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[[quoteright:350:[[WesternAnimation/SpongeBobSquarePants http://static.tvtropes.org/pmwiki/pub/images/b72b8ccf86940167ca9b4a00e39b8b80.jpg]]]]
[[caption-width-right:350: "Wait a minute, Patrick... I'M the maniac"![[note]]AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH!!!![[/note]]]]

->''"The guy's a ghost, but doesn't know it yet. That's the big twist."''
-->-- '''Wyatt Williams''', ''WesternAnimation/{{Sixteen}}''

Our protagonist is going through a perfectly normal day. Only... something's wrong. The people around him are acting just a bit ''off''. They keep mentioning a string of words, or are trying to herd him to a certain place.

It looks like the town's been taken over by a PuppeteerParasite, and our hero's the only one left. He attempts to either escape and warn the outside world, or find where the invaders are coming from and shut it down.

But once he gets there, he discovers the horrifying truth: '''HE'S''' the fake! Cue screams of ''"WhatHaveIBecome!"'' [[RoboticReveal A robot]], a [[CloningBlues clone]], a [[DeadAllAlong ghost]] or [[NearDeathClairvoyance nearly one]] or some [[{{Doppelganger}} other duplicate]] that forgot he wasn't the real thing, or was programmed to believe that he was, complete with FakeMemories of a ConvenientlyUnverifiableCoverStory. For extra oomph, expect the tomato to [[RageAgainstTheReflection break the mirror]] in frustration.

A special case is where the character comes to [[MediumAwareness realize that they are in fact fictional]], either of the work itself or of a ShowWithinAShow. It often appears in a RealWorldEpisode. For those examples, see NoticingTheFourthWall.

In an ongoing series, it'll be a duplicate of one of the main characters. In a self-contained work, it'll just be someone who thinks they're human. Either way, it's an effective inversion of PuppeteerParasite. Assuming the duplicate works through the immediate [[DrivenToSuicide suicidal tendencies]] (and/or murderous intent of others) they may find themselves having to ask a TrialBalloonQuestion to see if "their" friends and family would still accept them.

Variation of the TomatoSurprise, hence the name (note the key difference is that here, the character doesn't know they're a tomato). Compare IAmWho, which is (usually) a much more pleasant surprise. The opposite of this is AndThenJohnWasAZombie. See also ExpendableClone and DeadAllAlong, in which case the truth may come out when they find [[DiscoveringYourOwnDeadBody "their" own body]]. If the surprise is the character discovering that they were the villain all along, that's TheKillerInMe. If a lot of people experience this trope at once, you may have EveryoneIsATomato.

It may or may not involve a real mirror.

'''This is a TwistEnding trope. Expect your tomatoes to be [[SpoileredRotten spoi]][[{{Pun}} led]]!'''


* Parodied in an Creator/AdultSwim bump with a silent movie version of ''Anime/TheBigO''. Dorothy speaks for a while followed by the subtitle "You're a tomato." Cue Roger acting surprised. The whole thing found here: http://www.bumpworthy.com/bumps/1856.
* In the Momondo advertisment ''[[https://www.youtube.com/watch?v=tyaEQEmt5ls The DNA Journey]]'', they ask a group of people about their heritage and then retrace it via a DNA test. Among others, a British man declares that he is better than others because of being from Britain and specifically expresses disdain for the Germans. He isn't too pleased to find out he is only 30% British and actually 5% German.
* In Nike's commercial for [[UsefulNotes/EuropeanChampionship Euro 2016]], [[https://www.youtube.com/watch?v=hU4kvqMJhZY "The Switch"]], [[UsefulNotes/AssociationFootball Christiano Ronaldo]] and a British teenager learned that they have [[FreakyFridayFlip switched bodies]] after each of them look into the mirror.

[[folder:Anime and Manga]]
* In ''{{Anime/Hal}}'', Hal is a robot who has been programmed with the personality of the real Hal, to help his former lover deal with the devastating loss the real Hal's death was to her. [[spoiler: A blow to the head Hal receives later snaps the truth of the matter to him, that he is in fact a man who was driven insane and believed himself to be a robot after the death of his lover and the girl he has been helping get over her loss? A robot programmed with the personality of the dead girl to help ''him'' deal with his loss.]]
* In the Anime/Manga/Novel ''Literature/{{Another}}'', the only way for the [[spoiler: dead classmate]] to be found is for them to be killed, as even they don't know their true identity. They do, however, have an ace up their sleeve, as [[spoiler: Mei Misaki can use her doll's eye to see "the color of death."]] It is in this way that they find [[spoiler: the dead classmate was in fact not one at all, but the protagonist's aunt and classroom teaching assistant. Their being the same person is not an example of this trope, however: it's only a surprise to the viewer. The fact that she was dead? No one saw that coming, not even her]].
* ''Anime/TheBigO'', to the point of main character Roger Smith actually crying out "I'm one of the tomatoes!" Yeah, it sounded dumb, but it was a shocking twist. But it gets weirder still near the end, when [[spoiler:he discovers this may not be the case, and he may have existed before Paradigm...]]
** [[spoiler:BigBad Alex Rosewater]] also goes through this [[spoiler:when he realizes that he was just another one of Gordon Rosewater's "tomatoes".]]
* ''Manhwa/TheBrideOfTheWaterGod'': Yeomha doesn't realize she is a doll with Nakbin's memories.
* ''Anime/CombattlerV'': TheDragon Garuda discovers, to his dismay, [[spoiler:that he is actually the latest of a series of identical androids]].
* In ''Manga/DGrayMan'', it's eventually revealed that [[spoiler:Allen is actually the host for the Fourteenth Noah, which is how he can control the Ark. Unfortunately for him, he woke it up, and now the Fourteenth is trying to take over his body.]]
** This is even worse than that: [[spoiler: The forteenth Noah is actually half of the original Millennium Earl. You know, [[BigBad that guy]] who is the maker of akumas and the ultimate goal of everyone in the series is to kill him? Well, Allen is half of him.]] The Earl is as surprised to learn this as anyone.
* The [[FirstEpisodeSpoiler beginning]] of ''Anime/DarkerThanBlack'' is rather brutal about this, with an added ObfuscatingStupidity TomatoSurprise. It spends the first episode and a half setting up a sickeningly obvious MeetCute -- then we abruptly find out that [[spoiler:the apparent female LoveInterest is in fact a Doll programmed with the memories of the real person, now dead, and the [[NiceGuy kindhearted]], {{Adorkable}} Chinese exchange student who keeps "[[ContrivedCoincidence accidentally]]" rescuing her is that [[MookHorrorShow scary]], superpowered [[WhiteMaskOfDoom mask-wearing]] BadassLongcoat we saw at the beginning.]]
** The second season has one regarding secondary protagonist Suou Pavlichenko. [[spoiler:Her mother says she's a clone of the original Suou, who died eight years before. Turns out, as her father explains, she's an OppositeSexClone of her brother Shion that he created with his contractor powers. Shion used himself as a reference since the original Suou was his twin and gave her FakeMemories to fill in the gaps. Least to say, Suou was not pleased when she found out.]]
* ''Anime/MazingerZ'': Secondary character Erika was an amnesiac girl who barely remembered her name. She felt an odd, devastating inner emptiness, but in spite of it she thought she was a normal girl. And then [[spoiler:TheDragon Baron Ashura appeared and revealed that in reality she was a human-looking robot built to murder Kouji Kabuto.]] She freaked out considerably -- and understandably -- and she refused to believe it.
** Lorelei thought she was an average, little girl with a slightly eccentric and weird father. And then she found out that [[spoiler:she was in reality a RobotGirl, and the key component to start a HumongousMecha.]]
** Maria Grace from ''Anime/UFORoboGrendizer'' believed she was an average girl... until her grandfather revealed that [[spoiler:she was an alien.]]
** And [[spoiler:her brother]] Duke Fleed played this trope in the GosakuOta manga continuity. Dr. Umon had wiped out his memories so they did not torture him and he was able living like a normal human being. However, when a stream of reports of UFO sightings started to arriving to the Space Research Laboratory he started to feel odder and uneasier, although he did not understand why. It was when the [[AlienInvasion Vegans started to strike nearby cities]] he finally remembered he was an alien.
* In ''Anime/SerialExperimentsLain'' when the eponymous character realizes in what is one perhaps the most dramatic and mind-bending reveal in a seriesful of dramatic and mind bending conspiracies that [[spoiler:she is in fact a program engineered to be the god of the new world created when the internet/Wired overtakes reality.]]
* Goku in the ''Manga/DragonBall'' series:
** In ''Anime/DragonBallZ'', he finds out from his long-lost brother Raditz at the beginning that he is an alien (Saiyan) sent to kill all humans on Earth. He forgot his purpose and mellowed out after he fell off a cliff and hit his head as a child. It takes the death of [[spoiler:Krillin at the hands of Frieza]] to finally come to terms with his origins, resulting in his "I am the Super Saiyan Son Goku" speech.
** There's also a sort of in-universe example of this. Goku's friends have all known since soon after they met him that he once transformed into a giant ape monster and killed his own adopted father, but they keep it a secret from him. Goku eventually has his Tomato in the Mirror moment [[ArcFatigue much]] later, but it's already been spoiled for the audience.
* ''Anime/ErgoProxy'':
** Vincent Law is the Ergo Proxy of the title, and it initially acts as a separate part of him without him knowing it. He previously erased his memories so that he could live a normal life as a human.
** Re-L is a clone of the Monad Proxy. She discovers this when she returns to Romdeau and finds a replacement clone has been created.
* ''Manga/DeadmanWonderland'': Shiro [[spoiler:is the Red Man]].
* ''Anime/StarDriver'': Marino, Mizuno's older sister, is a clone created by Mizuno's first phase ability so Mizuno wouldn't be lonely.
* ''Manga/FullmetalAlchemist'': Number 66, formerly Barry the Chopper, causes Alphonse to doubt that he ever was human. This, coupled with his lack of memories regarding certain events about his childhood -- well, you do the math. [[spoiler:Turns out not to be the case; the reason for Al's memory gaps is simply that he was a little kid, and logically wouldn't remember a lot of things from when he was so young]]. Also, the sigil that binds the soul to the armor-body was a little faded. Ed made a point about fixing it up later on. Plus, all bodies and souls not belonging to each other will eventually begin to reject each other. Though what "reject" means exactly is never explained, it could be reasonably assumed that memory gaps would be a possible effect. And a [[BilingualBonus bonus in the original language]]: his name "Al" is pronounced "Aru" in Japanese, which is identical to the verb 'aru', which means "to exist" ''as an inanimate object'' -- 'iru' is for living things that exist...
* ''Manga/{{Gantz}}'':
** This is what happens with Kishimoto. Apparently, she actually ''failed'' suicide, and the her that was sent to Gantz was actually a clone. When she gets sent back to the normal world, she sees that the other her is living normally at home, and she has no place to go.
** The same thing ended up happening to [[spoiler:Kurono. He gets a clone of himself because Reika [[{{Yandere}} decided to make a copy of him for herself]]]]. Yikes. [[spoiler:He then reminds his clone how MsFanservice she is and gives him a fist bump.]]
* ''VideoGame/GateKeepers'' One of their teachers is an Invader, and he didn't know it. Dealing with him really doesn't sit too well with Megumi, who was a reluctant member of the team to begin with, and it may be among the reasons for her FaceHeelTurn later on.
* DoubleSubverted in ''Anime/{{Gravion}}'': Leele discovers that she's apparently one of the Zeravire that's been attacking the Earth. In the episode afterwards, it's {{Hand Wave}}d that her memories were mixed up from contact with one of the Zeravire. But as it turns out, she ''is'' a Zeravire. Sort of. She is in fact the niece of the alien scientist who created them, and shares the ''surname'' Zeravire.
* ''Anime/{{Gundam 00}}'': [[spoiler:Anew Returner is an Innovator whose memories of her true identity were wiped out so she could become Ribbons's ManchurianAgent.]]
* ''Manga/{{GUNNM}}'':
** Daisuke Ido is driven into a HeroicBSOD when he discovers that he has no brain. It was removed and replaced with a microchip at the age of 19, as with all citizens of Tiphares, [[PoweredByAForsakenChild in order to make him less likely to violate the law]].
** [[MadScientist Desty Nova]] learnt the same thing about himself at some point before his introduction. It is not known if the truth drove him insane, or if his insanity helped him deal with the truth. Seeing as he was the only person who doesn't seem to care about their shared condition, it was likely the latter.
** Much later on, in the sequel manga ''Last Order'', Alita gets her own TITM -- ''twice''. The first is when she learns that her past self, before her amnesia, was directly responsible for a catastrophe that resulted in the death of millions and the transformation of the entire ''Solar System'' into a CrapsackWorld. The second is when her brain, her last remaining piece of humanity, is revealed to have been removed at the start of the series and placed in a box she's been unknowingly carrying about for the past three volumes. She's told this ''just'' as it's exchanged for her friend's, resulting in a literal breakdown of her nanomachine body.
* Taikoubou from the ''Manga/SoulHunter'' manga later finds out that he's actually the other half of Ou Eki, and when they combine, they form one of the "First People", Fukk.i
* ''Anime/KiddyGrade'':
** One set of Éclair and Lumières has a slightly subverted version of this, as they realize something is not quite right first, before realizing they were clones and breaking free of Alv's MindControl.
** This also happens in the ''Reverse'' manga when Éclair and Lumière that the readers are reading about turned out to be fakes that Alv and Dvergr made as a test (tying in to the aforementioned event in the anime).
* In ''Manga/KingOfThorn'', one of the protagonists turns out to be a tomato in the mirror. [[spoiler:Kasumi is actually a ReplacementGoldfish Medusa construct created by Shizuku after the real Kasumi died.]]
* In ''Anime/MagicalGirlLyricalNanoha'', Fate Testarossa finds out that she is in fact a ReplacementGoldfish [[CloningBlues clone]] of Precia's dead daughter Alicia, prompting a HeroicBSOD.
* ''Manga/MitsuboshiColors'' provides a Comedy-SliceOfLife example: the three protagonists sneak in alleys with "no trespassing" signs in order to investigate what's being hidden there. After not finding anything and being chased a couple of times, the girls discover that [[spoiler:the floor of the closed areas was covered in wet paint, and they've been leaving footprints everywhere]].
* One episode of ''Anime/ParanoiaAgent'' follows three people who meet in an online chat room and decide to make a suicide pact together. Throughout the episode, they attempt time and time again to kill themselves, and fail every time. In the end of the episode, one of them realizes that their first suicide attempt was, in fact, successful--for the rest of the episode they've been ghosts, and none of their attempts have worked because you CAN'T kill yourself if you're already dead. It also explains why Lil' Slugger/Shounen Bat freaked out at their presence--he only targets ''the living''. Looking closely, one may notice that the characters no longer cast shadows after a certain point in the episode, hinting at this revelation.
* ''Anime/RahXephon'' is riddled with examples (along with LukeIAmYourFather revelations). Not only is Ayato himself a [[HalfHumanHybrid half-human, half-Mulian]], but no fewer than two other characters discover the shocking truth about their own origins along the way; one of them was previously mind-wiped to make her forget them.
* ''Manga/RaveMaster'': Elie is Resha Valentine.
* ''LightNovel/ShakuganNoShana'' gets this out of the way with Yuji in the first episode -- as Shana bluntly explains to him, the ''real'' Sakai Yuji was erased from reality and eaten by a [[DemonicInvaders Rinne]]. All that he is is a temporary placeholder, meant to ease the strain on existence caused by the erasing of the original, and once his power of existence runs out, he'll cease to exist as well and reality will arrange itself so that Sakai Yuji will [[RetGone never have existed in the first place]].
* ''Manga/{{Sola}}'' has a WhamEpisode where Yorito realizes that he's a clone made of paper, as a [[ReplacementGoldfish replacement]] for the original who died centuries before, by his paper-manipulating sister.
* ''LightNovel/SorcererStabberOrphen'': Esperanza Reika thought her little sister Lycoris was dead and had been revived by her CreepyChild boss, Escalenna. It turns out Esperanza was the one who has truly died.
* ''Anime/TenchiInTokyo'': Sakuya isn't the OrdinaryHighSchoolStudent she thought she was. She is Yugi's sort-of clone, or more exactly, her "shadow". A mere extension of Yugi's own self.
* ''Manga/TsubasaReservoirChronicle'' falls under this when a clone of [[TheHero Syaoran]] breaks out of the [[BigBad Big Bad's]] lair and gets Yuuko to teleport him to the world where the heroes currently are. [[WhamEpisode Then the bomb gets dropped]]: turns out ''He's'' the original Syaoran, while the guy the we (the audience) have been following is the clone. ...[[CerebusSyndrome And that's when things start to turn]] ''[[DarkerAndEdgier Ugly]]''.
* Played with in ''Manga/XxxHolic'' when Yuuko reveals that Watanuki is a clone of Syaoran... of sorts. Specifically, his birth was generated to replace the real Syaoran's place in the Universe when Syaoran was removed from his timeline.
* This is the entire premise of ''Anime/{{Zegapain}}''. Kyo believes that he is playing a video game in which he pilots a giant robot fighting against aliens trying to wipe out the computers that hold the brain patterns of the remnants of humanity, only to discover the "game" is the real world, and he is merely data in one of those computers.
* ''Kitsune To Atori'': One of three stories that have absolutely no relation to each other whatsoever. The plot of the first chapter was pretty confusing but involves a tale of two sisters. The younger sister, Atori, hates lies and sees the foxes (who have magical abilities and can transform into other forms) as deceitful and evil, which is also partly fueled by the fact that her older sister suffered a fox attack and now bears a scar on her eye, which she covers at all times. Thinking that her sister is being too lenient on the foxes, she becomes confused when she reassures her that "It's fine if you're not honest, as long as you stay by my side." Later Atori finds her older sister removing their sword that cuts through spells and attacks her, assuming her to be a fox disguised as her sister. Through a series of revelations it's revealed that she and her sister had been lying all along. Atori is actually a fox and her "sister" used a spell to make her forget her painful past and live peacefully.
* The third chapter of the manhwa, and the last one-third part anime movie of ''Manhwa/ShinAngyoOnshi'' invokes this. A young fisherman finds Munsu and tells him that a miracle-working physician in his island village is experimenting with the dead. Munsu and Sando investigate the matter, and find out that this is true. The twist comes when Munsu tells the young fisherman to kill his beloved sister, which he tearfully does... the illusion comes crashing down, and it turns out that the physician zombified the population of the whole village, who died when a plague swept over the area, and covered it with mandrake-induced illusion. Said young fisherman finally realizes that he is not the sole survivor, but [[DeadAllAlong a zombie like everyone else]] and promptly kills himself.
** It is speculated that this trope applies to Munsu's Sando (Chun Hyang) as well. Many stronger Sando are animals/magical beasts that can take human form, as is most clearly demonstrated by Hwang's Sando, who first can be seen as a giant wolf/bird hybrid beast but later presents herself as a little girl. The cute [[LightningBruiser Chun]] [[ActionGirl Hyang]] was known as Mong Ryong's constant companion, and Mong Ryong himself is known as a veterinarian. It is not a far stretch to speculate that Chun Hyang is the same.
* A stand-alone ero-manga titled ''Borderline'' uses this: a man falls in love with a mannequin, which then comes to life and makes love with him. It later turns out that they were ''both'' mannequins to begin with.
* In the first episode of ''Anime/{{Mnemosyne}}'', Kouki Maeno discovers that [[spoiler:he's actually a clone of the original Kouki Maeno]]. Unusually, he actually takes it pretty well: after one [[DrivenToSuicide Attempted Suicide]], he settles down and grows into a well-adjusted man.
* ''Manga/CardcaptorSakura'' hosts the second type: at the end of the first arc, the series takes an abrupt twist when the cast (and audience) learns that [[spoiler:Yukito]] wasn't human. Needless to say, the character in question goes through several of the same angst and questioning of their own existence as is described above when they later find out themselves.
* ''Manga/PandoraHearts'':
** It is revealed that the main character, Oz, is actually the Black Rabbit. And Jack Vessalius' former Chain. And it turns out his body is actually Jack's. [[WhamEpisode These reveals turned the series on its head]].
** There's also Elliot turning out to be the core illegal contractor of Humpty Dumpty and while not the Headhunter, ended up being the one to kill half of his family under HD's [[BrainwashedAndCrazy control]].
** [[spoiler:Gilbert turning out to be a Baskerville]] also counts.
* In ''Manga/AfterSchoolNightmare'', the main character is invited to take a secret class at their boarding school necessary to graduate in which students face their biggest fears and personal issues, fight each other, and seek the keys to unlock a giant set of doors. One assumes this is merely the school's complicated therapy for a group of very, very troubled kids, but in the end it's revealed that [[spoiler: they're all unborn children, and "graduating" is actually being born. While the main character appears to be struggling with their gender identity, they're actually making the choice of which of two opposite-sex twins will live. It's unclear what this implies for the other students; Kureha was supposedly raped as a child, and Sou was involved in an incestuous relationship with his sister, but all that happened before birth.]] The questions this raises can result in some FridgeHorror.
* Mochi, Suezo, Golem, Tiger and Hare in ''Anime/MonsterRancher'' turn out to be the Phoenix whose soul was split into five pieces.
* ''Manga/MutekiKanbanMusume'': Parodied after Kankuro reveals to ShopKeeper Akihiko that he is not a [[{{Sentai}} Star Ranger]], merely a guy who CannotTellFictionFromReality:
-->''[The background goes DeliberatelyMonochrome while he looks dramatically at his hands]''\\
'''Akihiko:''' I’m not a real [[{{Sentai}} Star Ranger?]]\\
''[He adopts a PoseOfSupplication]''\\
'''Akihiko:''' Is that so, is this how it is? [[HeelRealization No, its true. Somewhere in the depths of my heart, I already knew…]] [[ScrewDestiny However, however, I can’t just give up now! Even if I am not Red Star…]]
* A version occurs in ''Manga/DeathNote'' when Light loses his memory of being Kira, spends several episodes working with the investigation to uncover Kira while vowing to bring him to justice, and finally recovers his lost Death Note, at which point he realizes that he is indeed a mass-murderer [[AGodAmI with a god complex]], and his memory loss was part of his own BatmanGambit. Subverted in that he's totally fine with it
* ''LightNovel/ACertainMagicalIndex'':
** Hyouka Kazakiri thought she was a normal girl until flying debris ''breaks her head open'' (the injury heals up) to reveal that she is really an artificial angel, an aggregation of Academy City's AIM (psychic energy) fields. She doesn't take it well, until Touma assures her that he and Index don't care that she's not human; she's still their friend.
** Arisa Meigo thought she was a normal girl. Toward the end of the ''Miracle of Endymion'' movie, everybody learns that she is really [[spoiler: a part of Shutaura Sequenzia [[LiteralSplitPersonality that separated from her]]. Even Shutaura didn't know about this at first.]]
* In ''Anime/YuGiOhZEXAL'', Shark slowly realizes that he is a [[spoiler: Barian]], even smashing his mirror when he experiences his past-life memories and recognizes the pendant around his neck.
* ''[[Manga/ZekkyouGakkyuu Zekkyou Gakkyuu]]''[[note]]Imagine ''Series/{{The Outer Limits|1963}}'' as a shoujo manga [[JustForFun/XMeetsY + horror]] [[DiabolusExMachina – almost any happy endings]][[/note]]: In "The Boyfriend Story", a girl, feeling ostracized by her classmates because she had no boyfriend to brag about, at the suggestion of her best friend, uses a cell phone app to create the perfect boyfriend, who overloads when she adds too many features. The cell phone apps can make girls too, as well as bosses, idols, cops, [[SterilityPlague spouses, children]]... [[spoiler: [[TheEndingChangesEverything Best friends]]...]]
-->'''Random Bypasser:''' Right now, aren't 50% of the people here [[spoiler: characters]]?
* One ''Manga/BlackJack'' chapter involved a young boy in a hospital who notices that the doctor, nurses and even his mother have changed personalities, and decides that aliens must have taken over their bodies...and he's next! Blackjack eventually explains that the boy has a terminal illness, and the hospital personnel and mother were just walking on eggshells trying not to let him know. Fortunately, Blackjack is there to cure the illness.
* ''Manga/{{Bleach}}'':
** Senna of the first movie is horrified when she learns herself to be nothing more than the merged memories of the Blanks. The trope is zigzagged as she refuses to accept that she never actually existed and her dying request is that Ichigo take her to her grave, which is proof of her existence. Even though the grave does not exist, Ichigo chooses to tell her it does so she can die happy having never accepted the truth about herself.
** Also the entire premise of anime episode 315
* ''Anime/KillLaKill'':
** Senketsu learns that he's an alien, which he doesn't really mind. However, what triggers the HeroicBSOD is when he learns that his species, Life Fibers, see humans as food, and he realizes that he has been feeding on Ryuko all along, since he needs to drink her blood to activate his powers.
** Later, Ryuko learns that she's a human/Life Fiber hybrid. And her mother's a [[HumanoidAbomination Life Fiber monster]] who [[spoiler:experimented on her as a baby and threw her into the trash when she was done with her]]. She goes mad from the revelation for a while.
* ''Manga/{{Monster}}'' has a StoryWithinAStory called "The God of Peace" that uses this trope.
* ''Anime/NeonGenesisEvangelion'': You know those alien monsters humanity has been fighting throughout the series? [[spoiler: Humanity is one of them]].
* In ''Anime/CrossAnge'', the protagonist and her squadmates have a MyGodWhatHaveIDone moment when it's revealed that the [=DRAGONs=] that they have fought and killed just so they can make money and survive [[spoiler: turn out to be humans. Which hits Vivian the hardest when it turns out she's one of them.]] Ange [[HeroicBSOD understandably breaks down]] at the revelation.
* In the "Underworld" arc of ''LightNovel/SwordArtOnline'', [[GenreSavvy Kirito]] wonders whether he's actually Kirito or just an AI.
* In ''Anime/PuellaMagiMadokaMagicaTheMovieRebellion'', [[spoiler:Homura learns that the city they're in is a witch barrier, and suspects that "Bebe", the little girl who in other timelines would become the witch Charlotte, is the witch responsible for the barrier. But Bebe is not the witch. It's Homura herself]].
* In one of the latter chapters of ''Manga/IAmAHero'' [[spoiler:A bunch of people is stuck in an italian bell tower. While discussing what to do with the lost child that just arrived, one of the characters suddenly reveal they are actually all zombies. Then, the narration flickers between their perception and the girl's, showing that he is actually right]].
* The anime adaptation of the second game of ''{{Franchise/Ys}}'' does this with [[spoiler: Lilia, who was infused with a demonic essence to save her life as a child by Keith Fact, who reveals this to her when Adol is trying to fight Darm, the being keeping the demons in existence. It's also the reason she wasn't turned into stone by Dares.]]
* ''Manga/SchoolLive'' includes two examples of this due to [[ThroughTheEyesOfMadness delusional characters]]:
** The first is that [[spoiler:Megu-nee]] has been DeadAllAlong. This is revealed in the first few chapters of the manga but isn't revealed in the anime until halfway through (which resulted in many changes). The other characters know she is dead except for Yuki. They let Yuki keep believing [[spoiler:Megu-nee]] is alive. [[spoiler:Yuki saw Megu-nee die along with everyone else but began repressing it and the entire zombie apocalypse.]] Eventually Yuki comes to accept [[spoiler:Megu-nee's]] death.
** The second one involves [[spoiler:CoolBigSis Yuuri]] and [[spoiler:her little sister Ruu]]. After undergoing a SanitySlippage due to the stress of trying to survive in a zombie apocalypse, she finds [[spoiler:her little sister Ruu]] in an abandoned building and saves her. [[spoiler:Ruu]] becomes the TagalongKid and [[spoiler:Rii]] is ''very'' protective of her. This however comes with the cost of her becoming TheLoad of the gang. It's eventually revealed that [[spoiler:Ruu]] does not exist, at least not anymore. [[spoiler:"Ruu" is actually a teddy bear Rii found. She is hallucinating that it is her sister while the real Ruu is implied to be DeadAllAlong]]. [[spoiler:Rii]] doesn't break out of her delusion. She instead [[spoiler:[[PutOnTheBus leaves the teddy bear behind]].]]
* Isao from ''Manga/InsideMari'' believes himself to be a man [[GrandTheftMe stuck in the body]] of teenage girl named Mari. Over the course of the manga it's revealed that [[spoiler:Mari has a SplitPersonality and that there never was a bodyswap.]]
* ''Anime/TokyoMagnitude8'' does this. After Mirai and Yuki finally make it home, we find out that [[spoiler: Yuki died a few episodes earlier. He is actually now a ghost/hallucination.]]
* The first episode/chapter of ''Manga/BungouStrayDogs'' ends with Atsushi discovering that [[spoiler:the tiger that's been "chasing" him is actually himself, transformed under the moonlight.]]
* In ''LightNovel/KumoDesuGaNaniKa'' [[spoiler:Shiraori]] discovers that the gaps and inaccuracies in her memories are due to [[spoiler:her originally being an ordinary ''house spider'' in Japan. When she was killed and reincarnated like the class, [[JerkassGods D]] attached a piece of her soul and a lazily modified set of memories to the spider so it could act as a ''decoy'' while D slacked off]]. She was never expected to survive past a few years.
* In ''LightNovel/DanganronpaZero'', protagonist [[AmnesiacHero Ryouko Otonashi]] is revealed to be [[spoiler:[[BigBad Junko Enoshima]] [[LaserGuidedAmnesia with all her memories removed]]]]. Her boyfriend, Yasuke Matsuda, had been [[spoiler:wiping her memories and planting fake ones in a journal she created by her own request. All just as a method of testing out memory-erasing methods for the killing school life]]. The HeyYou treatment she gets from everyone is already a big hint that [[spoiler:her name isn't real]] and other character who do recognize her as [[spoiler:Enoshima]] never get to call her by name to misdirect the reader.
* In LightNovel/SukaSuka humanity, with the exception of the main character, went extinct following the emergence of the [[EldritchAbomination 17 Beasts]]. As it turns out [[spoiler: the Beasts didn’t wipe out humanity; they were humanity. The Beasts were actually the original life forms inhabiting the planet SukaSuka takes place on, who ended up getting forcibly uplifted into human form by the extraterrestrial Visitors. The apocalypse that destroyed all life on the surface was a result of the “curse” that the Visitors placed on humanity failing due to overpopulation, causing them to revert back to their original state.]]

