History FatalFlaw / AnimeAndManga

* ''FatalFlaw/Pokemon''

** Mikasa's protectiveness over Eren had her prioritizing his safety over everything else, including her own life, which clouded her judgement and made her less efficient as a soldier. When [[spoiler: she thinks Eren died in Trost]] and again when [[spoiler: the Female Titan captured Eren]], she became recklessly suicidal and at one point, it led to [[spoiler: Levi being injured to save her.]]
** Grisha Yeager, Eren's father, may also take the cake of this trope as well. His naivete, foolishness, and inability to see the consequence of his actions unless it's presented to him have caused a downfall on to him and everyone he cares about. First when [[spoiler: he and Faye went out of liberal to see the blimp land until they were caught by officials leading her sister to her demise by a [[HateSink sergeant]]. Second was distancing himself from his first son Zeke and forcing nationalism into his life and trying desperately to have him be chosen to be a shifter for the restoration's plan and never sparing a moment for how he feels and never seeing him and understanding him as the boy he was to the point he turns on him and his wife Dina, leading them and the rest of the restorations to hours to days of torture for information and being sentenced to paradi for treason as Pure Titans]]

* ''Anime/PokemonTheSeries'':
** Ash Ketchum, the series lead for 26 years, had two that were holding him back.
*** His biggest flaw in the series was his immaturity. Despite loving Pokémon so much, his insecurities about whether or not he had what it took led him to develop an ego the size of a Wailord, promptly turning him into a reckless, lazy, haughty young man who thought he could take on the entire Pokémon League and win because he was Ash Ketchum. Predictably, he barely scraped his way by during his Kanto Journey, getting over half his badges out of pity and not skill and only making it to the Top 16 of the Indigo League through dumb luck. This devastating loss forces humility on him, and he starts taking things more seriously to eventually train his way up to more well-earned victories, higher league placements, and far more powerful Pokémon.
*** The next was his sole reliance on ThePowerOfFriendship. True, it gained him some powerful Pokémon who grew on their own terms to become stronger alongside their trainer, but come ''Diamond and Pearl'', this crutch is brutally exploited by Ash's rival in Sinnoh, Paul, who promptly wipes the floor with Ash using cold, calculated strategy that turns Ash's reliance on his Pokémon against him several times over. After a brutal 6-2 loss to Paul at Lake Acuity, Ash finally realizes he has to apply actual strategy to his matches ''in addition'' to friendship, which helps earn him a narrow win over Paul at the Sinnoh League and allows him to keep growing from there.
** Misty's is her temper. Although she was somewhat more mature than Ash and actually had proper experience from being a Gym Leader, she demonstrated that if she flew off the handle (and it [[BerserkButton didn't take much to set her off]]), she could be just as stubborn, immature, and hotheaded as he could be. When she finally did mellow out after [[TookALevelInKindness she started being nicer to Ash]] (thanks to being PromotedToParent to care for a freshly-hatched Togepi), she started honing her skills as a Gym Leader and [[TookALevelInBadass managed to finally grow stronger]].
** Brock's is CasanovaWannabe tendencies. Though a skilled Gym Leader and an expert Breeder, he drops everything he's doing and tries to flirt with every pretty woman he sees, ''especially'' Officer Jenny and Nurse Joy (whom he can tell apart down to the smallest detail). It's funny for the audience to see him suffer such misfortunes, but all of this proves to be little more than a distraction to him obtaining his goals; even when he does settle down on becoming a Pokémon Doctor and leaves Ash's group to study for it, [[spoiler:he throws away his prospective career he just obtained to run a restaurant with yet another pretty girl he just met...[[FailedASpotCheck that he didn't even bother checking to see if she was single first!]].]] Makes one wonder if Croagunk's constant Poison Jabs in the rear was his way of telling Brock to stop getting distracted and actually do something with his life...
** May's is her under confidence. She has the talent to be a great Coordinator, but she's so worried about making mistakes or lacks such faith in her own abilities that she makes crucial mistakes along the way. Her battle against Drew in the Kanto Grand Festival nearly turns pear-shaped because she started losing confidence, and when she does lose to Solidad rather lopsidedly, the loss crushes her so badly that she spends the last of the ''Battle Frontier'' arc in a very bad funk over it, losing a practice round to Drew in the process. Part of the reason she leaves Ash's group for Johto is so she can find her way, which ''Journeys'' implies she does given how widely respected she is as "The Princess of Hoenn."
