achika and Noboyuki]]. [[ViolentlyProtectiveGirlfriend Achika]] seeing Noboyuki's beaten body and how the poor guy is ''still'' devoted to trying to make her happy even in his state is enough to awaken her power when she goes into a TranquilFury.



* [[spoiler:Midori Sugiura]] from ''Anime/MaiHime'' threw a big wrench in the BigBad's plans to take over/destroy the world through the "winner" of the [[ThereCanBeOnlyOne battle royale]] by enlisting the help of the most unlikely of characters: [[spoiler:Miyu the RobotGirl, whom she rebooted]].

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* [[spoiler:Midori Sugiura]] from ''Anime/MaiHime'' threw a big wrench in the BigBad's plans to take over/destroy the world through the "winner" of the [[ThereCanBeOnlyOne battle royale]] by enlisting the help of the most unlikely of characters: [[spoiler:Miyu the RobotGirl, whom she located and rebooted]].



** In the WholeEpisodeFlashback of manga chapters 921-924, [[spoiler: Shinichi himself was one of these ''at the age of four''. In his attempts to befriend a just as young Ran in his new daycare, he briefly caught [[NightmareFace a weird]] [[OhCrap expression]] in the face of the daycare worker in charge. He mentioned that as well as other details in front of his parents in what seemed to be just a display of childish jealousy... but allowed his GuileHero dad Yusaku to realize that the teacher and his IllGirl wife were planning to ''kidnap Ran and raise her as their own "child"'' so she'd be the ReplacementGoldfish of their runaway daughter. Yusaku alerted the police (including Ran's father), had the wife and her brother arrested, convinced the teacher to turn himself in willingly in exchange for being reunited with the missing daughter, and Ran was ultimately saved -- all because [[ChildProdigy Shinichi]] made his first deductions right in the perfect moment.]]
* HotBlooded BadassNormal Sanosuke Sagara from ''Manga/RurouniKenshin'' once threw a wrench in MagnificentBastard Shishio's plans by [[spoiler:sneaking close to his battleship and wrecking it with some bombs given by his friend Katsu, an explosives expert. This prevented Shishio from bombing Kyoto. And Shishio openly acknowledged Sanosuke's role in this.]]

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** In the WholeEpisodeFlashback of manga chapters 921-924, [[spoiler: Shinichi himself was one of these ''at the age of four''. In his attempts to befriend a just as young Ran in his new daycare, he briefly caught [[NightmareFace a weird]] [[OhCrap expression]] in the face of the daycare worker in charge. He mentioned that as well as other details in front of his parents in what seemed to be just a display of childish jealousy... this but allowed his GuileHero dad Yusaku to realize that the teacher and his IllGirl wife were planning to ''kidnap Ran and raise her as their own "child"'' so she'd be the ReplacementGoldfish of their runaway daughter. daughter''. Yusaku alerted the police (including Ran's father), ActionDad Kogoro), had the wife and her brother brother/accomplice arrested, convinced the teacher to turn himself in willingly in exchange for being reunited with the missing daughter, and Ran was ultimately saved -- all because [[ChildProdigy Shinichi]] made his first deductions right in the perfect moment.]]
* HotBlooded BadassNormal Sanosuke Sagara from ''Manga/RurouniKenshin'' once threw a wrench in MagnificentBastard Shishio's plans by [[spoiler:sneaking close to his battleship and wrecking it with some bombs given by his friend Katsu, an explosives expert. This prevented Shishio from bombing Kyoto. And Shishio [[GracefulLoser Shishio]] [[LampshadeHanging openly acknowledged Sanosuke's role in this.this]].]]



* In ''Manga/{{Basilisk}}'', Princess Oboro may not be able to fight, but she derails [[spoiler: BigBad Tenzen]]'s plans ''thrice''. First, [[spoiler: she tries to interrupt a fight between Koushirou and Gennosuke but accidentally causing Koushirou to [[EyeScream blind himself with his own powers]], limiting Tenzen's physical actions since Koushirou is his NumberTwo]]. Second, [[spoiler: she seals her own [[AntiMagic Piercing Eyes]] to avert using her powers against her clansmen again, but ''also'' preventing Tenzen from using said powers for his sole benefit.]] And third, [[spoiler: her eyes are de-sealed when ''Tenzen is reviving himself after Gennosuke kills him'', nullifying his {{Immortality}} and killing Tenzen for good]]. And in the end she also [[spoiler: derails Ofuku's plans via commiting an HeroicSuicide instead of killing a completely indefense Gennosuke, sending her into a ''mighty'' VillainousBreakdown.]]

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* In ''Manga/{{Basilisk}}'', Princess Oboro may not be able to fight, but she derails [[spoiler: BigBad Tenzen]]'s plans ''thrice''. First, [[spoiler: she tries to interrupt a fight between Koushirou and Gennosuke but accidentally causing causes Koushirou to [[EyeScream blind himself with his own powers]], limiting Tenzen's physical actions since Koushirou is his NumberTwo]]. Second, [[spoiler: she seals her own [[AntiMagic Piercing Eyes]] to avert using her incredibly lethal powers against her clansmen again, but ''also'' preventing Tenzen from using said powers for his sole benefit.]] And third, [[spoiler: her eyes are de-sealed when ''Tenzen is reviving himself after Gennosuke kills him'', nullifying his which allowes her to undo Tenzen's {{Immortality}} and killing Tenzen kills him for good]]. And in the end she also [[spoiler: derails Ofuku's plans via commiting an HeroicSuicide instead of killing a completely indefense Gennosuke, sending her into a ''mighty'' VillainousBreakdown.]]



** You can't help but pity Father. Despite being an EldritchAbomination who spent centuries erecting a [[GambitRoulette massive plan]] to gain godhood, fate sent an entire legion of fools to ruin his day. In addition to [[spoiler:Scar's brother]], you've got Ling Yao and his entourage, who can sense Homunculi and just want the secret of immortality; May Chang, who uses alkahestry instead of alchemy and is on the same quest as her half-brother Ling; and even Scar himself, whose thirst for revenge almost derails the plan several times.

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** You can't help but pity Father. Despite being an EldritchAbomination who spent centuries erecting a [[GambitRoulette massive plan]] to gain godhood, fate sent an entire legion of fools to ruin his day. In addition to [[spoiler:Scar's brother]], you've got Ling Yao and his entourage, who can sense Homunculi and just want the secret of immortality; May Chang, who uses alkahestry instead of alchemy (therefore she lacks its weaknesses) and is on the same quest as her half-brother Ling; and even Scar himself, whose thirst for revenge almost derails the plan several times.



** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the figurehead Queen of the nations unified under Romefeller's banner, and she accepted. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war. [[spoiler: And when they ''did'' finally manage to checkmate her, the one who took over was... [[MagnificentBastard Treize Khushrenada]].]]

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** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the [[PuppetKing figurehead Queen of the nations unified under Romefeller's banner, banner]], and she accepted.accepted to protect the remaining citizens. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war. [[spoiler: And when they ''did'' finally manage to checkmate her, the one who took over was... [[MagnificentBastard Treize Khushrenada]].]]



* In ''Anime/PrincessTutu'' '''Ahiru''' is this to Drosselmeyer. Made more ironic by the fact ''he'' was the one to bring her into the story to get it moving. It did; it the direction ''[[EarnYourHappyEnding opposite]]'' to what he wanted.

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* In ''Anime/PrincessTutu'' '''Ahiru''' is this to Drosselmeyer. Made more ironic by the fact ''he'' was the one to bring her into the story to get it moving. It did; it did... in the direction ''[[EarnYourHappyEnding opposite]]'' to what he wanted.
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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which now involves nearly every major power in the world in some form, wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it…though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat.

to:

** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which now involves escalated to involve nearly every major power in the world in some form, wouldn't form—Shichibukai, Yonko, the Marines, the World Government, and the Revolutionary Army—wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it…though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat.
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** [[IdiotHero Luffy]] honestly doesn't care about the [[TheGovernment World Government's]] rule, or for that matter any of the {{Big Bad}}s he faces. He just won't let anyone he cares about get hurt and will go to any lengths to protect his TrueCompanions. Hence his defeat of two out of [[PsychoForHire Seven Warlords of the Sea]], the destruction of Enies Lobby, and the assault upon the [[AristocratsAreEvil most powerful jerkasses]] in the world. Soon afterwards we add [[spoiler:the first successful mass-jail break from [[TheAlcatraz Impel Down]] and his assault upon the Marine HQ, just to save his big brother from being executed.]] The surrounding politics and larger conflict don't enter his mind at all.

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** [[IdiotHero Luffy]] honestly doesn't care about the [[TheGovernment World Government's]] rule, or for that matter any of the {{Big Bad}}s he faces. He just won't let anyone he cares about get hurt and will go to any lengths to protect his TrueCompanions. Hence his defeat of two out of the [[PsychoForHire Seven Warlords of the Sea]], Sea]],[[note]]''Three'' as of Chapter 791[[/note]] the destruction of Enies Lobby, and the assault upon the [[AristocratsAreEvil most powerful jerkasses]] in the world. Soon afterwards we add [[spoiler:the first successful mass-jail break from [[TheAlcatraz Impel Down]] and his assault upon the Marine HQ, just to save his big brother from being executed.]] The surrounding politics and larger conflict don't enter his mind at all.
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* In ''Anime/SuperDimensionFortressMacross'', the Zentradi plans to capture the SDF-1 ''Macross'' would have succeeded without a hitch were it not for the unpredictable fighting methods of the defenders, as well as the GlamorousWartimeSinger Lynn Minmay who is ''insanely'' good at rising the heroes's morale.

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* In ''Anime/SuperDimensionFortressMacross'', the Zentradi plans to capture the SDF-1 ''Macross'' would have succeeded without a hitch were it not for the unpredictable fighting methods of the defenders, as well as the GlamorousWartimeSinger Lynn Minmay who is ''insanely'' good [[MusicForCourage at rising the heroes's morale.]]