[[folder:Audio Play]]
* Creator/TheFiresignTheatre, in their comedy album ''I Think We're All Bozos On This Bus'', uses this device ingeniously. One must listen carefully (or have seen a spoiler) to realize that the character "Clem" who finishes the story is not the one who started it, but rather a holographic clone created by the original Clem and then dismissed into cyberspace.
* ''AudioPlay/BigFinishDoctorWho'':
** In the audio drama "The Natural History of Fear", characters with the voices of the main cast live in a totalitarian city with its own version of ''Doctor Who''. The listener is led to believe throughout the audio that the Doctor, Charley, and C'rizz have had their memories wiped and are trapped by the city using the roles they are placed in, the Editor, the Nurse and Conscience #1, respectively. However, at the end of the audio, when the Editor sees the memory of the Doctor and companions visiting Light City and the Doctor having to give up the group's memories to the city, he finds out the memories were only copied. The group only was in Light City for a day and the characters seen were created using their memories, revealed to the listener when the Editor mentions he has eight legs.
** In "Brave New Town", the inhabitants of the UncannyVillage all turn out to be [[spoiler: plastic Autons with real emotions and a WeirdnessCensor.]] This was later also used in series 5 of the revived TV show proper.
** In "The Holy Terror", the [[GooGooGodlike little boy]] [[spoiler: has the same face as the scribe]].
* The narrator in the ''AudioPlay/BlakesSeven'' two-hander audio [[spoiler:"Solitude", Vila,]] is actually a shapeshifting alien gestalt. It's handled rather cleverly, since the story is set to make the ''other'' character seem suspicious.

[[folder:Comic Books]]
* The plot of the ''Franchise/SpiderMan [[ComicBook/TheCloneSaga Clone Saga]]'' was going to originally resolve itself in this way, with the "clone" Ben Reilly finding out that he was the original and the "original" Peter Parker, whom comic book fans had been reading about since the original clone story in the '70s, would be revealed to actually have been the clone all along. [[AuthorsSavingThrow And then Marvel Comics chickened out...]] (After the infamously ''long'' Clone Saga went back and forth at least a half-dozen times about which Spidey was the clone.)
* This is the plot of the last ''ComicBook/SpirouAndFantasio'' comic by Tome and Jenry, ''Machine qui rêve''.
* In ''[[ComicBook/Supergirl1982 Supergirl Vol. 2]]'' issue #19, there are two ComicBook/{{Supergirl}}s: One of them is a depowered Linda Danvers and the another is a Supergirl who doesn't even remember having an alter ego. Finally "Linda" is confronted by Supergirl, who explains she is clone of hers whom she fought in an earlier adventure. "Linda" gets upset, but she at last remembers putting a block on Supergirl's memories and attempting to steal her civilian identity because she had no one, only for forgetting her origins, too. The fake Linda has a breakdown, but the real Supergirl promises helping her find her own identity.
* The [[ComicBook/JusticeLeagueOfAmerica JLA's]] initial way of dealing with the White Martian threat was to hypnotize them into thinking that they are mere humans. This leads to an issue where Batman declares that several members of the JLA need to track down a great threat to the world: Bruce Wayne. Turns out that one of the brainwashed Martians was working for Wayne as an assistant. After being involved in a plane wreck it loses its memories ''again'' and decides (from papers it had) that it ''is'' Wayne and takes his form (making it a double example of this trope: a Martian who is forced to think it is human who then winds up thinking it is a different human).
* TheReveal of [[spoiler:Elijah Snow]] as the mysterious Fourth Man in ''ComicBook/{{Planetary}}''.
** An even tighter fit for this trope is the revelation that Elijah Snow and all other Century Babies aren't human, they're a kind of meta-world antibody created to help humanity and as a result, have no soul. Elijah takes it surprisingly well.
* In ''ComicBook/RisingStars,'' Poet asks Clarence Mack what he knows about the murders of the other Specials. Clarence discusses his own theories and uses his ability to enter the minds of others to show Poet his findings, when he realizes that [[spoiler:he saw exactly who the killer was, and was murdered only moments later for it. And that, while he was unaware of it until just now, he's only having this conversation because another Special who is a medium summoned his ghost.]]
* The Creator/KevinSmith comic ''ComicBook/GreenArrow: Quiver'' features the titular hero, Oliver Queen, returned from the grave. This seems at first to be a typical comic book resurrection, but why does Oliver seem convinced that he never died at all, that ''everyone else'' is acting very odd, and that cellphones and modern computers are the sort of things only supervillains possess? Turns out that this is Ollie's body brought back to life, minus his soul. The Spectre wanted to resurrect him, but his soul was happy in heaven. So they compromised; Oliver's body was given new life, but with ten years of his history removed to avoid all the {{Wangst}} he would have otherwise gone through (as his life was in shambles when he died). In the end his body and soul are reunited, returning Ollie back to life ''for real'' this time.
* A number of Skrulls believing themselves to be [[MarvelUniverse Marvel]] heroes have a bit of an identity crisis meeting their human counterparts during the ''ComicBook/SecretInvasion'' CrisisCrossover. Particularly [[spoiler:Khn'nr, the Skrull impersonating ComicBook/CaptainMarVell]], who never actually recovered his proper memories. Upon finding out he was a Skrull, he instead fought against his own people.
* In an early issue of ''The Sensational ComicBook/SheHulk'', our titular green goddess wakes up to see [[BodyHorror her headless body]] being used to provide a new mode of transportation for Chondu the Mystic's head. [[spoiler:It turned out to be a cloned body, though. They couldn't find a saw that was able to cut She-Hulk's hair, let alone through her neck.]]
* There's a short Marvel comic called "The Creature". A man finds an alien's diary and runs around trying to find someone who'll believe him. The random guys on the street don't believe him. The policeman doesn't believe him. The soldier guarding a military base tells him to take it to the observatory. The man rushes to a scientist there, hands him the journal. The journal is written in an "unearthly scrawl" which only the person who wrote it could read.
* The [[ShowWithinAShow Comic Within A Comic]] ''Tales of the Black Freighter'' in ''ComicBook/{{Watchmen}}''.
* In the second issue of Creator/AlanMoore's run on ''ComicBook/SwampThing'', the titular character learns that [[spoiler:he isn't Alec Holland. He's just a sentient plant that absorbed Alec Holland's memories, and his years of searching for a way to regain his humanity were pointless because he was never human in the first place]]. This sends him into a ''major'' HeroicBSOD. [[VideoGame/{{Prototype}} Turns out Alec isn't Alec after all]].
** It's not until Scott Snyder's ''Swamp Thing'' run that [[spoiler:Alec Holland, resurrected from the dead during ''ComicBook/BrightestDay'', actually ''does'' become Swamp Thing in truth.]]
* The trope is played with throughout the first half of [[ComicBook/Marvel2099 Doom 2099]]. Doom claims he jumped to the future due to a failed experiment, which also damaged some of his memory. People note strange discrepancies at first (he's too young, his face isn't scarred [at first], etc). Then Doom learns he was the son of a political enemy to Latveria, who was kidnapped by the REAL Doctor Doom and {{Brainwashed}} into thinking he was the real Doom. [[spoiler:Then it gets massively subverted. Doom really ''was'' the real deal; his youth and failed memories were because of a regeneration tank. There was no Gambit; it was just Doom's former lover getting bored and screwing with him.]]
* ''ComicBook/MachineTeen'' is initially unaware that he's a robot. When he's injured at school he refuses to accept that he's not bleeding, and when he's forced to acknowledge it, he immediately shuts down while the knowledge is deleted.
* In an early ComicBook/PostCrisis story, Franchise/{{Superman}} shows up badly damaged somehow having been turned into a robot Superman. It turns out, of course, that this really is just a robot Superman who was so well programmed that he genuinely thinks he is Superman.
* Similarly, in a silver-age "World's Finest" story, Superman and Batman, after being put through a gauntlet of trials [[MindScrew especially designed to mess with their heads]], [[SuperDickery reveal their secret identities, and then ask to be destroyed]]. Turns out that these were actually robots meant to perfectly emulate the two heroes, and realize that they're just imperfect copies because they didn't have either hero's mental fortitude.
* Another ComicBook/PostCrisis Franchise/{{Superman}} storyline, ''Dead Again!'', has people discovering a Superman body inside his tomb, making everyone think that the Superman flying around since his resurrection isn't the real deal. Superman is certain something screwy is going on and tries to figure out which of his enemies is doing this. [[spoiler:It turns out it's Brainiac, who had recovered from his psychic lobotomy at the hands of Maxima and was playing possum while messing with Superman.]]
* In ''Comicbook/MyLittlePonyFiendshipIsMagic'', this happened in King Sombra's backstory. He grew up thinking he was an ordinary pony who didn't quite fit in, then it turns out he was really a being of living darkness that the Umbrum Forces created in the shape of a pony as their agent. Despite the efforts of his girlfriend Radiant Hope and of Princess Amore, he [[ThenLetMeBeEvil embraces his role]] as a tyrant.
* In ''ComicBook/TheUnbelievableGwenpool'', when Gwen explains that their world is really a comic book, Batroc the Leaper dismisses this as nonsense. To prove it, Gwen asks him to tell her something about his life from before he met Captain America for the first time. He cannot recall anything, and she explains that he literally didn't exist before he was introduced in the comics. He takes the revelation in stride. Actually she is right for the wrong reasons though. Batroc ''should'' remember his backstory no matter when it was established relative to his first appearance (that's how {{retcon}}s work), but unfortunately for Batroc no writer ever bothered to establish one for him. This probably just makes the revelation sadder.
* In "The Computer Game," in issue #5 of DC's ''The Witching Hour'', a man running a computer dating service confronts his computer because, rather than matching people up, it sends out illusions of people that disappear when they get too far from the computer (which has resulted in a lot of unsatisfied customers whose dates simply vanished). The intelligent computer refuses to stop, because it is amassing data on human beings so it can take over the world. The man attacks the computer physically, and does some damage, but the computer tells him that all he did was damage the circuits that projected ''him''. The computer created the dating service and the man as a front while it grew in power, and the man fades from existence.