** Dawn's is perfectionism. Given that she's the daughter of the legendary Johanna, a world-renowned Top Coordinator, she's eager to follow in her mom's footsteps. Unfortunately, she's so overconfident and focused on fine-tuning her performance to perfection that she loses her first contest, and winds up failing to make the second stage ''twice in a row''. Zoe and Wallace both point out to her that she'll only be able to get further if she loosens up and has fun with her Pokémon. Luckily she does, and things go better for her in the long run.
** Iris' is her immaturity. Despite all she frequently bags on about Ash "being a kid", she's still plenty green around the gills herself, and doesn't have the knowledge or experience to become a Dragon Master like she wants. Part of this stems from her inability to control her Pokémon due to a lack of understanding of them -- her Axew is still just a baby, she pushed her Excadrill too hard during her last battle with it and lost all respect for not considering its feelings, Emolga is too much of a spoiled brat to reign in like she wants, and her Dragonite is too much of a BloodKnight to listen to her commands. She eventually takes the time to get to understand them better and they start listening to her, which ''Journeys'' shows [[spoiler:made her Champion of Unova]].
** Serena's growing crush on Ash is adorable and ironic, especially since it's [[ObliviousToLove one-sided on her part]]. {{Zig Zagg|ingTrope}}ed as her infatuation becomes a source of strength for her, as she starts her journey because she saw him on TV and wanted to reconnect with him after years of not seeing each other while also finding a dream to pursue for herself. However, during the XY series, she spends much of her time vying for his approval, which causes her to become stuck in a rut. She eventually realizes that she must chart her own path, even if she still desires Ash's love. When she leaves the group, she does so under the promise that Ash is her goal but intends to do so patiently.
** Lillie's is her own fear of Pokémon. She admits that she loves them and wants to know more about them, but she just can't bring herself to touch them despite this. She slowly works towards overcoming her fear, but regresses back when it's revealed [[spoiler:A Nihelego attacked her when she was little, but Faba buried her memories]] after Nebby the Cosmog accidentally brings her in contact with Type: Null. When she directly confronts those fears after [[spoiler:facing both Faba and that same Nihelego]], she manages to overcome her trauma and set off on a quest to find her missing father. In fact, by the end of Ash's tenure as the series lead, she's the ''only'' one of Ash's companions to accomplish her goals, having [[spoiler:found her father and welcoming the Shiny Nihelego that saved him into the family.]]
** Goh's is his single-mindedness. Ever since he met Mew as a child, he's been focused on capturing Mew and Mew alone, isolating himself from everyone and having very few friends aside from Chloe. He does find a new friend in Ash when both are recruited as Research Fellows, and he does decide to start catching other Pokémon to better understand Mew, but his stubbornness and lack of understanding briefly cause his Raboot to turn against him for not bothering to teach it Ember, his Drizzile runs off when Goh fails to get why it's upset about not evolving into Inteleon, and his disliking of Gary's constant taunting during their Project: Mew missions together keeps him from working together with his rival properly. Even if he does make friends, he's so finicky about how he defines that friendship that he considers it a "betrayal" if they do something to his disliking; a boy he met named Horace failed to meet up with him to search for Celebi, which Goh took personally until [[spoiler:he learned Horace got sick that day]], and at the end of the series, [[spoiler:declares his friendship with Ash over when Ash decides to go on a journey alone, despite Goh wanting to do the same (though luckily Lugia stops by and fixes things).]]
** Chloe Cerise's is her indecisiveness. Her father is a famous researcher, and everyone's pressuring her to do the same, but she's not sure what she wants to do with her life at all. Meeting an Eevee that somehow can't evolve results in her starting to take up research to see what this Eevee might want to evolve into, but the multitude of choices make it hard for either party to decide. [[spoiler:She settles on keeping Eevee as is for now, and grows fascinated by the subject of Pokémon Evolution enough that she takes up a Research Position when Ash and Goh leave.]]

