History Main / EtTuBrute

* A case where the betrayal actually does cause a FaceHeelTurn: ''WesternAnimation/KungFuPanda'', during Tai Lung's StartOfDarkness. Master Shifu betrays his prize pupil and adopted son -- not by denying him the Dragon Scroll, but by raising him to believe he was ''destined'' to one day earn it as a matter of course, filling him with pride and dreams... and then, when Oogway advised otherwise, ''refusing to defend, stand up for, or even support his son''. No wonder the snow leopard went insane and goes on his RageAgainstTheMentor.

* LetsPlay/PartyCrashers: In "[[https://www.youtube.com/watch?v=5eLmrSOn9vw Don't EVER betray me in Mario Party]]", Nick promises Brent that he won't eliminate him first on the minigame Honeycomb Havoc after subjecting him to the same fate in a previous game. [[BlatantLies He then proceeds to eliminate Brent first immediately after,]] [[RageBreakingPoint causing Brent to Brent completely lose it]]:

* A case where the betrayal actually does cause a FaceHeelTurn: ''WesternAnimation/KungFuPanda'', during Tai Lung's StartOfDarkness. Master Shifu betrays his prize pupil and adopted son -- not by denying him the Dragon Scroll, but by raising him to believe he was ''destined'' to one day earn it as a matter of course, filling him with pride and dreams...and then, when Oogway advised otherwise, ''refusing to defend, stand up for, or even support his son''. No wonder the snow leopard went insane and goes on his RageAgainstTheMentor.

* LetsPlay/{{Dream}}: In the ending of his Speedrunner VS 2 Hunters video, [[spoiler: George kills Sapnap when he believes that Dream, who is falling into the void, has lost. This reckless move ''costs him the entire game'', as Dream manages to get one of Sapnap's Ender Pearls before he can fall far enough to die, allowing him to get back onto safe ground and kill George -- had George just done nothing, he would have won without question]].

* LetsPlay/PartyCrashers: At one point in "[[https://www.youtube.com/watch?v=5eLmrSOn9vw Don't EVER betray me in Mario Party]]", Nick promises Brent that he won't eliminate him first on the minigame Honeycomb Havoc after subjecting him to the same fate in a previous game. [[BlatantLies He then proceeds to eliminate Brent first immediately after,]] [[RageBreakingPoint causing Brent to Brent completely lose it]]:

* LetsPlay/PartyCrashers: At one point in "[[https://www.youtube.com/watch?v=5eLmrSOn9vw Don't EVER betray me in Mario Party]]", Nick promises Brent that he won't eliminate him first on the minigame Honeycomb Havoc after subjecting him to the same fate in a previous game. [[BlatantLies He then proceeds to eliminate Brent first immediately after]], [[RageBreakingPoint causing Brent to Brent completely lose it]]:

* ''LetsPlay/PartyCrashers'': At one point in "[[https://www.youtube.com/watch?v=5eLmrSOn9vw Don't EVER betray me in Mario Party]]", Nick promises Brent that he won't eliminate him first on the minigame Honeycomb Havoc after subjecting him to the same fate in a previous game. [[BlatantLies He then proceeds to eliminate Brent first immediately after]], [[RageBreakingPoint causing Brent to Brent completely lose it]]:

* Tends to be common in ''Website/GoAnimate'' grounded videos, where the troublemaker's "[[WithFriendsLikeThese friends]]" will rat them out if the chips are down. If the character is in court, expect the friend to testify against them.

** In "[[Recap/AvatarTheLastAirbenderTheAvatarAndTheFireLord The Avatar and the Fire Lord]]", though the relationship between Avatar Roku and Fire Lord Sozin became deeply strained when Roku made it clear that he would kill Sozin if he launched his planned war, their relationship wasn't entirely beyond saving, as shown when Sozin showed up to aid Roku when his island suffered a massive volcanic eruption, much to Roku's surprise. The two men stood their ground and controlled the volcanoes until the villagers had escaped, at which point [[spoiler: Roku takes a faceful of toxic volcanic gas and collapses, begging for Sozin to help him. Sozin however realizes this is the perfect chance to finally achieve his ambitions of conquest for a better world and and leaves him to die on the island]].

Having the entire EvilEmpire out to get them isn't a big deal as long as they have their TrueCompanions watching their backs. But if one of the chosen few should renege, the hero will [[HeroicBSOD go to pieces]].

** Viktor has one as well during "[[Recap/ArcaneS1E7TheBoySavior The Boy Savior]]". [[spoiler:"You didn't say they were from the Undercity!/ "I'm from the Undercity."]]

* {{Deconstructed}} in ''WebAnimation/MysterySkullsAnimated''. Lewis was killed by his possessed and horrified friend, Arthur, and now seeks Arthur's death in revenge.

[[folder:Web Comics]]

[[folder:Web Original]]

** [[spoiler: Powder feels deeply betrayed when her older sister Vi seemingly abandons her after Powder inadvertently killed their family. Powder's hurt denunciations against Vi [[CommonalityConnection touches Silco with their shared pain]], who goes from [[WouldHurtAChild planning to kill her]] to [[EvenEvilHasLovedOnes adopting her as his daughter]].]]
** Viktor has one as well, during The Boy Savior. [[spoiler: "You didn't say they were from the Undercity!/ "I'm from the Undercity."]]
* ''WesternAnimation/AsToldByGinger'': When Ginger Foutley finds out from Courtney Gripling that Dodie Bishop and Macie Lightfoot teamed up with Miranda Killgallenin in an attempt to break up her and Darren Patterson.
** {{Lampshade|Hanging}}d when Ginger sees her friends defecting to the other side in "Battle Of The Bands".
---> "Et tu Dodie?"

** In the episode "The Crossroads Of Destiny", Uncle Iroh's betrayal by [[spoiler:Zuko, his nephew who sold him out to the Dai Li]]. For the record, [[spoiler:Iroh is not specifically hurt by the act of betrayal − he has been going through it since he withdrew from the siege of Ba Sing Se, anyway − and is instead saddened that Zuko's conflict of conscience has to go this deep. He never wavers in his trust for Zuko, which, fortunately, does pay off.]]
** In the episode, "The Avatar and the Fire Lord", though the relationship between Avatar Roku and Fire Lord Sozin became deeply strained when Roku made it clear that he would kill Sozin if he launched his planned war, their relationship wasn't entirely beyond saving, as shown when Sozin showed up to aid Roku when his island suffered a massive volcanic eruption, much to Roku's surprise. The two men stood their ground and controlled the volcanoes until the villagers had escaped, at which point [[spoiler: Roku takes a faceful of toxic volcanic gas and collapses, begging for Sozin to help him. Sozin however realizes this is the perfect chance to finally achieve his ambitions of conquest for a better world and and leaves him to die on the island]].
** In "The Boiling Rock", [[spoiler:Azula's spiral down into [[VillainousBreakdown complete insanity]] starts when Mai and Ty Lee betray her]]. Then "Sozin's Comet, Part 1: The Phoenix King" has [[spoiler:Ozai, the last person she trusts, essentially abandoning her so he can achieve world domination alone. Her breakdown complete, she no longer cares about anyone or anything and simply does as she wishes]].
* A rather depressing example comes from ''WesternAnimation/BatmanTheAnimatedSeries''. In the episode "Birds of a Feather", the Penguin is released from prison and declares that he's reformed and will become a model member of high society. A group of snobbish aristocrats decide to bring him into their social circle so that they can laugh at his social ineptitude and appearance. He generally doesn't care how life had gotten him down through the rest of the episode, but when he overhears the woman whom he had fallen in love with talking about this plot, he loses it. The real slap in the face is that he had genuinely reformed until this happened.

!!Examples:

[[folder:Anime & Manga]]
* Used in Episode 15 of ''Anime/AldnoahZero'', during the battle between Inaho and Slaine. [[spoiler:Saazbaum jumps in, eager to give some payback to Inaho. Despite this, Inaho still manages to exploit his weaknesses, though he ends up getting killed by a trap Slaine had set out earlier in the episode. Though Slaine meant for it to be used on Inaho, he takes this opportunity to stab Saazbaum in the back for shooting Asseylum, then uses Saazbaum's death to further his own goals within the Vers ranks. To his credit, Saazbaum's reaction to all this is a smirking "''[[GracefulLoser Not bad at all.]]''".]]
* ''Manga/AttackOnTitan'': Eren Yeager goes through this when he learns that his own mentor and comrade Annie was the Female Titan responsible for the slaughter of the 57th expedition, and (in the manga) can't bring himself to express hatred towards her (while hesitating to harm her personally in the anime as well). By the time he learns about Reiner and Bertolt however, his BlackAndWhiteMorality returns in full effect and he wants nothing more but to kill them "as excruciatingly as possible". This quote pretty much sums it up:
-->'''Eren:''' Bertolt... Reiner... ''[bites down his hand furiously to transform]'' DAMN YOU, YOU TRAITORS!!
* In ''Manga/{{Berserk}}'', Griffith faces all sorts of challenges to his dream without flinching, but when his best friend, the protagonist Guts, leaves him, [[spoiler:he throws his dreams away with a stupid mistake.]] A year later, after [[spoiler:being broken in both body and spirit,]] he clings to his humanity and even his hope... until he finds out [[spoiler:that Guts and his other friend, Casca, are in a relationship and are discussing the necessity of him leaving the Hawks again.]] ''Then'' he snaps, resulting in an epic FaceHeelTurn as [[spoiler: he makes a DealWithTheDevil to become the fifth member of the Godhand and sacrifices the Band of the Hawks, [[OhCrap saving Guts and Casca]] [[FromBadToWorse for last]]]].
* ''Manga/BlackClover'': Narrowly averted by [[spoiler:Licht]], who realized at the last second that [[spoiler:Lemiel]] never betrayed him. By this point, however, he was too consumed with despair [[spoiler:at the massacre of his fellow elves at the hands of the human nobles [[ManipulativeBastard Zagred]] manipulated]] to [[spoiler:[[DemonicPossession prevent the devil from possessing him]] and stealing his grimoire... [[DangerousForbiddenTechnique without turning himself]] into a [[AlmightyIdiot demon]] and [[LesserOfTwoEvils hoping that Lemiel could kill him]], that is]].
* ''Manga/{{Bleach}}'':
** Momo Hinamori sees [[spoiler:her captain, Sosuke Aizen,]] as more of a father figure, and loves him as such. [[spoiler:After Captain Aizen reveals that he not only [[FakingTheDead faked his own death,]] but was also EvilAllAlong, Momo is soon run through by the [[EmpathicWeapon Zanpakutō]] of Aizen himself.]] Momo ends up so broken from this betrayal, that, even after nearly dying, she's outright in denial about [[spoiler:Aizen's]] FaceHeelTurn, believing that he's being manipulated by [[spoiler:his [[TheDragon Dragon,]] Gin]] somehow.
** The same could be said for [[spoiler:Hisagi and Kira, lieutenants of Tousen and Gin, respectively; captains who defected with Aizen, and whom the two lieutenants greatly respected and admired. In the Fake Karakura Town Arc, Hisagi personally aids Captain Komamura in his fight against Tousen, and Kira [[BerserkButton becomes angered]] at the mere mention of his ex-captain's name]].
** [[spoiler:The Sternritter who survive being targeted by Yhwach's [[ThePurge Auswählen]] in order to bolster the [[PraetorianGuard Schutzstaffel]] become infuriated at being so callously [[YouHaveOutlivedYourUsefulness discarded]] by their King, and [[EnemyMine form a truce with the Shinigami]] in order to [[TheDogBitesBack get their revenge]].]]
* In ''Manga/Brave10'', Isanami doesn't take well [[spoiler:to [[TheMole Ana]] being a FalseFriend all along, and exiting having dealt serious damage to Rokuro and Sasuke. Neither does Sasuke, for that matter.]]
* ''Anime/CodeGeass'':
** About 2/3 of the way through the first season, Lelouch learns that his best friend Suzaku is the person who's been constantly wrecking his plans. Rather than feeling betrayed, he simply redoubles his attempts to recruit Suzaku for LaResistance. At almost the exact same point in the second season, after lots of misunderstanding and misdirected rage, the two are close to patching up their friendship...when soldiers rush in and arrest Lelouch for being a terrorist. Lelouch '''thinks''' Suzaku betrayed him (he didn't, he was followed), but it pretty well marks the absolute death of their friendship and the moment Lelouch stops showing Suzaku any form of respect or mercy.
** Then after being exposed to Lelouch's BrokenPedestal, Suzaku quickly becomes a Knight [[spoiler:of Zero, to be specific, the Knight above Knight of Rounds]] and TheDragon to the Emperor [[spoiler:Lelouch]]. [[spoiler:It's all part of their plan to have him kill Lelouch after they take over the world so he can bring peace through his own death, and Suzaku ''still'' cried over killing him]].
** And that apparent betrayal is followed by one on the part of the Black Knights, who were [[FalseReassurance falsely convinced by Schneizel]]. [[ChewToy Murphy's Law really has it in for Lelouch here.]]
** Also, Suzaku has it on his side when he finds out Lelouch has been opposing him as Zero, effectively ruining his plans to defeat Britannia by working with it so that he can change it from the inside.
* ''Anime/CyberpunkEdgerunners'': Though he hides it well, Falco is clearly more furious than anyone else on the team when [[spoiler:Kiwi]] betrays them, owing to the fact that of anyone else on the team, they were each other's closest friends.
* The Kira Task Force in ''Manga/DeathNote'' reacted to this when they finally find out [[VillainProtagonist Light Yagami]] is Kira in the end, especially [[WideEyedIdealist Matsuda]].
** Light himself seems to react this way a little bit when [[spoiler:Matsuda attacks him at the warehouse]]. "Matsuda, you idiot! Do you know who [[spoiler:you're shooting at?]]" A unique example since Matsuda is reacting to Light's own betrayal when this happens.
** This could also apply to L. In one episode of the anime, L tells Light that it'd be unfortunate if Light was Kira because he considers Light to be the only friend he's ever had. Of course, though, [[spoiler:L realizes Light betrayed him as Light smiles at his death]]. However, some argue that L was simply lying to trip up Light.
* ''Anime/DragonBallZ'': Nappa was willing to fight the much stronger Goku, until, of course, Vegeta betrayed him, and he was unable to do anything to defend himself.
** This happens to Trunks and Goten; they were more than willing to fight Buu alongside Vegeta until he (apparently) offed Trunks (who was briefly shocked by his dad doing this to him), after which Goten entered a very brief HeroicBSOD after this before Vegeta took him out as well. Obviously, this was due to [[RedemptionEqualsDeath Vegeta needing to be alone]] to sacrifice himself against the monster he brought into this world.
* In ''[[Anime/NeonGenesisEvangelion The End of Evangelion]]'', this is done twice (at least). In the past, when the first Dr. Naoko Akagi becomes the lover of Gendo Ikari, he instead callously betrays her by making a clone of his dead wife and makes it clear that she is not needed anymore. Heartbroken and enraged, she strangles the clone and then commits suicide by throwing herself from the control balcony. Years later, Dr. Ritsuko Akagi becomes ''another'' lover of Gendo, but she has rigged the MAGI computers to blow in hopes of killing Gendo in a RoaringRampageOfRevenge for ''both'' Akagis, only for her mother (in the programming of the MAGI system) to disable the bomb. Ritsuko is understandably devastated by this betrayal. Then, she is shot by Gendo. Yeesh, as if this show wasn't dark ''enough''...
* Yomi from ''Anime/GaReiZero''. Short story: she killed a fellow exorcist who is also a fellow clan member, in defense and in a partially justified rage. She expected her fiancee and her little sister to come to her defense since she lost her capability of speaking after that battle. However, her fiancee never comes for her due to family honor. The final straw was her coming to a conclusion that even her little sister believes that she's guilty, and she went the [[{{Manga/Berserk}} Griffith's]] way. It should be noted that said fiancee was working himself ragged(to the exclusion of his other, extremely important work) trying to prove her innocence so she wouldn't be cast out, and making preparations to take care of her in her disabled state, regardless of the outcome of his investigation. So even though she thinks he abandoned her... he's the one who was there for her the most. [[TearJerker Which only makes it more tragic.]]
* If Kazuki has any plot relevance in a particular arc of ''Manga/GetBackers'', this will happen.
* Happens to Issei Hyoudou in ''Literature/HighSchoolDXD'' when his first girlfriend Yuma Amano turns out to be the FallenAngel Raynare and he gets ImpaledWithExtremePrejudice.
* ''Manga/JoJosBizarreAdventure'':
** ''[[Manga/JoJosBizarreAdventureStardustCrusaders Stardust Crusaders]]'': Enya has been nothing but loyal to DIO, so she feels betrayed when he decides she's outlived her usefulness.
** ''[[Manga/JojosBizarreAdventureGoldenWind Golden Wind]]'': Narancia Ghirga and his former childhood "friend and mentor". He was Narancia's friend and Narancia trusted and admired him. He tricked Narancia into dying his hair blonde so he could frame him for beating and robbing an old woman, which got Narancia a year in jail. Then when Narancia got out with an infected eye, he spread the rumor that Narancia's eye infection had come from his mother and made everyone avoid him. Even worse is that previously Narancia trusted him enough to tell him about his mother's death, only for the older boy to use it against him. This whole story also made Narancia rebel against Diavolo who attempted to murder Trish, his own daughter and the person who trusted him.
** ''[[Manga/JoJosBizarreAdventureJoJolion JoJolion]]'': Aisho is a victim of this when his girlfriend takes advantage of his month-long sleep to sell his land.
* ''Manga/KaguyaSamaLoveIsWar'': Betrayal is the one thing that Kaguya absolutely cannot stand. She values {{secret keeper}}s above all, as she was already betrayed by classmates in elementary school who revealed that she is [[spoiler:the child of a mistress]]. During the class trip in Kyoto, [[spoiler:Kaguya's brother, Unyo, intends to break Kaguya by revealing that [[HeterosexualLifePartners Hayasaka]] is TheMole for her eldest brother, Oko. However, while Kaguya is definitely upset, she is willing to hear Hayasaka out, shows empathy for how much Hayasaka had to go through and quickly forgives her.]]
* ''Anime/KaleidoStar'''s Sora puts up with a hell of a lot of grief in the second season -- not that the first season was a picnic, but still. At various points in the storyline, she is demoted, fired, paired up with a partner who verges on sociopathic, and spends the whole series struggling to earn the title of Kaleido Star -- a title which she had won fair and square by the end of the first season, only to be usurped by [[AlwaysSomeoneBetter a newcomer who wields far more power than any newcomer to the troupe has a right to]]. Through most of it, she remains perky and cheerful, convinced that everything will work out all right in the end... but when Layla, Sora's idol, suddenly turns on her and sides with Sora's rival, the poor girl finally cracks.
* Dio from ''Anime/LastExile'' despises and fears his [[TheCaligula sister]], but he can handle facing her as long as he has [[BattleButler Luciola]] on his side. When he believes (possibly correctly) that Luciola has betrayed him to her, he snaps and hits him across the face.
* ''Franchise/LyricalNanoha'':
** In ''Audioplay/StrikersSoundStageX'', Teana is rather badly shaken by the discovery that [[spoiler:Runessa Magnus, whom she had come to trust enough to offer her a permanent partnership,]] is the mastermind behind their current case.
** This comes up twice with the same person (from both sides of the equation) in ''[[Anime/MagicalGirlLyricalNanohaReflection Reflection]]'' and ''[[Anime/MagicalGirlLyricalNanohaDetonation Detonation]]''. [[spoiler:Iris ends up completely broken when her best friend Yuri murdered her father and everyone else she cared about, and plots for revenge with the express purpose of making her suffer for her betrayal before killing her. To that end, she uses Kyrie as her pawn by posing as her best friend for ten years, only to turn on her as soon as she reaches where Yuri was sealed. Then it turns out that her father was the actual culprit of the massacre and Yuri had only killed him in self-defense, meaning that she had turned against two friends for what was essentially a lie. Given that ''Lyrical Nanoha'' is an incredibly idealistic series, both Kyrie and Yuri were willing to forgive her.]]
* ''Anime/MagicalProjectS'': Sammy the magical girl had no problem beating the monster of the week until she discovered her worst enemy was her best friend Pixy Misa; she couldn't believe it. The same happened to Misao (aka Pixy Misa); she ran away from her home and her school when she believed that she had betrayed her best friend.
* [[RivalTurnedEvil Sasuke Uchiha]] of ''Manga/{{Naruto}}'' has reduced many a protagonist to tears with his willingness to kill his TrueCompanions in cold blood, including the eponymous one, who starts bawling like a little kid when he realized that his former best friend-slash-substitute-brother is serious about killing him. A special mention goes to him telling a [[BoringButPractical very useful]], deeply loyal teammate (who was also in love with him) who had just been taken hostage not to move -- naturally, her expression relaxes into a blissful smile... and then [[MoralEventHorizon he stabs her along with her captor.]]
** Sasuke himself has it when he learned that [[spoiler:the Hidden Leaf Village is truly responsible for the Uchiha Clan Massacre, giving him a reason of wanting to destroy it]].
* Played with in ''Manga/OnePiece'': Nami steals all the treasure and runs off with the crew's ship. In another arc, Nico Robin openly denounces her affiliation. Various reactions ensue, [[TheyreCalledPersonalIssuesForAReason reasons get explored]], [[AFriendInNeed bad guys get beaten]] and Straw-Hats [[TrueCompanions go on to next adventure together]].
* In ''Anime/OriginSpiritsOfThePast'', [[TheDragon Jessica]] serves as [[BigBad Shunack]]'s right-hand woman in the Ragna Army. At the end of the film, when she realizes that [[spoiler:Shunack is going to betray the Ragna Army]], she is understandably outraged.
* In ''Manga/PandoraHearts'', Jack is forced to kill his best friend Glen at the Tragedy of Sablier because Glen allegedly snapped and ordered the massacre of every man, woman, and child at the Baskervilles' mansion. In the biggest WhamEpisode of a series already known for its JustForFun/HolyShitQuotient, however, it's later revealed that [[spoiler:Jack himself was the one who betrayed (Oswald) Glen's trust by opening the doors to the Abyss and attempting to bring the entire world down into it so that he could meet Lacie again. Ironically enough, just the night before Jack's betrayal, Glen asked his servant Gilbert whether or not he trusted Jack, and when the latter replied that he did, Glen decided to do the same.]]
** [[spoiler:Oz]] is betrayed by [[spoiler:Jack when it's revealed that Jack was using him all along and actually considers him to be subhuman]]. Arthur Barma also applies and is of the [[IJustWantToHaveFriends friendless variety]], as he [[spoiler:was betrayed by Jack as well. Jack only befriended him so that he could later force him to write an account of the events of the Tragedy of Sablier that made Glen appear to be the villain and Jack the hero]].
* ''Manga/PetShopOfHorrors'' demonstrates the second type of Et Tu Brute. Leon is convinced that Count D is a serial killer by proxy. Yet the two form a fairly intense friendship regardless, with Leon spending most, if not all, of his spare time with D. Despite the constant banter and Leon's empty threats of arrest, the detective is clearly fond of D, and while he can't disregard the Pet Shop's body count, he doesn't let it disrupt their personal relationship. What ''does'' cause the breakdown in their association seems relatively minor by comparison to murder, but the intensely personal nature of the betrayal makes the difference: [[spoiler: D sends Leon's little brother Chris, who D and Leon have been looking after for the past year, back to his adoptive parents (actually his aunt and uncle) without telling Leon what's happening. Moreover, Leon is distressed by D's apparent lack of regret or sorrow over losing Chris.]]
** Arguably, it's D's reaction (or lack thereof), to the above event that constitutes a "betrayal" to Leon: [[spoiler:for one, D doesn't send Chris back, Chris decides to go by his own free will, and two, since Chris is talking again, he couldn't stay in the pet shop even if he wanted to. This is emphasized at the end of that chapter, and even earlier in the story.]] What really gets to Leon is D being (acting?) completely indifferent over witnessing [[spoiler:Monica]]'s death and [[spoiler:distancing himself from Leon, treating him and, as Leon feels, Chris too, coldly and indifferently, as he did when they first met.]]
* In ''Manga/ReincarnationNoKaben'', Ironically has this trope, group of 'Greats' get betrayed by [[spoiler:Ceasar which was a spy for Sinners all along from the beginning.]].
* Utena is stabbed by Anthy in the second to last episode of ''Anime/RevolutionaryGirlUtena''.
* ''Manga/ASilentVoice'': Ishida's friends betray him and make him into a [[TheScapegoat scapegoat]] rather than face punishment for their part in [[CuteMute Nishimiya's]] bullying. Afterward, to add insult to injury, they also start bullying him.
* ''Manga/SnowWhiteWithTheRedHair'':
** Zen had difficulty making friends as a child due to everyone seeing his position rather than him as a person, when he does finally make a friend said friend turns out to have been a false friend all the while working with a group helping a disgraced noble get revenge against the royal family by plotting to assassinate Zen. Zen stands frozen rather than fight while his brother and Mitsuhide rescue him, saves a token from his would-be friend in remembrance, and has a difficult time trusting anyone for years afterwards.
** PlayedForLaughs during a snowball fight when Obi kicks a snowball to deflect it from hitting Ryuu, and it splatters across Shirayuki's face. Ryuu and Kirito give Obi a long stare and question his loyalty as Obi begs forgiveness from Shirayuki while she stands there looking worn out by everyone's antics since he's her bodyguard.
* Hot Shot manages to hold off the bulk of Megatron's Decepticons in ''Anime/TransformersArmada'' (albeit while wielding the Star Saber). However, when [[spoiler:Sideways]] betrays him and defects to the Decepticons, he falls to his knees and passively lets the Decepticons beat him into a metallic pulp.
* In ''Manga/VampireKnight'', Zero has this feeling when he found out Yuki [[spoiler:is a Pureblood vampire all along]].
[[/folder]]