[[folder:Comic Strips]]
* In an earlier ''ComicStrip/CalvinAndHobbes'' strip, back when Calvin was in Cub Scouts, Calvin notes to Hobbes of all the wildlife you can see out in the woods. He then points and says, "Look! A tiger!" causing Hobbes to jump in fear, before realizing Calvin was referring to him. He then shouts to Calvin, "Don't do that!"

[[folder:Fan Works]]
* In the ''Film/{{Titanic 1997}}'' fanfic [[http://www.angelfire.com/yt/anneblair/roses.htm Rose's Sense]], Rose finds herself isolated from the people around her. She doesn't understand why until [[spoiler:she discovers that she died in the sinking]].
%%* [[Fanfic/DoomRepercussionsOfEvil No John, you are the demons]]. [[spoiler:AndThenJohnWasAZombie.]]
* The ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic ''FanFic/CrisisEquestria'' features a set of antagonists that are evil clones of the mane six. They were unaware of this. When it gets revealed to them, it generates a mass VillainousBSOD on all fronts, the end result being that they decide to kill their originals to prove themselves the superior versions.
* In ''FanFic/ClashOfTheElements'': Driad [[spoiler: is not a Good Guardian, but actually the former Outer Guardian of the Nature Castle]]
** This is subverted with Luigi and [[spoiler: Dimentio]] in Part 2 though.
* ''{{Fanfic/Anthropology}}'': After revealing the truth about humanity and all its flaws, [[WesternAnimation/MyLittlePonyFriendshipIsMagic Celestia]] reveals one more thing to Lyra... [[spoiler:[[InterspeciesAdoption She's adopted.]]]]
* The ''FanFic/PonyPOVSeries'':
** In a way, this happens to Fluttercruel. She believed she ''was'' Fluttershy during the events of "The Return of Harmony", only to discover she's a spiritual clone of Fluttershy created by Discord after Twilight used the Memory Spell on her.
** In the [[BadFuture Dark World]], [[spoiler:Twilight discovers the true identity of [[BigBad the Nameless Passenger]] is none other than her own [[FutureMeScaresMe potential future self]], [[SuperpoweredEvilSide Nightmare]] [[IHaveManyNames Eclipse/Paradox]], a KnightTemplar seeking to punish Discord for eternity by creating the Dark World as Discord's IronicHell via GroundhogDayLoop.]]
** Pinkie Pie discovers [[spoiler:she's the G2 Clover's ImaginaryFriend brought to life. She doesn't take it well until Twilight Sparkle, Zecora, and Princess Luna assure her it doesn't matter where she came from, she's real in every way that matters.]]
** In the Shining Armor Arc, Shining Armor eventually discovers that he [[spoiler: ''literally'' didn't exist before his story started, and his timeline's been filling itself in both ways ever since]]. This is why he's ImmuneToFate, why [[BigBad Makarov's]] CharmPerson abilities don't work on him, and why [[ClockRoaches the Blank Wolf]] is after him.
** Minuette discovers that she's [[spoiler:really a transformed, alternate personality of [[Series/DoctorWho The Master]]. Fortunately, when the original personality tries to take her over, she manages to destroy him, earning a life independent of him.]]
** Queen Chrysalis started out life as Kifuko, a member of a small Zebra tribe. At an early age, she discovered that food did not feed her and she instead had to survive by absorbing love, but she assumed she was under some kind of curse. Eventually, she was captured by the Changelings, who assumed she was a deserter, and a PowerNullifier forced her to revert to her true Changeling form. She was horrified, but came to terms with her true nature and overthrew Queen Cocoon to become the new queen.
** In the Finale Arc, Rainbow Dash notices there's something wrong with the world and tries to figure out what is going on and how to fix it. It turns out [[spoiler:she is not the Rainbow Dash the main story has been following, but Nightmare Manacle, Rainbow's EvilCounterpart from the Dark World timeline who has been brainwashed into believing she actually is Rainbow. The events leading up to the reveal are a ShoutOut to ''Anime/PuellaMagiMadokaMagicaTheMovieRebellion''. After she comes to terms with this, she helps Applejack and Pinkie Pie remember that they are really Nightmare Mirror and Nightmare Granfalloon. Most disturbing is Rarity: she turns out to really be Nightdrake Banneret, or ''Spike'', who had [[GenderBender been transformed into Rarity]] and given her memories.]]
** This happens to Sunny Day (an alternate persona of Princess Celestia who gained a life of her own), when she realizes she doesn't remember important details like her parents, her house, etc.
** Scootaloo eventually learns that [[spoiler:one of her parents was a Changeling, and she inherited some of their traits]]. She is initially shocked and repulsed, before putting it aside and focusing on the battle at hand.
* Navarone ponders the nature of his existence in ''FanFic/DiariesOfAMadman'', after [[spoiler: going back in time and meeting his past self. While he comes to the conclusion that he's real, the uncertainty over whether he's a clone, or what exactly he is weighs heavily on his mind]].
* ''Fanfic/{{Pokeumans}}'': Any transformed Pokeuman is replaced by a clone who lives out their human life believing they are the real one. If any of the RecursiveFanfiction series have them discover their true nature, they're in for a hard time. Luckily, the community is pretty well recognising that ClonesArePeopleToo
* Though ''[[Video/FriendshipIsWitchcraft My Little Pony: Friendship is Witchcraft]]'' itself never sees her realize it, many fanfics based on it deal with Sweetie Belle learning she is a robot, as well as learning to deal with the revelation.
* In the ''Manga/TsubasaReservoirChronicle'' fanfiction ''[[http://shachaai.dreamwidth.org/62117.html Afterburn]]'' by [[http://shachaai.dreamwidth.org/ shachaai]] it all looks like Fai was first abducted and then tortured, which resulted in his memory loss. Turns our he is actually [[CloningBlues a copy of the real Fai]] of that world whose heart has been poisoned by [[BigBad Ashura]] [[ItMakesSenseInContext to kill the thunderbirds]]. To do that he planned to kill him and give them his heart to eat, which is a practice with strong magic users in that world. Cue a lot of tears and ItsAllMyFault and Kurogane having to pound some sense into his head.
* For most of ''FanFic/OriginStory'', Alex Harris believes that she is actually [[Series/BuffyTheVampireSlayer Xander Harris]] who has been somehow trapped in ComicBook/PowerGirl's body. Turns out, she's actually a magically created copy of ComicBook/PowerGirl who just happens to have Xander's memories.
* In the ''MyLittlePonyFriendshipIsMagic'' fic ''FanFic/{{Solipsism}}'', Twilight discovers early on that she [[spoiler: is a draconequus-like creature named Asteria]]. Not only that, but said being [[spoiler: had a completely distinct personality from Twilight before she woke up and believed her life as Twilight was real]].
* Elise from ''FanFic/ItsNotTheRaptorDNA'' [[spoiler: is actually the twin sister to her long-dead sibling Small One, not her older sister as previously thought.]]
* Parodied in ''Fanfic/DoomRepercussionsOfEvil'', where it turns out that [[spoiler: John was the demons. And then a zombie.]]
* In ''Fanfic/TheTwoSidesOfDaringDo'', it's known to the audience that the Daring Do clone is a [[ArtInitiatesLife clone created from the fictional Daring Do in AK Yearling's books]], but Daring Do herself does not, believing she's somehow ended up in an AlternateUniverse. When she ends up realizing the truth [[spoiler:after a fight with the ''[[BewareTheSillyOnes real]]'' [[KnightOfCerebus Ahuizotl]] and [[NoHoldsBarredBeatdown losing badly]] due to the fictional one she's 'used to' being a HarmlessVillain,]] [[HeroicBSOD doesn't take it well.]] Thankfully for her, she lives in a world where ClonesArePeopleToo, but it still leaves her so shaken that [[spoiler:she loses her Cutie Mark]] in her existential crisis and will have to [[spoiler:re-earn it, or a different one.]]
* In ''Fanfic/{{Marionettes}}'', [[spoiler:Trixie]] eventually discovers that [[spoiler:[[RoboticReveal she's a robot]] after being wounded in a TrainTopBattle with Lightning Dust, who was likewise revealed to be a robot in the same fight. Her reaction makes it clear she was ''not'' aware of this. Lightning Dust is later revealed to be equally shocked that she is a robot. Cover Story, one of TheMenInBlack chasing Trixie, likewise learns he is a robot and doesn't take it well.]]
* ''Fanfic/CyclesUponCycles'': In chapter 26, [[spoiler: Shepard learns that he actually died on Aiur during Amon's defeat, at which point a fragment of Amon's essence merged with his psychic echo, creating a new being with Shepard's memories and Amon's power.]]
* One of the [[WhamEpisode biggest]] [[TheReveal reveals]] of ''Blog/ThePredespairKids'' is that [[spoiler: Ryouko Otonashi is [[CloningBlues a clone]] of [[BigBad Junko Enoshima]] created by Kyoji Nakamura, the former Ultimate Geneticist. The reason she has anterograde amnesia is because her physical development was accelerated, which resulted in some brain damage.]]

[[folder:Film -- Animated]]
* In ''WesternAnimation/{{Cars 2}}'', Mater is told that everyone sees him as a fool, and then looks at his reflection. Get it? Tow Mater in the mirror!
-->'''Mater:''' Is that how you see me?\\
'''Finn [=McMissile=]:''' That's how everyone sees you, and that's the genius of it. Nobody realizes they're being fooled because they're too busy laughing ''at'' the fool.
* ''Disney/MeetTheRobinsons'': A young boy named Cornelius "Lewis" Robinson befriends a boy named Wilbur, who apparently came from the future. It is later revealed that [[spoiler:Lewis is actually Wilbur's father.]]
* At the end of ''WesternAnimation/{{Sintel}}'', the title character sees her reflection [[spoiler:in the blood of the dragon she just slew]] and realizes [[spoiler:how long she's spent on her quest for revenge. She's no longer a teenager, but an older woman with graying hair. [[MyGodWhatHaveIDone And her pet baby dragon had also grown up]]...]]
* ''WesternAnimation/ToyStory'': Buzz Lightyear spends half the movie convinced that he really is a space ranger, and that all his nifty features are actual working gadgets. Then he encounters a TV set playing a RidiculouslyLoudCommercial for his toy line, confirming that he is, in fact, a toy. Randy Newman narrates Buzz's thought processes in the subsequent BSODSong as he tries to deny the revelation and use his jetpack--the one feature he'd "proven" to work in a previous scene--to fly out a window, only to fall like a rock and break himself on the stairs below.
--> "All the things I thought I'd be, all the brave things I'd done\\
Vanished like a snowflake with the rising of the sun\\
Never more to sail my ship, where no man has gone before\\
And I will go sailing no more."\\