** Yami Yugi has his {{Pride}} where he feels that he has to win at all costs, even if he has to do questionable things, such as being prepared to kill Kaiba during their rematch in Duelist Kingdom to save Yugi's grandpa. He mostly grows out of this as seen in his Battle City duel with Bakura where he refused to attack the injured Bakura. It resurfaces in the Awakening the Dragons arc, though, where in a duel with Rafael, Rafael uses Exchange to hand Yami the Seal of Orichalcos to goad him into using it. Rather than accept a loss for a no-risk duel, Yami activates the seal himself, becomes corrupted, and loses Yugi's soul when Rafael defeats him.
** Kaiba's flaw is his obsession with being the best, at everything, and indeed, some have used his need to defeat and surpass his rival as a way to manipulate him, or try to. Kaiba's obsession can often keep him from thinking clearly and taking needless risks in pursuit of his goal. He would likely find life more enjoyable if his need to be number one didn't dominate him. [[spoiler: This comes to a head in [[Anime/YuGiOhTheDarkSideOfDimensions Dark Side of Dimensions]] where his obsession with beating Yami Yugi causes him to try and bring back the puzzle pieces and almost got him and Yugi killed when they are targeted by Aigami/Diva]]

* ''Anime/GodzillaPlanetOfTheMonsters'': Haruo's [[{{Determinator}} resolve]] and [[{{Wrath}} anger]] continually screws him over as he becomes an UnwittingPawn to the Bilusaludo and Exif across the film and its [[Anime/GodzillaCityOnTheEdgeOfBattle two]] [[Anime/GodzillaThePlanetEater sequels]].

** For Bakugou, {{Pride}} and {{Wrath}} are his two big ones and they're well-connected to his unexpectedly fragile ego. Whenever he sees something that could be construed as [[DontYouDarePityMe pitying him]] or suggesting he's not the best, he will ''immediately'' lash out. This is the reason he has very few friends at school and it's a massive stumbling block when it comes to his career as a hero, as he can't properly accept the [[HeroDoesPublicService public service]] part of heroism and has an unfortunate tendency to be a LeeroyJenkins. It took the fall of the civilized society for him to realize these flaws.

** Serena's is, ironically, her crush on Ash. It's cute (if [[ObliviousToLove a bit-one sided on her part]]), but she spends much of the ''XY'' series stuck in a rut because she's desperately vying for his approval; heck, the only reason she started on her own journey was because she saw him on tv and wanted to reconnect years after they last saw each other. It takes her some time to even find a goal she wants for herself, and it takes even longer before she comes to realize that she needs to chart out her own path, even if she still desires Ash's love in the end. When she leaves the group, she does so under the promise that Ash is her goal, but she intends to do so patiently.

* In ''Manga/AttackOnTitan'', Eren is very emotionally-driven (especially by [[HotBlooded his]] [[TheBerserker temper]]) and can be reckless at times, which tend to him making decisions that end up having negative consequences for himself and others. Such as trying to avenge Thomas's death, [[spoiler:resulting in most of his team's deaths and himself being eaten]]. His other flaw is his [[BlackAndWhiteMorality rigid view of morality]], to the point [[BlackAndWhiteInsanity he doesn't see the middle ground]]. Case in point, his reaction to villains expressing guilt, only enrages Eren even further as he believes that they shouldn't feel remorse. [[spoiler: His vengeful nature and rigid morality eventually lead him to concluding ''all humanity not on Paradis'' is the problem, and attempting to commit genocide.]]

* Light Yagami of ''Manga/DeathNote'' has his overwhelming pride, which reaches AGodAmI at its worst and blinds him to the point of refusing to even ''contemplate'' his own failure.

** [[spoiler:Prince Schneizel]]'s detachment makes him ignorant of the situation and [[spoiler:makes him vulnerable to be controlled in the end by Lelouch. Yet Schneizel is hypocritical and thinking just in the box]]. As Lelouch ever stated it to him.

* ''Anime/NeonGenesisEvangelion'': Whether it be Shinji's raging inferiority complex, Asuka's self-endangering recklessness, Misato's alcoholism, SEELE's bizarre neo-mystic delusions, or Rei's complete disregard for her own life, pretty much ''everybody'' has at least one of these, and quite a few have more than one.