[[folder:Fan Works]]
* Attempted but ultimately averted in Chapter 70 of ''Fanfic/BlazBlueAlternativeRemnant''. When Terumi confronts Ruby and reveals himself to her, he's confused as to why she isn't more hurt by his betrayal since he helped her in the past regarding the White Fang investigation, showing that he wanted to invoke this reaction from her. As Ruby points out, they barely interacted at all and he had several red flags present when they first met, so not only does his "betrayal" lack impact, it also isn't as unexpected to her as he believes.
* ''Fanfic/ChildOfTheStorm'' has this as Hermione's reaction once she finds out her true parentage and that Harry both knew (having worked it out a few months before) and had kept silent at her biological mother's request, if reluctantly since Wanda is his [[ParentalSubstitute godmother]], and furiously defended her once Hermione started laying into her despite Wanda's own protests. She's hurt and enraged, and perceives this as him taking sides against her. While her judgement is partly based on resentment and view that she's TheUnfavourite by comparison, it's heavily implied that Harry picked [[FamilyOfChoice family]] over friends.
* ''Fanfic/TheNightUnfurls'':
** After the assault of the Black Fortress is deemed a success, Vault and the Black Dogs, who are considered the finest and most trustworthy [[HiredGuns mercenary]] [[PrivateMilitaryContractors group]] in Eostia, decide to betray [[TheAlliance the Seven Shields]] and declare war on Eostia, knowing that the vast resources and armies are enough for them to [[AmbitionIsEvil claim power]] for themselves.
** The dark elves of Loraine, Grace included, share this sentiment when Olga, their queen who has fought for them, sacrificed the city to the war bands of the orcs, leaving them to be subjected to RapePillageAndBurn.
* ''Fanfic/RaiseYourVoiceAgainstLiars'': After Lila's [[BitchInSheepsClothing true nature]] [[LiarRevealed is revealed]], Marinette is forced to examine just how badly her [[FairWeatherFriend "friends"]] let her down, ranking them all on a scale of 1 to 10, with 10 being [[ThisIsUnforgivable unforgivable]]. Nino and Alix, who are [[TheAtoner both trying to atone]], rank 2 and 3; Kim, Rose, and Max all rank 6; and [[{{Hypocrite}} Alya]] and [[BetrayalByInaction Adrien]] rank the highest at 8. Over time, everyone aside from Alya manages to lower their rankings, mostly because Alya [[NeverMyFault refuses to admit any fault]] and acts offended at the very ''suggestion'' that she needs to do anything to regain Marinette's trust.
* ''Fanfic/TheSagaOfTanyaTheFirebender'': [[VillainProtagonist Tanya]], having grown dissatisfied with her superior Admiral Zhao has him killed; [[FrameUp pinning Avatar Aang as his murderer]] and taking command of the Fire Nation Fleet Zhao had assembled to conquer the Northern Water Tribe herself. After learning the truth, Princess Azula tried to use it as leverage to make Tanya bend the knee to her; only for the newly-promoted Admiral Tanya to publicly announce that [[ThePowerOfLegacy she'll rename the conquered Northern Water Tribe Capital after Zhao]], invariably pissing Azula off even more [[SelfMadeMan with Tanyas' meteoric rise to power]].
* ''Fanfic/ACompleteTurnabout'': Phoenix's first day in the alternate universe leaves him with the distinct impression that his counterpart was an utter {{Jerkass}}, HatedByAll of the people that are his friends back home. However, he later learns that they used to be on much better terms and that their anger and coldness towards him is due to how he'd ''recently'' betrayed their trust.
* ''Fanfic/{{Dominoes}}'':
** When Shinichi learns several of his friends are secretly members of the Irregulars, he's hit the hardest by Ran's betrayal. The two of them were dating, yet she kept him LockedOutOfTheLoop and increasingly treated him like he were nothing more than a fragile possession she needed to protect, all while expecting him to become a LoveMartyr and be the perfect, unquestioning boyfriend she pictured in her head.
** During the Black Hole Crisis, Shinichi finds himself being betrayed by [[spoiler:Kaito when the thief steals the Meta-Nullifier he needs to save Santa's life]]. While they subsequently save Shinichi from [[spoiler:the airstrike ISHA launches, they still leave Santa to die]].
* In ''Fanfic/CatchABriefReflection'', Light Penny and Snap both call out Light Rudy for how cruelly and callously he treated them despite supposedly seeing them as friends, to the point that he left Snap ''crippled''. Following his HeelFaceTurn, he's genuinely remorseful about his actions.
* In ''Fanfic/FracturedFates'', Shiro is ''crushed'' when it's revealed that [[spoiler:his closest friend in the killing game, Itachi, not only murdered one of their classmates but also [[UnwittingPawn tricked him into assisting with the crime.]]]]
* ''Fanfic/GraduateMeetingOfMutualKilling'': In the Chapter 3 trial, Reiji Ohmoto is accused of the murder. His brother Yukio defended him to the very end and doesn't take it well when [[spoiler:it's confirmed and revealed that Reiji really was the mastermind behind the murder and purposely used Yukio as a pawn to get himself free]].
* ''Webcomic/KillingGameDeluxe'':
** Mahiru is horrified when she realizes that [[spoiler:Mikan was the one who killed Hiyoko in their [[VisualNovel/Danganronpa2GoodbyeDespair first killing game]]]].
** Makoto and Kaede are not happy when they realize [[spoiler:Sayaka was Hiyoko's killer]].
* ''Fanfic/TheSaviorKingTheMasterTacticianAndTheQueenOfLiberation'':
** Byleth, Claude, Rhea, Dorothea, and Dimitri are all hit extremely hard by the revelation of the Flame Emperor's SecretIdentity.
** After Fort Merceus falls, the Imperial soldiers who surrendered are left utterly horrified by [[spoiler:Edelgard dropping the javelins of light upon Merceus]], realizing that they would have slaughtered them all just to keep the area out of the hands of the Kingdom/Alliance. A later interlude shows that the Adrestian civilians aren't taking this revelation any better.
** [[spoiler:Hubert]] feels this way towards Bernadetta, as she chose to side with the Church over [[spoiler:her homeland]].
** After Petra switches sides, [[spoiler:Edelgard]] is left wondering whether [[spoiler:Casper or Ferdinard]] will turn upon them next.
* In ''Fanfic/OneStepAhead'', the pain of Bloo [[ABirthdayNotABreak humiliating Mac on his birthday]] is only amplified by how many of his friends at Foster's participated in the prank, leaving him feeling like he was betrayed by practically everyone he knew.
* ''Fanfic/AbraxasHrodvitnon'': Vivienne Graham has taken her Monarch colleague and friend [[Film/GodzillaKingOfTheMonsters2019 Emma Russell's betrayal]] to heart after the latter's death. Likewise with Emma's own daughter Madison, to the point that hearing Mariko even ''sound like'' she's about to condone the late Emma's crimes [[BerserkButton makes Madison furious]].
* The plotline of ''Fanfic/BegrudgingAssistanceRequests'' is kicked off when Henry betrays Ellie so that he can escape the Complex without her. Ellie then turns to Warden Dimitri and offers an alliance, offering to help him track down and kill Henry in exchange for her freedom.
* ''Fanfic/ForTheGloryOfIrk'':
** Xia feels utterly betrayed by Vero when she finds out that he's [[spoiler:[[TheMole spying for the ousted Tallests' rebellion]]]]. She doesn't even give him a chance to explain the reasons for this before she [[spoiler:has him arrested]].
** Dib is also left feeling utterly betrayed when he learns that Zim (who has long since become his best friend) [[spoiler:created [[RobotBuddy CB]] from [[AIIsACrapshoot the AI that nearly wiped out humanity]]]] and makes it clear that he's not forgiving Zim for this any time soon.
* ''Fanfic/TheUltimateEvil'':
** Jade is furious with Valerie when she learns the latter knew that she was [[spoiler:Hsi Wu's Other]] and wilfully kept the truth from her among a couple other secrets. She quickly comes to regret being so harsh once Valerie ends up in serious trouble.
** This works two ways when [[VillainProtagonist Shendu]]'s spirit returns and [[spoiler:possesses Valerie]]: he's incorrectly assumed that Valerie betrayed him to be banished and face his siblings' wrath in the Netherworld, so he doesn't hesitate to threaten bloody retribution on her loved ones if she doesn't do as he says. Valerie in turn is hurt and shaken by what Shendu is putting her through and declares the Chan Clan are right about him being nothing more than a monster.
* In ''Fanfic/AmbienceAFleetSymphony'', Suzukaze is shocked when, while defending her ship sister Murasame from an aggressor, Murasame, instead of being grateful, says she is ashamed of Suzukaze's actions. [[spoiler:Suzukaze is so distraught that she flees from the fleet.]]
* PlayedWith in ''Fanfic/ForHisOwnSake'':
** Naru takes this attitude towards anyone she perceives as having betrayed her, lashing out ''viciously'' at all and sundry. Unfortunately, Naru is [[ItsAllAboutMe extremely self-absorbed]], and her definition of 'betrayal' basically translates to 'isn't doing everything I want and completely supporting my point of view'.
** PlayedStraight in the denouncement: when Granny Hina makes clear that [[spoiler:bailing Naru out of jail is the last thing she intends to do for her]], Naru immediately rips into and berates her. This hits Granny Hina hard, as she realizes that everything she did for Naru [[TheFarmerAndTheViper was completely unappreciated]], and she invested so much trying to help someone who was AllTakeAndNoGive.
* ''Fanfic/MaylusRevenge'': Maylu feels this way towards Roll after the events of ''[[BrainwashedAndCrazy Evil Empress Roll]]''. Roll in turn feels this way about Maylu when she learns that her former friend [[FaceHeelTurn defected to World Three]] to get revenge on her [[DisproportionateRetribution for being brainwashed]], which resulted in her unable to continue in the N-1 Grand Prix.
* PlayedWith in ''[[Fanfic/TheLamentSeriesChaoticNeutral Chloe's Lament]]''.
** When Chloe learns that her ChildhoodFriend Adrien was [[SecretIdentity Chat Noir all along]], she's shocked and shaken by the notion that he didn't defend her against Ladybug 'unjustly' depriving her of the Bee. She also can't understand why he protests her plan to turn the whole world into her [[MindControl mindless servants]], seeing this as her OnlyFriend turning against her rather than him [[GrewASpine growing a spine]] and calling out her callousness.
** In the [[RealityWarpingIsNotAToy new reality created by her Wish]], she's equally stunned upon overhearing Adrien admit that [[WeUsedToBeFriends he doesn't really consider her his friend anymore]] and is mostly nice to her out of pity over how her bullying has made her a social pariah. This brings her to the cusp of a HeelRealization before [[IgnoredEpiphany frantically insisting]] that he's betrayed her, just like everyone else.
* ''Fanfic/{{Couturiere}}'': Marinette is akumatized into the titular akuma after the stress of having Lila [[MaliciousSlander convince everyone]] that she's [[MadeOutToBeAJerkass been bullying her]] boils over. It's shown that she was stuck particularly hard by how Alya refused to even ''consider'' anything Marinette was telling her, as well as Adrien, the only other one who knew about Lila's true nature, [[BetrayalByInaction staying silent]] and not offering so much as a single word in her defense.
* In ''[[https://justcourttee.tumblr.com/post/623934405359140864/trigger-warning-after-posting-one-too-many-of Here]]'', Alya finds herself charged with defamation due to posting footage of her [[GossipyHens gossiping with]] [[BitchInSheepsClothing Lila]] on the Ladyblog. Lila is her only CharacterWitness; however, Lila [[BackfireOnTheWitnessStand immediately throws her under the bus]], claiming that Alya [[PlayingTheVictimCard FORCED her]] to say all those [[MaliciousSlander horrible things]]. She even offers false evidence of the 'scripts' she supposedly followed.
* ''Fanfic/TheKarmaOfLies'': When Lila skips town, she leaves all of the classmates who trusted her much poorer for the experience... especially Adrien, [[TheFarmerAndTheViper whom she stole a lot of money from]]. Nino and the rest of the class do their best to support Adrien during this trying time, only to learn that he'd known about her true nature for much ''longer'' than the rest of them, but had [[BetrayalByInaction refused to do anything]], only speaking out against her crimes after '''he''' was personally victimized.
* ''Fanfic/LadyBugOut'':