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*** If it wasn't for Rain "borrowing" the Rising Gundam during the Finals, [[spoiler:Wong's plan to kill Domon and install ''Allenby'' in the Devil Gundam might well have succeeded. Instead, Rain took her down without killing her and removed the DG cells, which later allowed Allenby to help Domon free Rain from the Devil Gundam.]]
** In ''Anime/MobileSuitGundamSEEDDestiny'', Durandal ends up throwing a spanner towards himself and his Destiny Plan by trying to assassinate Lacus Clyne. Had he not decided that Lacus had to die, then Lacus's boyfriend Kira and the ''Archangel'' crew wouldn't have gotten back together to stop the new war that just started, and may had even ''accepted'' the Destiny Plan.

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*** If it wasn't for Rain "borrowing" the Rising Gundam during the Finals, [[spoiler:Wong's plan to kill Domon and install ''Allenby'' as the ApocalypseMaiden in charge of the Devil Gundam might well have succeeded. Instead, Rain [[DefusingTheTykebomb took her Allenby down without killing her]] and then her and father removed the DG cells, which later allowed Allenby to help Domon free Rain from the Devil Gundam.]]
*** Even more: [[spoiler: Rain's father Dr. Mikamura used to be in league with the bad guys. When [[DaddysGirl his beloved]] [[MoralityPet Rain]] found out and called him out, [[EvenEvilHasLovedOnes Mikamura]] [[MyGodWhatHaveIDone realised how terrible all of this was]] and decided to [[HeelFaceTurn turn tails on the villains]], which led to Rain taking Allenby out of Wong's plans.]] And ''then'', [[spoiler: when Rain was seized as the ApocalypseMaiden instead, a fatally wounded Mikamura managed to alert Domon and his friends of the upcoming danger ''and'', in his dying throes, released the capsule containing Domon's cryogenized father, which deprived [[BigBad Ulube]] from his ''other'' hostage and gave Dr. Kasshu the chance to help as well.]]
** In ''Anime/MobileSuitGundamSEEDDestiny'', Durandal ends up throwing a spanner towards himself and his Destiny Plan by ''repeteadly'' trying to assassinate Lacus Clyne. Had he not decided that Lacus had to die, then Lacus's boyfriend Kira and Kira's friends in the ''Archangel'' crew wouldn't have gotten back together to stop the new war that just started, and may had even ''accepted'' the Destiny Plan.



** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the figurehead Queen of the nations unified under Romefeller's banner, and she accepted. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war.

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** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the figurehead Queen of the nations unified under Romefeller's banner, and she accepted. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war. [[spoiler: And when they ''did'' finally manage to checkmate her, the one who took over was... [[MagnificentBastard Treize Khushrenada]].]]



* In ''Manga/AnatoliaStory'', Queen Nakia needs a special girl's blood to perform a powerful BloodMagic that will kill her stepson Kail and give her the chance to make her own son Juda the heir to the Hitite Empire. Too bad that the girl she brought into Hattusa as her prospect HumanSacrifice, Yuri Suzuki, turned out to a PluckyGirl who decided to fight back to protect herself, the became the concubine of the same prince Nakia wanted to murder, and she not only ended up becoming Nakia's strongest rival but also one of the most influential people in the nation.

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* In ''Manga/AnatoliaStory'', Queen Nakia needs a special girl's blood to perform a powerful BloodMagic that will kill her stepson Kail and give her the chance to make her own son Juda the heir to the Hitite Empire. Too bad that the girl she brought into Hattusa as her prospect HumanSacrifice, Yuri Suzuki, turned out to be a naive but very fast-learning PluckyGirl who decided to fight back to protect herself, the then became the concubine of the same prince Nakia wanted to murder, and she not only ended up becoming Nakia's strongest rival but also one of the most influential people in the nation.
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** In the WholeEpisodeFlashback of manga chapters 921-924, [[spoiler: Shinichi himself was one of these ''at the age of four''. In his attempts to befriend a just as young Ran in his new daycare, he briefly caught a weird expression in the face of the daycare worker in charge. He mentioned that as well as other details in front of his parents, which allowed his GuileHero dad Yusaku to realize that the teacher and his IllGirl wife were planning to ''kidnap Ran and raise her as their own "child"'', trying to get her to become the ReplacementGoldfish of their missing daughter. Yusaku soon confronted the teacher, told him that he knew everything, convinced him to turn himself in, helped him find the daughter, and Ran was saved... all because [[ChildProdigy Shinichi]] made his first deductions right in the perfect moment.]]

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** In the WholeEpisodeFlashback of manga chapters 921-924, [[spoiler: Shinichi himself was one of these ''at the age of four''. In his attempts to befriend a just as young Ran in his new daycare, he briefly caught [[NightmareFace a weird expression weird]] [[OhCrap expression]] in the face of the daycare worker in charge. He mentioned that as well as other details in front of his parents, which parents in what seemed to be just a display of childish jealousy... but allowed his GuileHero dad Yusaku to realize that the teacher and his IllGirl wife were planning to ''kidnap Ran and raise her as their own "child"'', trying to get her to become "child"'' so she'd be the ReplacementGoldfish of their missing runaway daughter. Yusaku soon confronted alerted the teacher, told him that he knew everything, police (including Ran's father), had the wife and her brother arrested, convinced him the teacher to turn himself in, helped him find in willingly in exchange for being reunited with the missing daughter, and Ran was saved... ultimately saved -- all because [[ChildProdigy Shinichi]] made his first deductions right in the perfect moment.]]
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** Smith sending a helicopter to shoots down the truck delivering GSX to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving the car to safety.
** A sabotage on Hayato before Niseko GP gets ruined when Ohtomo Johji, a veteran friendly driver, happens to be out to practice that night as well.

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** Smith sending a helicopter to shoots shoot down the truck delivering GSX to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving the car to safety.
** A sabotage on Hayato before the Niseko GP gets ruined when Ohtomo Johji, a veteran friendly driver, happens to be out to practice that night as well.
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** In the WholeEpisodeFlashback of manga chapters 921-924, [[spoiler: Shinichi himself was one of these ''at the age of four''. In his attempts to befriend a just as young Ran in his new daycare, he briefly caught a weird expression in the face of the daycare worker in charge. He mentioned that as well as other details in front of his parents, which allowed his GuileHero dad Yusaku to realize that the teacher and his IllGirl wife were planning to ''kidnap Ran and raise her as their own "child"'', trying to get her to become the ReplacementGoldfish of their missing daughter. Yusaku soon confronted the teacher, told him that he knew everything, convinced him to turn himself in, helped him find the daughter, and Ran was saved... all because [[ChildProdigy Shinichi]] made his first deductions right in the perfect moment.]]
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** [[spoiler:The Second Greed]] to Father, who certainly wasn't expecting him to [[spoiler:regain his old memories and betray him a second time]]. Not only does [[spoiler:Greed betray Father]] but he also [[spoiler:joins the heroes to fight against him]]. [[spoiler:Greed]] managed to weaken Wrath (greatly helping Scar) and helped the Briggs soldiers hold the Central fort. He was also crucial in the final battle as he managed to [[spoiler:absorb some of Father's souls and distracted him long enough for the heroes to make him use up his Philosopher's Stone shield]]. Most importantly, after [[spoiler:being [[YouWillBeAssimilated absorbed]] by Father (who at this point, still couldn't die due to his regeneration abilities), Greed '''greatly''' [[AssimilationBackfire damages him]] by using his carbonization powers to turn Father's shell into [[MadeOfPlasticine charcoal]], thereby rendering Father unable to regenerate. All that was needed left to destroy Father afterwards was a single punch from Edward]].

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** [[spoiler:The Second Greed]] to Father, who certainly wasn't expecting him to [[spoiler:regain his old memories and betray him a second time]]. Not only does [[spoiler:Greed betray Father]] but he also [[spoiler:joins the heroes to fight against him]]. [[spoiler:Greed]] managed to weaken Wrath (greatly helping Scar) and helped the Briggs soldiers hold the Central fort. He was also crucial in the final battle as he managed to [[spoiler:absorb some of Father's souls and distracted him long enough for the heroes to make him use up his Philosopher's Stone shield]]. Most importantly, after [[spoiler:being [[YouWillBeAssimilated [[TheAssimilator absorbed]] by Father (who at this point, still couldn't die due to his regeneration abilities), Greed '''greatly''' [[AssimilationBackfire damages him]] by using his carbonization powers to turn Father's shell into [[MadeOfPlasticine charcoal]], thereby rendering Father unable to regenerate. All that was needed left to destroy Father afterwards was a single punch from Edward]].
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** On a Niseko GP, Bootsvorz's first attempt to crash out the car gets ruined by Hayato's sudden pit entry for a set of rain tire. An unexpected rainfall that follows causes him - running on slick - to spin out.

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** On a the Niseko GP, Bootsvorz's first attempt to crash out the car gets ruined by Hayato's sudden pit entry for a set of rain tire. An unexpected rainfall that follows causes him - running on slick - to spin out.



** In Brazillain GP, Bootsvorz gets into a perfect spot to take down GSX, but he doesn't expect a rival driver Knight Shoemach to [[HeroicSacrifice deliberately crash him out at the last second]] to protect it.

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** In Brazillain the Brazilian GP, Bootsvorz gets into a perfect spot to take down GSX, but he doesn't expect a rival driver Knight Shoemach to [[HeroicSacrifice deliberately crash him out at the last second]] to protect it.
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* ''Anime/FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillain Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random mishaps:
** Smith sends a helicopter to shoots down the truck delivering it to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving the car to safety.
** A sabotage on Hayato before Niseko GP gets ruined when Ohtomo Johji, a veteran friendly driver, is also out to practice that night.

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* ''Anime/FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillain Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random unexpected mishaps:
** Smith sends sending a helicopter to shoots down the truck delivering it GSX to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving the car to safety.
** A sabotage on Hayato before Niseko GP gets ruined when Ohtomo Johji, a veteran friendly driver, is also happens to be out to practice that night.night as well.



** His second attempt also gets ruined because a random car gets out of a mud trap and block the gap between to two machine. The heavy rain causes him and the said car to crash each other out.
** In Brazillain GP, Bootsvorz almost gets takes GSX when a rival driver Knight Shoemach [[HeroicSacrifice deliberately crashes him out at the last second]] to protect it.