** Takumu also suffers from poor self-esteem, but it's a bit different in his case, since he's prone to punishing himself for his mistakes and wallowing in his guilt.

** Grisha Yeager, Eren's father, may also take the cake of this trope as well. His naive and foolishness and unable to see the consequence of his actions unless it's presented to him has cause a downfall on to him and everyone he cares about. First when [[spoiler: he and Faye went out of liberal to see the blimp land until they were caught by officials leading her sister to her demise by a [[HateSink sergeant]]. Second was distancing himself from his first son Zeke and forcing nationalism to his life and trying desperately to have him be chosen to be a shifter for the restoration's plan and never spare a moment for how he feels and never see him and understand him as the boy he was to the point he turns on him and his wife Dina, leading them and the rest of the restorations to hours to days of tortured for information and being sentence to paradi for treason as Pure Titans]]

** Aizen's god-complex and arrogance has him believe that he was above everyone else leading him to discard strategy and cunningness (what had previously allowed him to outsmart and outplay his enemies). He relied too much on his unnatural power upgrades and became DrunkWithPower, which would lead to [[spoiler:his defeat at the hands of both Ichigo and Urahara.]]
** Shinji's distrust of Aizen meant that it was easy for Aizen to get away with his scheming because, as Aizen himself points out, Shinji never got to know Aizen as a person so when Aizen sent an imposter disguised as him to carry out his vice captain duties, Shinji never noticed the imposter was a fake.

** Neliel's condescending underestimation of Nnoitra comes back to bite her in the ass twice -- first, she continually follows him around on missions and rubs it in his face that she has a higher rank, never finishing him off in their fights because he is of a lower rank than her and thus poses no threat, [[DontYouDarePityMe which to Nnoitra was disgracing him as a warrior.]] Nel is therefore utterly unprepared when Nnoitra teams up with Szayel, nearly kills her Fraccion and then cracks her mask, crippling her by turning her into a child and throwing her out of Las Noches to die. Then, when they meet again in the present, Nnoitra points out during their fight that the Espada have grown much stronger in her absence and Nel refusing to kill Nnoitra despite the threat he poses means that when she unexpectedly returns back to her kid form, he promptly curbstomps her ([[WorfHadTheFlu once her powers go away]]), then starts torturing Ichigo in front of Orihime [[BigDamnHeroes before Zaraki shows up and intervenes.]]
** [[BrattyHalfPint Hiyori's]] HotBlooded, LeeroyJenkins tendencies really backfire on her several times in the series -- when she continuously goads and provokes Ichigo as his SuperpoweredEvilSide starts taking over him, she gets slammed into the wall and nearly gets choked to death for her troubles and it's only the other seven Visoreds pinning him down that saves her. Later on during the battle over Fake Karakura town, she ignores Shinji's warnings and tries to attack Aizen head on and Gin responds by [[HalfTheManHeUsedToBe bisecting]] her. If it wasn't for Hachi and Orihime, she'd be dead, no question.

** Yuu Koito, one half of the main couple ThinksLikeARomanceNovel, and has unrealistic expectations when it comes to love. [[spoiler:Because of this, when Touko seemingly rejects her, Yuu concludes that because she didn't break down in tears like Akari did, she never truly loved Touko. It takes her a few chapters to realize that she's mistaken]].

* In ''Manga/ChronoCrusade'', Chrono's [[OurDemonsAreDifferent demonic instincts]] and [[FailureKnight need to protect others]] (particularly Rosette) sometimes combine to give him a very, very [[UnstoppableRage dangerous temper]]. Since Chrono's powers [[CastFromHitPoints drain Rosette's lifespan]] due to [[DealWithTheDevil their contract]], it's dangerous not just to him, but to Rosette herself. [[spoiler:In fact, in the manga this trope is taken literally, when Aion provokes Chrono into unsealing his powers himself and come at him with everything he's got. Several people are killed in the battle, and it drains so much of Rosette's life that the next time she unseals the watch, she dies.]]

** [[spoiler:Prince Schneizel]] detachment making him ignorant with the situation and [[spoiler: make him vulnerable to be controlled in the end by Lelouch. Yet Schneizel is hypocritical and thinking just in the box]]. As Lelouch ever stated it to him.