** Marinette decides that Ladybug needs to [[StartMyOwn start her own blog]] when Alya ignores the heroine's wishes and posts a picture of Ladybug and Chat Noir KissingUnderTheInfluence of Oblivio's LaserGuidedAmnesia on the Ladyblog while deliberately omitting the context. Alya goes on to claim that being a superhero makes Ladybug a 'public figure', and that this means she has no right to privacy or to defend herself against misrepresentation, gossip, or speculation.
** Alya in turn sees Ladybug's decision to start a 'rival blog' this way, since Ladybug telling the truth about what happened tanks the Ladyblog's reputation. She also considers Marinette to have betrayed her, due to her involvement with setting the blog up.
** Nino gets hit hard by this when he learns that Adrien was aware of Lila's true nature but stayed silent and [[BetrayalByInaction let her keep stringing everyone along]], along with leaving Marinette in the lurch.
** While Chat Noir aids Alya by offering her exclusive interviews and content for the Ladyblog, after he fails to notice that [[IsThisThingStillOn Ladybug's yo-yo has started recording and broadcasting live]], resulting in the public [[AccidentalPublicConfession getting to see how he treats his 'partner' in private]], Alya immediately cuts ties with him so that the backlash won't drag her any further down.
* ''Fanfic/{{Missing|MiraculousLadybug}}'': Nino gets blindsided by this when Adrien confesses to him that he'd ''known'' that Lila was a ManipulativeBitch, but not only chose not to do anything about her lying but advised ''Marinette'' not to do anything either. Despite his anger and frustration with Adrien, however, he still tries to convince him that it's not ''completely'' his fault that Marinette has disappeared.
* ''Fanfic/NymphAndTheCorruptedMiraculous'': Lady Nymph, Belle Aube, and Nino are all hit hard by this when they learn that [[spoiler:Adrien is Catastrophe]].
* In ''Fanfic/TheOneToMakeItStay'''s WhamEpisode, Marinette is thrown for a loop by the revelation that Chat Noir and Adrien are one and the same, as it hits her that he betrayed her in ''both'' of his identities. Everything Chat Noir did to hurt her was also done by Adrien, and vice versa. She cared about both, despite their less-than-stellar moments, but adding it all up proves overwhelming... especially when combined with how [[spoiler:he lost the ring to Hawkmoth due to his self-centered behavior]]. Driven home by a sequence where she reviews their actions, attributing all of the things done by one identity to the other.
-->''Chat'' told her to just let [[BitchInSheepsClothing Lila]] [[ConsummateLiar continue lying]]. ''Adrien'' [[EntitledToHaveYou got pushy about his feelings toward her]]. ''Chat'' enabled Chloe and made ''her'' feel bad for wanting her bully to be gone. ''Adrien'' attempted to kiss her several times ''without'' her consent.\\
Neither identity trusted her.\\
How did he fall so far from the partner that gave her hope on their second mission? He claimed to love her, but she would have traded every bit of that love for real trust in her decisions.
* ''Fanfic/TruthAndConsequences'': All of the Miraculous heroes are horrified when they learn that Ladybug made a [[DealWithTheDevil deal with Hawkmoth]]. This hits them all much harder upon learning that [[spoiler:she's Marinette, their "everyday Ladybug"]].
* ''Fanfic/{{What Goes Around Comes Around|MiraculousLadybug}}'': After Adrien [[SayingTooMuch accidentally reveals]] that he'd known that Lila was a ConArtist and deliberately kept the rest of the class in the dark about it, Nino thinks about all the times he'd previously stood up for Adrien, like when he fought to get him a proper birthday party. The notion that Adrien saw no reason to fight to protect him from being exploited by somebody like Lila in return hits him hard.
* PlayedForLaughs in ''Fanfic/DekuIThinkHesSomePro''; Aizawa reacts this way when Izuku "innocently" comments that he and Ms. Joke look good together.
* ''Fanfic/WatashiNoHeroAcademia'': After Ochako's friend Kiko reveals that [[spoiler:she's actually Himiko Toga]] and attacks her, Ochako is left feeling betrayed and wondering if their relationship was all just a lie.
* In ''Fanfic/AftermathOfAFallenStar'', Evening Glory is horrified to learn that Gallant Heart was one of the conspirators who helped assassinate Twilight.
-->'''Evening Glory:''' I can't believe it, Gallant Heart... ''the'' Gallant Heart. He's always been loyal, his family has been in the royal guard since it was founded. Shining Armor picked him as one of his best stallions at his wedding! His brother is even in the academy! How could... this is...
* ''Fanfic/BitterTearsAnAnonAMissFic'':
** The Humane Five feel this way when they think that Sunset has reverted to her old ways and betrayed their trust by posting their secrets online as Anon-A-Miss. Sunset herself is hit hard by how easily her friends come to that conclusion and turn their backs on her.
** The Humane Five are then hit with a straighter example after learning that the CMC were behind Anon-A-Miss all along.
* ''Fanfic/EchoingSilence'': On the day of the Royal Wedding, Twilight Sparkle has to deal with all of her friends refusing to [[CassandraTruth heed her warnings]] about the fake Candace, with Princess Celestia outright [[TheExile banishing her]] from Equestria and sending her to the Deadlands. It takes ''years'' before Celestia sends anyone to look for her, and the Princess [[PoorCommunicationKills doesn't explain to anyone]] just what is going on, which just makes matters ''significantly'' worse for all involved.
* ''Fanfic/FaithAndDoubt'': Twilight feels this way when all of her friends walk out on her after she accuses Cadence of being evil. Later, Twilight's parents call out Princess Celestia and the rest of the Mane Six on how they betrayed her.
* ''Fanfic/GettingBackOnYourHooves'': Trixie reacts this way when she realizes that [[spoiler:Helping Hoof]] is assisting Checker Monarch in her efforts to ruin Trixie.
* ''Fanfic/TheGreatAlicornHunt'': Twilight Sparkle gets a moment of this in chapter 28 when her loyal friend Spike (who has been incinerating much of the admittedly pointless paperwork between her and her captain) asks Twilight to give poor Flash Sentry a break.
* In ''Fanfic/AMadGlimmer'', Starlight Glimmer is convinced that all of the ponies who used to live in her equalist village rose up and collectively stabbed her in the back when they turned upon her and reclaimed their cutie marks.
* ''Fanfic/TheNuptialverse'':
** In ''Post Nuptials'', Twilight initially tells the others that she doesn't feel like they betrayed her trust, as she's [[spoiler:bottling up her true feelings on the matter. Eventually, they overflow and she calls them out]].
** ''Metamorphosis'' has Chrysalis anticipating this reaction ahead of time, as she makes a DealWithTheDevil with Discord [[spoiler:while planning to betray ''him'' as well]].
* ''Fanfic/ThePerilousRomanceOfSwans'': PlayedForLaughs when Cadance has Celestia sedated. The heavily medicated princess complains that "Cadance had her co-conspirators stab me in my bum-bum."
* ''Fanfic/TwilightThenTwilightNowUniverse'':
** Spitfire and Soarin' are left feeling this way when [[spoiler:Lightning Dust]] leads her own squad of Lightning Bolts to sabotage the Wonderbolts, as part of Dream Valley's plans to worsen Equestria's international reputation.
** Applejack feels this way when [[spoiler:Chocolate sells her to the Jewel Wizard]] at the start of the Grogar Wars.
* ''Fanfic/ACaseStudyInTheSturdinessOfTheRookie9'': Due to [[FandomSpecificPlot/{{Naruto}} different teams being assigned]], Ino-Shika-Chou is broken up, with each member winding up in a different group. During the Chuunin Exams, Chouji decides to take advantage of Ino's trust so that his team can steal her team's scroll in the Forest of Death. This has ''massive'' ramifications, with Ino being utterly ''furious'' and heartsick over being backstabbed by somebody she grew up alongside, and Shikamaru later admits that he wouldn't want to work with Chouji or his team during a mission.
* {{Downplayed}} in ''Fanfic/AndrogyninjasADoseOfVenom'': Sakura isn't exactly thrilled that Genma recommended that she be promoted to chuunin rank without consulting her first, complaining that many shinobi see civilian-born ninja like her as nothing more than CannonFodder, and her promotion means she's now going to be thrown against much bigger threats. Genma explains that while this is true, remaining a genin would've left her even more vulnerable to sabotage. Sakura isn't happy about this, but accepts his explanation.
* In ''Fanfic/{{Hakumei}}'', Kisame betrayed Zabuza's trust, exposing his plan to assassinate the Mizukage and breaking up the Seven Swordsmen of Mist. Zabuza never forgave him for this.
* ''Fanfic/ShipsAhoy'':
** Over the course of Part Two, Olive is forced to watch as Oscar slips further and further from her as her partner, prioritizing spending time in the Lab and solving gadgets over being out in the field and helping her realize her true potential as an agent. It all comes crashing down when Polly Graph, Oscar's cousin, tells her the truth about Oscar and how he was set on the path to becoming a Lab Director and going into the Science department completely of his own will -- she returns to Headquarters in a fluster only to find herself smack-dab in the middle of Oscar's promotion and subsequently breaks down completely. Likewise, Todd, Olive's co-worker, also turns to the side of evil...and it's purely because [[NotGoodWithRejection Olive rejected his advances]], which is something that she is also forced to come to terms with.
--->''[[Film/RevengeOfTheSith "So this is how liberty dies...with thunderous applause..."]]''
** ''Fanfic/OlivesLastPartner'', being a prequel story to ''Ships Ahoy!'', likewise has Olive get hit with betrayal, with her spilling out all of her emotions regarding Oscar's decisions to him and how much it hurt her. It leads him to have a serious MyGodWhatHaveIDone moment as he tries to justify his actions before apologizing.
* ''Fanfic/AAMLDiamondAndPearlVersion'': Haunter is ''extremely'' upset by [[spoiler:Rotom]] betraying the heroes. Things get better when [[spoiler:Rotom reveals they only "joined" Team Galactic in order to figure out why their ChildhoodFriend Charon joined the evil organization]].
* ''Fanfic/{{Null}}'': Jaune is betrayed and abandoned by Blake when she leaves Adam. Note that ditching your psychologically abusive [[PsychoExBoyfriend psycho boyfriend]] who can easily take care of himself in the wilderness is one thing, but abandoning a dependent, traumatized boy who can barely fend for himself, and who trusted you to keep him safe from the GovernmentConspiracy that has every authority on Remnant hunting him so he can be dragged back to a fate worse than death; and doing this in the middle of a populated city while going out of your way to steal his scroll, is ''another'' thing entirely. Understandably, Jaune can barely hear of or even ''think'' of Blake without getting angry afterwards.
* ''Fanfic/BeautifulDestroyerSailorMoon'': Makoto's career as the crime-fighting Mifune came to an abrupt end when her friend Yukio betrayed her to Balalaika. This led to Makoto being {{Blackmail}}ed to stop, along with getting kicked out of her expensive school, landing six months in juvie, probation until she's twenty, and being saddled with a perverted probation officer. Makoto bitterly thinks that about the only upside is that being expelled means she'll never have to see Yukio again.
* ''Fanfic/BloodAndHonor'': Despite all evidence to the contrary, Lord Sanguis firmly believes that Darth Baras would never betray her. When he does, it hurts her deeply. Quinn's own, smaller betrayal, as well as his attempt to leave her on Taris, are very unpleasant surprises as well.
* In ''Fanfic/LittleRebellions'', [[spoiler:Blue Diamond]] feels this way about her pearl betraying her, claiming that she was a "good master". Her pearl calls her out on this:
-->'''[[spoiler:Blue Pearl]]:''' Kindly? You did not shatter me, I suppose. Or Harvest me, or hurt me. No, you just had me stand there. Hold things, open doors for you, sing for you, dance for you. Had me suffer through every single one of your ridiculous emotional breakdowns.
* In ''Fanfic/TheVirtueOfRevenge'', the team is shocked to learn that Arsenal has become a member of the Outlaws. He defends himself by proclaiming that he was never their friend in the first place.
* ''Fanfic/ShadowsOverMeridian'': After learning that Vera [[spoiler: deceived her fellow Sky Hunters for her own selfish ends]], Amelia is utterly dismayed, because for all her differences with Vera, she never believed the latter would be capable of [[spoiler: stabbing her friends in the back like this]] (with the others feeling similar when they later learn about it}. Her feelings are empathized by Vathek, who's still reeling over the revelation that it was Caleb of all people who played a vital role in [[CreateYourOwnVillain making Kage an enemy]] by countermanding Elyon's orders and refused to come clean about it.
[[/folder]]