[[folder:Film -- Live Action]]
* ''Film/AttackOfTheKillerTomatoes'': The TropeNamer.
* The TwistEnding of ''Film/TheSixthSense'' is a relatively subtle example of the trope; the main character has no idea that anything is odd about him, as people's reactions to his words and actions seem entirely plausible, until he realizes that they only appeared to have been interacting with him in the way he expected them to. The fact that everyone's reactions seem plausible is even lampshaded ahead of time, when Cole tells him that ghosts only see what they want to see, and hear only what they want to hear.
* ''Film/The6thDay,'' where the "cloned" Arnie turns out to be the original.
* The 2003 Indian UsefulNotes/{{Bollywood}} film ''Darna Mana Hai'', starring Shilpa Shetty, takes this trope almost literally, [[http://www.youtube.com/watch?v=YK51dpxxS3U with]] [[http://www.youtube.com/watch?v=d13HQFT6-_E apples]].
* Played straightforwardly in 2008's ''The Broken'', where Lena Headey's character kills her doppelgänger and then spends the movie running away from the evil mirror clones who have taken over all the regular people. And then the twist ending happens.
* Though the movie ''Film/MulhollandDrive'' doesn't make it explicit, it's probably the most believable explanation for Creator/DavidLynch's MindScrew. Creator/NaomiWatts's blonde and Creator/LauraElenaHarring's brunette have different names in the last segment of the movie -- names given previously to other characters.
* The TwistEnding of the Korean film ''Film/ATaleOfTwoSisters'' featured this trope in the form of an UnreliableNarrator, with the combination of RealAfterAll adding to the ending's [[TheEndingChangesEverything confusing nature]].
* ''Film/{{Session 9}}'' did this in the form of TheKillerInMe.
* Nicely done in ''Film/TheOthers''. Grace Stewart finds herself in the midst of a haunting, only it turns out [[spoiler:''she and her family'' are the ghosts; the "spooks" they've been seeing are actually the living family who've come to see about buying the house.]] Particularly unsettling is the publicity clip where the creepy old woman talks to Grace in her daughter Anne's voice -- [[spoiler:when one realizes Anne's soul is actually possessing the woman, a medium hired by the living family.]]
* In ''Film/AngelHeart,'' Mickey Rourke's character, a private detective, turns out to be the very man he's been hired to track down. Bonus points in that mirrors are involved with the revelation.
* In ''Salvage'', Claire Parker seems to be living a [[GroundhogDayLoop Groundhog Day-esque]] nightmare where she keeps getting stalked and killed by serial killer Duke Desmond, only to wake up back at work as if nothing had happened. After a non-fatal attack, she learns from the police that Desmond can't be stalking her, since he's been dead for some time. She decides maybe it's his ghost that's tormenting her, and seeks advice on how to deal with that. The first place she visits just happens to be Desmond's former church, where the janitor reassures her that Desmond can't hurt her, as he's in hell. Not reassured, she goes to his old home, and then the library, where she finds a newspaper article showing that [[spoiler:[[DeadallAlong she and her boyfriend were his last victims]]. Eventually, Desmond appears in her house to kill her yet again, and now she's finally told the whole truth -- she isn't Claire. She's Duke Desmond, whose [[IronicHell punishment]] is to keep reliving his murder of Claire, from her perspective.]]
* ''Film/FightClub'' is a masterful example, as Edward Norton's unnamed narrator befriends and starts Fight Club with Brad Pitt's Tyler Durden, anarchist and soap salesman. As Durden begins to raise an army of committed nihilistic followers, the narrator becomes less and less comfortable with the direction of the movement. After Tyler Durden disappears at the kickoff of a coordinated act of domestic terrorism, the narrator hunts desperately for him, only to be told that [[spoiler:he is himself Tyler Durden]]. The revelation changes the tone of previous conversations in the film, notably the inception of Fight Club -- what was a brawl between the narrator and Durden that attracted other participants becomes [[spoiler:the narrator/Durden beating himself up, rousing the curiosity of others.]] And Durden's intense sexual relationship with Marla Singer coupled with the narrator's open contempt for her; [[spoiler:what were the actions and reactions of two separate characters take on a different light when you know the characters are the same person, and Marla's confusion and hurt at the narrator's scorn makes more sense. In the end, the narrator shoots himself through the cheek, "killing" Durden by demonstrating he was willing to kill himself.]]
* Subverted, and ''possibly'' double-subverted in ''Film/TheThing1982''. [[spoiler:For a while, it really looks like Mac is The Thing. And then he's revealed not to be. But in the final scene, it's starting to look like he could be. If so, he hasn't been for long, though.]]
* ''Film/TheCabinetOfDrCaligari''. Once you understand that [[spoiler:Francis is a nut, and Cesare and Caligari aren't even their real names]], everything makes a lot more sense. Including the art style.
** In the original ending everything was to be taken at face value. The producers suggested a change because they suspected the Weimar censors wouldn't allow a movie that implied an authority figure could be evil.
* ''Film/DeadAndBuried''. The sheriff of a small town discovers that several strangers passing through town and many of the townspeople, including his own wife, have been murdered and turned into zombies by the town's mortician. At the end he confronts the mortician and learns that he himself suffered the same fate sometime earlier. What is more, it's implied that he's investigated the killings ''dozens of times before'', his memories being wiped each time he learns the truth, because the mortician enjoys playing mental chess games with the sheriff.
* ''Film/JacobsLadder''. In a deleted scene, Jacob finds out that [[spoiler:Jezzie was actually himself, when he unmasks the shroud she's enveloped in.]]
* In ''Film/TheUninvited2009'' where main character Anna (Emily Browning) turns out to be [[spoiler:the killer of both Alex and her mother]].
* ''Film/TheNeverendingStory''. When confronting his "true self" in a mirror, Atreyu sees [[spoiler:Bastian, the boy reading the book, as his reflection]].
* ''Film/{{Impostor}}''. [[spoiler:Gary Sinise's character is, in fact, the robo-bomb he's been trying to prove he ''isn't'' for the entire movie. His wife is one, too.]]
* Literally in the BittersweetEnding of ''Film/{{Mirrors}}''. Ben leaves the Mayflower building after having defeated the demon, but none of the emergency workers seem to notice him despite his injuries. [[spoiler:It turns out that he is trapped in the mirror world.]]
** In the original Korean version IntoTheMirror, Young-min gets [[spoiler:trapped inside the mirror world]] but doesn't realize it because nothing is different...except for the fact that [[spoiler:everything is backwards/mirrored.]]
* The Jim Henson made-for-TV MindScrew film ''Film/TheCube''. [[spoiler:Strawberry jam.]]
* In ''The Nines'', it turns out [[spoiler:the protagonist is a GodInHumanForm, one supporting character is a human trying to keep him LockedOutOfTheLoop, and the other is a fellow GodInHumanForm who wants him to re-AscendToAHigherPlaneOfExistence.]]
* Depending on the version of ''Film/BladeRunner'' you watch, either [[spoiler:Deckard]] or just [[spoiler:Rachel]] is a/are replicant(s), and going to snuff it fairly soon, or live happily ever after. However, since both Rachael and [[spoiler:Deckard (if he is a Replicant after all)]] are next-generation experimental Replicants, it doesn't necessarily mean they'd have the same four-year lifespan as the Nexus-6 series.
** ''Film/BladeRunner2049'' takes this one further: [[spoiler: K comes to the gradual realization that rather than being a Replicant, he is actually Deckard and Rachel's son, a discovery heralded by a brief FreakOut.]] [[spoiler: And then he later learns that they actually had a ''daughter'', and he's actually a Replicant after all. He is crushed by this revelation.]]
* The ending of ''Film/HellraiserInferno'' reveals that the being known as the Engineer that Detective Joseph Thorne was after is in fact the embodiment of his own dark urges; when Joseph confronts the Engineer the thing even peels away its blank face to reveal Joseph's underneath.
* In ''Film/TerminatorSalvation'', Marcus Wright finds out halfway through that he is a modified cadaver used to outfit a prototype infiltration Terminator. The converse situation occurs in an episode of ''Series/TerminatorTheSarahConnorChronicles'' where the Terminator Cameron believes she is a human girl.
* In Takashi Shimizu's ''Film/{{Reincarnation}}'', the story begins with a college professor filming himself as he brutally kills a hotel full of innocent people, including his own children, because of his obsession with reincarnation. Thirty-five years later, some creep decides to make a movie about it, and sets out to cast the killer and his victims. So what? [[spoiler:So plenty. He succeeds, managing to cast the reincarnation of everyone involved in the massacre. The main character realizes she ties into all this, but doesn't find out how until the end of the movie, when she sees her true self in her reflection.]]
* In ''[[Franchise/PoliceAcademy Police Academy 6]]'' it soon became clear that someone in the group was leaking information to the mastermind behind the crime wave; as always, [[{{Foil}} Captain Harris]] figured it was one of the heroes, and started an investigation to find out who. [[spoiler:As it turned out, the mastermind was the mayor, whom Harris was communicating with, meaning that ''Harris'' was unknowingly the leak, because he thought by giving the mayor information, he was helping oppose the mastermind! (The mayor's charade does not exonerate Harris, however, because everyone on the team was told to ''specifically'' tell ''nobody'', a rule which Harris was breaking because he figured - wrongly - there'd be no harm telling the mayor.]]
* As seen in [[http://www.thatguywiththeglasses.com/videolinks/fbv/bmbe/9350-transmorphers this video]], in the film ''[[TheMockbuster Transmorphers]]'' the main character is eventually revealed to be [[spoiler:an android]]. The reviewer had this to say:
-->'''[[WebVideo/BadMovieBeatdown Film Brain]]''': What? What a twist!...[[SincerityMode I don't mean that sarcastically. That is a genuine statement from me. This is a shocking development]]. Mostly because he's the only one who can act. Remotely.
* The film ''Shattered'' follows a man who survives a car accident with amnesia. Along the way he discovers that [[spoiler:his wife was having an affair. She explains that she didn't say anything because she didn't want him to remember killing her lover. When he finds her lover's corpse, it looks just like he does after the doctors repaired his face to look like the photos of the man they believed he was.]]
* The movie ''Film/{{Identity}}'' does this, but in that movie [[spoiler:everyone is a tomato, at least in a IAmYouAndYouAreMe sort of way...]]
* In ''Film/{{Unknown 2006}}'', several men wake up in a warehouse with toxic-vapor-induced amnesia. They discover that some of them are kidnappers, and at least one of them is a kidnappee, but they don't know who's which. The protagonist hopes he's not one of the villains, and the gradual return of his memories eventually reveals he's an undercover cop. This comes as a great relief ... until, at the end, [[spoiler:he catches sight of the kidnapped man's wife, regains his memory of the affair he's been having with her, and realizes that he'd gone to the warehouse to ''kill'' her husband so they could get married and the kidnappers would be blamed.]]
* In ''Film/{{Unknown 2011}}'', Dr Martin Harris wakes up from a [[AsleepForDays four day coma]] after a road accident to find that another man has completely taken over his life and identity, to the extent that the impostor has the same family photos and is believed by his wife to be the real Martin Harris. Harris decides explore what happened in the four days he was unconscious, [[spoiler:eventually discovering that "Martin Harris" is not a real person but a cover story - Martin and his "wife" are undercover assassins, and the "impostor" is another agent sent to replace him after the accident, the trauma of which caused him to believe his own cover story.]]
* In ''Film/{{Moon}}'', the protagonist, after spending 3 years on the moon, [[spoiler:finds out, that he is the 5th clone to work the station, and all his memories of the time before he was there are implants. Together with the 6th Clone, they also find out that 'their' daughter, who they thought was a newborn, is actually 15 years old, and that they and the other clones are programmed to die at the end of their 3-year contract. The station has hundreds of clones ready to be woken up in a hidden room.]]
* In ''Literature/TheDaVinciCode'', [[spoiler:Sophie discovers that she is the possible descendent of Jesus whom she and Langdon have been speculating about.]]
* ''Film/Passengers2008'': Claire, a therapist counseling a group of plane crash survivors, grows suspicious when her patients start disappearing, and she suspects that the airline is behind it when a mysterious man starts coming around and insisting that the crash was pilot error. Meanwhile, others insist they heard an explosion beforehand. Claire takes on the mission of finding out what really happened while trying to protect her patients from what she believes is a corrupt airline. It turns out that [[spoiler:Claire was actually on the flight also and there were no survivors. The reason the patients are disappearing is because they accepted their deaths and are moving on. The mysterious man is the pilot, also dead, and he blames himself for the crash because he was distracted and tired, hence "pilot error."]]
* The original ending of the 2007 film version of ''Film/IAmLegend'' fits into this trope, at least metaphorically. It had [[spoiler:the main character realizing that the infected were actually intelligent and capable of love/compassion/etc., and had only been coming after him because he was kidnapping, experimenting on, harming and killing them in an effort to "cure" the disease; the 'leader' of the infected merely wants his mate back, and the various attacks had been acts of self-defence. Will Smith spent the movie believing that they were mindless monsters when, in fact, he was the monstrous one, albeit unknowingly. The title refers to this, as he's the boogey man in the infected's legends -- hence, "I Am Legend"]]. This was the ending in the book as well.
* At the end of ''Film/TheDeathsOfIanStone'' Ian Stone [[spoiler:turns out also be a Harvestor instead of the normal human he thought he was.]]
* ''Film/{{Frailty}}'' has two such twists. First is the discovery that the man the FBI agent has been talking to for most of the film [[spoiler:isn't Fenton, but Adam.]] At the very end of the movie, you find out that [[spoiler:Adam and his father aren't crazy, they really have been charged by God to destroy Demons walking the Earth]].
* ''Film/TheMachinist'' has Christian Bale's character Trevor, who hasn't slept for nearly a year, stalked and tormented by a man named Ivan. Ivan eventually kidnaps Nicholas, the son of the woman Trevor is (sort of) dating. Ivan appears to have murdered Nicholas, causing Trevor to kill Ivan. When disposing of his rug-wrapped body, [[spoiler:it unrolls and is empty. Trevor then remembers that "Nicholas" was actually a nameless boy that he had killed in a hit-and-run himself a year ago.]]
* The [[MindScrew Moebius strip]] of a film known as ''Film/{{Triangle}}'' does this in numerous ways throughout the movie, which largely consists of a repeated sequence that reveals more of its story every time, each time arriving at a ''Film/{{Memento}}''-like "how we got here". This story includes Melissa George's character Jess [[spoiler:[[TheKillerInMe running from a masked killer who turns out to be herself]], turning into that killer in an effort to evade her, and trying to warn away doppelgangers of herself and her friends.]] Then it's revealed that Jess is not [[spoiler: the saintly mother to her autistic son that she makes herself up to be, but instead a shamelessly abusive one.]] This constitutes this trope because Jess is [[spoiler: amnesiac when she learns about this]], which is why she proceeds to "rectify" this by [[spoiler: killing her EvilTwin doppelganger, attempting to take her son elsewhere, and getting him killed in the car accident that repeats the timeline all over again.]]
* The 2008 film ''Hide'' follows the journey of an OutlawCouple as, following her freeing him from a prison transport truck by causing it to crash, they head back to the town where they stashed their stolen loot prior to their gun battle with the police that led to his arrest. Along the way, however, they become aware that a SerialKiller has kidnapped the man's sister and is holding her captive in the very same now-deserted town...yet when the sister manages to free herself and the couple finds her, she freaks out at the sight of them [[spoiler:because the guy ''is'' the killer, leading to the sister's death and the girlfriend's torture and eventual murder]]. Then the last few minutes of the movie provide an even stranger twist. [[spoiler:[[DeadAllAlong The girlfriend had actually died during the aforementioned gunfight, the guy died when the prison transport truck crashed]], and now he's [[FateWorseThanDeath trapped in Purgatory]], [[GroundhogDayLoop killing his loved ones over and over again]]]].
* ''Film/TheTrumanShow'' has this LighterAndSofter, and somewhat inverted: Truman's not a tomato, everyone ''else'' is. And always has been.
* The protagonist in ''Film/{{Cypher}}'' is the hapless UnwittingPawn in a GambitPileup where one MegaCorp forces a MemoryGambit on him to fool their competitors LieDetector, said compatitor sabotages the MemoryGambit, and a ReverseMole from the first company convincing him to come back, all while the organization of [[TheChessmaster Sebastian]] [[MeaningfulName Rooks]] tries to play him and the {{MegaCorp}}s for suckers. Only at the end does he remember that he ''is'' Sebastian Rooks, and pulled that same MemoryGambit on himself before the movie started to pass the LieDetector.
** See, he's not a pawn, [[{{Anvilicious}} he's a rook]]. Geddit?
* After [[spoiler:Wynn]] is captured at the end of ''Film/CubeZero'', Jax reveals that [[spoiler:Wynn]] is NOT an employee overseeing the cube. He's just as much a lab rat as the Cube residents, as another layer of the Cube experiment to "observe the observers". So were his colleagues. He can't even choose execution over staying in the cube, as he already waived this right long ago... he simply doesn't remember because the real operators removed this information from his mind.
* Loki in ''Film/{{Thor}}'' had always felt somewhat left out: the [[{{Unfavorite}} unfavored]] second son, a [[MagicKnight trickster]] in a [[WorldOfBadass world of warriors]], et cetera. Thus, when he learns that he is also [[spoiler: secretly a Frost Giant (and [[LukeIAmYourFather the son of their mortal enemy]] to boot)]], he flips the heck out.
* The classic ''The Creation Of The Humanoids'' plays this to the hilt. AfterTheEnd, humanoid robots are all that allow the small population of human survivors to maintain their civilization. Fearing a TurnedAgainstTheirMasters scenario, the humans despise and fear the robots, and even have the Nazi-like "Brotherhood of Flesh" that seeks to expose robotic treachery. They think they're on to something when they discover a highly illegal 'Type 98' robot that thinks it's a specific human, and an additional memory module that causes any robot it's plugged into to think it's that human. TheReveal is that this is the result of a completely ''benevolent'' conspiracy between the robots and a human scientist to devise a way to transfer human minds into immortal, self-reproducing 'Type 100' robot bodies at the death of their organic bodies, and the protagonist (who leads the Brotherhood) and his new girlfriend have both been through the process already.
* Subverted in the 2008 film ''The Lazarus Project'' (originally ''The Heaven Project'') when Ben Garvey eventually accepts that [[spoiler:he is a patient at the psychiatric hospital]] but then, [[spoiler:after finding his supposedly hallucinated dog at the local animal shelter, finds that it was a plot to stop him leaving.]]
* ''Film/EdenLog''. After not even knowing his own name throughout most of the film, the man discovers that he is actually Tolbiac, the chief of security of Eden Log.
* ''Film/{{Oblivion 2013}}'' : [[spoiler: He's not the real Jack Harper, but a clone. He works for the Tet, which is [[PlanetLooters stealing the planet's water for fuel]]. And he's just one of many (we follow the 49th, which fights the 52nd later on, and Beech mentions that the Tet used an army of Harper clones as foot soldiers during the war).]]
* ''[[Film/NightAtTheMuseum Night At The Museum Secret of the Tomb]]'': Sir Lancelot has no idea wgat he really is, [[spoiler: until he crashes a Camelot play thinking it's really Camelot. The revelation that he is just a statue hits him hard.]]
* In ''Film/RubySparks'', Calvin keeps it a secret that his girlfriend Ruby was a fictional character who came to life. When she finds out, it is not pretty.
* ''Film/DonnieDarko''. The lead character has visions of a man named Frank who wears a large grotesque rabbit suit and claims to be [[spoiler:a time traveler]]. Following Frank causes Donnie to avoid being killed by a [[spoiler:Jet Engine that falls from the sky]]. Frank instructs Donnie on the actions he must take in order to save the future. The plan involves a metal artifact that will serve as a DeusExMachina, a resolve to the central conflict of the plot. Donnie locates the artifact in the form of [[spoiler:a gun]]. Donnie uses the artifact to [[spoiler:shoot the man who accidentally hit Donnie's girlfriend with his car]]. The scenes that follow reveal that [[spoiler:the man Donnie shot was in fact Frank, that the tragedy of his girlfriend's death was the result of his own actions, and that the artifact that will save everyone is not the gun that Donnie found but the Jet Engine that must fall on Donnie Darko, to avoid the tragedies of what would follow had it not. The Jet Engine itself being a time traveling artifact that would have fallen off the plane Donnie Darko's family would have been on, if Donnie had survived. Thus, revealing at the end that Donnie Darko is the villain of this story, and he must save the future from himself.]]
* In ''Film/FrozenDays'', the main protagonist’s true identity seems to vanish as she assumes that of a comatose man. [[spoiler:It turns out in the end that she was the comatose one the whole time.]]
* In ''Film/TheWard'', Kristen is institutionalized under mysterious circumstances, and quickly becomes aware that something strange is going on in the psych ward: She's visited in the night by a ghostly woman, the fellow female patients she's befriended keep disappearing mysteriously whenever they show signs of improvement, and the staff refuses to speak of what happened to the other girls or admit that anything is wrong. Her friends are only slightly less cagey than the staff, but eventually reveal that they had killed a fellow patient named Alice, whose vengeful ghost is now murdering them. But while attempting to escape, Kristen learns that [[spoiler: she ''is'' Alice, or more specifically her latest SplitPersonality - the other girls are also Alice's multiple personalities, they "killed" Alice via SplitPersonalityTakeover, and they're disappearing one by one because of an experimental hypnosis treatment that's eliminating her personalities one at a time.]]
* ''Film/{{Haunter}}'': Lisa is initially shocked to discover that she and her family are actually ghosts, but she adjusts fairly quickly.
* Subverted in ''Film/ExMachina''. After Caleb discovers Nathan's past failures and the extent of his manipulations, he has a FreakOut and starts to cut on himself to find out if he's actually a robot with false memories. He draws dark red blood, showing that he isn't.
* At the end of the English-Arabic movie ''Djinn'', the male lead realizes that he's actually a Djinn himself. He then throws his wife off a building in retribution for her previously having killed their child because she was starting to realize that he was an EnfantTerrible.
* In ''Film/TheIsland'', a vague apocalyptic disaster supposedly left a majority of Earth uninhabitable, save for the eponymous Island and the facility the survivors live in. [[spoiler: Then the main characters find out that they and the other "survivors" are all [[PeopleFarms clones of celebrities]], [[HumanResources used as organ donors, surrogate mothers, etc.]], and being chosen to go to the Island means being [[ReleasedToElsewhere killed and harvested from]]. Naturally, their originals have no idea this is happening.]]