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** His second attempt also gets ruined because a random car gets out of a mud trap and block blocks the gap between to two machine.machines. The heavy rain causes him and the said car to crash each other out.
** In Brazillain GP, Bootsvorz almost gets takes GSX when into a perfect spot to take down GSX, but he doesn't expect a rival driver Knight Shoemach to [[HeroicSacrifice deliberately crashes crash him out at the last second]] to protect it.
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* ''Anime/FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillan Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random mishaps:

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* ''Anime/FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillan [[PunchClockVillain Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random mishaps:
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* ''FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillan Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random mishaps:

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* ''FutureGPXCyberFormula'': ''Anime/FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillan Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random mishaps:

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** Smith sends a helicopter to shoots down the truck's delivering it to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving it to safety.

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** Smith sends a helicopter to shoots down the truck's truck delivering it to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving it the car to safety.safety.
** A sabotage on Hayato before Niseko GP gets ruined when Ohtomo Johji, a veteran friendly driver, is also out to practice that night.


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** In Brazillain GP, Bootsvorz almost gets takes GSX when a rival driver Knight Shoemach [[HeroicSacrifice deliberately crashes him out at the last second]] to protect it.
** Smith's personal attempt at taking out both Shoemach and Bootsvorz gets spoiled when Hayato, driving GSX into a shortcut, jumps out of nowhere and scares him, indirectly leading him to his death.
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* ''FutureGPXCyberFormula'': [[CorruptCorporateExecutive Smith]] and [[PunchClockVillan Bootsvorz]]'s plans to steal [[SuperPrototype Asurada GSX]] get folded multiple times of time due to random mishaps:
** Smith sends a helicopter to shoots down the truck's delivering it to Team Sugo gets sabotaged by a 14-year-old boy on a motorcycle who gets unhurt and capable or driving it to safety.
** On a Niseko GP, Bootsvorz's first attempt to crash out the car gets ruined by Hayato's sudden pit entry for a set of rain tire. An unexpected rainfall that follows causes him - running on slick - to spin out.
** His second attempt also gets ruined because a random car gets out of a mud trap and block the gap between to two machine. The heavy rain causes him and the said car to crash each other out.
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* In ''LightNovel/{{Durarara}}'', one of the main reasons [[ManipulativeBastard Izaya]] hates Shizuo so much is because his emotional volatility, TooDumbToFool nature, and firmly sustained belief that Izaya is responsible for 99.9% of everything that goes wrong in Ikebukuro makes him liable to become one at any moment. [[spoiler:Shizuo ends up doing exactly this in volume 6, when Izaya's attempt to frame Shizuo and get him out of the way for the moment doesn't go quite as planned and instead brings even ''worse'' people down on Izaya's head]].

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* In ''LightNovel/{{Durarara}}'', one of the main reasons [[ManipulativeBastard Izaya]] hates Shizuo so much is because his emotional volatility, TooDumbToFool nature, and firmly sustained belief that Izaya is responsible for 99.9% of everything that goes wrong in Ikebukuro makes him liable to become one at any moment.moment -- because all of it makes him immune to Izaya's manipulations. [[spoiler:Shizuo ends up doing exactly this in volume 6, when Izaya's attempt to frame Shizuo and get him out of the way for the moment doesn't go quite as planned and instead brings even ''worse'' people down on Izaya's head]].
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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which now involves nearly every major power in the world in some form, wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to turn to shit just so he can kill the man who murdered the most important person in his life, then so be it.

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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which now involves nearly every major power in the world in some form, wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to turn to shit spiral into chaos just so he can kill the man who murdered the most important person in his life, then so be it. it…though it's revealed in some chapters that he also seems to want the aftershock he knows will follow Doffy's defeat.
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** In the Dressrosa Arc, Donquixote Doflamingo hatches what looks like the perfect trap to destroy the Straw Hats with, knowing that he can't underestimate Luffy's crew. However, outside factor after outside factor helps the Straw Hat Pirates out, rendering it all moot. The Tontattas, whose people were enslaved by the Donquixote Family, provide intel on the location of the Smile Factory and the identity of the power-user maintaining control over the country's LivingToys. A familiar face from the past shows up at the colosseum (and he probably wouldn't have shown up without the tournament Doflamingo created to trap Luffy) to switch places with Luffy, allowing him to attack Doflamingo's castle undetected. But the biggest spanners came from Doffy's own crew: his officer Violet, who maintained a façade of loyalty since the time she was blackmailed into joining, falls for Sanji's chivalry and switches sides. Jora, on the tail-end of her capturing the ''Thousand Sunny'', lets her guard down long enough for Brook to pull a YouAreAlreadyDead. Bellamy helps Luffy escape the colosseum because Doffy decided to have him killed. And most of all, there's Sugar, the one turning people into toys. Her being knocked unconscious is the only way for the guise over Dressrosa to be lifted, but no one can get near her. Usopp is captured, but instead of turning him into a toy like the others, she feeds him a grape she believed to be poisoned… which was actually hellishly spicy, and the resulting JumpScare / NightmareFace causes her to faint in shock. Consequently, Doflamingo's precious {{Masquerade}} is shattered, the country sees him for the evil person he truly is, and he's forced to take the most drastic measures that he can.

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** In the Dressrosa Arc, Donquixote Doflamingo hatches what looks like the perfect trap to destroy the Straw Hats with, knowing with. See, this guy isn't your average villain; not only is he an extremely skilled and powerful [[TheChessmaster Chessmaster]] and ManipulativeBastard, he's also DangerouslyGenreSavvy enough to know that he can't underestimate underestimating Luffy's crew.crew would be a fatal mistake. However, outside factor after outside factor helps the Straw Hat Pirates out, rendering it all moot. The Tontattas, whose people were enslaved by the Donquixote Family, provide intel on the location of the Smile Factory and the identity of the power-user maintaining control over the country's LivingToys. A familiar face from the past shows up at the colosseum (and he probably wouldn't have shown up without the tournament Doflamingo created to trap Luffy) to switch places with Luffy, allowing him to attack Doflamingo's castle undetected. But the biggest spanners came from Doffy's own crew: his officer Violet, who maintained a façade of loyalty since the time she was blackmailed into joining, falls for Sanji's chivalry and switches sides. Jora, on the tail-end of her capturing the ''Thousand Sunny'', lets her guard down long enough for Brook to pull a YouAreAlreadyDead. Bellamy helps Luffy escape the colosseum because Doffy decided to have him killed. And most of all, there's Sugar, the one turning people into toys. Her being knocked unconscious is the only way for the guise over Dressrosa to be lifted, but no one can get near her. Usopp is captured, but instead of turning him into a toy like the others, she feeds him a grape she believed to be poisoned… which was actually hellishly spicy, and the resulting JumpScare / NightmareFace causes her to faint in shock. Consequently, Doflamingo's precious {{Masquerade}} is shattered, the country sees him for the evil person he truly is, and he's forced to take the most drastic measures that he can.

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** In the Dressrosa Arc, Donquixote Doflamingo hatches what looks like the perfect trap to destroy the Straw Hats with, knowing that he can't underestimate Luffy's crew. However, outside factor after outside factor helps the Straw Hat Pirates out, rendering it all moot. The Tontattas, whose people were enslaved by the Donquixote Family, provide intel on the location of the Smile Factory and the identity of the power-user maintaining control over the country's LivingToys. A familiar face from the past shows up at the colosseum (and he probably wouldn't have shown up without the tournament Doflamingo created to trap Luffy) to switch places with Luffy, allowing him to attack Doflamingo's castle undetected. But the biggest spanners came from Doffy's own crew: his officer Violet, who maintained a façade of loyalty since the time she was blackmailed into joining, falls for Sanji's chivalry and switches sides. Jora, on the tail-end of her capturing the ''Thousand Sunny'', lets her guard down long enough for Brook to pull a YouAreAlreadyDead. Bellamy helps Luffy escape the colosseum because Doffy decided to have him killed. And most of all, there's Sugar, the one turning people into toys. Her being knocked unconscious is the only way for the guise over Dressrosa to be lifted, but no one can get near her. Usopp is captured, but instead of turning him into a toy like the others, she feeds him a grape she believed to be poisoned…which was actually hellishly spicy, and the resulting JumpScare / NightmareFace causes her to faint in shock. Consequently, Doflamingo's precious {{Masquerade}} is shattered, the country sees him for the evil person he truly is, and he's forced to take the most drastic measures that he can.

to:

** In the Dressrosa Arc, Donquixote Doflamingo hatches what looks like the perfect trap to destroy the Straw Hats with, knowing that he can't underestimate Luffy's crew. However, outside factor after outside factor helps the Straw Hat Pirates out, rendering it all moot. The Tontattas, whose people were enslaved by the Donquixote Family, provide intel on the location of the Smile Factory and the identity of the power-user maintaining control over the country's LivingToys. A familiar face from the past shows up at the colosseum (and he probably wouldn't have shown up without the tournament Doflamingo created to trap Luffy) to switch places with Luffy, allowing him to attack Doflamingo's castle undetected. But the biggest spanners came from Doffy's own crew: his officer Violet, who maintained a façade of loyalty since the time she was blackmailed into joining, falls for Sanji's chivalry and switches sides. Jora, on the tail-end of her capturing the ''Thousand Sunny'', lets her guard down long enough for Brook to pull a YouAreAlreadyDead. Bellamy helps Luffy escape the colosseum because Doffy decided to have him killed. And most of all, there's Sugar, the one turning people into toys. Her being knocked unconscious is the only way for the guise over Dressrosa to be lifted, but no one can get near her. Usopp is captured, but instead of turning him into a toy like the others, she feeds him a grape she believed to be poisoned…which poisoned… which was actually hellishly spicy, and the resulting JumpScare / NightmareFace causes her to faint in shock. Consequently, Doflamingo's precious {{Masquerade}} is shattered, the country sees him for the evil person he truly is, and he's forced to take the most drastic measures that he can.