[[folder:Live-Action TV]]
* In the ''Series/AshesToAshes2008'' episode "Traitor", it is discovered that [[spoiler: DC Chris Skelton]] has been feeding information to corrupt cops for the majority of Season 2. This is the only time Gene Hunt ''ever'' becomes teary-eyed and he is sent into a [[HeroicBSOD BSOD]].
** This is especially heartbreaking given that the traitor is one of the most timid and innocent cops in the station and has previously turned down any and all temptations of police corruption.
** When the traitor is Interrogated, Gene [[TortureForFunAndInformation (who usually beats the crap out of suspects to get information)]] ''[[HeroicBSOD remains in a BSOD]]'' and barely talks at all while his DI Alex conducts the interrogation. When the Interrogation is over he gives a look of pure disgust and leaves the room, slamming the door behind him.
* ''Series/BabylonFive'': Michael Garibaldi winds up on both ends of this before it's all over.
** At the end of the first season, Garibaldi gets wind of a conspiracy to kill Earth Alliance president, but before he can do anything he's shot InTheBack by his own second, Jack. After he recovers and it's revealed what happened, he goes to Jack's cell, demanding to know why, then promising to be the one to [[ThrownOutTheAirlock push the button]] at his sentencing.
** In Season 4, Garibaldi is under MoreThanMindControl which eventually leads to him turning Sheridan over to the corrupt Earth Force. After this, Bester comes and releases the mental programming, leaving Garibaldi in his right mind again, and [[MyGodWhatHaveIDone fully aware of what he's done]]. He first tries to get in contact with his former allies, but they're not exactly sympathetic, and he has to beg Lyta to scan his memories to prove his story.
* The new ''Series/{{Battlestar Galactica|2003}}'' has some examples. These include: Starbuck's infidelity between Lee and Samuel Anders (Lee also does the same to his wife during this), Gaeta's StartOfDarkness and participation in a coup, Ellen Tigh's infidelity, Saul Tigh's murder of his wife, Baltar's desertion of his cult, and Cavil's actions towards ''anyone'' who disagrees with him.
* ''Series/BeingHumanUK'': Tom, being as sensitive as he is, doesn't take a hurtful betrayal from those closest to him very well, such as when he learns the truth about his parentage or when Kirby manipulates him to believe his flatmates view him as nothing more than a pet, both of which prompt a violent outburst from him. Both Tom and Alex are ''furious'' when they think Hal [[spoiler:has murdered Tom's crush for her blood just ''minutes'' after he came crawling to Alex for help detoxing him]].
* Hank's breakdown in ''Series/BreakingBad'' when he finally discovers that his brother-in-law, one of his best and most trusted friends, is Heisenberg simply ''oozes'' this.
-->'''Hank:''' It was you. All along, it was YOU! You son of a bitch! ...Heisenberg. HEISENBERG! You lying, two-faced sack of shit!
* In ''Series/BuffyTheVampireSlayer'': Amy, Angel(us), Spike (occasionally), Faith, Billy Fordham, Willow, Gwendolyn Post, and the list goes on. Even Xander may belong here, depending on how you interpret ''Xander's Lie''.
** In "[[Recap/BuffyTheVampireSlayerS3E12Helpless Helpless]]", Giles has Buffy BroughtDownToNormal on the orders of the Watcher's Council. Buffy acts like this is a ParentalBetrayal and swears to kill him if he ever lays hands on her again. They reconcile only because the Council fires Giles at the end of the Test after he tries to atone by helping Buffy. However in "[[Recap/BuffyTheVampireSlayerS7E17LiesMyParentsToldMe Lies My Parents Told Me]]", Giles tries to arrange Spike's death, causing another breach between them that carries over into the comic series.
** Wesley, on the ''Series/{{Angel}}'' side, betraying Angel and taking Connor.
** ''After the Fall'' has Gwen betray the team because [[spoiler: Gunn (who's a vampire) and]] the BigBad, says that he can help her. Her boyfriend, Connor, [[WasItAllALie is especially hurt by this.]]
* ''Series/TheCape'': Vince's best friend Marty helps to frame him as the supervillain Chess (under orders by the real guy). It's hinted he only did this under coercion, but of course it's a huge betrayal nonetheless to Vince.
* PlayedForLaughs in an episode of ''Series/ElChavoDelOcho''. One night Mr. Barriga dresses as a BedsheetGhost to scare Chavo as revenge for always hitting him when he arrives to the neighborhood, and the kids get scared and grab whatever they have at hand to use as weapons. Then, Professor Girafales arrives with a mariachi to give Doña Florinda a serenade, but the kids mistake him for the "ghost" and proceed to hit him. When Quico does, Girafales says "¿También tú, Bruto, hijo mío?" (which would translate as "Et tu, Brute, my son?")
* ''Series/ControlZ'': Isabela gets this after learning that her best friend María is the Honey Bunny who has been sleeping with Pablo, sarcastically telling both of them that they deserve each other.
-->'''Pablo:''' ''(to María)'' Did you tell her you're the Honey Bunny?!\\
''(Isabela turns to María with a shocked face)''\\
'''Pablo:''' We've been fucking a lot and you didn't even know!\\
'''Isabela:''' Keep going, then. You two deserve each other, "friend".
* ''Series/DarkDesire'': Íñigo is heavily hit hard with the reveal that Darío, his would-be son-in-law with whom he had formed a fatherly relationship, was responsible for the murder of his daughter Julieta.
* ''{{Series/Firefly}}'': The episode "[[Recap/FireflyE09Ariel Ariel]]" [[spoiler: has Mal angry at Jayne because he feels personally betrayed by Jayne who called the Feds on Simon and River while they were doing a job. This shouldn't come as much of a surprise to viewers, who have seen Jayne betray/defect in the past. Especially in light of the pilot episode, where Jayne says it'll "be an interesting day" when the money is good enough for him to sell Mal out.]]
-->'''Mal:''' Next time you stab me in the back, have the guts to do it to my face.
* ''Series/GameOfThrones'': The show is very fond of this kind of classical, Shakespearean flavoured betrayal:
** Jon Snow struggles against the mutineers at Castle Black quite a bit, until a boy he had taken on as his steward and personally mentored steps up, and all he can do is say "Olly?" [[spoiler: When he's later brought BackFromTheDead, he seems more traumatized by Olly's part in his assassination than the assassination itself.]]
** Robb Stark is betrayed by Theon Greyjoy in Season 2 when Theon seized Winterfell and this is his reaction upon learning this. He is also betrayed by Rickard Karstark and later to his death by his bannerman Roose Bolton and Walder Frey in the Season 3 episode "The Rains of Castamere", although he's too numb to register it. Furthermore, he feels deeply betrayed by his mother Catelyn when she releases the Kingslayer (Jaime Lannister) behind his back.
** Shae is this to Tyrion in Season 4, which is implied to be revenge for sending her away. She returns as Cersei's star witness at Tyrion's trial and is notably the only person at his trial who tells an outright lie against him as well as twisting the knife further and citing their most heartwarming moments together and twisting them to humiliate Tyrion in the most gutwrenching possible way. This is the testimony that utterly breaks Tyrion and launches him far past the DespairEventHorizon, causing the poor man to just fucking lose it and explode with several decades worth of bitterness and rage at his ungrateful family and the ungrateful nobles of King's Landing.
** Missing the bigger picture, Tywin can hardly fathom that his children would be capable of rebelling against him. His miffed line, "You shot me," ("why, this is violence") carries far more indignation and disbelief than it does fear or pain, like that of which UsefulNotes/JuliusCaesar expressed during his own assassination.
** Alton Lannister is killed by Jaime, his own older cousin, after telling him that he's his number one fan and that he would do anything to help him.
** In Season 3, Gendry enthusiastically joins the Brotherhood without Banners, claiming that they'll be the closest thing to a family he'll ever have... only to be sold by them to Melisandre the next episode.
* ''Series/{{Jeremiah}}'': In "Thieves Honor", Theo is caught off-guard and rattled when Sam and Keith, the head of her enforcers and technicians respectively, side with the coup against her after being her trusted companions and confidants in most of her previous scenes.
* ''Series/KamenRiderGaim'': Hase's Sengoku Driver is broken, leaving him unable to defend his team's stage from Team Baron. When he demands to know why his closest ally, Jounouchi, didn't step in to help him, Jounouchi reveals that he had been plotting to steal the stage himself, and that Baron simply beat him to it. The shock at the betrayal is written all over Hase's face.
* ''Series/LegendsOfTomorrow'': In the Season 3 premiere 'Aruba-Con', "Et tu, Sara?" is directed at Sara/White Canary by Nate/Citizen Steel when she agrees they should return the ship to Rip. Of course, given that the episode features Caesar himself, the line is far from a surprise.
* Creator/{{Lifetime}} has an entire series entitled "I Killed My BFF."
* ''Series/{{Merlin|2008}}'':
** Morgana leads Uther on to believe she's close to him, although they argue at times, and then she [[spoiler:betrays him and seizes the throne. Ditto could be said for her and Arthur.]]
** Morgana herself reacts like this when [[spoiler: Merlin poisons her to save Camelot.]] To be fair, at the time he probably didn't have any other choice and he was sure she had [[spoiler: already betrayed them.]]
* Queen Anne has moments of this in the ''Series/TheMusketeers'', especially in the second season. While she's furious about Marguerite's (her son's governess) betraying her and her friends to Rocheforte, it's Rocheforte (who she saw as a big brother/ mentor figure from her pre-France life) and his attacks against her that really horrifies her.
-->'''Queen Anne:''' I trusted him.
* Comedically referenced in the ''Series/MysteryScienceTheater3000'' episode ''Film/RidingWithDeath'', when a rift occurs between the protagonist and his obnoxious [[TheDeepSouth redneck]] buddy. Crow mournfully supplies: "Et tu, Billy Bob?"
* ''Series/Numb3rs'':
** The team is visibly crushed when [[spoiler:Colby is revealed to be a double agent for the Chinese]], especially David. After things are cleared up, their relationship is rocky for several episodes before they finally get it together again.
** Lt. Walker is furious when he learns that [[spoiler:one of his fellow cops, a narcotics officer, was so intent on [[WellIntentionedExtremist clearing the streets of drug dealers]] that he secretly collaborated with a gang member to clear rival stash houses, organized the gang member to go down in a raid when he wanted to come forward, and even killed the officer that pulled the trigger when he got suspicious and decided to go to Internal Affairs. Especially since he helped raise his murdered colleague's son afterward]].
** Don takes it hard when he finds out that [[spoiler:his FBI mentor turned out to be a DirtyCop, especially when he had to shoot him]].
* ''Series/OddSquad'':
** Horrifically deconstructed in "Training Day". During Olive's flashbacks, it's shown that Todd, [[spoiler:her former partner,]] began to turn to the side of odd, which culminated in him intentionally leading everyone off the trail of Tiny Dancer so he could allow her to create more oddness. This led to him [[TurnInYourBadge getting fired]], and while Olive tried to stop Oprah's decision, Todd took it in stride and willingly gave his badge to the Director before ominously wishing the two girls the best of luck and making his departure, much to the dismay of Olive, who is left in a state of shock and confusion. Weeks later, Todd returned under the new name "Odd Todd", opened up the vault containing the pienado (a tornado made of pie), and made an attempt to assassinate every one of his former co-workers, including Olive herself, who begged him to stop to no avail. Although Olive ended up being the SoleSurvivor of the attack (despite the fact that Oscar, Dr. O, and Oprah all eventually made it out alive) and managed to save her Headquarters, the betrayal turned her into a ShellShockedVeteran with a fear of pies and trauma from the incident. To make matters worse, in the present day, Odd Todd is still out there and actively tries to cause strife for Olive and her new partner Otto, for Precinct 13579, and for Odd Squad as a whole.
** Deconstructed again in "Who is Agent Otis?". Otis gives his {{Backstory}} in an (odd) court of law and explains that [[spoiler: he was the WhiteSheep of a [[FeatheredFiend villainous duck family]]]]. As a kid, he went along with the ducks and engaged in driving people away from parks with them, but when Brother Quack, the leader of the ducks and Otis's father (and brother) figure, devised an EvilPlan to make a machine to bring the Earth closer to the sun to end winter permanently, Otis, realizing that this would kill him, his family, and everyone on the planet, betrayed his family and ratted them out to Odd Squad, who stopped them before the machine could be activated and "arrested" them by putting them in dog crates and sending them to a Minnesota zoo. Although Otis got a second chance working for Odd Squad as Oprah's personal apprentice, his actions haunted him for a long time afterwards and he developed a fear of ducks due to being afraid that his family would find him and hurt him for his betrayal.
** One non-deconstructed example is in "End of the Road", with The Shadow, also known as [[spoiler:Olizabeth]], betraying [[spoiler:her older sister Opal]] by [[FaceHeelTurn becoming a villain instead of an agent]] due to [[TheAce Opal's]] tendency to be overprotective and stopping her from doing mundane things that cause little harm, like playing a tuba during band class. Throughout Season 3, Opal doesn't realize that The Shadow is someone she knows personally, instead treating her like any run-of-the-mill villainess in Odd Squad's expansive RoguesGallery, but when she eventually finds out her true identity via a DramaticUnmask, it manages to leave her in a near-wordless shock.
* ''Radio/OurMissBrooks'': In "Mr. Conklin Plays Detective", Principal Osgood Conklin is shocked to discover that Mr. Boynton seems to be the one who stole his typewriter and made a long-distance call to Rockaway, Minnesota on his office phone. [[spoiler:It turns out to be a misunderstanding. Mr. Boynton oiled the typewriter and put it in the office closet. Boynton left the money for the long-distance call in an envelope on Mr. Conklin's desk]].
-->'''Mr. Conklin:''' Et-tu, Boynton?
* Brutus' betrayal and assassination of Caesar is recreated in ''Series/{{Rome}}'' without the actual sentence being pronounced. Ciaran Hinds' [[FacialDialogue facial expression]], especially his eyes, carries the question "Et tu, Brute?" silently. Very effective.
** Though it's used as a HistoricalInJoke when Brutus uses the line with his own mother when she sides against him during an argument.
* Series/{{Scorpion}} season finale Swiss Family Scorpion has "et tu, Happy?"
* One ''Series/StarTrekTheNextGeneration'' had an abandoned Romulan prison camp full of Klingons, in which the two cultures merged and interbred. When Worf arrives and tries to teach the half-breed children about Klingon honor, the former Romulan prison commander sets up to execute him, and is standing there with his disruptor trained on Worf and all of the children go over and interpose themselves. He looks like he is about to pull the trigger anyway, but then his half-Klingon daughter (who has a crush on Worf) walks over to join them and utterly crushes his resolve.
* A better Star Trek example comes from ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'' when a recurring character reveals himself to have been a mole for the terrorist/freedom-fighters the Maquis. Although the Maquis in general are depicted as a moral grey zone for the show (their cause is sympathetic but their methods illegal), Cpt. Sisko takes it VERY personally, to the point of [[WhatTheHellHero destroying a planet's biosphere to keep the Maquis from using it]]. The former Mole even [[LampshadeHanging lampshades]] this trope in a later episode after the Maquis have been all but eliminated, pointing out to Sisko that it wasn't their agenda or even their methods that pissed off Sisko so much, it was the BETRAYAL by those Masquis who had once been Star Fleet officers, turning their backs on the Federation.
** Also crosses the line into {{Irony}} territory when you consider that Eddington's entire reason for being there was because Starfleet was worried about the existing head of security not playing by their rules.
--->'''Odo:''' Sir, have you ever reminded Starfleet Command that they stationed Eddington here because they didn't trust me?\\
'''Sisko:''' No.\\
'''Odo:''' Please do.
** Ironically, that same mole had previously betrayed Sisko by sabotaging the ''Defiant'' to stop Sisko from pursuing a ship...on orders from Starfleet.
** There's an even clearer example earlier on, where Sisko discovers an old friend and colleague to have switched sides. He's known the man for decades and has always seen him as someone who shares his values. The only difference between the two is that his colleague has experienced the problems that led to the foundation of the Maquis firsthand.
** Quark and Kira both react this way when, during the station's occupation by the Dominion, [[spoiler:Odo no-shows at a critical moment during a sabotage operation, causing the operation to fail and Rom to be arrested, because he's more concerned with the Link. Though Odo eventually has a HeelRealization and comes back to help.]]
** In the episode "Inquisition," Dr. Bashir is hurt when even Sisko suspects him of suppressing memories of betraying the Federation. It is later revealed that [[spoiler:everything that happened after a certain point in that episode was fake, including Sisko's reaction]].
* ''Series/Supergirl2015'': Nia is shocked and hurt when her sister Maeve says she's "not a real woman" in a moment of anger since she relates that while some people in town rejected her being transgender Maeve was her strongest supporter.
* In the ''Series/WhiteCollar'' episode 'The Dentist of Detroit' Mozzie is in danger from the Detroit Mob, and when Peter and Neal try to help him, Neal is forced to 'betray' him by giving him up to Peter as the Dentist of Detroit, to which Mozzie responds 'Et tu, Neal?' in a facsimile of this trope.
* Inverted on ''Series/XenaWarriorPrincess'' with Caesar's assassination. In Shakespeare's ''Julius Caesar'', Caesar wilts upon seeing his close friend Brutus among his killers. But in ''Xena'', Caesar had been cast as a much younger man(instead of middle-aged like the real Caesar was), and his response to realizing what was about to happen was an angry "And '''you''', Brutus!"
[[/folder]]