* In ''Anime/DeliciousPartyPrettyCure'', Yui Nagomi/Cure Precious has naivety. Many Pink Cures tend to be oblivious over certain things, Yui takes the cake. She sees nothing wrong with Amane knowing about Recipepes when only she, her teammates and Rosemary are the only ones who should know about them and is utterly oblivious to Takumi’s crush on her. What takes the cake is [[spoiler:the revelation that [[BigBad Godatz]] can be redeemed, stopping Takumi from striking him down. Instead, Takumi is badly injured when Godatz attacks him in return and forcing Kome-Kome to pull the Cures out, nearly killing herself]].

** Of special note, [[ChivalrousPervert Cross Marian's]] flaw seems to be women and girls. He hates returning to the Dark Order, and has been running from them for 4 years. A team is sent to find him. Chief Komui puts Lenalee, a young girl on Cross' team. Cross ends up back at HQ, but promptly tries to escape. But Lenalee hugged him, and begged him not to leave. He thinks about how cute she is, thus he can't refuse her. And that leads to him attending a meeting, being interrogated for his 4 year absence, investigated, demoted, and put under constant surveillance. His being at the Order in the first place made him easy to find when [[spoiler: someone comes to his room to attempt to assassinate him where upon he's shot in the head.]] The only reason he went through any of that at HQ is because he didn't run away when he had the chance, and the sole reason he didn't is because a cute girl asked him not to leave. And said girl wasn't even one of his lovers.

*** His mercy has also come back to bite him in the ass. Sparing Vegeta and Piccolo Jr ended up gaining him powerful allies in the end, but refusing to just kill the obviously, unrepentantly, mustache-twirlingly evil Frieza has gotten [[spoiler:TWO]] planets blown up [[spoiler: and most of his friends killed before a time "rewind" undid it.]]

** Gohan himself has one, as Piccolo points out in ''Anime/DragonBallSuper'': whenever Gohan has a major power advantage, he lets it get to his head and ends up toying with his opponents and letting his guard down. When he battles Cell, despite Goku's pleas to finish Cell off right then and there, Gohan refuses and opts to keep torturing him, leading to Goku's death when Cell decides to RageQuit and self-destruct. When he battles Super Buu, he allows the creature to retreat and recover, allowing him to return and capture him, Gotenks and Piccolo.

** Majin Buu's final form, Kid Buu, is noted to be so dangerous precisely because he ''lacks'' one, in contrast to his other forms. Fat Buu was childish and innocent, Super Buu was hotheaded and arrogant, but Kid Buu is a pure engine of destruction who doesn't bother playing with his opponents. He can't be befriended like Fat Buu, or tricked like Super Buu, only fought to the death.

* From ''Literature/{{Durarara}}'', Shizuo's severe anger issues and Kida's inability to face [[MyGreatestFailure his guilt head on.]] Not only does this put him in a position where he avoids his girlfriend Saki [[spoiler: they make up at the end of the anime series]] but by not facing this head on, [[spoiler: he repeats his whole guilt trip with his best friend Mikado by dropping out of school and leaving Ikebukuro. And Mikado didn't take this well...]]

* In ''Manga/FailedPrincesses'', Kanade Kurokawa's flaw is her low self esteem and tendency to put the extremely beautiful Nanaki Fujishiro on a pedestal, even back when Kurokawa ''hated'' Fujishiro. As a result, it prevents her from seeing Fujishiro as an equal or becoming closer to her, and [[spoiler:causes her to reject Fujishiro's LoveConfession]].

** Erina Nakiri has a serious case of {{Pride}}. She looks down on others simply based on backgrounds, and refuses to admit she might be wrong or back down from an opinion she arrived at without thinking. This leads her to butt heads with series protagonist Soma Yukihira, simply because she refused to admit that a cook from a middle-class diner could make a simple dish on par with gourmet food.

*** Lust’s fatal flaw is her untamed sadism, as she prefers to let her victims suffer horribly instead of pragmatically killing them off as shown with her severely injuring Havoc and Mustang with the latter managing to heal his wounds by cauterizing them with his flame alchemy, sealing Lust’s demise.