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** In a non-Straw Hat example, we have Trafalgar Law. The Dressrosa arc, which now involves nearly every major power in the world in some form, wouldn't have even ''happened'' if it weren't for him in the first place. His alliance with Luffy really did "shake the world" as the papers said, as it put the Straw Hats in the path of the Donquixote Family, leading to all of the above, and the gradual destruction of Donquixote Doflamingo's criminal empire. The thing is, Law, much like Luffy in that regard, doesn't care about ''any'' of it. The ultimate purpose of all his actions, including continuing to live to this very day, for the last ''thirteen years'', has been to kill Doflamingo. If the world has to turn to shit just so he can kill the man who murdered the most important person in his life, then so be it.
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* ''Anime/{{Daimos}}'': Olban's plan for world domination started to unravel when Maradon, a gardener, found out he [[spoiler:was responsible for the previous Emperor's assassination]].
* ''Manga/DeathNote'' has a few:
** Teru Mikami screwed up by going for his notebook when Kiyomi Takada was kidnapped by Mello, which lead Near to the notebook ... If it hadn't been for this one mistake, which allowed Near to successfully replace the notebook with a fake, Light would have won. Unusually for a Spanner, this wasn't a result of stupidity but of Mikami thinking ''too much'' like Light: he did exactly what Light would've done in his situation, with the limited information available. In the manga, Light even acknowledges this.
** Misa Amane:
*** She gummed up the works all the time, but without Misa, there'd be no Rem, and then who knows how long Light would be desperately scrambling for a way to push L out of the way to his New World.
*** Misa is also a spanner for L, since up until the point that Rem and her were introduced, there was no way for Light to kill L, since he couldn't find out L's real name without the [[GlowingEyesOfDoom shinigami eyes.]]
** Shidou:
** A fairly stupid shinigami, is partly responsible for Mello's escape from the police raid, because he sat still and did exactly what he'd been told to do, rather than taking his Death Note back the minute its current owner died, which would have meant that Mello couldn't have his "give me the notebook" scene.
*** That wasn't the worst thing he did. The worst thing he did was wrecking Light and Misa's alibi by revealing the fake Death Note rules. Had that not happened, even if Near suspected Light he would have no base for his suspicion, and Light would not have handed over Misa's Death Note to Mikami. And in true DidntSeeThatComing fashion, Light didn't even learn about Shidou's existence until the damage was already done. Any other instance on this page either would not have happened or could not have damaged Light's plans if Shidou hadn't done that. It wasn't as though that would have saved Light. After all L was already going to test and see if the fake rules were legit and Near would've done the same. The only thing that occurred because of him is that they didn't have to perform the test.
** While we're at it, we can't forget the damage to Light's plans done by his own dad Soichirou, whose attempt to bring Mello in the old fashioned way rather than kill him right then and there led to Mello's survival of the police raid, which eventually led to the incident with Mikami described above.
** Mello in the anime certainly counts as a non-stupid example. The purpose of adding him to the show was to add someone straightforward and somewhat reckless to wreck the other main characters' quiet, roundabout and complicated plans. There ''is'' a simple, unexpected genius in just driving up in a motorcycle, tossing smoke grenades into the crowd and ''grabbing'' your target instead of laying an elaborate trap, now isn't there?
*** Mello was sort of a reverse Spanner, or perhaps [[{{Metaphorgotten}} a spanner used properly instead of being thrown into the works]], in that his actions did not ''screw up'' Light's plans directly but rather led Near to ''perfect'' his plans.
**** Without Mello being the spanner in someone's works, [[GambitPileup Near and Light would have continued planning and counter-planning with no end in sight.]] That's why Near said that him and Mello together were better than L; Near could make the plans and Mello could prevent any countering of those plans.
**** Better is a bit of opinion felt on Near's part. L already gave them the structure to finish the case. After all they didn't have to start from scratch like he did. Plus, L nearly had the case solved on his own. It took a manipulated shinigami to take him down. In fact, it wouldn't have taken Near and Mello to solve the case if someone had the guts to '''A:''' Check and see if the fake rules were legit, and '''B:''' Keep an eye on Light and Misa. The only edge they had was the fact they were 2 people rather than 1.
* Mugen from ''Anime/SamuraiChamploo'' is a prime example. In the first episode, Mugen dispatches a horde of mooks and then approaches their boss, who then explains to Mugen how he is the son of the town's corrupt governor. Any attempts to harm the son of an important official will be a death sentence. He then confidently asks Mugen if he got all that. Mugen responds with, "Not a word," and then attacks him.
** Mugen also manages to thwart a hostage situation simply because he was only interested in getting his kicks fighting and couldn't care less about the hostages.
* Similarly, [[InspectorOblivious Mihoshi]] from ''Anime/TenchiMuyo'' actually has a distinguished service record with the Galaxy Police, but the backstory indicates it's largely a result of her bumbling in and causing too much chaos for any dastardly plan to hold up.
** In the original {{O|riginalVideoAnimation}}VA it was suggested she actually had had a mental breakdown from being overworked which turned her from a top cop into a comic ditz -- as hinted by Kagato's comment about her past exploits. (And he should know, since Mihoshi's meddling [[spoiler: led to the release of Washu, whom [[CrystalPrison he held hostage]] ''in a PocketDimension'' that no one but Kagato knew of'', and yet Mihoshi somehow got there with ease.]]) Later versions, though, lack this detail and instead are all just lucky enough to be teamed up with Kiyone, who usually can get the job done in spite of Mihoshi. Yet as evidenced by her enormous reports, Mihoshi still seems ridiculously thorough.
** In ''Anime/TenchiInTokyo'', we have ''three'' of these: Washu, because the villains always tend to underestimate her, and in this case this lets her [[spoiler: lock herself in her laboratory to decode Yugi's plans without anyone disturbing hr]]; [[spoiler: Sasami]], because [[spoiler: Yugi got distracted by her desire to keep her out of her schemes since she's her MoralityPet]] (and this is pointed out by [[spoiler: Matori]], ''twice''); and '''specially''' [[spoiler: Sakuya, who despite being Yugi's "shadow", in the end turns out to be more independent than she should've been, and ends up breaking through a LotusEaterMachine that keeps Tenchi away, and then sends him back to fight Yugi.]]
** In the first Tenchi movie, ''Tenchi Muyo In Love'', Washu's plan to capture KAIN and prevent him from killing Achika gets derailed when KAIN decides [[TakingYouWithMe if he goes, he's taking Achika with him.]] It gets worse when Noboyuki is dragged along, too.
*** To that end, KAIN's own plan is derailed when he [[KickTheDog decides to toy with both Achika and Noboyuki]]. [[ViolentlyProtectiveGirlfriend Achika]] seeing Noboyuki's beaten body and the poor guy ''still'' devoted to trying to make her happy even in his state is enough to awaken her power when she goes into a TranquilFury.
* ''Anime/MazingerZ'', ''Anime/GreatMazinger'', and ''Anime/{{Mazinkaiser}}'' would be so much more different had [[JokeCharacter Boss]] not interfered with the baddies plans. To clarify:
** In ''Anime/MazingerZ'', thanks to [[MemeticMutation Brocken]] [[CrowningMomentOfFunny Ball]], Koji is able to rescue the kidnapped civilians. Not to mention the fact that in the same series, he saved Koji's life several times, gaining Koji's respect in the process. And in the ''Mazinger-Z versus Great General of Darkness'', as a squad of Mykene Warrior Monsters are trashing Mazinger-Z he suddenly interfered. He only deterred them for several seconds, but those seconds were all that [[spoiler:Tetsuya needed to intervene with Great Mazinger and save Kouji's life. And because Kouji did not die, he could help to save the world in ''Anime/GreatMazinger'' and ''Anime/UFORoboGrendizer''.]]
** In ''Anime/GreatMazinger'', if he would have not flirted with Jun and followed her when she was buying clothes, the good guys would be dead by the THIRD chapter.
** In the ''Anime/{{Mazinkaiser}}'' movie, he pretty much saved the world (or at least what's left, since at that point is a CrapsackWorld). The Mycene's plan to send one of their general to attack Koji while he is out of Mazinkaiser is completely foiled because Boss attacked the general [[{{Irony}} with Boss Borot]].
* In ''Anime/NeonGenesisEvangelion'', everything is going perfectly for Gendo, until Rei FINALLY gets some self-awareness and realises that no matter how fucked up Shinji is, he would '''still''' be a better choice for godhood than a) the lunatic standing with his hand in her chest (literally) b) the group of lunatics who are killing everyone Rei has ever known. So the world is destroyed, recreated and in the end everyone who want to live is allowed to live. [[GainaxEnding Or SOMETHING...]]
* In ''Anime/SuperDimensionFortressMacross'', the Zentradi plans to capture the SDF-1 ''Macross'' would have succeeded without a hitch were it not for the unpredictable fighting methods of the defenders, as well as the GlamorousWartimeSinger Lynn Minmay who is ''insanely'' good at rising the heroes's morale.
* In ''VisualNovel/HigurashiWhenTheyCry,'' [[spoiler:the only arcs in which the village is safe are Watanagashi and Meakashi because Shion kills Rika in secret, and so the mass gassing can't take place within the time that it would take for the virus to incubate, and by the time they did figure out that Rika was dead, oops, it doesn't look like the villagers are going to kill each other after all]]. This doesn't really make things better for the main characters, though. After all, most of them are still dead. It does, however, clue a mysterious third party in on what's going on; the one aware of the GroundhogDayLoop.
* The titular ''Anime/IrresponsibleCaptainTylor'' is either the dictionary definition of this trope or the most brilliant and subtle [[TheChessmaster Chessmaster]] in the entire show, depending on how you look at it.