[[folder:Video Games]]
* While we never see Cipher's reaction to [[spoiler:his trusted {{wingman}} Pixy]]'s betrayal in ''VideoGame/AceCombatZeroTheBelkanWar'', many players were emotionally shaken by it.
* ''VideoGame/ANNOMutationem'': C expresses outrage after seeing G, B, and K have chosen to turn against him after his machinations have gotten out of control and that he needs to be stopped.
* Villainous example in ''VisualNovel/ApolloJusticeAceAttorney'' in the very first case, no less! When Apollo [[spoiler: turns against [[BigBad Kristoph Gavin]], who at the time is his boss and mentor, Kristoph says this to him almost word for word.]]
* A double-whammy in ''VideoGame/ArcTheLadTwilightOfTheSpirits'': Darc forms an alliance with Delma and her power-hungry brother Densimo. When his father's killers arrive, [[spoiler:they give Densimo a furble, which he can eat to expand his power. Densimo takes the offering without hesitation]]. Darc is also betrayed by his master [[spoiler:Geedo]], who treated him like crap but he still loved her for caring for him. When he realized how little he meant to both, he went off the deep end and killed both of them as well as the murderers, and vowed to become king of the Deimos.
* ''Franchise/AssassinsCreed'':
** Connor from ''VideoGame/AssassinsCreedIII'' is none too pleased when he finds out [[spoiler:George Washington]] is the culprit in the burning of his village, and also the fact that his father Haytham has been hiding this information from him that he cuts his ties with them both.
** At the midpoint of ''VideoGame/AssassinsCreedOrigins'', this hits Bayek and Aya as Cleopatra, who they just helped take the crown from her brother Ptolemy, has betrayed them by [[spoiler: allowing Lucius Septimus, one of the Order of the Ancients to remain at her side, ousting Bayek and Aya from her court. The trope namer is played straight at the end of the game with the Ides of March, starting with Aya getting the first stab into Caesar.]]
** In ''Videogame/AssassinsCreedRevelations'', Altair's younger son Sef was killed in the coup that occurred while Altair was away. The assassin who stabbed Sef to death twisted the (figurative) knife by claiming that he was being killed ''on Altair's orders''.
* In ''VideoGame/BaldursGate2'', one of the two events that every NPC party member will have an interjection about (the other being when you face down the FinalBoss) is if you bring TheMole with you [[spoiler:to Spellhold]] where they betray the party. Some party members will take it harder than others, with reactions ranging from [[ThisCannotBe a refusal to believe it]] to grim resignation, but practically all of the non-Evil party members will clearly be upset about it (except [[spoiler:Haer'Dalis]], who finds the betrayal [[GenreSavvy to be a great twist]]).
* In ''VisualNovel/BionicHeart'', the protagonist ends up hiding a fugitive android in his apartment because she needs his help in her [[OntologicalMystery ontological quest]]. If the main character chooses to confide in his best friend and coworker Tom, Tom ends up giving up both the protagonist and the android to the police, which leaves them in the hands of the [[CorruptCorporateExecutive corrupt corporate executives]] that were pursuing the android in the first place.
* In ''VideoGame/BlackMesa'', the scientists can quote this verbatim if you [[VideoGameCrueltyPotential attack them]]. After all, the only thing worse than being trapped in a facility filled with murderous aliens and military death squads is the knight in {{powered armor}} that's supposed to protect you from them suddenly turning against you.
* ''You'' can elicit this reaction if you decide to go for the bad ending of ''[[VideoGame/TheCaligulaEffect The Caligula Effect: Overdose.]] '' The game allows you to both [[MoleInCharge lead the good guys while joining the villain team in disguise,]] and the bad ending has the player character reveal the ruse right before siding with the BigBad. Your party members, [[BrokenPedestal all of whom looked up to you,]] are understandably horrified, enraged, and heartbroken, and you get treated to one hell of a series of [[TheReasonYouSuckSpeech reason you suck speeches]] as you fight your way through them all.
* ''VideoGame/CelestianTalesOldNorth'': [[spoiler:After Alain reveals that the new Levant heir is Sophia's unborn child, Severin angrily attacks him, stating that because Alain is infertile, not Sophia as widely believed, he couldn't possibly be the child's father, and therefore the child is not a legitimate heir]].
* ''VideoGame/DevilMayCry'':
** Dante in ''VideoGame/DevilMayCry1'' is hired by Trish to look for Mundus on an island. This is because she's working for him. When Dante finds that out, he is not happy about this. He and Trish finally make up in the end, anyway.
** In ''VideoGame/DMCDevilMayCry'', Dante has been working closely with Kat and Vergil to aid "The Order" to overthrow the hold the demons have on the world at Mundus's control. Then [[spoiler:after Mundus falls, Vergil reveals that his efforts were working to remove Mundus from power and seat himself and Dante as rulers of humanity going forward. Dante is shocked by this and refuses to accept Vergil's outcome, leading the brothers to fight to the death]].
* Fenris of ''VideoGame/DragonAgeII'' is a former Tevinter slave on the run from his master, Denarius, who is... not a nice man. He catches up to Fenris in the last third of the game, while Fenris is in Hawke's company, and Hawke has the option of fighting him off -- or [[WhatTheHellPlayer giving Fenris back to him]]. Fenris hits this reaction hard, especially if he and Hawke are friends, and ''especially'' if he's in a romance.
** Hawke will certainly feel this trope [[spoiler: when Anders lied to them about the purpose of his last companion quest which is to blow up the Chantry in order to incite mage rebellion that spread across Thedas. This is cemented when they decide not to support Anders and executes him right on the spot. Even when they discredit Anders' actions at the climax of the game and is simply an unwitting accomplice in his plans, Hawke still ends up becoming a fugitive because of this.]]
* In ''VideoGame/DragonAgeInquisition'''s ''Trespasser'' DLC, there is a chance of this happening. If you [[spoiler:did Iron Bull's quest and made him pick the Qunari over his friends, he will betray you and your group and become hostile during a fight with some Qunari. Since this happens late in the final DLC of the game and the deciding quest happens early on in the base game, you may have spent many hours with him in your party and probably forgot all about your choice. Made even more devastating if you have Dorian, his romantic partner, with you as well.]]
* ''VideoGame/DragonQuestIV'': Hank Hoffman's best friend turned on him while searching Casabranca/Branca Cave. At least, that's what it seemed like at the time...
* ''Franchise/TheElderScrolls'':
** In ''[[VideoGame/TheElderScrollsIIIMorrowind Morrowind]]''[='s=] backstory, one of the [[TheRashomon conflicting accounts]] of the final days of [[FounderOfTheKingdom Lord]] [[PlotTriggeringDeath Indoril Nerevar]] states that he was betrayed and murdered by his three trusted councilors, known as the Tribunal, after they became obsessed with the potential powered offered by the [[CosmicKeystone Heart of Lorkhan]]. According to this account, they each poisoned Nerevar in a different way as he meditated to commune with his [[OurGodsAreDifferent Daedric patron]], Azura. The Tribunal then tapped into the power of the Heart in order to [[DeityOfHumanOrigin become]] [[PhysicalGod gods]]. During the game, in conflict with the [[CorruptChurch Tribunal Temple]]'s official story, Vivec will admit that he betrayed Nerevar. In one of his [[FictionalDocument writings]], hidden in metaphor, he states that he (as the mortal Vehk) did in fact murder Nerevar.
** ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'':
*** The Ebony Blade is a unique two-handed katana with a LifeDrain enchantment that increases in power when you use it to kill characters who consider you a trusted friend, reaching its full power after 10 kills.
*** Jarl Balgruuf will chew you out if you side with the Stormcloaks and [[spoiler:sack Whiterun]].
* ''VideoGame/FalloutNewVegas'': Mr. House essentially invokes this if you kill him. Caesar as well if you had sided with him and then kill him in the aptly-named quest "Et [[{{Pun}} Tumor]], Brute?" Dr. Klein says this to [[spoiler: Dr. 8]] in Old World Blues [[spoiler: if you get him to side with you in the final battle]].
* [[spoiler:Tohsaka to Archer]] in ''VisualNovel/FateStayNight'''s Unlimited Blade Works route. After keeping calm throughout the story, she's devastated and doesn't hide it terribly well when he betrays her ''twice.'' On the plus side, the event is a catalyst for [[spoiler:her RelationshipUpgrade with Shirou. It's also a real bonding experience for her with Lancer.]] Hell, this is the only reason Saber exists. [[spoiler:Although she fought virtually the entire world as King of England, and never lost a single battle for 12 years, she died at the hands of her own trusted men and specifically by the hands of her "son" Mordred, though Mordred [[CallingTheOldManOut likely saw it as answering a betrayal of her own for shunning her true identity]].]] As well as Archer, [[spoiler:who ended up getting betrayed and killed by the very people he dedicated his life to protect.]]
* ''Franchise/FinalFantasy'':
** An EasterEgg of this exists in ''VideoGame/FinalFantasyX''. The Aeon Anima, Seymour's personal Aeon, is [[spoiler:the spirit of Seymour Guado's mother]]. If you summon Anima in the final battle against Seymour (the only Seymour battle you can have her for), he doesn't take it well:
-->"''You'' would oppose me as well?!? So be it!"
** In ''VideoGame/FinalFantasyXIII'', Sazh had no problem fighting with Vanille against PSICOM until [[spoiler:he realized that Vanille was the reason his son became a l'Cie he was about to kill her and commit suicide. He fortunately came back to his senses.]]
* In the ''Franchise/FireEmblem'' series:
** In ''VideoGame/FireEmblemFates'', the unfortunate protagonist will be getting this from ''someone'' since they have to decide between siding with their birth family or their adoptive family in a war. [[spoiler:TakingAThirdOption means getting this from nearly ''everyone'', though they do eventually get their siblings on both sides to join them.]]
** In ''[[VideoGame/FireEmblemGaiden Fire Emblem Echoes: Shadows of Valentia]]'', [[spoiler:Berkut]] takes it very, ''very'' badly when he finds out that [[spoiler:Rudolf had been lying to him for his entire life and that he never actually had a chance of becoming emperor of Rigel, a goal he had worked his whole life for]]. It ultimately becomes a deconstruction when [[spoiler:Berkut actually goes insane due to the betrayal and proceeds to sacrifice his fiancee to the local MadGod in exchange for the power to earn what he was always led to believe was rightfully his]].
** ''VideoGame/FireEmblemThreeHouses'' has plenty to go around after [[spoiler:Edelgard]] is revealed to be the BigBad Flame Emperor.
*** [[spoiler:Edelgard's stepbrother and childhood friend]] Dimitri goes completely berserk when he discovers the truth, as he has come to believe that they orchestrated the Tragedy of Duscur that resulted in the deaths of all of his family and many of his knights. He becomes completely obsessed with ripping their head off from that point forward.
*** On the Silver Snow route, Byleth doesn't take the betrayal very well at all and remains with the Church of Seiros to bring them down even if it means fighting [[spoiler:the house leader they've fought alongside and taught for nearly a year]].
*** On the Crimson Flower route, [[spoiler:Byleth defects to her side and takes nearly the entire Black Eagles class with them. This leads to Rhea, Seteth, and Catherine denouncing you as a traitor, and depending on who you have and haven't recruited you can easily destroy several friendships this way.]]
* Villainous example in ''[[VideoGame/GalaxyAngel Galaxy Angel: Moonlit Lovers]]''. In Chapter 4, Nefuria suddenly backstabs Rezon Mayzon by attacking his ship, revealing that she'd just been playing him all along. Then she remotely takes control of his ship, sending it in a collision course against the elsior before activating a self-destruct mechanism, killing him in an explosion. Even the Elsior's crew is outraged by this.