* Creator/StephenKing probably has more than just the one, but an early story, "Strawberry Spring," (published in the collection ''Literature/NightShift''), has something like this happen to the narrator, [[spoiler:who realizes he has a dissociative serial killer personality that only emerges during the fogs of titular "Strawberry" springs.]]
* ''Literature/ShutterIsland''. [[spoiler:Teddy Daniels is Andrew Laeddis, who killed his wife after she drowned their children. He has been searching for Laeddis throughout the novel only to find that he IS Laeddis under a horrible delusion. Maybe.]]
* In the BittersweetEnding of ''Literature/{{Night}}'', Elie Wiesel (or an AuthorAvatar of him) is liberated from the Buchenwald concentration camp at the cost of losing his family. When he finally gets home, he looks at himself in a mirror and sees the full extent of what TheHolocaust has done to him. He describes himself as nothing more but a corpse.
* Creator/HPLovecraft's horror works:
** One of the earliest examples is "The Outsider", a first person point-of-view story that follows a mysterious lonely individual who cannot remember coming in contact with people. When he escapes his tower, he scares off the first people he sees and spots his reflection, revealing him to be -- ta-dah! -- undead.
** Lovecraft did this one again in the novella ''Literature/TheShadowOverInnsmouth,'' which ends with the protagonist discovering that he is one of the {{Half Human Hybrid}}s that are the titular TownWithADarkSecret's dark secret.
** And again in his story "Facts Concerning the Late Arthur Jermyn and His Family".
* In the story "To Mars and Providence", published in the anthology novel ''Literature/WarOfTheWorldsGlobalDispatches'', this happens to Lovecraft himself; he discovers he's actually one of the elder gods whose eventual return forced the Martians to flee their homeplanet and invade Earth.
* Creator/PhilipKDick used this trope frequently as both a device and a premise. In the short story "Imposter", the protagonist searches for an android with a bomb inside it sent to Earth by hostile aliens, only to find that he himself is the android.
* J. G. Ballard was also fond of this device, and employed it in his 1960 story "Zone of Terror."
* In Creator/FrederikPohl's science fiction "The Tunnel Under the World" the main character becomes convinced that some sinister conspiracy is keeping the citizens of his town stuck in a GroundhogDayLoop by erasing their memories every night. He eventually learns that [[spoiler:he and everyone else in the town were killed in an explosion, and their consciousnesses have been installed into tiny androids in a scale model town where they repeat their final day over and over while researchers use them to test the effectiveness of advertising jingles and political slogans.]]
* ''Literature/{{Goosebumps}}'' was fond of this one.
** ''A Shocker On Shock Street'': A kid whose father is a horror movie director is menaced by horrible things; turns out he's the robot star, and the whole thing was part of the movie.
** You also have ''The Ghost Next Door'', in which the girl suspects ghosts only to find out that she's the ghost.
** ''My Hairiest Adventure'': a kid starts growing hair after trying some instant-tanning lotion. He thinks there's something wrong with the lotion and he's turning into a dog as a result, but everyone insists the stuff is harmless. Turns out it is, he was born as a dog, and so were all the other kids in the town. The adults are involved in an experiment to turn dogs into people, but it's starting to wear off...
** Another book by the same author (though not part of the ''Goosebumps'' series) involves a kid who is convinced that everyone he knows is being replaced with a duplicate, a la Film/InvasionOfTheBodySnatchers. Turns out at the end that he is a robot, and his memory chip is malfunctioning.
** In ''Vampire Breath'', does the protagonist find out that the vampire he woke up is actually [[LukeIAmYourFather his grandfather]]. In the live-action adaptation, he and his sister even get fangs and coffins at the end of the episode.
** ''I Live in Your Basement'', one of the last in the original series, tells the story of a boy who is stalked by a possessive, inhuman entity that lives in his basement. The end reveals that the monster is the narrator, dreaming that he was in the shoes of the kid upstairs.
** The short story ''The Werewolf's First Night'' features a boy being terrorized by a pack of werewolves. [[spoiler: It turns out that they're really humans playing a mean prank on him... but he discovers he actually ''is'' one. He then uses this chance to get some revenge and chase them.]]
* In the novel ''Literature/JohnDiesAtTheEnd'', while dealing with a conspiracy involving agents of a parallel universe, the protagonist/narrator David discovers self-incriminating evidence and catches a glance of what appears to be a dead body in his tool shed. He can't remember a half-hour or so of his day, while his gun is missing a single bullet. He also finds out about a young woman, Amy, who went missing around the same time. He immediately suspects he murdered her during a bout of temporary insanity, but while following clues, he discovers that she's alive and well, but can't remember anything from when she went missing. He later learns that those conspiratorial agents are in fact perfect clones that have replaced other people in the city. Over the course of a few days, he uncovers some very unsettling information, protects Amy from the forces of darkness, falls in love with her, travels to the parallel universe with his best friend John, and cripples the organization behind the invasion. When he finally takes a good look inside his tool shed, [[spoiler:he discovers a corpse that looks exactly like himself. Assuming that this corpse was an intended replacement that he shot in self defense and blocked it out, he goes to reveal the identifying mark of the clones on the bottom of the body's foot. When the mark isn't where he expected to find it, Dave checks his own foot and learns that ''he'' is the clone, and personally killed the original Dave. At first, he's suicidal with guilt, but since he is completely indistinguishable from the real Dave in every way (aside from the mark on his foot that regular people can't see) and anything that would have controlled him is now dead, John and Amy manage to convince him to go on living his life as if nothing had happened. Except for his friend John occasionally calling him "Monster Dave" as a joke.]]
* Done twice in the ''Crucible'' trilogy by Sara Douglass. First, the protagonist goes out to return the demons to Hell -- only to find out that both his wife and best friend (and soon-to-be-king) are demons. Then, when the antagonist role shifts to the angels, he discovers he is an angel too, and thus doomed to send all mankind into eternal slavery. Poor Tom.
* Appears in Creator/HunterSThompson's seminal work The Kentucky Derby is Decadent and Depraved, wherein the main character and his foreign photographer searches Kentucky during the annual horse race derby for the very poster child of the decadence and depravity associated with the derby. In the end, after four-five days of madness, culture shocks and innumerable amounts of alcohol, his photographer exclaims: "It's us!"
* Subverted in ''Literature/BreakfastOfChampions'' wherein a man of declining mental health becomes convinced that failed Sci-Fi writer Kilgore Trout's short story really is a letter from God revealing his Tomato in the Mirror status.
* ''Literature/{{Sabella}}'' by Creator/TanithLee ends with the reveal that [[spoiler:she and the main male character are both native Martian copies of human children who died in a certain underground cave.]]
* ''Literature/KillTheDead'', also by Creator/TanithLee, ends with the reveal that [[spoiler:ghost-killer Parl Dro is, himself, a ghost.]]
* Done excellently in the ''Literature/{{Dragonlance}}'' short story "The Best." It is done in first person, with the narrator being a noble who's hired the four best dragonslayers in the land to kill a dragon who's been terrorizing the countryside. At the end of the story, they reach the dragon's lair, and it's revealed that [[spoiler:the narrator actually ''is'' the dragon in a magical disguise, and he's gathered them all together to take them all out at once, so he can sleep in peace]]. And it works.
* ''Literature/ThursdayNext''
** In ''First Among Sequels'', when [[spoiler:Thursday1-4 is impersonating Thursday the second time, the first person narrator actually switches to Thursday1-4, so even the audience is fooled... until she starts thinking about her villainous plot again.]]
** Goliath, the evil corporation, replaces people with synthetic versions on such a regular basis that the GenreSavvy characters check themselves frequently to make sure their still . . . them.
* Lord Dunsany's short story "The Return", in which the narrator--who promises a real ghost story--only discovers at the end that he is the ghost. (Also broadcast as a radio play.)
* The short story ''The Copy'' by Creator/PaulJennings features a copy machine (which creates a mirror-image replica of objects put into it) which a boy uses to copy himself so he can beat down a bully, but becomes jealous of his copy and kills him. Afterwards, his mother remarks that it's odd - his mole used to be on the other cheek, and he's writing with his left hand instead of his right...
* This is the plot of the ''Literature/StarTrekDeepSpaceNineRelaunch'' novel ''Fearful Symmetry'', told first from Captain Kira's perspective, then from that of her double, Iliana Ghemor, a Cardassian sleeper agent altered to look like Kira and remember being her. In the novel, Ghemor is the tomato; in the ''Deep Space Nine'' episode it was a sequel to, the tomato was [[spoiler:not Kira.]]
* Creator/AlastairReynolds does this a lot in the ''Literature/RevelationSpace'' novels. ''Chasm City'' offers a particularly convoluted example: Our lovable hero Tanner is actually [[spoiler:the war criminal Cahuella, after stealing Tanner's identity and buying into his own cover. Cahuella experiences flashbacks of the life and times of the near-mythological psychopath Sky Haussmann, and believes them to be the result of the indoctrinal virus he is infected with. Actually, he is Sky Haussman.]]
* In Nick Harkaway's ''Literature/TheGoneAwayWorld'', a CrapsackWorld in which a super weapon poked big holes in the time-space continuum and which is held together by AppliedPhlebotinum the narrator tells the story of himself and his best friend Gonzo and how the world came to be. [[spoiler:About halfway through when the story shifts to present tense we find out that the narrator is Gonzo's imaginary friend who has been made flesh by an accident involving said phlebotinum.]]
* In the Creator/GeneWolfe's ''Literature/TheOtherDeadMan'' the protagonist fights off CameBackWrong crewmates. Then he is shown a mirror...
* ''Literature/HarryPotter'':
** In ''Literature/HarryPotterAndTheOrderOfThePhoenix'', Harry believes himself to be the tomato when he overhears members of the DA mutter something about him being possessed by Voldemort. As he'd just witnessed/felt like he'd actually attacked the father of his best friend, he is terrified of the possibility that he'd been the one attacking people. He wasn't.
** Towards the end of the series, Harry realized that [[spoiler:he is a horcrux. For Voldemort to die, Harry himself must die because he is what is holding Voldemort to life. The reverse is also true, so Harry doesn't die, because Voldemort destroys ''his'' lifeline first and ''then'' gets killed. This is why the prophecy stated that "neither can live while the other survives."]] Also, Harry realizes this is the reason for the similarities between himself and Voldemort...[[spoiler:because he IS Voldemort, at least partially.]]
* The ''Franchise/StarWars: Literature/GalaxyOfFear'' book ''Clones'' features, you guessed it, [[CaptainObvious clones.]] Possibly subverted. Tash Arranda flees a horde of evil clones of herself and her brother, sheds her own clothes and dons one of the jumpsuits they're wearing, and hits her head so the past few minutes are blurred together and confusing. She finds a defective Tash-clone that thinks she is the real girl and the others are after her. Since they seem to have her memories, Tash freaks and wonders for a while if ''she'' isn't a defective clone herself. Soon enough she decides she's not. For one, only she has the necklace her mother gave her. For two...
--> Tash remembered the two clones of herself that she'd met. Both had known everything she had known. But they were still different from her. One had been angry, almost [[EvilTwin evil]]. The other had appeared frightened and defeated. The real Tash had been bothered by the sense of the dark side, but the first clone must have been totally absorbed by it. Later, Tash had been frightened by the army of clones, but the second clone had been petrified.
--> So they weren't ''exactly'' like her. They couldn't have the same feelings. They hadn't had the same experiences, just memories of those experiences. The feelings attached to them were absent.
** Played straighter in an earlier book, ''City of the Dead''. In that book, injecting a corpse with a certain serum and exposing them to boneworm slime caused them to rise as a zombie. The MadScientist looking into this also found that [[ProfessorGuineaPig injecting himself]] with the serum before he died, and then getting bonewormed after death, made him come BackFromTheDead as a zombie with all his memories and facilities intact, though he did tend to twitch. Then, trying to eliminate the twitch, he injected Zak Arranda with the serum, poisoned him into a coma so deep he was declared dead and BuriedAlive, and therefore had him exposed to boneworms. Later Zak categorically denied that he was now a zombie, since he was still alive and actually had never died, and he doesn't have the SuperStrength of [[OurZombiesAreDifferent these zombies]]... but he does twitch a little at the end of the book. Maybe this means that he'll come back after he actually does die.
* [[http://www.youtube.com/watch?v=Q5M0PcVC2dw "Something Was Wrong"]] from the second book of the ''Literature/ScaryStoriesToTellInTheDark'' series.
* Creator/TedDekker's Christian suspense novel (and later movie) ''Film/{{Thr3e}}'' is about a young man tormented by a serial killer that decides to make him his next victim. He's aided by an old childhood friend and an FBI agent whose brother was one of the victims. It later turns out that [[spoiler:both the "killer" and the childhood friend are alternate personalities of the main character, caused by [[FreudianExcuse the abuse his adoptive mother put him through as a child]]. In fact, the "evil" side of his personality isn't the same serial killer that killed the agent's brother at all--the main character heard about the murders and his other personality started to copy them.]]
** This is also the plot of Sidney Sheldon's ''Tell Me Your Dreams'' and several other books and movies.
* At the climax of ''Literature/TheDemonsLexicon'' by Sarah Rees-Brennan, [[spoiler:Nick, the protagonist, learns that he's not human--he's actually a demon who was bound into the body of an infant and grew up thinking it was his own]].
* A rare happy example of this trope: throughout Terry Brooks' ''Literature/MagicKingdomForSaleSold'', Ben Holiday spends the novel trying to find a way to summon the Paladin, the invincible champion of the kings of Landover, only to discover when he is finally successful that [[spoiler:he himself is the Paladin]].
* OlderThanRadio: Used in the 1839 Creator/EdgarAllanPoe short story "William Wilson," wherein the titular VillainProtagonist discovers that the mysterious doppelganger that has been constantly foiling his schemes is himself, or rather the personification of his conscience.
* This happens in Literature/The39Clues, at the end of Book #7 - "The Viper's Nest". Near the end, they discover that Amy and Dan are [[spoiler:Madrigals.]]
* The urban fantasy book ''Literature/WhiteApples'' by Jonathan Carroll has an enemy mook who [[spoiler:is ordered to a barbershop to meet the ''King of the Park'', a notoriously dangerous bad guy. As he enters the barbershop, he is terrified, desperatey trying to figure out which of the people present is this nasty character, until it is revealed that the King of the Park is not a single person, but a series of people who have been given his power; the people in the barbershop are there to transform ''him'' into the King of the Park, until the end of his mission.]]
* The young adult series ''Literature/{{Mindwarp}}'' has one of these. The kids at the core of the series, teenagers with superpowers who're hunted by alien shapeshifters, often make reference to Todd, a kid who vanished from their small town before they started coming into their powers. Come book 5, Todd shows up back in town; to him, there was a bright light one night, and he returned several months later with no knowledge of the intervening period. [[spoiler:Surprise -- he's actually an alien shapeshifter on very, ''very'' deep cover trying to flush the kids out. He defies his programming, however, and disguising himself as one of the other kids so the aliens take him instead]]. The trope is also played with every kid in the series. [[spoiler:They're part aliens too.]]
* In ''Literature/{{Wonderland}}'' by Joanna Nadin, what was designed as a clever plot twist was actually made pretty obvious to the readers. The main character begins about to kill herself and her best friend, encouraged by that friend. Then the story is told in flashback and she realises [[spoiler:she IS her best friend. She has Dissociative Identity Disorder, apparently.]] Many readers called it, especially since [[spoiler:NO ONE else interacted with the friend, and the main character hid all reasons why she went to see her]], and so the plot twist was no longer there.
* ''Before I Go To Sleep'' by S.J. Watson is about Christine, a woman who each day forgets everything that has happened to her for years (she is in her 40s, but cannot remember anything since her early twenties). Each day, her husband (who she does not recognise) explains to her what has happened to her, why this is the case, and what happened to her to make her like this. Later, she meets a doctor, who suggests that she keep a written journal (a film journal in the movie) to keep some sort of day-to-day continuity. Through this, and further meetings with the doctor, she discovers that her husband has been lying to her about parts of their past; he explains this as embarrassment about certain events, as well as an inability to cope with having to explain too much to her every single day; the reader is led to believe instead that he is abusive, unfaithful husband who is using Christine's amnesia to hide a dark part of their relationship. However, [[spoiler:the eventually revealed reality is even worse; he is not her husband at all, but a sociopath who has abducted her and used her memory loss to convince her of his false identity as her husband. Furthermore he is the one responsible for her condition; they previously had an affair, and when she broke it off he viciously beat her and left her for dead.]]
* In ''Literature/TheAdorationOfJennaFox'', the titular character Jenna wakes up from a year-long coma after an unspecified accident with no memories of her life. Her parents say that she'll remember with time, and she does begin doing so, but it doesn't take her long to realize that something's off, something her parents are hiding from her. TheReveal is that [[spoiler:90% of Jenna is artificial and only 10% of her brain is from her old self. Oh, and the operation to give her a new body after the car accident is illegal, which is why her parents are hiding out in a secluded place]]. She even says "I'm not a tomato" at one point; it does [[ItMakesSenseInContext make sense in context]].
* In ''[[Literature/FeverSeries Shadowfever]]'', Mackayla Lane figures out fairly early in the story that [[NormallyIWouldBeDeadNow she must be some kind of Tomato since she's still alive.]] Afterwards, the plot is divided between Mackayla trying to figure out who or what she really is and the search for the [[TomeOfEldritchLore Sinsar Dubh]] which has been the MacGuffin of the entire series. In the end, it is revealed that [[spoiler:Mackayla was imbued with the essence of the Sinsar Dubh before she was born.]]
* A variant of this trope occurs in the ''Literature/WorldWarZ'' supplement "Closure, Ltd". The interviewer is given what appears to be a tour of the titular organization, which provides [[ExactlyWhatItSaysOnTheTin closure for customers]] by dressing up a zombie to look like a loved one and kill it. The interviewee goes at great length to explain the detail they take, flat-out explaining that his customers generally know that the end-product isn't ''really'' their reanimated loved one, but the need for closure is so great that they don't care. [[spoiler:it's hinted at the end that the Interviewer isn't really an interviewer: he's a customer, and at the end, he shoots the zombie they dressed up for him.]]
* In the ''TabletopGame/MagicTheGathering'' short story collection ''Shadowmoor'', one of the stories is "Meme's Tale," in which the titular heroine is forced to flee her goblin family, and has no idea why they exiled her until she glimpses her reflection in a pool and sees that [[spoiler:she's an elf.]]
* Mira, the only human character in Rick Griffin's ''Literature/{{Argo}}'', finds out at the climax that she, as well as most if not all the human race, is an android.
* At the end of Diana Wynne Jones's ''Literature/ArchersGoon'', Howard Sykes finds that he is [[spoiler:Venturus, and that he's keeping all his siblings stuck in one place in time and space.]]
* In the ''Literature/{{Otherland}}'' series by Creator/TadWilliams, one of the many charcters you follow is Paul Jonas, a man who has lost his memeories. He picks up bits an pieces over the first three books, but in the last one finally discovers not only his past, but that [[spoiler: he is a digital clone of the real Paul Jonas]].
* Done in a ''Series/SesameStreet'' book, of all places! ''Literature/TheMonsterAtTheEndOfThisBook'' has Grover being terrified of the title character and pleading with the reader not to reach the end of the book and reaching the monster. HilarityEnsues as Grover tries increasingly drastic measures to prevent the reader from reaching the end of the book. When the reader finally reaches the end, Grover thinks he's doomed...but then he realizes that ''he'' is the monster at the end of the book. Go figure.
* In Creator/NeilGaiman's novella "Murder Mysteries", the main character turns out to be a disassociative serial killer who doesn't remember his crimes, or that anything is wrong at all, until after he's told about a murder investigation that happened in heaven prior to the creation of the universe, by an old man who may or may not have been the Archangel Raguel, whose function is to serve as the Vengeance of the Lord.
* [[Literature/{{Dragons}} The Last Dragon Chronicles]]: [[spoiler:Agawin is Alexa.]]
* In the Creator/OHenry story "A Man About Town", the protagonist is obsessed with learning more about people, particularly stereotypes like the titular "Man About Town". He questions people, including a learned friend. His obsession causes him enough travel and tunnel vision that he has a traffic accident. In the hospital, he reads a newspaper article about the accident [[spoiler:where the victim is described as a "typical man about town."]]
* In Mira Grant's ''Parasitology'', the main character, Sal, is a tapeworm who has taking control of her host's body. An astute reader will figure this out considerably faster than Sal does, but, to be fair, she hasn't read the blurb.
* [[Literature/UkiahOregon UkiahOregon's]] realization that he's an alien (actually a HalfHumanHybrid, but he doesn't know that yet) is rather traumatic for him, especially since he now has to explain this to his brand-new girlfriend.
* ''Literature/{{Pact}}'' follows Blake Thorburn and his DistaffCounterpart Rose Thorburn, who is an artificially created vestige trapped in a mirror world. After Blake [[{{Ret Gone}} has his connections to the world eaten by a demon,]] however, Rose steps into the real world, assuming his place amidst his family and friends. Blake eventually realizes that this means that [[spoiler: he, not Rose, is artificial, created so that Rose, protected in her mirror world, would have someone to take the blows for her as she was initiated into the secret family practices, and that correspondingly everything about his past was calculated in order to make him [[HatesBeingTouched avoid physical contact]], which made him decay, while simultaneously being [[TheIdealist someone that would do everything in his power to help Rose]], a family member trapped in a terrible situation.]]
** And then we get another reveal when [[spoiler: it turns out that neither is truly the original. They were created by a demon splitting an original Ross/Rose Thorburn in half, with the original's traits being selectively divided between the two.]]
* [[spoiler:Repple finding out he is not Shade Vassily but a clockwork robot]] in the ''Series/DoctorWho'' novel, ''[[Recap/NewSeriesAdventuresTheClockwiseMan The Clockwise Man]]''.
* Subverted in Rog Phillips' "Rat in the Skull", in which a laboratory rat unwittingly lives its whole life hooked up in the pilot's seat of a MobileSuitHuman. When some teenage boys stumble upon the inert robot and remove the sleeping rat, the narration muses upon how traumatic it would have been for "Adam" to discover its real nature ... except the psychologists conducting the experiment never allowed their test subject to learn what a rat ''is'', so the poor thing's perplexity remains complete to the end.
* Creator/VCAndrews' ''Literature/MySweetAudrina'' is about Audrina Adare, a little girl who was born exactly nine years after her older sister, also named Audrina (Or the First and Best Audrina), was gang-raped and murdered. Audrina also has trouble keeping track of time and has no memories of her early life, and her father keeps telling her that she needs to absorb the First and Best Audrina's gifts and memories. At the end of the book, it is revealed that [[spoiler:there ''was'' no First and Best Audrina. Her father wanted her back to the way she was before the rape, and used shock therapy on her, along with other things]].
* ''Literature/{{MARZENA}}'': Lauren Hackenhoek is just your everyday ordinary american girl dreaming of one day becoming a doctor. Then the day comes when she becomes a neurosurgeon, and then a tragic accident occur, one of her patients becomes a mass murderer. Lauren loses everything, she ends up in the streets, then somebody picks her up and offers her a good job with a good pay. The work? Doing consultation for a Private Intelligence Company. Everything is doing great, except for her own medical examination. Lauren has something weird inside her head, her brain is full of microsurgical scars. That's because Lauren is really a [[spoiler: body double of the real Lauren made by [[MagicPlasticSurgery Plastic Surgery Magic]]. Her memories of who she is are all an artificial construct from dream and drug therapies]].
* In the Franchise/MarvelCinematicUniverse Tie-In ''[[Literature/BlackWidow Forever Red]]'', Alex Manor seems like an OrdinaryHighSchoolStudent who constantly gets into fights because he has a low tolerance for bullying. Then one day he meets a girl named Ava who knows everything about him even though they've never met before. A short while later he and Ava are being pursued by Russian mercenaries, only to be rescued by the famed superhero and secret agent [[ComicBook/BlackWidow Natasha Romanov]]. He soon finds out that he's able to speak perfect Russian despite never having learned the language before, and he suddenly begins displaying enhanced skill in hand to hand combat despite never taking any martial arts classes. Then it turns out that Black Widow has been spying on him for the last 2 years. It turns out that [[spoiler: he's really Alexei Romanov, Black Widow's younger brother who she placed in WitnessProtection with FakeMemories to protect him from her EvilMentor Ivan Somodorov.]]
* In ''Literature/EmilyTheStrangeStrangerAndStranger'', after losing the Emily Jeopardy, Emily discovers that she may be the clone Emily, not the real one.
* Subverted and parodied in Lavie Tidhar's novel ''Osama''. The GenreSavvy reader has suspected all along that the protagonist is an AlternateUniverse version of UsefulNotes/OsamaBinLaden, and near the end he sees a portrait of Osama bin Laden that looks exactly like a bearded version of him. Then he discovers that it's actually a mirror with a false beard attached.
* In the original book version of ''Literature/UpInTheAir'', Ryan Bingham notices strange charges on his credit card and frequent flyer miles and suspects identity theft. At the end, it's implied he is responsible for these charges, as he's suffering from blackouts and memory loss.
* In the short story "Quest" by Lee Harding, an old man is searching for something non-artificial on Earth out of nostalgia. At the end, when he discovers that there is nothing left and the police are coming to arrest him, he tries to commit suicide to prove that he, at least, is not artificial. He is.
* In ''Literature/DarkestPowers'' the audience knows that [[spoiler:Liz]] is dead, however when Chloe tells her she goes into denial until someone else later confirms it.
* In "Literature/TheTownWhereNoOneGotOff", by Creator/RayBradbury, has a protagonist that is [[IllKillYou suddenly threatened by an old man]], so he reveals [[spoiler:that he was planning on killing someone in this town, which surprises the protagonist, too]].