* ''The cat'' in ''Anime/CodeGeass'' nearly succeeds at exposing Lelouch and wrecking all his plans simply by accidentally getting its head stuck in his Zero mask and wandering off with it. Before long, the entire boarding school has caught wind that Lelouch is chasing a cat across campus and the situation balloons into a race against time as Milly Ashford, the mischievous president of the [[AbsurdlyPowerfulStudentCouncil student council]], offers a bounty to anyone who can catch the cat and obtain the "embarrassing secret" she assumes it's carrying.
** Ironically, Lelouch could count as ''his own'' Spanner: on multiple occasions, his attachment to his friends (especially Suzaku or Shirley, but '''especially''' his sister Nunnally) have caused him to make moves that jeopardize his plans or even ''the entire rebellion'' he leads. The first occurrence in R1 is where he [[spoiler: lets Villetta live, because he thought she was no danger to him]]. When was that? Second episode. The big ones are where he [[spoiler: ignores his own unstable Geass, leading to the death of Euphemia as he geasses her into becoming a GenocidalManiac and then has to shoot her dead to stop her]], and where he abandoned his followers for his kidnapped sister shortly afterward which ''greatly'' weakened their position, his trait continued on in R2. This came to the logical conclusion [[spoiler:when his RoaringRampageOfRevenge for the murder of Shirley, carried out against a cult whose members included scientists and children, which ended up being a large part of Prince Schneizel's efforts to turn the Black Knights against him - the centerpiece being the fact that their beloved leader possesses a MindControl eye and quite possibly forced them all into obedience (he didn't, probably because he's smart enough not to mis-use such power that only works once).]]
** Suzaku Kururugi is both this and an UnwittingPawn. When [[spoiler:Marianne brought him to the Sword of Akasha (possibly thinking he'd side with her out of love for her stepdaughter Euphemia, or because of his friendship with her "vessel" Anya Alstreim)... he sided with ''Lelouch'' instead.]] Not only that, but he messes up Schneizel's plans, as well: [[spoiler: Schneizel was planning to eventually kill off his father and become Emperor, but Suzaku realised this and volunteered to help... right in front of several GenreSavvy subordinates who were very worried about doing something like that, including Cornelia (who had never considered such a thing, but went along with the idea anyway)... and Gino Weinberg aka Knight of Three, who's highly loyal to the Emperor. Who escaped with his mecha and told Bismarck Waldstein, the Emperor's personal sword.]] This made Schneizel's attempt to blame it on Lelouch or the Black Knights completely impossible.
** Villetta is really one of the biggest ones for Lelouch, as she figures out his identity as Zero early on (not to mention her part in Shirley's [[TraumaCongaLine emotional descent]], becomes part of the Britannian security detail spying over Lelouch due to her knowledge of and arguably immunity to Geass, and is later a key part of the betrayal in R2 19, as she is the convincing factor for Ohgi, and subsequently the rest of the Black Knights, even with a cursory amount of evidence of Geass (with respect to the truth). The latter of which ends up pushing Lelouch towards the [[ThanatosGambit Zero Requiem]].
*** And why does she become such a problem? [[spoiler: Because Lelouch couln't bring himself to kill a woman who is unarmed and, by that moment, no threat to him.]] Bad decision, there.
** One of the biggest would have to be Princess Euphemia. When Brittanian occupiers were murdering Japanese civilians by the dozens and prett much enslaving those who survived, it was easy for Lelouch's [[LaResistance violent revolution]] to gain followers. But then good natured Euphemia [[RoyalsWhoActuallyDoSomething is put in a position of power]]; [[AllLovingHeroine she]] starts treating the Japanese people with respect, tries to find a compromise solution that both Brittania and Japan can live with, and just like that all of Lelouch's popular support goes bye-bye. Lelouch actually '''admits''' defeat to Euphemia, calling her his most formidable opponent.
* Mireille Bouquet of ''Anime/{{Noir}}'' may be the least deadly of the assassin girls in the series (which only means that she has to obey the laws of physics), but her ability to tell the AncientConspiracy that it can go screw itself and her surprising faith in her partner brings down a major portion of it.
* [[spoiler:Midori Sugiura]] from ''Anime/MaiHime'' threw a big wrench in the BigBad's plans to take over/destroy the world through the "winner" of the [[ThereCanBeOnlyOne battle royale]] by enlisting the help of the most unlikely of characters: [[spoiler:Miyu the RobotGirl, whom she rebooted]].
* TheMovie of ''Anime/YesPrecure5'' has the movie's BigBad, Shadow, steal the device the heroines were using to collect the MacGuffin {{Mon}}s of the series, then uses his mirrors to attract every last one of them into the device. With the girls watching, he ends up using it to wish for world domination. It seems that he's won, but... ''nothing happened''. Why? [[spoiler:Urara completely forgot to add the last of the {{MacGuffin}}s to the device, meaning that it's not complete and therefore doesn't work]]. ''Oops!'' The scary part is that the villain, by all accounts, would have ''won'' if Ms. Cure Spanner hadn't messed everything up.
** Cline's zeal to [[YouHaveOutlivedYourUsefulness get rid of those he deems useless to the cause of Labyrinth]] in ''Anime/FreshPrettyCure'' only failed once, and that's because the Akarun [[spoiler:[[DidntSeeThatComing brought Setsuna Higashi (his first target) back to life]] and]] [[HeelFaceTurn transformed Setsuna into one of the Cures]].
** Kage's big plan to defeat the Cures in ''Anime/PrettyCureAllStars New Stage 2'' is derailed because [[Anime/SmilePrettyCure Miyuki]] invited [[Anime/DokiDokiPrecure Mana and her friends]] to the Fairy Academy - his GreatBigBookOfEverything had ''nothing'' on the Doki-Doki team and thus couldn't exploit their TransformationTrinket weakness.
*** Happens again in ''New Stage 3'' - Nozomi's the one who frees the other Cures from their dream worlds, thanks to the fact that [[PluckyGirl she doesn't like being given things on silver platters.]]
* In ''Manga/ChronoCrusade'' Aion admits [[spoiler:that his plan failed because he didn't take Rosette Christopher into account.]] "No one could predict the actions of such a foolhardy young woman!" Of course, in [[AdaptationDecay the anime adaptation]] the main characters are closer to being {{Unwitting Pawn}}s...
* ''Manga/{{Monster}}''. [[spoiler:The perfect suicide that Johan planned as the end of his GambitRoulette is ruined when an alcoholic townsperson angrily shoots him in the side of the head before Dr. Tenma can kill him.]]
* Heroic Gambit Example: Between them, Heiji Hattori and Ai Haibara screw up a plan Manga/DetectiveConan had worked out to get information on the Men in Black. Haibara, despite being an otherwise intelligent and calculating person, felt enough of an obligation to Conan that it made her insistent on going to Conan. She showed up just as the plan was going his way, and when her presence opened the door for everything to get shot to hell. Heiji's role in the Spannering was in deliberately leaving Haibara the means to locate Conan in the first place in case she chose to do exactly what she did.
** Another, more indirect, example has an assassination attempt by the Men in Black foiled because of a little boy who kept "Ding-Dong-Ditching" one of the operatives' homes. This act ultimately put Conan in a position to foil the plot.
** The fifteenth movie has [[spoiler: Touma Tachihara, a boy who wakes up from his years-long ConvenientComa at the worst moment possible for the BigBad because he's the only person able to identify him... since he witnessed the murder he committed in the past. Pretty much the whole movie's plot relays on whether Touma's TraumaInducedAmnesia will be undone or not.]]
* HotBlooded BadassNormal Sanosuke Sagara from ''Manga/RurouniKenshin'' once threw a wrench in MagnificentBastard Shishio's plans by [[spoiler:sneaking close to his battleship and wrecking it with some bombs given by his friend Katsu, an explosives expert. This prevented Shishio from bombing Kyoto. And Shishio openly acknowledged Sanosuke's role in this.]]
* ''Anime/{{Rune Soldier|Louie}}'': The idiotic sorcerer Louie ruins the SecretWeapon when he takes a leak in an unusual spot. After that he punches his way through a impenetrable barrier ruining Plan B as well.
* In ''Manga/{{Basilisk}}'', Princess Oboro may not be able to fight, but she derails [[spoiler: BigBad Tenzen]]'s plans ''thrice''. First, [[spoiler: she tries to interrupt a fight between Koushirou and Gennosuke but accidentally causing Koushirou to [[EyeScream blind himself with his own powers]], limiting Tenzen's physical actions since Koushirou is his NumberTwo]]. Second, [[spoiler: she seals her own [[AntiMagic Piercing Eyes]] to avert using her powers against her clansmen again, but ''also'' preventing Tenzen from using said powers for his sole benefit.]] And third, [[spoiler: her eyes are de-sealed when ''Tenzen is reviving himself after Gennosuke kills him'', nullifying his {{Immortality}} and killing Tenzen for good]]. And in the end she also [[spoiler: derails Ofuku's plans via commiting an HeroicSuicide instead of killing a completely indefense Gennosuke, sending her into a ''mighty'' VillainousBreakdown.]]
* ''Anime/AshitaNoNadja'' has the main protagonist as this. [[spoiler:When their SmugSnake boss Hermann betrays them, Rosso and Bianco ruin his plans as they let a kidnapped Nadja escape and tell her where to find their reports. Nadja not only gets away and finds the reports, but is the one who manages to give them to the authorities and soon Hermann is thrown in jail for attempted murder ''and'' his own massive debts.]]
** Also, [[spoiler:Hermann]] thought that hiring [[spoiler:Rosemary]] as [[spoiler:Nadja's BodyDouble]] would give him an advantage. WRONG! [[spoiler:Rosemary, despite being just 13 years old, proved to be much smarter and more independent than Herman believed, flat-out telling him that if he tried to discard her, she'd reveal their plans and he'd go down with her.]] Suck on ''that'', SmugSnake.
* In ''Manga/{{Naruto}}'', BigBad Tobi outright calls Naruto one of these after he defeated Pain and convinced him and Konan to turn against Akatsuki, which led to Tobi losing Pain's resurrection technique, Amegakure's support, and the technique needed to seal the two remaining tailed beasts into the Gedo Mazo.