* ''VideoGame/GrandTheftAutoSanAndreas'': CJ is pretty hurt when he finds out [[spoiler: his best friends Ryder and Big Smoke had been working with the Ballas. A few seconds later it's [[TheReveal revealed]] that they arranged the hit on his brother that took their mother's life]].
* ''Franchise/{{Halo}}'': The Arbiter fought for the Covenant against humanity with no problem at all, but when the Prophets (who had given him a second chance by making him the Arbiter to begin) betray him and the entire rest of his species (with the Arbiter himself betrayed by the Prophets' main enforcer Tartarus), the Arbiter is forced to ally with humanity and lead a rebellion against the Covenant.
* In ''VideoGame/InFamous'', Cole is incredulous when Zeke attempts to activate the Ray Sphere a second time, which would further devastate Empire City because [[IJustWantToBeSpecial Zeke really wanted superpowers]]. Even after the "asshole makes the choice to kill thousands," in Cole's words, it doesn't do anything because Zeke's not a Conduit. Even so, Cole is so stunned by Zeke's betrayal that he hardly notices when a tower collapses right on top of him.
* ''VisualNovel/KatawaShoujo'': when Hisao is forcefully woken up by Shizune and Misha, this trope is humorously invoked.
* Cole Phelps in ''VideoGame/LANoire'' has no problem working with Roy Earle, despite the fact they don't like each other until [[spoiler:he discovers he's the one who reported his affair with Elsa Lichtmann to the corrupt officials.]]
* ''VideoGame/TheLegendOfHeroesTrails'':
** ''VideoGame/TheLegendOfHeroesTrailsFromZeroAndTrailsToAzure'': Having considered [[spoiler:Dieter and Mariabell]] as a father figure and her best friend respectively, Elie is quite hurt by the reveal of them being EvilAllAlong.
** ''VideoGame/TheLegendOfHeroesTrailsOfColdSteel'': Jusis was absolutely shocked to discover that his older brother Rufus, who had been the one who instilled the values of nobility into him, was secretly the right-hand man of Osborne who sought to abolish the nobility.
* The ''Franchise/MassEffect'' series has plenty of examples, beginning with the second death in the series: SacrificialLion Nihlus is shot in the back of the head by his old colleague Saren.
** Garrus's whole loyalty mission is entirely focused on him finding and dealing with someone who did this to him. After Shepard recruits him, he tells him about a traitor named Sidonis who sold out his squad to the various merc groups on Omega and told them where the squad were hiding, causing the mercs to track them down and kill everyone but Garrus. [[spoiler: You find out later that this wasn't ''quite'' the case, as the mercs actually threatened him at gunpoint for the location of the base, and he feels very guilty for actually giving in to their demands. While Garrus at first still wants to execute him for being a coward, you can convince him to back down.]]
** This also happened to Zaeed Massani, courtesy of [[spoiler: Vido Santiago. He and Vido founded the Blue Suns mercenary group as a business venture over twenty years ago. While mercenary groups aren't exactly known for being morally scrupulous, Zaeed tried to keep the Blue Suns fairly clean. Vido, objecting to this because it cut profits, turned Zaeed's men against him. He paid a group of them to hold him down while he shot Zaeed in the head (Zaeed survived).]]
** Shepard has a HeroicBSOD when [[spoiler: the Council pulls them off the hunt for Saren.]] For a Paragon Shepard, this comes as a real blow.
** Shepard themself can do this in ''VideoGame/MassEffect3'' for various reasons. A particularly bloodthirsty player can personally kill four close friends -- [[spoiler: Mordin, Wrex, Legion, and the Virmire Survivor]] -- in a single playthrough.
* ''VideoGame/MasterDetectiveArchivesRainCode'': Two moments in the game show Halara might be more sensitive to betrayal than any other experience, due to their past experiences. The first is when Halara hears Shinigami refer to them as "Hellara" while in the Mystery Labyrinth, seemingly aware the nickname is intended to demonize them due to their blatant Greed; the reason for this reaction becomes clear in Gumshoe Gab, as the money Halara is saving through their detective work is supposed to be for a charity for cats. The second is during the Gumshoe Gab itself when Halara sounds as though they're on the verge of tears when they thought Yuma had tricked them into revealing they were looking at cat photos in the alley. Of course, Yuma quickly corrects himself in this moment, saying that he was basing it off previous observations of Halara.
* Happens in ''VideoGame/MegaManX7's'' prologue, when Axl and Red Alert were infiltrating the base of a maverick. His second-in-command seemingly finds him, and then while leading him away, he shot the guy in the back. However, in this case, it was a subversion, as the actual second in command had actually been killed earlier by Axl, and the "second in command" who shot his boss was actually [[VoluntaryShapeshifting Axl]].
* In ''VideoGame/MetroidOtherM'', the event that triggered [[spoiler:MB's [[AIIsACrapshoot rampage]]]] aboard the Bottle Ship was [[spoiler:her "mother" Madeline Bergman doing nothing when security showed up and dragged her away to be given the AI equivalent of a lobotomy]].
* In ''VideoGame/MirrorsEdge'', Faith [[https://www.youtube.com/watch?v=IG_vnKeJpKY briefly]] has this reaction when she finds out that [[spoiler: Celeste has joined the other side.]]
* In ''VideoGame/NeoTheWorldEndsWithYou'', [[spoiler:Shoka]], one of the Shinjuku Reapers, gets kicked out at the end of the second week and joins up with the Wicked Twisters(i.e. the party). At the end of that day, it turns out that [[spoiler:Shoka]] passed along information about Rindo's time reversal powers to [[BigBad Shiba]] in order to rejoin the Reaprs, and [[TheHero Rindo]] is outraged at [[spoiler:Shoka]]'s betrayal. However, [[spoiler:Shoka]], overwhelmed by guilt and refusing to see Shibuya be destroyed, refuses to rejoin the Reapers and permanently joins the Wicked Twisters, who are able to forgive [[spoiler:her]].
* ''VideoGame/NeverwinterNights'': Everyone's reaction (possibly including the player) to [[spoiler:Aribeth]]'s FaceHeelTurn.
* ''VideoGame/PrayerOfTheFaithless'':
** When Aeyr becomes a [[spoiler:Revenant, Amalie turns on him because she believes Revenants are mindless monsters, [[BrokenPedestal ruining the trust]] Aeyr had in her and causing him to believe that if the world is going to see him as evil, then he should no longer care how he treats anyone outside of his circle of friends. At this point, he's willing to run roughshod over civilization in order to protect his best friend, Mia, at any cost. After taking over Asala, Mia sends Aeyr to Purgatory to kill Gauron but omits that if he succeeds, he'll die without his Revenant-induced Miasma immunity. When Gauron reveals this to Aeyr, the latter spares Gauron, makes the Fog traversable to normal humans, and sends a letter challenging Mia to confront him in Purgatory.]]
** When Mia's party discovers [[spoiler:Vanessa's Infused experiments in Lavingard, Vanessa orders Amalie to kill the rest of the party. When Amalie fails, Vanessa abandons Amalie and labels her a fugitive along with the rest of them. This causes Amalie to fall into despair since she considered Vanessa to be her savior in her time of need. Although Mia convinces Amalie to fight to save the people of Asala from Vanessa, it's possible for Mia to betray Amalie's hopes in the Love ending, where Mia gives up on saving Asala, causing Amalie to join the rest of the party in attacking Mia.]]
* In ''VideoGame/SaintsRow2'', it was revealed that Julius tried to kill The Boss by destroying the yacht seen in the finale. The Boss had Julius as their boss before he became the Saints' leader.
* [[GambitRoulette Depending on the path you choose throughout the game]], this is the usual response from the heroes whenever you take the villainous path in ''VideoGame/ShadowTheHedgehog''.
* In ''VideoGame/{{Starcraft}}'', there tend to be a lot of instances of people betraying others. In SCII, [[spoiler: Tychus reveals that he was given an order to kill the newly de-infected Kerrigan, regardless of the fact that she's no longer zerg, and as a result, Raynor has to kill him.]]
* ''VideoGame/{{Slammed}}'': This happens twice:
** First, [[spoiler:JJ betrays you by getting you fired from the GWA by having Griss/Giana plant an illegal drug in your bag, and sabotaging a mandatory drug test to motivate the promoters to search your bag.]]
** Second, [[spoiler:in the Ladders and Scaffolds match with you, JJ, Solitary, and Super Horns vs. Paul Prototype and his Lawgivers, just as Solitary is about to grab the belt, Super Horns betrays him by pushing him off the scaffold.]]
%%* [[spoiler:Jerry Ying to Tequila Yuen]] in ''VideoGame/{{Stranglehold}}''.
* A running theme throughout the ''VideoGame/{{Suikoden}}'' series is the main hero having to deal with the betrayal of a close friend or ally -- which he usually has the option of forgiving. (Doing so helps determine [[MultipleEndings what ending the game gets.]])
* The first major blow in the BreakTheHaughty act played on Luke in ''VideoGame/TalesOfTheAbyss'' is [[spoiler:his mentor Van betraying him and leaving him for dead]].
* ''VideoGame/TalesOfDestiny'': Stahn gets pretty upset when [[spoiler: Leon]] betrays the party. So do the others, to lesser extents. But Philia took it worst of all, as shown in the sequel when she talks about [[spoiler: him]]. Later, [[spoiler:Ilene sides with Hugo rather than Stahn and commits suicide. Stahn goes into a full-out HeroicBSOD.]]
* In ''VideoGame/{{Warcraft}} 3'', King Terenas Menethil reacts appropriately with shocked horror when he realizes that his son Arthas, who has just returned from a seemingly successful campaign to eliminate the Scourge, [[SelfMadeOrphan is not here to give his father his regards.]]
-->'''Terenas:''' ''What are you doing, my son?!''\\
'''[[TheUndead Death Knight Arthas]]:''' ''[[PreMortemOneLiner Succeeding you, father.]]''
* ''VideoGame/WildArmsMillionMemories'':
** [[spoiler: Filgaia goes up in a ball of fire after the heroes fail to stop the demons' plans, because Rudy [[TheHero (yes, that Rudy)]] betrays everyone. Your party is understandably upset and confused by this turn of events but cannot seem to do anything about it.]] This is all revealed in the ''opening cutscene'' with the context not being revealed until the very end.
** Related to, and hidden by the above [[spoiler: [[OmnicdalManiac Mother]] is equally confused when Siegfried chooses to fight alongside Rudy to protect Filgaia, instead of destroying the world on her behalf.]]
* Two noteworthy examples from ''VideoGame/XenobladeChronicles1''. Dunban is utterly appalled with [[spoiler:his old war buddy Mumkhar betraying his entire species. Though in this case Mumkhar never really liked Dunban while Dunban always considered him a friend and didn't notice the jealousy Mumkhar harbored for him.]] The second example would be Dunban and the whole gang being horrified to learn that [[spoiler: Dickson, Dunban's second old war buddy and a father figure to Shulk]] was deceiving them the whole time and plans to kill them all.
** The third example is [[spoiler:Egil's belief that Mayneth has betrayed him. Egil is disappointed the remaining members of his species are against his genocidal plans but when the god he knows personally tries to stop them he downright almost cries. His behavior clearly brings great pain to Mayneth too.]] Terrific voice acting really hammers home how personal the betrayal feels. Also a bit of an odd case since the hero character is the one being accused of betrayal.
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* ''ComicBook/Robin1993'': This is Tim Drake's basic reaction to realizing that the BadFuture (caused by [[FallenHero the fall of his hero friends]]) he'd been obsessively trying to find ways to avoid was [[TheChessmaster Batman's]] idea of a [[DangerousSixteenthBirthday test]].