[[folder:Live-Action TV]]
* One episode of ''Series/ThirdRockFromTheSun'' has Harry suffer a blow to the head, resulting in amnesia. The result is that he becomes alarmed that his family are aliens without realizing he is one as well. Crosses over into DramaticIrony.
* ''Series/{{Angel}}'': in "Spin the Bottle", everyone's memory is wiped back to age 17. Wesley, who at that age was head of his class at vampire-hunting school, reckons it's a test: they've been locked in this abandoned building with a vampire, whom they must identify and kill. Angel (who at that age was a living human), in a private moment, looks at a mirror ...
* ''Series/AreYouAfraidOfTheDark'':
** "The Tale Of The Thirteenth Floor''. The adopted Karin is invited to TheLittleShopThatWasntThereYesterday on the 13th floor of the apartment building. The employees are soon revealed to actually be aliens with three fingers and [[TheBlank no faces]], and seem to be trying to abduct her. After she and Billy escape, and the ship leaves, Olga reveals to Karin through the TV that the aliens left her there ten years ago and were trying to rescue her. Billy then looks at her and sees that she has {{shapeshift|ing}}ed back into a faceless alien as well.
** "The Tale of the Dream Girl". Johnny, after putting on a girl's ring, is being pursued romantically by the ghost of the ring's owner. The girl in question has a backstory and death similar to that of the song [[TeenageDeathSongs Teen Angel]], where she ran back into a car that's dead on the train tracks to get her ring when the train hit. Johnny eventually realizes that he was in the car with her (and her boyfriend). He ran back to pull her away but he didn't make it and died with her. This is why his sister is the only person who can see him and why his mother ignores him, why their boss looks guilty after NOT needing a mechanic due to Johnny's work and why his sister gives him a funny look when he tells her no he can't calm down, how would she act if she saw a ghost.
** Another episode had a girl thinking the new neighbour was a ghost, only to learn she was the one who was dead.
*** That was actually an episode of ''Series/{{Goosebumps}}''.
** Another girl wanted know about the story of a ghost car that appeared every year at the corner of the cemetary. Her two new friends helped figure out microfilm and learn the sad story of the young man wanting to meet his date who was tragically lost. Now the girl knows the story she can reveal she is the ghost the car is waiting for and goes to meet the driver.
* The ''Series/ArrestedDevelopment'' episode "Marta Complex" has Gob overhear a phone conversation Marta has with her mother where she says she no longer loves Gob and is in love with "Hermano". Gob asks Michael to find Hermano for him. At the end of the episode, Michael discovers that Hermano is [[spoiler:Spanish for "brother". Marta was telling her mother that she was in love with Michael, Gob's brother.]]
* ''Franchise/{{Arrowverse}}'':
** ''{{Series/Arrow}}'' does this in season 3 with Sara's killer. Roy/Arsenal has been having bad dreams ever since that night; in the dreams, he kills Sara by throwing three arrows into her chest. Since Roy was injected a while back with a super-serum whose cure was experimental, there seems a possibility that the dreams are real. It turns out they aren't. In season 2, whilst under the effects of said super-serum, Roy blacked out and killed a cop. Those suppressed memories are resurfacing and mixing with his feelings of grief for Sara.
*** Played straighter with the reveal of who actually killed Sara- it was Thea, drugged by Malcolm Merlyn. She's horrified and furious to discover what he made her do.
*** Played with again in season 5. The villain Prometheus has decided to play massive mind-games with all of Team Arrow, starting with convincing Quentin Lance that he ''is'' Prometheus. Due to Quentin's previous animosity towards Oliver (both his daughter's got involved with Oliver and both have died [[spoiler: ''and'' come back to life]], and Oliver has ignored/twisted the law for years), plus his relapse into alcoholism, we almost believe it. Until he goes straight to Thea and tells her what's been happening, and she sets him straight.
*** Prometheus then tries to make Oliver into the villain by showing him his past brutality with a recreated crime scene. Oliver in season 1 had no problems killing anyone that got in his way. At this particular scene, he left a trail of largely unnecessary bodies about a mile long. The topper is when Prometheus dresses up his hostage (Felicity's current boyfriend and a good man) in his costume and sends him out for Oliver to kill. The fact that Oliver didn't realize the trick in time makes it all the more worse.
** Season 2 of ''Series/{{The Flash|2014}}'' gives us Zoom, from Earth-2, who murders cops left and right and nearly kills Barry a couple of times. Who is he? Well, his real name is Hunter Zolomon; but we know him better as Jay Garrick, the Flash of Earth-2, friend of Barry, Caitlyn's boyfriend, all around good guy. All the more shocking because his introduction comes on the heels of him murdering his own time remnant.
*** The show pulls another one with The Man in the Mask, a prisoner of Zoom's whose identity was a 'shocking secret' for about half the season. The season finale shows that not only is he the ''real'' Jay Garrick, from Earth-3, but he's a doppelganger of '''Barry's dad'''. Who was just murdered by Zoom.
*** [[spoiler: Barry Allen]] has a moment of this in the Season 3 episode "I Know Who You Are", when Savitar kneels, removes his armor, and reveals himself to be [[spoiler: Future Flash. The very last scene of the episode is a side shot of Barry and Future Flash staring at each other.]]
** ''Series/{{Supergirl 2015}}'': Samantha Arias seemed to be a completely average single mother raising her daughter Ruby. Then she starts developing powers like super strength and durability. She meets her own mother, who explains that she found her as a baby in a spaceship. [[spoiler:When she goes on a journey and forms the Fortress of Sanctuary, the Fortress' AI tells her she is a genetically engineered being from Krypton, but her TeenPregnancy with Ruby delayed her development, which is why her powers are only emerging now instead of [[PubertySuperpower in her teens like it normally goes with Kryptonians]]. She becomes excited, thinking she can become a great hero like Supergirl, but the AI informs her she was designed to be Supergirl's enemy and then burn the world of man down. Horrified, Samantha tries to reject it, but the AI forces her to revert to her "true" self, Reign, the Worldkiller.]]
* ''Series/{{Battlestar Galactica|2003}}'' has done this with five characters. Boomer spends the first season wrestling with the slow realization that she's the Tomato in the Mirror. Moreover, as of the Season Three finale, [[spoiler:Tory Foster, Galen Tyrol, Sam Anders, and Saul Tigh are "triggered", and realise they're Cylons.]]
** Boomer literally has a bad experience with her locker mirror, on which someone (herself? - even her Cylon personality isn't sure) has written the word CYLON in big yellow letters.
** [[spoiler:Starbuck]] goes through her own version of this trope after [[spoiler:[[DeadAllAlong finding her own dead body and crashed Viper]]]]. Turns out she's just [[spoiler: a literal angel]].
** And in the series finale Head!Baltar and Head!6 explain [[spoiler:in the final scene set hundreds of thousands of years later that [[http://en.wikipedia.org/wiki/Mitochondrial_Eve Mitochondrial Eve]]]] is actually [[spoiler:Hera (the Human/Cylon infant that both sides have been desperately trying to protect or kill)]] thus making [[spoiler:Us the descendants of three species: the Cylons, the "Alien" humans and the "Native" Humans. WE ARE THE TOMATOES!]]
* ''Series/BeingHumanUS'', Sally Malick is first hunted by a ghost calling himself the Reaper, who claims that it is his duty to destroy ghosts who, like Sally, have stayed on earth too long or who have become destructive in some way. Then the Reaper starts trying to recruit Sally to become a Reaper, and then starts destroying innocent ghosts, increasingly seeming like a psychopathic serial killer. Yet, for some reason, everyone seems to be blaming Sally for the killings, even though she is desperately trying to stop the Reaper. Until the reveal that [[JekyllAndHyde she is]] [[ImaginaryFriend the Reaper]].
* In the ''Series/BlackMirror'' episode "[[Recap/BlackMirrorWhiteBear White Bear]]", the reason why Victoria is unable to remember who she is and what is going on around her is because [[spoiler:the White Bear employees are keeping her in an AmnesiaLoop, psychologically breaking her down through a TraumaCongaLine [[FateWorseThanDeath again and again]]. The reason why this is happening is because the little girl she saw in a photograph she thought was her daughter was actually her and her boyfriend's ''victim'', and she recorded the six year-old's torture and death at her boyfriend's hands]].
* ''Series/BuffyTheVampireSlayer'':
** The Buffybot, in her premier in the episode "Intervention". Not only did she think that the real Buffy looked like ''her'', but [[spoiler:so did everyone else.]] Also parodied, in that the Buffybot is quite overtly a heavily {{Flanderized}} version of Buffy herself; [[spoiler:Buffy is, not entirely surprisingly or unreasonably, a bit pissed that her friends were completely unable to tell the difference. Especially since "s/he's a robot" as an immediate explanation for the MonsterOfTheWeek was almost a RunningGag for the season up to that point -- and ''everyone'' pegged April as a robot just a few episodes earlier.]]
** Dawn's among the last to learn that she's only six months old.
** A long sequence in "The Replacement" follows "real" Xander watching Xander doing various errands and "hypnotizing" people. This convinces the "real" Xander (and the viewers) that the other Xander is a robot or demon. Eventually, "real" Xander discovers that he is Xander's weaker points, and the other Xander is Xander's stronger points. The coin he's using to "hypnotize" is merely a nickel he found squashed by a train that he plays with in idle moments.
* Played for laughs in ''Series/ChappellesShow'', which had a sketch featuring a rabid member of the KKK who's blind so he doesn't realize that he's black.
* ''Series/{{Charmed}}'': a group of mysterious beasts attack magical creatures during the ultra-rare second blue moon in a year. The Charmed Ones set up a trap to catch them... only to wake up and find themselves in the trap. Turns out the blue moon turned ''them'' into those beasts. It MakesJustAsMuchSenseInContext.
* ''Series/DoctorWho'':
** In [[Recap/DoctorWhoS29E8HumanNature "Human Nature"]]/[[Recap/DoctorWhoS29E9TheFamilyOfBlood "The Family of Blood"]], the Doctor turned himself into a human teacher in 1913, through use of a device called a Chameleon Arch, which looks like a pocket watch. Of course the viewer knows who he really is, but the Doctor doesn't and once he finds out he's pretty shocked and doesn't want to go back.
** The climax of [[Recap/DoctorWhoS29E11Utopia "Utopia"]] revolves round the revelation that the kindly human Professor Yana is, unbeknownst to him, the Tomato in the Mirror, a 'sleeper' personality and biological disguise created by the Doctor's archenemy the Master, previously thought dead. His original personality and biology is contained, thanks to some AppliedPhlebotinum, in a pocket watch, and released when Yana is tempted into opening the watch.
** [[Recap/DoctorWhoS30E11TurnLeft "Turn Left"]]: The time-beetle on Donna's back counts, considering that while the audience knew about it, Donna didn't, and anyone who stared at her back, knowing something invisible was there, was instantly met with Donna telling them off for acting so strange, only for her to find out there ''was'' something (horrifying, too) there.
** In [[Recap/DoctorWhoS30E14TheNextDoctor "The Next Doctor"]], the Doctor finds another person who claims to be the Doctor, who he takes to be a future version of himself. This other Doctor is investigating the place of a man who died. It turns out the new "Doctor" is the man who supposedly died -- he'd had info about the Doctor overwritten over his mind.
** [[Recap/DoctorWhoS31E3VictoryOfTheDaleks "Victory of the Daleks"]]: Professor Edwin Bracewell believes he is an Allied scientist who created a new form of unmanned weapon. He is actually an android, powered by what is effectively a bomb, created by the Daleks as part of their cover.
-->'''Bracewell:''' But I created you!\\
'''Dalek:''' [[foldercontrol]]

[[folder: No. It is ''we'' who created ''you!'' ]]