** Killer Bee also threw a spanner in Akatsuki's plans, when he faked his own capture to ''go on a vacation''. He does it again, when he foils Kisame's attempt to capture him, helped with Kisame's sword betraying him and Killer Bee's brother [[BigDamnHeroes turning up to save him]]. However, it later turns out that [[spoiler: Kisame throwing away the fight was all part of the plan.]]
** Sasuke is one to Itachi's plan, which was ironically meant to keep Sasuke safe. Sasuke's actions lead to the exact opposite of what Itachi had planned for him, culminating in [[spoiler: him becoming a criminal wanted by two villages.]]
** Tobi becomes a spanner to Itachi's plans, as after Itachi's death, he starts revealing Itachi's secrets to people that he wanted to hide them from.
** Itachi has foiled or complicated the plans of nearly every single person or organization he's come across in the series. In chronological order, [[spoiler: the Uchiha clan's plan to revolt against Konoha, Danzo's plan of taking over Konoha, Orochimaru's plan of stealing Itachi's Sharingan eyes and later preventing him from taking over Sasuke's body, Team 7's attempts to rehabilitate Sasuke (in order to preemptively foil any plans Danzo might have after the Third Hokage's death), Akatsuki's plans as TheMole, a failed attempt to foil Tobi's plan to brainwash Sasuke. Even the ''resurrected'' Itachi foils Kabuto's plans by sealing the resurrected Nagato, and then traps Kabuto himself in an infinite loop.]] Phew! He also foils ''his own plans'' for Sasuke multiple times by [[spoiler: needlessly messing up with an already vengeful Sasuke's mind]].
** [[spoiler: The real Madara]] escapes from [[spoiler: Edo Tensei's release]] becoming immortal with infinite chakra and stamina, having already [[CurbStompBattle blown away]] much of the Shinobi Alliance without breaking a sweat ''before'' the aforesaid escape.
** Tobi puts a spanner in [[spoiler: the real Madara's]] plan as he decides to execute the plan all by himself.
* Three of the 12 Sisters in ''Anime/CoyoteRagtimeShow'', [[DayOfTheWeekName Oct, Nove, and Diesse]], accidentally sent an enemy ship flying into a bomb capable of an EarthShatteringKaboom... [[spoiler:and nothing happens, revealing the bomb above the planet Graceland to be a fake. Spannered further by the militants who act on this information, who are unaware that the fake bomb was a distraction to keep people from finding the real bomb, which is ''already'' on the planet and was moments away from being disarmed before they killed the people negotiating for it.]]
* ''Manga/KatekyoHitmanReborn'' has a mid-level mechanic incidentally named Spanner that performs a HeelFaceTurn along with [[spoiler:Irie]] in an effort to take down the Future Arc's BigBad Byakuran using his technical knowledge of the base and Millefiore. It would have slightly more effective if Byakuran wasn't an ultimate [[TheChessmaster Chessmaster]] and the in-series King of XanatosSpeedChess forcing the epic battles, struggles and hardships just for his own amusement.
* ''Manga/OnePiece'':
** [[IdiotHero Luffy]] honestly doesn't care about the [[TheGovernment World Government's]] rule, or for that matter any of the {{Big Bad}}s he faces. He just won't let anyone he cares about get hurt and will go to any lengths to protect his TrueCompanions. Hence his defeat of two out of [[PsychoForHire Seven Warlords of the Sea]], the destruction of Enies Lobby, and the assault upon the [[AristocratsAreEvil most powerful jerkasses]] in the world. Soon afterwards we add [[spoiler:the first successful mass-jail break from [[TheAlcatraz Impel Down]] and his assault upon the Marine HQ, just to save his big brother from being executed.]] The surrounding politics and larger conflict don't enter his mind at all.
** As a matter of fact, Luffy and his crew have a tendency to do this wherever they go. Captain Kuro, Crocodile, Eneru, [=CP9=], and Shiki (from ''[[Anime/OnePieceFilmStrongWorld Strong World]]'') all had very elaborate plans that were a stone's throw away from fruition, but then along came Luffy and crew. All of the above made the mistake of underestimating them, and paid dearly for it.
*** They also (unsurprisingly) stumbled upon the villainous plot for Fishman Island on their way to the New World, and thwarted that one as well. It helped that BigBad Hordy Jones, in spite of knowing everything that the Straw Hats had done before their hiatus, dismissed the nine of them as no threat and used EvilGloating to outright provoke them. With exactly ''one'' ally joining the nine Straw Hats to fight, Hordy and his army of 100,000 found themselves on the receiving end of what may be the most devastating CurbStompBattle in the series as a result.
** At the beginning of their journey into the New World, the Straw Hats evade Smoker this way. They were originally planning to go to Raijin island, and [[DangerouslyGenreSavvy Smoker knew they were going there because it was the most dangerous of the New World's first three islands, fitting Luffy's adventurous personality and reckless tendencies]]. However, due to a timely distress call and pure happenstance, they end up going to an island the Log Pose ''didn't even register''. Thus began the Punk Hazard arc, where the crew accidentally stumbled upon ''another'' long term villainous plot and GovernmentConspiracy, that they inevitably wreck. [[HereWeGoAgain Again]]. And this time, they have a live audience to witness it all over the New World.
** Luffy's proficiencies to this trope have been lampshaded during the Impel Down arc, when the jailers have to deal with two simultaneous riots on top of Blackbeard's invasion, both as a result of Luffy sneaking in.
-->'''Magellan:''' Nothing is going our way! How could one intruder spark so much mayhem?!
** Luffy may be the biggest spanner among the Straw Hat Pirates, but Sanji deserves special mention as well; his skills as a tactician often prove to be the linchpin to the Straw Hats' success. Enies Lobby shows his shrewdness in this ''twice''. First, he lures a bunch of Marines and Agents into the back of the train Puffing Tom, then slips past them while they're distracted and ''detaches their cars behind him,'' stranding them and dealing with almost all of the remaining Mooks and one OneManArmy without having to fight them. Then, when the Buster Call arrives at Enies Lobby, he disappears for a while. When he returns, it's revealed he'd been looking for the controls to the Gates of Justice so he can ''close them and throw the Buster Call ships into disarray.''
*** Much earlier, he shows off his skills in the Alabasta saga. First, all the way back in Little Garden, he happens to intercept a call from Mr. 0 and, pretending to be Mr. 3, tricks Baroque Works into thinking Vivi and the Straw Hats are all dead, meaning they don't have to worry about constant pursuit for a while; plus he intercepts an Eternal Pose to Alabasta, meaning the Straw Hats could leave right away rather than wait a year for the Log Pose to reset. Later, in Alabasta itself, all of the other Straw Hats except Chopper have been captured by Crocodile and trapped in a room that will soon be submerged. He uses a bit of trickery to lure Crocodile and his Dragon out of the building and lure them far enough away to give him time to sneak in and set all of them free. He even taunts Crocodile with a note saying "Mr. Prince was here" for when he comes back and discovers that he's been outsmarted.
** In the Assault of Marineford Arc, [[spoiler:Little Oars, Jr.]] caused the Marines strategy for fighting Whitebeard to backfire when his body blocked a piece of a huge siege wall they were trying to activate from rising.
** Buggy also qualifies in that same arc. His desire to grandstand and show off to a world audience led him to capture a video Den Den Mushi (Transponder Snail), meaning that the World Government didn't have total control over what information was getting out of Marineford when they started slaughtering the pirates mercilessly with the Pacifistas, or when Blackbeard betrayed the World Government, indelibly humiliating them in the process.
** In the Dressrosa Arc, Donquixote Doflamingo hatches what looks like the perfect trap to destroy the Straw Hats with, knowing that he can't underestimate Luffy's crew. However, outside factor after outside factor helps the Straw Hat Pirates out, rendering it all moot. The Tontattas, whose people were enslaved by the Donquixote Family, provide intel on the location of the Smile Factory and the identity of the power-user maintaining control over the country's LivingToys. A familiar face from the past shows up at the colosseum (and he probably wouldn't have shown up without the tournament Doflamingo created to trap Luffy) to switch places with Luffy, allowing him to attack Doflamingo's castle undetected. But the biggest spanners came from Doffy's own crew: his officer Violet, who maintained a façade of loyalty since the time she was blackmailed into joining, falls for Sanji's chivalry and switches sides. Jora, on the tail-end of her capturing the ''Thousand Sunny'', lets her guard down long enough for Brook to pull a YouAreAlreadyDead. Bellamy helps Luffy escape the colosseum because Doffy decided to have him killed. And most of all, there's Sugar, the one turning people into toys. Her being knocked unconscious is the only way for the guise over Dressrosa to be lifted, but no one can get near her. Usopp is captured, but instead of turning him into a toy like the others, she feeds him a grape she believed to be poisoned…which was actually hellishly spicy, and the resulting JumpScare / NightmareFace causes her to faint in shock. Consequently, Doflamingo's precious {{Masquerade}} is shattered, the country sees him for the evil person he truly is, and he's forced to take the most drastic measures that he can.
*** There's also the fact that in the resulting battle, five of the eleven remaining [[OneManArmy One-Man Armies]] in his crew are taken down thanks to pirates that came to the colosseum due to the tournament.
* ''Anime/DennouCoil'' protagonist Yasako is revealed to be this in the final episode. [[spoiler:When Yasako was about seven years old, she stumbled into a hidden Space being used to help a girl her age, later known as Isako, cope with the death of her older brother. Yasako encounters a simulation of this brother and her affection towards him sparks Isako's insecurities and fears of losing him, resulting in the creation of Miss Michiko, which is the cause for many problems throughout the series]].
* Akiyama sees Nao Kanzaki as this in regards to the ''Manga/LiarGame.'' The Liar Game's producers break even by collecting on the players' debts, and profits when the winning contestants forfeit half of their winnings to OptOut of the game. Nao, however, has consistently been using her winnings to pay off other players' debts while increasing her own as a result. Akiyama believes that Nao has the potential to completely bankrupt the Liar Game by doing this since by the end, her personal debt will have gotten so high actually ''collecting'' would be impossible.