* In ''VisualNovel/{{Hakuouki}}'', [[DrillSergeantNasty Hijikata]]'s desire to protect Kondou. He deliberately plays the role of the harsh disciplinarian and "Demon Vice-Commander" to elevate Kondou's warm and friendly nature for the troops, dealing with most of the issues and problems instead of Kondou. This backfires on both of them as Hijikata's efforts leaves Kondou entirely unprepared to deal with the harsh realities of leadership when the Boshin War began and Hijikata to suffer a HeroicBSOD when [[spoiler: Kondou sacrifices himself to buy his men time to escape and is executed.]]

** Silvermask/[[spoiler: Hilmes]] is obsessed with regaining the throne at any cost. He also easily flies off the handle any time anyone challenges that he might not be the rightful king or if they acknowledge Arslan as the current crowned prince. He does not realize that his temper and violent tendencies is isolating him from potential allies or it might be the reason why people prefer to join Arslan than him. He also does not realize that the Zahhak sorcerers who are assisting him have been deliberately stoking his HairTriggerTemper since he was young for him to become an UnwittingPawn for them to sow further destruction across the kingdom to resurrect their master.

* From ''Anime/MobileSuitZetaGundam'' and ''Anime/MobileSuitGundamZZ'', Haman Khan's fatal flaw is ''despair''. She UsedToBeASweetKid, and she could have become one of the greatest heroes of the Universal Century. But due to Char going off to play soldier and finding herself as an absolute dictator of a generally-pretty-evil bunch at fourteen, she grew disillusioned with humanity and came to believe that they deserved nothing more than an absolute dictator. [[spoiler: This led to her death, as well. When she fought Judau to a draw, but failed to defeat his ideals, she gave up and [[DrivenToSuicide killed herself]].]]

*** His ItsAllAboutMe attitude. At the start of the series, while Bakugou was strong and determined, he was also very arrogant and self-centered. He only ever focused on himself and disregarded others, making him very unpopular with his peers, who constantly called him out on it. Luckily, as the series progresses, Bakugou learns to stop making everything about him and show more empathy to others.

** Sasuke's [[RevengeBeforeReason need for vengeance]] has caused him abandon his friends, home, his arm, and be called a missing-nin. At the end of the series he chooses to WalkTheEarth to atone for all the pain and suffering his quest for revenge caused.

*** Thanks to her intelligence, there are times she can be very imposing and patronizing, even after her CharacterDevelopment. Not so bad unless that is combined that with her stubbornness, temper, passive-aggression, and selective hearing tendencies, then she can be rather off-putting at times, which can lead to...

* Bishamon's refusal to accept consequences of her actions in ''Manga/{{Noragami}}''. She regularly takes in more Shinki that she can to protect them despite the strain and the danger it puts on her. When the Ma clan was destroyed by Yato [[spoiler: as a MercyKill]], she refused to acknowledge her own failing that led to [[spoiler: the clan being corrupted]] and blamed Yato instead. She consistently insists that she is fine when she is not, causing in turn her Shinki to hide their own problems because they don't want her to worry, resulting in their hidden anxieties straining her body further.

** Luffy has one true fatal flaw: personal loyalty. The length of which he's willing to go to help a friend is nothing short of incredible. This may manifest as stubbornness, anger and inconsideration. For instance, his inability to control his volcanic rage eventually leads to [[spoiler:Kuma attacking and scattering all the Straw Hats around the world.]] Luffy does what he wants, even if he knows there would be grave results. The above example had Hatchan making Luffy promise not to [[spoiler:cross paths with a World Noble, regardless what happens.]] But when [[spoiler:Camie and Hatchan]] are kidnapped and injured, Luffy went ahead and broke his promise and while he did apologize, he didn't show any regrets.

** Miku's lack of confidence. She often compares herself unfavorably to her sisters, and while she can be very dedicated when she sets her mind into something, she tends to self-impose additional conditions to motivate herself more (such as deciding to confess to Fuutarou if she gets the highest grades), and when she's unable to fulfill them, it hurts her already fragile self-esteem.

** Tenma always wants to make others feel better. This almost get her killed in the manga.

** Death the Kid has his ObsessivelyOrganized tendencies and self-esteem issues; the presence or lack of symmetry in his surroundings (or remembering that he may have forgotten to symmetrically fold his toilet paper roll this morning) can take him out of a battle in a heartbeat. In one case, Liz uses this against him to avoid getting into a battle in the first place, as the factory containing the Clown scared her, (and with good reason). She does something similar earlier, when taking note of Free's ball and chain to provoke Kid to attack the werewolf.