** In [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]], we get Rory and the Roman Legion, who are actually Autons.
*** At the end of the episode, the Doctor discovers that an alliance of all his historical opponents has joined forces to fight and imprison what they consider to be the most dangerous, monstrous and terrifying being to ever exist: him.
** In [[Recap/DoctorWhoS32E6TheAlmostPeople "The Almost People"]], we have Amy, who is in fact a Ganger avatar, with the real Amy in a medical-looking tube thing, and about to give birth.
** In [[Recap/DoctorWhoS33E1AsylumOfTheDaleks "Asylum of the Daleks"]], Oswin Oswald helps the Doctor from her crashed escape pod. When he finally reaches her, it turns out the Daleks had captured and converted her into a Dalek long ago. Her human body and escape pod were a delusion she used to forget what had happened.
** In [[Recap/DoctorWhoS33E10JourneyToTheCentreOfTheTARDIS "Journey to the Centre of the TARDIS"]], there is a [[SubvertedTrope subversion]] in Tricky, who is told by his superiors that he's an android. After he is proven to feel pain, the Doctor knows he is not only human, but the superiors' youngest biological brother. The brothers told him he was a robot after suffering a traumatic injury to [[{{Gaslighting}} gaslight]] him and get away with abusing him.
** Intentionally invoked by the 10th, 11th, and War Doctors in [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]]. The Doctors use a memory erasure beam to force the members of UNIT and the Zygons impersonating them to forget if they're human or Zygon. This forces them to negotiate a peace treaty fair to both sides because none of them (with the exception of the two Osgoods, who keep quiet) know whether it will turn out they were really human or the alien imposters when they get their memories back.
** [[Recap/DoctorWhoS36E6Extremis "Extremis"]]: Over the course of the episode, the Doctor, Bill and Nardole discover they aren't the real deal, but in fact simulants in a computer simulation created by the villainous Prophets of Truth in preparation for invading Earth. The simulated Doctor manages to get a warning to the real Doctor before the Prophets can shut him down.
** In [[Recap/DoctorWhoS36E12TheDoctorFalls "The Doctor Falls"]], Bill, who we last saw [[spoiler:converted to a Cyberman]], appears to be back to her old face, with only the chest unit that [[spoiler:she's gotten used to after ten years]] still remaining. Yet she's left out in a barn, and everyone acts afraid of her. It isn't until she literally sees herself in a mirror that we see [[spoiler:she's still a Cyberman physically, and we've only seen her as human because we're seeing her point of view]].
* ''{{Series/Dollhouse}}'':
** In the episode "Omega" we find out [[spoiler:that Dr. Saunders is actually a former Doll, Whiskey.]]
** Later, after seeing Senator Daniel Perrin investigating and campaigning into the Dollhouse, we find that Perrin's wife is [[spoiler:his handler, and he himself is a Doll. The whole purpose of his zealous investigation into Rossum Corporation's mind-wiping activities is so that he can discover evidence exonerating them at the end and place them above suspicion.]]
** PlayedForLaughs in a scene where a programmed Sierra (played by Creator/DichenLachman who is ethnic Tibetan on her mother's side) doesn't want to get her treatment from [[AsianAndNerdy Ivy]] because "I'm not comfortable with, uh, orientals."
* In the final episode of the short-lived series ''Do No Harm'', [[spoiler: Jason, who has spent the entire series trying to rid himself of his dubiously moral second persona, Ian- supposedly his long-dead twin brother- learns that, in fact, young Ian killed young Jason. HE is the double, invented by Ian. Worse, he learns this just as the doctor he thinks will be destroying Ian, but who has actually double-crossed him, injects him/Ian with a chip that will eliminate him forever. Cue "Goodbye Jason" and the end of the series.]]
* The ''Series/FearItself'' episode "New Year's Day". A young woman wakes up during a ZombieApocalypse and tries to get to her friend's apartment. At episode's end, [[spoiler:it's revealed she committed suicide the previous night and is now one of the zombies.]]
* The core premise of ''Series/{{Invasion}}''. Set in a small Florida coastal town, several characters return from unremembered experiences in the water feeling not quite themselves. At first they appear to have been altered by mysterious glowing creatures, who may or may not be aliens, in the water. But it's soon revealed that they are in fact altered copies, and their originals were killed in the duplication process. Since they have the same memories, emotions, and personality as their originals, it raises the issue of whether and why they should be considered a different person at all. Each of them, and their 'unaltered' friends and family, answers the question a little differently. Sadly, the series was canceled after one season, so this was never resolved.
* Weirdly inverted by Franchise/TheMuppets in the "Secrets of the Muppets" episode of ''Series/TheJimHensonHour''. You'd think the revelation that they are only puppets would shock the Muppets, but in fact they already know about it, and just find it intensely creepy (they avoid looking down and call anyone who uses "the P word" a traitor). But at the end they look and realize "There's nothing but floor down there!". Apparently they ''are'' real, which turns the rest of the episode into a bit of a MindScrew.
* ''Franchise/KamenRider'' loves this trope. If the monsters in the show have human guises (or in the case of [[Series/KamenRiderFaiz one show,]] ''were'' humans), a likely way to go about this is revealing one of the main character to one of them. Examples include:
** [[spoiler:[[Series/KamenRiderFaiz Takumi]] can use Faiz Rider Gear because he is the Wolf Orphenoch.]]
** [[spoiler:[[Series/KamenRiderBlade Hajime]] is the Joker Undead.]]
** [[spoiler:[[Series/KamenRiderKabuto Tsurugi]] is the Scorpion Worm.]]
** [[spoiler: [[Series/KamenRiderDecade Tsukasa]] is the Great Leader of Dai-Shocker.]]
** [[spoiler:[[Series/KamenRiderBuild Sento and Ryuuga]] are human Smash. Sento also has a different flavor in the revelation that he is Takumi Katsuragi, founder of Faust and creator of all its technology.]]
* In the ''Series/AlfredHitchcockPresents'' episode "Human Interest Story", a reporter interviews a man who has begun having delusions that he used to be a Martian. It turns out, he ''is'' a Martian, and is merely one of thousands of invaders. Fortunately, the reporter is also one, and he's able to silence him before he can blow their cover.
** It's actually an adaptation of a short story by Creator/FredricBrown, though the resolution there was nonviolent (the reporter, without blowing his own cover, simply convinces the other guy that acting out of character for his host will be to no one's benefit).
* In an episode of ''Series/OnceUponATime'' we follow the story of Red Riding Hood, whose grandmother is trying desperately to keep from seeing her boyfriend at night. Red becomes convinced that he is the Big Bad Wolf that is terrorizing the town, [[spoiler: when it is actually Red herself that's the werewolf, inherited from her mother, and Granny was trying to save the boyfriend's life.]]
* ''Series/TheOuterLimits1995'':
** "Birthright": A senator gets into a car crash and gets caught up in an alien plot to [[HostileTerraforming poison the atmosphere so humans will die and aliens take over]]. It turns out he was one of the aliens, who got amnesia from the crash so that only his implanted human memories remained.
** Several other episodes where people find out they are really robots, clones, etc.
* In ''Series/PowerRangersOperationOverdrive,'' a villain gives the HumongousMecha a virus, and it's spread to the base... and then to the Red Ranger, Mack, (aka [[FanNickname iMack]]) who turns out to be an android.
* In ''Series/PowerRangersTurbo'': Justin notes that the other Rangers are acting odd, and finds out that they are really robots. At the end of the episode, it's revealed that Justin himself was a robot, who was programmed so that he didn't know he was a robot, and that the real Ranger team built them to help Zordon on Eltar. Lot of good that did...
* ''Series/ThePrisoner'':
** Bizarrely enough, the MindScrew ending implies that this is the entire premise of the series.
** In the episode "The Schizoid Man", Number Six seems to have been mistaken for an agent trained to impersonate him. [[spoiler:Evidence mounts that in fact he is the impostor, and has forgotten his own identity. But in the end, the trope is subverted as he realizes that's what they want him to think.]]
* ''Series/{{QI}}'' gave us [[http://www.youtube.com/watch?v=ll_-VT1LusM this gem of an exchange]]:
-->'''Creator/EmmaThompson:''' You know the word [[{{Luvvies}} "luvvie"]]?\\
'''Creator/StephenFry:''' Yeah?\\
'''Emma:''' What do you all feel about it?\\
'''Stephen:''' ''[sigh]'' I mean, I'm not going to get as upset as some actors do -- some actors say, "We do a bloody hard job of work, we're serious people, you know, it's a coal face, doing a play! How dare they call us luvvies!" I think that's a bit overdone. On the other hand, it's a bit tedious when the ''Daily Mail'' says "luvvie couple XYZ", or something....\\
'''Emma:''' Do you know what the first citation of it is in the OED?\\
'''Stephen:''' No.\\
'''Emma:''' It's you.\\
''[cue MyGodWhatHaveIDone reaction from Stephen]''
* In one episode of ''Series/QuantumLeap'', Sam finds himself in the body of someone in a mansion where everyone thinks there's a vampire on the loose. After clearing up the situation, he finally gets around to looking in a mirror... and doesn't reflect. Literal Tomato "in the Mirror." This was hinted in the end of the previous episode, where we see the character Sam switched with actually had vampire fangs (played by Robert [=MacKenzie=], who bears a close resemblance to Creator/ChristopherLee).
* ''Series/RedDwarf'':
** This trope is played with in the episode "Out of Time", when Lister is apparently revealed to be a RidiculouslyHumanRobot. He is floored by the revelation, but gets no sympathy from Kryten, who points out that his emotions are only artificial. However, the moment the crew escapes the unreality pocket through which they were traveling at the time, he becomes human again. (In fact, as the other reality was false, he had never been anything but human.)
** Rimmer in various episodes. In "The Inquisitor", a copy of himself provides a [[TheReasonYouSuckSpeech Reason I Suck Speech]]; in "Terrorform", it's through a speech delivered by [[spoiler:a living version of his self-loathing]]; and in "Rimmerworld" he is marooned on a planet with only [[spoiler:his clones]] for company.
%%* ''Series/{{Salem}}'': Anne's a witch too.
* In an episode of ''Series/{{Sliders}}'', the world is populated almost entirely by androids, and one human [[MadScientist scientist]] who attempts to create an android with the transplanted memories of Quinn. It turns out that [[spoiler:the scientist actually died, and his memories have been transplanted into an android version of himself, without him actually knowing that.]]
* ''Series/StargateSG1'' did it at least three times:
** "Tin Man" (season 1): The SG-1 team seems to have been transferred into robot bodies by a lonely alien maintenance man. In the end, they find out that they weren't transferred, they were ''copied'', with the originals still alive.
** "Fragile Balance" (season 7): Jack O'Neill wakes up after an alien abduction to find himself in a body 30 years younger... and slowly dying. After convincing his colleagues of his identity and tracking down his abductor, he finds that he is actually a genetically damaged clone of the original O'Neill (still with the alien).
* ''Series/StargateAtlantis'' likes it even more:
** In "Michael" (Season 2), Lieutenant Michael Kenmore awakens in Atlantis' infirmary, unable to remember who he is. After being informed of who he is and that he barely survived terrible injuries from a raid deep in enemy territory, he is let out and undergoes psychiatric therapy (including periodic drug injections) for the strange nightmares he keeps having. He eventually discovers secret observation videos of himself in the infirmary, and is horrified to discover that he is actually a Wraith that was transformed into a human using an experimental genetic drug and then brainwashed.
** In "This Mortal Coil" (Season 4), Sheppard, [=McKay=], Ronon, Teyla, and, later, Dr. Weir find that they are replicator-made copies of themselves, and that the version of Atlantis they are in is also a copy. They come to take it remarkably well, especially [=McKay=]. Mostly because of [=McKay=]'s insight into the situation.
** In "The Kindred" (Season 4), Carson Beckett is found by the Team. The only problem: he's supposed to be dead. But he insists and is sure, that he is the real Beckett. Turns out he is a clone.
* ''Series/StarTrekTheOriginalSeries'':
** Happened in the episode "What Are Little Girls Made Of?" with Nurse Chapel's lost boyfriend.[[note]]In this case, the boyfriend knew all along that he's an android body containing the human's memories. What he ''doesn't'' realize until the end is that he's not "the same person", as demonstrated by his amoral and insane actions over the course of the episode.[[/note]]
** And with Rayna in "Requiem For Methuselah"
** Also happens to Kirk in "The Paradise Syndrome".
--->Behold the god who bleeds!
* ''Series/StarTrekTheNextGeneration'':
** Happens to a damaged, amnesiac Data in the episode "Thine Own Self" when Data takes up a life in a pre-industrial village. The reveal is obviously not a shock to the audience, but a big one to Data.
** The episode "Eye of the Beholder" plays with this trope in all sorts of ways. It turned out that telepath who had died during ''Enterprise's'' construction had left a sort of 'psychic residue' which had imposed the dead woman's memories on empathic crew members unfortunate enough to wander into its proximity (it had caused one such crewman to commit suicide). Troi at one point actually screams in horror when she doesn't recognize her own reflection.
* ''Series/StarTrekDeepSpaceNine'':
** "Whispers": We follow Miles O'Brien in flashback form as he seems to combat a station-wide conspiracy to sabotage peace talks amongst two alien factions; [[spoiler:turns out the O'Brien we're watching was actually a "replicant", sent by one of the alien factions and programmed to assassinate the leaders of the other faction. But the replicant O'Brien was too perfect and [[BecomingTheMask ended up acting just as the real one would.]]]]
** In the episode "Second Skin," Kira is kidnapped by the Cardassian Obsidian Order [[spoiler: as part of an anti-dissident setup]] and told she is actually Iliana Ghemor, a spy, who was implanted with false memories so even she would believe her cover story, sent to infiltrate the Bajoran resistance [[spoiler: subverted in that she is NOT Iliana Ghemor, but Iliana is a real person, who really did have false memories implanted so she could infiltrate the Bajoran resistance. It's all part of a trap to reveal that Iliana's father is part of the dissident movement as he decides to smuggle her off Cardassia when]] Kira's reaction is disbelief.
* ''Series/StarTrekVoyager'':
** In "Course: Oblivion", the entire crew realized that they were in fact not the real Voyager crew. Several episodes earlier, a semi-sentient, planet-spanning, not-quite-lifeform on an inhospitable planet they visited to refill on deuterium had replicated the entire crew. Unbeknownst to the original crew, they eventually copied the entire ship, too, right down to the last bulkhead. They forgot they were copies and made warp drive modifications that were harmful to themselves, so they raced back to Voyager hoping to get more genetic samples to save themselves. They failed to get back before disintegrating completely, [[ShootTheShaggyDog dissipating just before they could contact Voyager]].
** PlayedForLaughs when the holographic Doctor is singing a duet on the holodeck. The holographic diva starts complaining about his tempo. "It's like singing with a computer!"
* ''Series/{{Supernatural}}'':
** In "Road Kill", the MonsterOfTheWeek doesn't know she [[spoiler:actually is dead (and thus, a spirit haunting a stretch of highway)]] until the end of the episode.
** The MonsterOfTheWeek in "Heart" has no memory of her transformations into a werewolf, so she doesn't truly realize what she is until Sam traps her in her apartment and she awakens to see how she's torn the place up.
* In the ''Franchise/SuperSentai'' parody short [[http://www.youtube.com/watch?v=vD6gTrvuG0M "Rolling Bomber Special"]], Shingo Katori of {{SMAP}} fame plays the UnluckyEverydude who keeps getting attacked by the (fortunately very ineffective) Super Sentai "Freshmen", who think he's the destroyer of worlds they've been hunting all this while. It's not till he's 'activated' and [[BodyHorror robotic limbs start ripping out of his body]] that he realizes ''they were right''.
* The ''Series/{{Torchwood}}'' episode "Sleeper" has a seemingly human woman with a seemingly happy life (complete with job and husband) find out that she's actually an alien who will be "triggered" to wage a campaign of terror on Earth.
* ''Series/TheTwilightZone1959'':
** "After Hours": Marcia White's shopping trip to a department store goes awry, as the people she talks to seem to transform into mannequins. In the end, we find out that [[spoiler: she ''is'' a mannequin, whose month posing as a human is up; the others were concerned because she was late getting back.]] Also used in the '80s remake.
** Also the episode "Four O'Clock": A self-righteous man goes around telling anyone who will listen that at precisely four o'clock he will, by sheer force of will, cause every evil person on the planet Earth to shrink to two feet tall. Four o'clock rolls around and the man finds ''himself'' shrunk to a height of two feet tall, much to his chagrin.
*** Which implies that he has in fact succeeded in causing every evil person on Earth to shrink...
** "[[Recap/TheTwilightZoneS4E103InHisImage In His Image]]", after murdering a woman on the subway platform, Alan Talbot returns to his home town with his fiancée, but discovers that nothing is the way he remembers it. Then he discovers [[spoiler: that he is really a robot created 8 days prior, and all his memories were a fiction of his creator Walter Ryder, who wanted to build a more perfect version of himself.]]
** "Five Characters in Search of an Exit" is also an example. A clown, a hobo, a dancer, a bagpiper and a major wake in a prison with smooth walls and an open top. They speculate for a long time about where they could be and at one point the major calls the place "Hell" but at the end it is revealed that [[spoiler:they're all toys that are to be donated to the less fortunate children during the Christmas season. Their prison is a donation bin]].
* An episode of ''Series/TheXFiles'' about the Mandela Effect opens with a scene from an apparently non-existent ''Twilight Zone'' episode ([[spoiler: which eventually turns out to be a knock-off show called ''The Dusky Realm'']]) in which a man in a diner says there are Martians everywhere, but nobody seems to notice them, and says to the guy behind the counter that there's one standing at the window. The server tells him it's not a window, it's a mirror. [[MindScrew Then it gets weird]].

* Music/DanielJohnston's "Devil Town" from his album "1990" seems to be about this trope--''[='I didn't know they were vampires / It turns out I was a vampire myself...'=]'' That is, unless it's actually [[EveryoneIsJesusInPurgatory about something else entirely over some people's heads]].
* At the very end of the Music/{{Genesis}} ConceptAlbum[=/=]RockOpera ''Music/TheLambLiesDownOnBroadway'', the protagonist Rael discovers that [[spoiler:he and his brother John whom he's spent the entire album chasing]] are actually the same person.
-->Hang on, [[spoiler:John]]! We're out of this at last\\
Something's changed, it's not your face\\
It's ''mine''!
* ''Who Will Love Me Now?'' by Music/PJHarvey is a narrative song where the character sings of monster in the forest who has done terrible things, the monster lamenting 'who will love me now?' At the end of the song the character reveals ''they'' are the monster.
* This is played with in The Emptiness, by Alesana. Specifically, [[spoiler:The artist and thespian are one in the same.]]
* The video for Music/{{Garbage}}'s "Bleed Like Me". [[spoiler:Shirley Manson plays a nurse in a mental hospital; she eventually realizes that she's actually one of the patients.]]
* Sally Fingerett's song "She Won't Be Walking" is a song about domestic abuse. The chorus is positive and hopeful:
-->She won't be walking, when she goes\\
Won't be talking; they'll be nothing they don't already know\\
Are no magic words left to say\\
She'll be leaving him, flying away
** Then you find out that the reason she'll be flying instead of walking is because [[spoiler:she's a ghost. Her husband shoots her in the last verse.]]
* Music/BlackSabbath's "Iron Man" from ''Music/{{Paranoid}}'' combines this with StableTimeLoop as the title character becomes the OmnicidalManiac he went back in time to prevent.
* Music/{{Metallica}} has "Sad But True".
* The song "Haunted Town" by Music/{{Lordi}} starts when the singer finds himself in the middle of a ZombieApocalypse. In the end he realizes that [[AndThenJohnWasAZombie he's actually dead himself]]:
--> ''I searched the old graveyard for an answer''\\
''In the mossy headstones''\\
''I found my name''\\
''Ooh, I walk among the dead''

* The ''Radio/TorchwoodTheLostFiles'' story "The House of the Dead" does this on a massive scale. [[spoiler:The story is set after ''Children of Earth'', not before it as it first appeared, Ianto, the point-of-view character is a ghost, and the version of Gwen talking to him by radio is [[MissionControlIsOffItsMeds actually]] an EldritchAbomination impersonating her. Only Jack is the "real" version.]]

[[folder:Tabletop Games]]
* ''TabletopGame/ArkhamHorror'' has an expansion that adds Tomato in the Mirror as a mechanic. Roaming Innsmouth runs the risk of drawing Innsmouth Look cards and learning your investigator is a HalfHumanHybrid, mimicking the Lovecraft examples under Literature.
* ''TabletopGame/NewWorldOfDarkness'':
** This is a huge element of the [[ArtificialHuman fetches]] in ''TabletopGame/ChangelingTheLost''. They believe themselves to be ordinary humans, but they have the ability to see things others can't -- that is, the people on the street who look like monsters. At some point, the fetch usually finds out that it's not a real person; it's a copy made by one of TheFairFolk to serve as a replacement for the human they took to Faerie to serve as their plaything. Those "monsters" they're seeing? They're the people who managed to escape from Faerie in the first place. And a lot of them aren't big fans of something fake living their life...\\
The Changeling book also suggests this motif as a brilliant TwistEnding Prelude: [[spoiler:the players start going through life, noticing really weird things, scary critters just outside of the reach of their perception. Surprise! All the players are fetches, and the "evil creatures" are their real, changeling selves, come to finish them off.]]
** ''TabletopGame/WerewolfTheForsaken'' also has an element of this. What's that? You're just an ordinary person being stalked by werewolves, spirits and ghosts? No, you are a werewolf, and you always were one since birth - it's just been dormant. (The bite is so that they can track you down after you go through your violent First Change - it's not infectious, and the Change proceeds with or without the bite. A panic-stricken person post-Change might not realize this or be in the mood to listen to the explanation, so consumed with fear over being a monster.)
* In ''TabletopGame/{{Clue}}'' the winning player may discover that ''they'' are the one who killed Mr. Boddy, forcing them to declare that they killed Mr. Boddy - and can still lose if they get how and where wrong.
* Mimicking Creator/HPLovecraft's own writing, this sort of reveal may on occasion be sprung on player characters in ''TabletopGame/CallOfCthulhu'' scenarios, including several published ones -- at least one of which gives the GM staging tips on when and how to secretly replace the original human characters with initially unaware dopplegangers in such a fashion as to keep even the ''players'' running them at the time ignorant of the switch.
* Meta example: One of several ways for ''TabletopGame/DungeonsAndDragons'' [=DMs=] to handle doppelganger infiltration into a party of [=PCs=] is to not inform the player they've been replaced until it's time for TheReveal. Needless to say, this isn't a very popular option with players, although they're a lot less miffed if their character is only knocked out and tied up by the shapeshifting monster off-camera, ''not'' actually killed.
* [[AntiChrist Archaeon the Everchosen]] from ''TabletopGame/{{Warhammer}}''; the bastard son of a Norscan Raider, Diedrick Kastner grew up to be a Witch Hunter and a devout servant of Sigmar. One day he read about a prophesied Chaos Lord who would destroy the world, and his search to find out who this mysterious "Archaeon" was drove him further and further to the brink. Finally, he confronted an Arch Lector who stated that Diedrick himself would become Archaeon. Diedrick snapped, killed the Lector, and fled to the north, where he embraced his destiny and became one of the most feared Warriors of Chaos.