* Although the events of ''Manga/CardcaptorSakura, Manga/TsubasaReservoirChronicle'', and ''Manga/XxxHoLic'' are among the most complex and [[GambitPileup densely gambited]] known to man, ''none'' of the respective [[TheChessmaster chessmasters]] could anticipate the YaoiGuys of the former two. The gambit ruling the latter one ''did'' anticipate the YaoiGuys - but apparently failed to anticipate a ''heterosexual crush'' from one of them.
* Senoo Kaori in ''Manga/{{Saki}}'' does this to Mako in the same way as the poker and billiards examples listed in Real Life. Mako's playstyle is based entirely on having watched experienced players all her life. Kaori is a complete beginner. The result is that because Kaori has no idea what she's actually doing, Mako found it impossible to read her discards and ended up losing to her.
** Also, Nodoka [[AgentScully doesn't believe in superstition]], and therefore doesn't notice when something weird is up. In her match against Eisui's Hatsumi, she [[spoiler: derails the plans of Teams Himematsu and Miyamori players, who did notice Hatsumi's ability and were trying to stop it from triggering, by just playing normally]].
* The military high command in ''Anime/StrikeWitches'' were running a conspiracy to [[spoiler:abolish the Strike Witches in favor of their own methods]]. Their plan was all in place and ready to go until Yoshika [[spoiler:attempted peaceful contact with a Neuroi]]. Since the high command's [[spoiler:methods involved illegal use of Neuroi technology]], Yoshika's actions forced them to act prematurely and [[RevealingCoverup made the other Witches realize they were hiding something.]]
* ''LightNovel/FullMetalPanic'': Though not a [[TheDitz ditz]] or stupid like some of the other examples, kidnapping OrdinaryHighSchoolStudent Kaname means that you've instantly lost, because [[IndyPloy she tends to figure out ways to screw up your best laid plans]]. Not to mention the whole "bodyguard with HumongousMecha" thing she has going, and how said bodyguard is the most hardcore BadassNormal the world has ever seen and such.
* In ''Manga/FullmetalAlchemist'', it turns out '''[[spoiler:Scar's older brother]]''' was the first to figure out Father's AncientConspiracy and think up a countermeasure '''before the series even starts''' that allows the heroes to fight back.
** You can't help but pity Father. Despite being an EldritchAbomination who spent centuries erecting a [[GambitRoulette massive plan]] to gain godhood, fate sent an entire legion of fools to ruin his day. In addition to [[spoiler:Scar's brother]], you've got Ling Yao and his entourage, who can sense Homunculi and just want the secret of immortality; May Chang, who uses alkahestry instead of alchemy and is on the same quest as her half-brother Ling; and even Scar himself, whose thirst for revenge almost derails the plan several times.
** Hohenheim is the ''ultimate'' spanner. Father originally let him live and [[spoiler:gave him half of the philosopher's stone made from Xerxes]] because [[spoiler:Father came into existence when the slaveowner who owned Hohenheim, who had no name at the time, used Hohenheim's blood to create Father, and this origin allowed Father to gain a physical body identical to Hohenheim's as well]]. So Hohenheim, after becoming an expert on Alchemy and [[spoiler:living for centuries in the hopes of one day derailing Father's plans]], finds love in a normal woman named Trisha. They have two boys together: Edward and Alphonse. These two children, along with their father, are the main reasons Father can be stopped.
** [[spoiler:The Second Greed]] to Father, who certainly wasn't expecting him to [[spoiler:regain his old memories and betray him a second time]]. Not only does [[spoiler:Greed betray Father]] but he also [[spoiler:joins the heroes to fight against him]]. [[spoiler:Greed]] managed to weaken Wrath (greatly helping Scar) and helped the Briggs soldiers hold the Central fort. He was also crucial in the final battle as he managed to [[spoiler:absorb some of Father's souls and distracted him long enough for the heroes to make him use up his Philosopher's Stone shield]]. Most importantly, after [[spoiler:being [[YouWillBeAssimilated absorbed]] by Father (who at this point, still couldn't die due to his regeneration abilities), Greed '''greatly''' [[AssimilationBackfire damages him]] by using his carbonization powers to turn Father's shell into [[MadeOfPlasticine charcoal]], thereby rendering Father unable to regenerate. All that was needed left to destroy Father afterwards was a single punch from Edward]].
* In ''Manga/DragonBall'', the [[ArmiesAreEvil Red Ribbon Army]] is a worldwide military organisation planning to use the [[MacGuffin Dragon Balls]] to TakeOverTheWorld. Too bad they didn't expect to be dealing with a [[KidHero 12-year-old boy]] [[SimpleStaff with a stick]] after the [[OrphansPlotTrinket Four Star Dragon Ball]] left to him by his deceased grandfather.
** An earlier example would be at the end of the first Dragon Ball hunt. Pilaf has summoned the Dragon and is about to wish for world domination, but he never expects one of the good guys to escape from their prison and change the wish...like Oolong did.
-->'''Pilaf:''' I wish to rule-
-->'''Oolong:''' The panties off a hot babe!
** And afterwards, preparing to kill the heroes for their interference, Pilaf's palace is destroyed by Goku, having turned into a giant monkey monster.
* ''Manga/MahouSenseiNegima'' has [[spoiler: Nodoka, Kazumi and ''specially'' Chisame]] derailing [[spoiler: Kurt Godel's ThanatosGambit]], because [[spoiler: when Negi goes OneWingedAngel on him after he reveals what happened to his DoomedHometown, Nodoka and Kazumi hold him in place, and then Chisame slaps him back to sanity.]]
** And it's not the only one. [[spoiler: Natsumi Murakami is the owner of an artifact which hasn't been found/used/invoked in ''centuries'', obtained from her Pactio with Koutarou. Said artifact is basically an InvisibilityCloak... and she uses it to bring ''a whole rescue team'' to the place where [[ApocalypseMaiden a captive and unconscious]] [[AntiMagic Asuna]] is about to be used by Fate to rewrite the whole Magical World. Fate's [[OhCrap horrified]] face when he sees what happened is ''priceless''.]]
* In ''LightNovel/{{Durarara}}'', one of the main reasons [[ManipulativeBastard Izaya]] hates Shizuo so much is because his emotional volatility, TooDumbToFool nature, and firmly sustained belief that Izaya is responsible for 99.9% of everything that goes wrong in Ikebukuro makes him liable to become one at any moment. [[spoiler:Shizuo ends up doing exactly this in volume 6, when Izaya's attempt to frame Shizuo and get him out of the way for the moment doesn't go quite as planned and instead brings even ''worse'' people down on Izaya's head]].
* In ''LightNovel/{{Baccano}}'''s Flying Pussyfoot arc, it seems like everyone is this for everyone else, in a plot that was already capable of being summed up in one word: "clusterfuck." [[spoiler:Long story short: the [[{{Cult}} Lemures]] plan to hold the train passengers hostage in return for Huey Laforet's release from prison. [[AxCrazy Ladd Russo]] and his [[TheMafia buddies]] plan to kill a bunch of people ForTheEvulz. Czeslaw Meyer plans to smuggle explosives into New York and sell them. Jacuzzi Splot and his gang of delinquents plan to steal Czeslaw's explosives and sell them. [[OutlawCouple Isaac and Miria]] have already pulled off a robbery and plan to use the train to make their getaway into New York City. [[InformationBroker Daily Days]] agent [[BadassBystander Rachel]] just wants to [[RailEnthusiast hitch a ride]]. And [[SociopathicHero Rail Tracer]] ''does not approve of all these shenanigans going down on his train''.]] All of these plans disrupt one another in spectacular fashion and end in varying levels of success based - with one or two notable exceptions - on how sympathetic the characters involved are.
* ''Anime/{{Pokemon}}'': Ash often manages to throw spanners into his rival's tactics due to his tendency to make seemingly dumb choices of Pokemon (bad type match-ups, significantly smaller Pokemon, etc.) and then do the unexpected with them.
** Also the Team Rocket trio. Jessie, James and Meowth almost always manage to create problems for Cassidy and Butch, other Rocket agents, or other villain teams by trying to steal their prize. As several characters have noted, they are actually much better at fighting other villains than fighting the heroes.
* In ''Manga/PokemonSpecial'', Giovanni has a GameBreaker Deoxys that can Forme Change instantaneously at will. Yes, he's pretty much unstoppable...until Bill and his buddies figure out how it works and disable it.
* During the finale of ''Anime/PokemonZoroarkMasterOfIllusions'', [[spoiler: Kodai wins, he gets the Time Ripple. All plant-life in Crown City begins to die! But suddenly it turns out to be all an illusion by Zoroark. But [[ThisCannotBe her illusions shouldn't work on him]], he's got a device for that! Well remember that cute little Zorua he's been [[KickTheDog kicking around the whole movie]]? The one who tried his hardest to stop him but failed? Well turns out a lucky little bite in their last scuffle, unknown to ether of them, broke Kodai's illusion canceler, bringing Kodai's plan crashing down.]]
* In ''LightNovel/ACertainMagicalIndex'', Touma often derails the complex plans of any character by simply showing up and kicking the crap out of every bad guy in sight. Subverted in that Laura Stewart and Aleister Crowley are {{Magnificent Bastard}}s and can factor him into their schemes. Later, Aleister has a VillainousBreakdown when [[spoiler: Shiage defeats Meltdowner]], raging that it's impossible and ordering his death in an effort to stop him from derailing his calculations any further.
* In the Makai Arc of ''Manga/YuYuHakusho'', Yusuke's decision to hold a tournament was a last ditch effort to eliminate Yomi and Mukuro, since Yusuke knew he had no hope of taking either of them in a fight. However, due to Kurama and co.'s lucky presence, and Mukuro's bugging of Yomi's estate, Yusuke's idea prevents all hell from breaking loose: if Yomi were to simply attempt to kill Yusuke, Kurama, as well as his own elite fighters, would side with Yusuke. While Yomi would be capable of killing them all, he'd expend at least a third of his power doing so, leaving him vulnerable to Mukuro and Hiei, all of this forcing Yomi to accept Yusuke's proposal.
* In ''[[Anime/GoLion Beast King Golion]]'', Honerva's plan to take down Altea by [[spoiler: killing Shirogane]] falls victim to ''two'' spanners- one was Kurogane in Red Lion coming up with the idea [[spoiler: to push the Deathblack Beastman Galcia into some magma]], and when Galra attacks again before Altea could train a replacement, [[spoiler: Fala takes Blue Lion]].
* In ''Anime/TigerAndBunny'', [[spoiler:Maverick's]] longtime manipulation of [[spoiler:both [=HeroTV=] and Barnaby]] for his own ends is utterly destroyed by a cascading series of spanners in the works, beginning with Kotetsu, who completely inadvertently foils [[spoiler:Maverick]]'s attempt at [[spoiler:wiping potentially incriminating knowledge from his memory]] and forces him into a much grander plan to try and remove him from the picture...