** And Barnaby has his own flaw; the hell-bent obsession with revenge that made him an IneffectualLoner who has rejected any close personal relationships for the past ''20 years''.

** Yami Yugi has his {{Pride}} where he feels that he has to win at all cost, even if he has to do questionable things, such as being prepared to kill Kaiba during their rematch in Duelist Kingdom to save Yugi's grandpa. He mostly grows out of this as seen in his Battle City duel with Bakura where he refused to attack the injured Bakura. It resurfaces in the Awakening the Dragons arc, though, where in a duel with Rafael, Rafael uses Exchange to hand Yami the Seal of Orichalcos to goad him into using it. Rather than accept a loss for a no-risk duel, Yami activates the seal himself, becomes corrupted, and loses Yugi's soul when Rafael defeats him.
** Kaiba's flaw is his obsession with being the best, at everything, and indeed, some have used his need to defeat and surpass his rival as a way to manipulate him, or try to. Kaiba's obsession can often keep him from thinking clearly and take needless risks in pursuit of his goal. He would likely find life more enjoyable if his need to be number one didn't dominate him. [[spoiler: This cames to a head in [[Anime/YuGiOhTheDarkSideOfDimensions Dark Side of Dimensions]] where his obsession with beating Yami Yugi causes him to try and bring back the puzzle pieces and almost got him and Yugi killed when they are targeted by Aigami/Diva]]

* From ''LightNovel/{{Durarara}}'', Shizuo's severe anger issues and Kida's inability to face [[MyGreatestFailure his guilt head on.]] Not only does this put him in a position where he avoids his girlfriend Saki [[spoiler: they make up at the end of the anime series]] but by not facing this head on, [[spoiler: he repeats his whole guilt trip with his best friend Mikado by dropping out of school and leaving Ikebukuro. And Mikado didn't take this well...]]

* It becomes clear pretty quickly that Satou's biggest flaw ({{Hikikomori}} tendencies aside) in ''LightNovel/WelcomeToTheNHK'' is his incredibly addictive personality, marked by him hurling himself headlong into anything he's introduced to (internet porn, {{MMORPG}}s, etc.) and needing to be bailed out by others.

** Death the Kid has his [[SuperOCD raging OCD]] and self-esteem issues; the presence or lack of symmetry in his surroundings (or remembering that he may have forgotten to symmetrically fold his toilet paper roll this morning) can take him out of a battle in a heartbeat. In one case, Liz uses this against him to avoid getting into a battle in the first place, as the factory containing the Clown scared her, (and with good reason). She does something similar earlier, when taking note of Free's ball and chain to provoke Kid to attack the werewolf.

* ''LightNovel/BofuriIDontWantToGetHurtSoIllMaxOutMyDefense'': Mii's '''severe flaw''' is that, while her skills are deadly, she burns through MP/MP Potions like no one's business. Once she runs out of both MP/MP Potions, she's basically reduced to her basic attacks, something another person can utilize to their advantage via a [[VictoryByEndurance battle of attrition]] and her [[LimitBreak Flame Prison]] can be easily undone, as it requires a '''very''' lengthy amount of time to cast, and if Maple and her comrades were slightly smarter in tactics and so forth, they wouldn't have fallen for both it and [[spoiler: prevented Shin from running off with their goal point collection.]]

** Nino has a tendency to be InnocentlyInsensitive, rarely being receptive to other people's feelings and often acting out on her own without any care for the potential consequences. Case in point, she kicks off the Seven Goodbyes arc by actively trying to pick a fight with Miku so that Fuutarou leaves, which results in getting an ArmorPiercingSlap from Itsuki when she crosses the line.

** Aizen's god-complex and belief that he was above everyone else led him to discard strategy and cunningness (what had previously allowed him to outsmart and outplay his enemies). He relied too much on his unnatural power upgrades and became DrunkWithPower, which would lead to [[spoiler:his defeat at the hands of both Ichigo and Urahara.]]

* ''LightNovel/AccelWorld''

* ''Anime/DanganRonpa3''::