* In ''WesternAnimation/TheVentureBrothers'', Monarch says this to King Gorilla when the latter (initially) refuses to help the Monarch escape prison.

* ''Fanfic/ShadowsOverMeridian'': After learning that Vera [[spoiler: deceived her fellow Sky Hunters for her own selfish ends]], Amelia is utterly dismayed, because for all her differences with Vera, she never believed the latter would be capable of [[spoiler: stabbing her friends in the back like this]]. Her feelings are empathized by Vathek, who's still reeling over the revelation that it was Caleb of all people who played a vital role in making Kage an enemy by countermanding Elyon's orders and refused to come clean about it.

-->'''Eren''': Bertolt... Reiner... ''[bites down his hand furiously to transform]'' DAMN YOU, YOU TRAITORS!!

--> '''Gretchen''': Why should Caesar get to stomp around like a giant while the rest of us try not to get smushed under his big feet? What's so great about Caesar? [[FreudianSlip Brutus is just as cute as Caesar.]] OK, Brutus is just as smart as Caesar. People totally like Brutus just as much as they like Caesar. And when did it become OK for one person to be the boss of everybody? Because that's not what Rome is about! We should totally just ''stab Caesar!''"

-->'''Vibrant''': Crin-Crin? ... why ... would ... you?

-->'''Mal''': Next time you stab me in the back, have the guts to do it to my face.

-->'''Mr. Conklin''': Et-tu, Boynton?

-->'''Terenas''': ''What are you doing, my son?!''\\
'''[[TheUndead Death Knight Arthas]]''': ''[[PreMortemOneLiner Succeeding you, father.]]''

* WesternAnimation/TangledTheSeries: "et tu, Blondie" in episode 7
** A ''very'' dramatic example happens in "The Alchemist Returns". [[spoiler:Varian, a young alchemist who could find the answers to the black spikes that are ravaging Corona, offers to help Rapunzel by finding the Sundrop Flower that saved her mom. To do so, they have to get it from the Royal Vault. Just as they get there, Varian betrays Rapunzel by taking the Sundrop Flower and reveals his true intentions: he doesn't care about the welfare of Corona and plans to let the rocks destroy the kingdom as revenge for them earlier turning their backs on him when his father got encased in crystal]].

* ''WesternAnimation/{{Teenage Mutant Ninja Turtles 2003}}'' has it parodied in "Space Invaders Part 3". When Michelangelo once again gloats he is a Battle Nexus Champion, Raphael, who reminded him [[LetUsNeverSpeakOfThisAgain not to talk about it again]], attempts to smack him, but Leonardo stops him... so that he can smack the turtle himself.
-->'''Michelangelo''': Et tu, Leo?

** In the episode, "The Avatar and the Fire Lord", though the relationship between Avatar Roku and Fire Lord Sozin became deeply strained when Roku made it clear that he would kill Sozin if he launched his planned war, they were still friends, as shown when Sozin showed up to aid Roku when his island suffered a massive volcanic eruption. The two men stood their ground and controlled the volcanoes until the villagers had escaped, at which point [[spoiler: Sozin realized Roku was vulnerable and betrayed him, leaving him to die on the island so he could fulfill his ambitions of world conquest]].