** ...which falls apart thanks to [[spoiler:Kotetsu's former boss, Ben Jackson. Maverick wipes the memories of Wild Tiger's secret identity from the [=HeroTV=] crew, but overlooks Ben, leaving him able to come to Kotetsu's rescue when the other heroes are out to arrest him]].
** And, to a lesser extent than the above, [[spoiler:Judge Yuri Petrov of the Justice Bureau, aka Lunatic. Maverick could not possibly have anticipated that Yuri had done extensive research into Wild Tiger and Wild Tiger's civilian identity after crossing his path as Lunatic, or that Lunatic's obsessive sense of justice would lead him to come to Kotetsu's aid just in the nick of time to keep Kotetsu from being arrested by the fake Wild Tiger]].
** And finally, [[spoiler:Kotetsu's daughter Kaede, who goes into Sternbild to help prove her father's innocence. When she approaches Maverick to ask for help, he has no idea who she is or that she's recently manifested the power to duplicate the powers of any NEXT she touches, and simply pats her on the head... unwittingly giving her the ability to undo his brainwashing of the other heroes with a well-timed EmotionBomb. Even once he's realized who she is and taken her hostage, he and Rotwang ''still'' fail to properly account for her power, and thanks to coming into contact with Blue Rose shortly before their capture she's able to prevent Rotwang from executing the heroes in his deathtrap.]]
* [[spoiler: Ringo Oginome]] pretty much tells [[spoiler: Shoma Takakura]] that he became one for her [[spoiler: "Project M"]] in episode 11 of ''Anime/MawaruPenguindrum''. This, because [[spoiler: Shoma is the first person to question said "Project M", in which Ringo wants to reach almost all the possible extremes to bear the child of Tabuki-sensei since it means [[MySiblingWillLivethroughMe she'll live the life of her dead older sister]] Momoka; among other things, Shouma tells Ringo that she's herself and ''not'' Momoka, which later makes her think twice in regards to having sex with a {{Love Potion}}ed!Tabuki.]]
** There's another one whose spanning "powers" act on a bigger scale: [[spoiler: Masako Natsume]].[[spoiler: In her backstory episode, we find out that she doesn't want to be used by Sanetoshi at all and only goes along with his plans resentfully to keep her little brother Mario alive. Later on, she refuses to burn her half of the Destiny Diary, which serves as some sort of seal on Sanetoshi's power; the entire diary does get burnt to bits by episode 23, but Masako's refusal holds him off long enough for Ringo to learn the Fate Transfer spell.]]
* Nine times out of ten, bad guys in ''Franchise/{{Gundam}}'' tend to get their plans uprooted because of this.
** The entirety of the Principality of Zeon is just one big spanner against ''themselves'' in ''Anime/MobileSuitGundam'''s One Year War. Among them being:
*** M'Quve refusing to give Ramba Ral the new Doms, leading to his death and later that of the Black Tri-Stars, depriving Zeon of experienced and talented soldiers.
*** Sayla and Amuro spotting a Federation traitor just before Operation Odessa, managing to foil his plans.
*** [[Anime/MobileSuitGundamThe08thMSTeam Ghinias Saharin]] snapping and attacking, leading to the death of his own men that his sister Aina ''had brokered for a cease-fire to get them out for medical attention''.
*** Zeon soldiers mistakenly thinking the Gundam had been destroyed early on in the Battle of Solomon, leading a talented and seasoned pilot like [[Anime/MobileSuitGundam0083StardustMemory Anaval Gato]] to break away and miss fighting Amuro.
*** Zeon blowing a lot of their funding on expensive Mobile Armors or experimental, extremely limited-focus Mobile Suits;
*** Ghiren firing a superweapon too early just to kill his own father, also wiping out LOTS of Zeon's troops. Then a pissed off Kycillia executes Ghiren for {{Patricide}}, leading to the powerful Delaz Fleet (that Gato is a part of) to bail. And to think, they had spent 9 months at that point in a stalemate and were really close to winning...
*** And, of course, the ultimate one: three Zeon soldiers go to Side 7 to investigate goings on in there and discover the Federation building Mobile Suits there. Had they not attacked the factory...
** ''Anime/MobileFighterGGundam''
*** Domon Kasshu. Suffice it to say, he's a thorn in the side of anyone who ever has a plan in this series (including, sometimes, [[NiceJobBreakingItHero people on his side]]). Examples include showing up in Shinjuku just as Master Asia is putting his EvilPlan into motion and [[spoiler:being in love with the person Ulube selects as the core unit for the Devil Gundam]].
*** If it wasn't for Rain "borrowing" the Rising Gundam during the Finals, [[spoiler:Wong's plan to kill Domon and install ''Allenby'' in the Devil Gundam might well have succeeded. Instead, Rain took her down without killing her and removed the DG cells, which later allowed Allenby to help Domon free Rain from the Devil Gundam.]]
** In ''Anime/MobileSuitGundamSEEDDestiny'', Durandal ends up throwing a spanner towards himself and his Destiny Plan by trying to assassinate Lacus Clyne. Had he not decided that Lacus had to die, then Lacus's boyfriend Kira and the ''Archangel'' crew wouldn't have gotten back together to stop the new war that just started, and may had even ''accepted'' the Destiny Plan.
** In ''Anime/MobileSuitGundamZZ'', Haman Karn and her Neo Zeon group had successfully obtained Side 3 through her massive XanatosGambit. It seemed that the Earth would be next... had Glemy Toto not decide to reveal himself as a clone of Ghiren Zabi and initiate a civil war with her.
** In ''Anime/MobileSuitGundamWing'', Romefeller's WarForFunAndProfit scheme fell apart because of Princess Relena Peacecraft. Romefeller's leader, Duke Dermail, invaded Relena's homeland because she was espousing Total Pacifism, which started to undercut Romefeller's authority. Dermail offered to call off the invasion if Relena dissolved the nation and agreed to become the figurehead Queen of the nations unified under Romefeller's banner, and she accepted. He didn't expect [[PluckyGirl Relena]] [[PoliticallyActivePrincess to reject that whole "figurehead" thing and continue advocating peace]], leading to others within Romefeller to admit they're very tired of war.
** In ''Anime/GundamBuildFighters'', Chairman Mashita of PPSE creates arcade game-like machines that [[MundaneUtility animate Gundam model kits]], which have become a worldwide phenomenon and made him a nice chunk of change. And then along comes Reiji, the prince of the otherworldly kingdom from which Mashita stole the [[MinovskyPhysics unusual particles]] which make Gunpla Battle machines work. Afraid that Reiji's victory would give him the spotlight and the opportunity to expose Mashita's theft, the Chairman begins rigging the World Tournament in the hopes of eliminating Reiji...but due to his piloting skills, the model-building talents of his partner Sei Iori, and the TrueCompanions bonds they share with each other and most of the tournament's other participants, every attempt thusfar has failed.
* In ''Manga/HonooNoAlpenRose'', both [[spoiler: Jeudi and her mother Helene were this.]] The first, via [[spoiler: appearing in the Durant mansion and thus throwing a wrench in the local SmugSnake Toulonchamp's plans, which involved him having his own daughter Mathilda as his spy as well as Jeudi's BodyDouble to twist the Durants's arms into helping him]]; it goes double when [[spoiler: she starts singing the ''Alpine Rose'' song when she's being taken away, letting Helene know the truth and identify ''her'' as her daughter instead of Mathilda.]] The second, via [[spoiler: crawling towards Toulonchamp in the middle of a HostageSituation and holding on his leg while he's about to kidnap Jeudi at knife point, distracting him enough to let Jeudi's boyfriend Lundi pounce on him ''and'' setting Jeudi free.]]
** However, [[spoiler: Friederich Brandel aka Jeudi's dad/Helene's husband]] was the biggest one. [[spoiler: The aforementioned ''Alpine Rose'' song? It was ''his'' most famous theme, and not only it doubled as a symbol of LaResistance against ThoseWackyNazis but as his biggest token of love for Helene after they became StarCrossedLovers. Jeudi singing it to prove her identity to Helene ''totally'' undid all of Toulonchamp's plans in regards to the Durants, and before that it was one of Jeudi's few memories about her own past as well.]]
** Also, [[spoiler: Toulonchamp's spy Anna commits the VERY dumb mistake of trying to kill Jeudi via dropping a pot on her head, which the girl barely manages to escape from. This not only scares the crap out of Jeudi's grandparents (reducing their willingness to collaborate with Toulonchamp no matter what he says), but it also terrifies ''Mathilda herself'' and leads her to, despite not defecting to his side, drop some of the info she has to Lundi.]] This ultimately forces him to [[spoiler: directly go to the Durants's home, right in the moment when General Guisan (a highranked military leader as well as a friend of the Durant family who ''knows'' that Jeudi is the real Durant girl) shows up as well...]]
* In ''Anime/PrincessTutu'' '''Ahiru''' is this to Drosselmeyer. Made more ironic by the fact ''he'' was the one to bring her into the story to get it moving. It did; it the direction ''[[EarnYourHappyEnding opposite]]'' to what he wanted.
* In ''Manga/AnatoliaStory'', Queen Nakia needs a special girl's blood to perform a powerful BloodMagic that will kill her stepson Kail and give her the chance to make her own son Juda the heir to the Hitite Empire. Too bad that the girl she brought into Hattusa as her prospect HumanSacrifice, Yuri Suzuki, turned out to a PluckyGirl who decided to fight back to protect herself, the became the concubine of the same prince Nakia wanted to murder, and she not only ended up becoming Nakia's strongest rival but also one of the most influential people in the nation.
* Eren [[spoiler:being a titan shifter]] in ''Manga/AttackOnTitan'' derailed [[spoiler:the other titan shifters]]'s plans by causing them to shift their focus towards Eren.
* ''Manga/RosarioToVampire'': In his first appearance, Gin tried to set Tsukune up to take the fall for Gin's own perversions in an effort to have Moka all to himself. The only reason it failed is because Kurumu was about to comfort Tsukune just as Gin intercepted him. Kurumu followed them and stumbled across [[{{Frameup}} a certain episode behind the school involving a digital camera and the girls' locker room]]. Afterwards, she rescued Tsukune from the vengeful locker room girls, confronted Gin on the roof, and presented a testimony that confirmed Moka's already-growing doubts about Tsukune's role in the incident.
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