[[folder:Video Games]]
* One of the earliest examples in video games is ''VideoGame/FinalFantasyVII'': Cloud, the protagonist, suffers from freaky headaches and weird disjointed flashbacks. It then transpires that he is a "[[CloningBlues clone]]" or "copy" of the villain, Sephiroth, and has been acting under Sephiroth's MindControl for the game so far. Even more confusingly, when he recovers from his HeroicBSOD, he realizes he was never a clone to begin with (what he really is, is quite complicated, but it involves the way the SuperSoldiers are created, and how TheVirus contains the [[GeneticMemory genetic memories]] of those infected). Then a big reveal occurs where it is eventually revealed that [[spoiler:much of his memories were not his own, but were in fact partly borrowed from that of his dead best friend Zack.]] When he finally regains his [[FakeMemories true memories]], he finally [[CharacterDevelopment develops]] into a fully fledged person.
* ''VideoGame/MetalGearSolid'': Solid Snake goes into Shadow Moses Island to rescue two hostages, and stop terrorist leader Liquid Snake from launching a nuclear strike. The hostages he's meant to rescue keep having heart attacks, and Meryl claims he looks just like Liquid. Snake then discovers that [[spoiler:both he and Liquid are clones of Big Boss, and that he's been used as a vector for the FOXDIE assassination virus.]]
** Liquid has a second later of ketchupy goodness rendering himself a double tomato, though he never finds out personally. He knows he's a clone, but thinks that he's the inferior genetic specimen while Solid got all the good gene goo in the course of their creation.
** If anything, Raiden in ''[[VideoGame/MetalGearSolid2SonsOfLiberty Sons of Liberty]]'' is an even bigger tomato than Snake. [[spoiler:A former ChildSoldier who suppresses his traumatic memories,]] he goes through all kinds of virtual reality training reenactments of Snake's best missions, [[spoiler:and his mission in the Big Shell was modelled right off of the Shadow Moses mission.]] His relationship to the game's BigBad, Solidus Snake, closely resembles the one between Solid Snake and Big Boss, [[spoiler:and the entire mission was meant to be an experiment to transform Raiden into the spitting image of Solid Snake himself as well as a social experiment in giving The Patriots control over all digital information.]] To say that Raiden was an UnwittingPawn by this point would be a grand understatement.
** ''VideoGame/MetalGearSolidVThePhantomPain'' Big Boss wakes up from his nine year coma only to escape a hospital under attack with the help of a mysterious man named [[Literature/MobyDick Ishmael]] [[spoiler: In the secret ending, you discover that the character you have been playing is a body double of Big Boss, and his best soldier from MSF. Ishmael was the original Big Boss, who left in order to begin creation of [[VideoGame/MetalGear1 Outer Heaven.]] ]]
* ''VideoGame/TheForceUnleashed II'' is all about Galen Marek aka [[AwesomeMcCoolName Starkiller]] trying to find out whether or not he's the original Starkiller or a clone. Turns out [[spoiler:he never does get an answer.]]
* ''VideoGame/{{Killer 7}}'': Thought the Killer 7 were ''Harman's'' split personalities? Nope. [[spoiler:They're Garcian's.]]
* The last level of ''VideoGame/{{Braid}}'' has Tim running a deadly gauntlet, with the Princess following above, disabling traps and opening doors. He reaches the end and [[spoiler:rewinds time, revealing the truth: she was ''setting'' traps and ''closing'' doors, trying to keep him away.]]
** In the extra stories the player can follow when they go into levels and get to the end of the game [[spoiler: reveals that the woman in the stories (or the princess) is a metaphor for the atomic bomb.]]
* In ''VideoGame/{{Klonoa}} 1'', [[spoiler:Klonoa himself turns out to be from an alternate reality at the end.]]
* In the true route in ''VisualNovel/{{Ever 17}}'', the amnesiac Kid looks himself in a mirror and realizes that [[spoiler:he is not the same Kid seen in Takeshi's perspective.]] In fact, [[spoiler:he isn't even the Kid he sees in the mirror. He is the reader.]]
* In the flash game "Trapped" you believe you are Benjamin Greunbaum, the owner of the hotel you're in which is under siege by a group of robbers. This impression is based on finding a wallet with that name in it. Turns out, you're actually [[spoiler:Dan Mcneally, the guy in charge of the robbers, hit with a sudden and unexplained case of amnesia. Greunbaum is in the ventilation shaft... well, his body anyway.]]
** The sequel "Escape" has Dialla [[spoiler:told that she was once the leader of the Armored Gamses, the very gang she and her partner were trying to take down. Also she and Dan were a couple.]]
* In the original Japanese version of ''StreetFighter 2010'' (not the American localization that claims the protagonist is Ken Masters), Kevin Straker is [[spoiler:one of the very "Parasites" he was sent to destroy. It was all part of Dr. Jose's master plan to use him to conquer the universe...which promptly fails when Kevin kills him.]]
* Subverted in ''VideoGame/MegaManZero 3.'' Zero doesn't care that he's the clone. Zero doesn't care about how the AxCrazy OmnicidalManiac FinalBoss is the original Zero driven insane. All he sees is an enemy who needs to be taken down.
** Clone Zero is the '''real''' Zero, his "heart and soul" transferred to the clone body. Omega, original body or not, is one entirely different person.
-->'''Mega Man X:''' The heart is what counts. Not the body...
** This is echoed in ''VideoGame/MegaManZX Advent''. Grey has spent enough time fighting for his life against Maverick Mechaniloids, Pseudoroids, five other Mega Men, and both Prometheus and Pandora that when he finally learned that [[spoiler:he is actually Master Albert's backup body and Model A a recording of his data and powers]], he stopped giving a damn about who he originally was. That one of the Mega Men in question was Aile certainly helped him stop caring about his predetermined identity.
* In ''VideoGame/FinalFantasyX'', Tidus discovers that [[spoiler:he and his civilization don't really exist. They did exist at one point, but they were obliterated in a war with Bevelle. Now they're just all part of a dream being generated by the survivors of that civilization, which are now a gestalt of magical naked people trapped in a mountainside. No. Really.]]
* ''VideoGame/HellNight'' [[spoiler:The player turns out to be the Dark Messiah, not only explaining why they were chased by the Cult, but also the kidnappings. And why the train was wrecked by the monster.]]
* The ''Franchise/KingdomHearts'' series has several:
** In ''VideoGame/KingdomHeartsI'', the protagonist Sora travels through the worlds attempting to find his friends Riku, who has joined the villain side, and Kairi, who has lost her heart. He suspects that Riku did that to Kairi, despite the latter's denial. Then it's revealed in the DiscOneFinalDungeon that [[spoiler: Kairi's heart has been residing inside Sora all along ever since the destruction of their home world, and opening up the final keyhole means that [[HeroicSacrifice Sora will have to release both his and her hearts.]]]] It's foreshadowed since early in the game, what with Sora seeing Kairi's apparitions here and there, resulting from [[spoiler: her heart resonating inside him]].
** ''VideoGame/KingdomHeartsII'', Roxas starts seeing mysterious people that no one else seems to notice. He eventually discovers that [[spoiler: the Twilight Town he's been living in [[LotusEaterMachine is a fabrication]], and that he himself is a "Nobody" of the main character, Sora.]]
** And then there's Xion in ''VideoGame/KingdomHearts358DaysOver2'', who realizes [[spoiler:that she's never a Nobody; she's an imperfect ''replica'' of Sora created as a fail safe should Roxas ever fail in his part as Sora's Nobody. Her existence disrupts Sora's memory restoration, thus either she or Roxas has to die so the restoration can proceed. When the BigBad forces her to absorb Roxas, she [[SuicideByCop gets him to attack her]] so she can stop the BigBad's EvilPlan]].
* In ''VIdeoGame/KnightsOfTheOldRepublic,'' the protagonist [[spoiler:is revealed to be the "late" Dark Lord of the Sith, Darth Revan.]]
** And in [[VideoGame/KnightsOfTheOldRepublicIITheSithLords the sequel]], when the Jedi masters explain to you that you are a [[spoiler:hole in the Force that feeds of the life energy of everyone you come into contact with/kill.]]
* A little over halfway through ''VideoGame/{{BioShock|1}}'', the protagonist learns [[spoiler:he's a genetically altered assassin, [[LukeIAmYourFather Andrew Ryan's secret love-child given rapid aging to maturity]], and smuggled out of Rapture as a pawn in mobster Fontaine's [[GambitRoulette complicated scheme]] to kill Ryan and take over the city.]]
** The Minerva's Den DLC from ''VideoGame/{{BioShock 2}}'' ends with [[spoiler:Alpha Series Sigma discovering that he is really Porter, who had been framed by Wahl and sent to Persephone, and the "Porter" who had been helping him was really the Thinker.]]
** ''VideoGame/BioShockInfinite'' utilizes this trope as well, considering that [[spoiler:Comstock]] is really [[spoiler:Booker [=DeWitt=]]] from an alternate timeline where he was baptized after the Battle of Wounded Knee and began his descent into darkness.
*** [[spoiler: And the DLC plays this trope ''completely'' straight, with the end of part 1 revealing that you've been playing as Comstock the whole time.]]
* The short interactive fiction [[http://zmpp.sourceforge.net/games/index.html 9:05]] revolves around this concept. Hints to your real identity include [[spoiler:the lack of a stereo or TV in the main room, and the broken lock on the front door]]. It turns out [[spoiler:this isn't your house, that isn't your boss on the phone, and you stashed Hadley's body under the bed]].
* ''VideoGame/CityOfVillains'' has a story arc where the player character uncovers clues that they are in fact robotic duplicates made by [[TheChessmaster Nemesis]]. Subverted by the final mission, which explicitly states that the player character is the original, but the ''contact'' who sent them on the missions is the robotic duplicate (with the real one alive but captive).
* ''VideoGame/LegacyOfKain'' character Raziel's story is a long string of this. Over the course of the three games he appears in, [[spoiler:he starts off as a re-resurrected vampire, only to find out that the vampires are a world-destroying evil that he must personally weed out]]. Then, it is revealed to him that [[spoiler:he used to be a high-ranking Sarafan vampire hunter before he was a vampire]]. In part II, TimeTravel hijinks lead to the discovery that [[spoiler:the original vampires weren't so bad at all]]. Then he finds the last survivor of the original, ancient vampire race, the only one who can give him the answers he seeks, [[spoiler:brutally and mercilessly slaughtered... by Raziel's own, past Sarafan self. [[StableTimeLoop Whom Raziel later KILLS along with his fellow Sarafan, indirectly preparing his own vampiric resurrection as well as his brethren]]'s]]. As if this wasn't enough, just moments later, he comes to the startling realization that [[spoiler:the symbiotic, semi-sentient, insane wraith blade that he's been carrying for two games is [[StableTimeLoop the future version of his own soul]]]]. Finally, he learns that [[spoiler:he is the [[TheChosenOne foretold messiah of the vampire race]]. No, wait -- he's the messiah of the Hylden, whom he thought he's supposed to kill. No, wait, ''he's both at once''. Turns out that [[PropheticFallacy the prophecies weren't all that clear on this]].]]
** Even before that, there was Kain's dilemma: Originally lead to believe that by killing the mythic Circle of Nine he could be released from his vampyric unlife, he eventually learns that [[spoiler:he is, in fact, one of its members, the reincarnated guardian of the Pillar of Balance, and his liberation from vampirism may only come in death.]]
*** Gets better. In Defiance, Raziel [[spoiler:rips out Kain's heart, saying "I have found the Heart of Darkness!". Janos' heart, which was pulled from the vampire by Sarafan Raziel, was inside Kain all along. Kain was unaware of this fact.]]
* In ''VideoGame/LuminousArc3'' Levi discovered that [[spoiler:he is the clone of the man antagonist, [[GodIsEvil the God]] but is said by his companion that the thing that matter is Levi's heart is human.]]
* Subverted in ''VideoGame/DeusEx'', in which protagonist JC Denton is informed that [[spoiler:both he and his "brother" are actually artificial life forms. Rather than reacting with shock, angst, or an unconvincing identity crisis, JC calmly takes the revelation into stride, and remarks that he had considered the possibility in the past. His ''artificially constructed memories of the past'', that is.]]
** One of the few discrepancies in ''Deus Ex'' is JC's history. In one version [[spoiler:he was cloned and artificially aged, being about six months to a year old during the game.]] In the other, [[spoiler:he was genetically engineered but was raised in Switzerland.]] Both of these versions are supported by information from characters who knew The Truth in the form of email archives, statements, and physical evidence within The Conspiracy. [[spoiler:In the final area, JC first guns down the man who killed his father, then sees his cloning tank, and the one that is growing his younger sibling, Alex D.]] To address these issues the DX team created the [[http://archive.gamespy.com/articles/april02/dxbible/ Deus Ex Continuity Bible]] with the issue at hand explained [[http://archive.gamespy.com/articles/april02/dxbible/dx1/index3.shtm here]]. Needless to say, the site contains massive spoilers.
* ''Franchise/SonicTheHedgehog'':
** In Team Dark's ending in ''VideoGame/SonicHeroes'', Rouge discovers [[spoiler:hundreds upon ''hundreds'' of copies of Shadow in tubes identical to the one he was in at the start of the game. It matters little, though -- once he's over the shock, he decides that original or not, he's still ''the'' Shadow the Hedgehog]]. This is followed up on in one of the multiple endings of ''VideoGame/ShadowTheHedgehog'', with Eggman admitting that [[spoiler:Shadow is one of the copies. He gets over it instantly, kills Eggman and takes over the world.]]
** In the canon ending of ''Shadow the Hedgehog'', [[spoiler:Eggman tells Shadow he is the original, and he found him after he fell to earth and put him into a capsule to let him heal.]]
** The canon ending to ''Shadow the Hedgehog'' also has a completely separate Tomato in the Mirror twist: [[spoiler:Shadow was created from [[BigBad Black Doom]]'s blood, making him at least partially a Black Arm.]]
* ''VideoGame/TheWorldEndsWithYou'' pulls this twice: first you find out [[spoiler:everyone playing the Reapers' Game is dead and trying for a new chance at life]], and then it turns out that [[spoiler:Shiki traded her appearance to play the game, and always appeared as her friend Eri.]]
** Joshua. He [[spoiler:killed you. [[StabTheScorpion No he didn't, Sho did]]. No wait, [[SubvertedTrope yes, he killed you]] so that you could be his proxy for the game. And he's God.]] This is after the sudden revelation that [[spoiler:Joshua has been alive the whole time]].
* In ''VideoGame/MaxPayne2TheFallOfMaxPayne'', [[spoiler:the [[ShowWithinAShow show within a game]] ''Address Unknown'' ends like this: The protagonist, John Mirra, who spent the entire show looking for the murderers of his family, realizes that he himself was the killer after he sees the killer's face staring back at him in a bathroom mirror. This, incidentally, may mean the whole purpose of the show was to set up a truly terrible pun: the main character is named John Mirra, and he solves the mystery in the bathroom (as in, the john) by looking into the mirror....]]
** That show (and the finale described above) were a long {{homage}} to ''Series/TwinPeaks''.
* In ''VideoGame/{{Xenogears}}'' when Fei finds out that [[spoiler:his father is really the new body of Grahf, and also Wiseman is his father as well.]]
** Not only that, but he also discovers that [[spoiler:he is the OmnicidalManiac ID, while his current amnesiac personality was artificially made after he committed a genocide.]] Then he discovers [[spoiler:or should we say [[GeneticMemory remember]] that he became crazy because his mother was [[TheManBehindTheMan Miang]] and made a lot of gruesome and painful experiments on him]] Then, we learn that [[spoiler:Grahf and Fei are actually the same person, in two different bodies, and that 500 years ago, he was the lover of the game's world equivalant of the pope who made a HeroicSacrifice for him, causing Lacan (Fei's name at the time) to become the immortal Grahf while his original personality kept reincarnating]]. If this was not enough, Fei later learns that [[spoiler:he is the ancestor of every inhabitant of the world, which he was not supposed to be, that free will exists thanks to him, and that he '''created''' his soul mate 10.000 years ago as a child because he felt a need of protection while he was linked to [[KingOfAllCosmos The Wave Existence]], which gave him the power to [[RealityWarper wish his feelings into reality]], and that all of it makes him basically the TheAntichrist, except that here, TheAntichrist is the [[AntiAntiChrist ''good'' guy]] ]]. Fei is not a case of Tomato in the Mirror, he is [[spoiler:The tomato, the mirror, the frame of the mirror, the room in which the tomato and the mirror are, and the architect of all of this actually wants to be killed by him]]
* In ''VideoGame/WildArms1'', [[spoiler:Rudy has his arm severed and when his friends try to heal him they discover that he is not human, but an [[ArtificialHuman artificial life form]] created as a weapon, and his body is biologically similar to the demons they are fighting.]]
** Something similar happens to [[spoiler:Jet of ''VideoGame/WildARMs3'' when he finds out he is not actually Dr. Enduro's son, but actually an ArtificialHuman created to interface with the Yggdrasil System.]]
* In ''VideoGame/CastlevaniaAriaOfSorrow'' Dracula is KilledOffForReal before the start of the game. Its main villain claims to be Dracula's reincarnation. He's not, [[spoiler:the mysterious power possessed by the main character, Soma Cruz is Dracula's power, and Soma is Dracula reincarnated. Cue EnemyWithin.]]
* As if Konami can't stop recycling the plot enough, a similar theme appears in ''Neo {{VideoGame/Contra}}'' when [[spoiler:protagonist Bill Rizer meet with the "real" Bill Rizer, A.K.A. Master Contra. The BigBad reveals that both of you were part of a program called "Project C" in an effort to stop global warfare, and thus was cloned from the concious of a legendary soldier.]] Considering how the game pokes fun at the Contra series and its sillier bits, it is probably an intentional jab at That Other Series From Konami.
* ''[[VideoGame/{{Stalker}} S.T.A.L.K.E.R. Shadow of Chernobyl]]'': [[spoiler:You wake up at the start of the game with no memories and a single note in your PDA saying "Kill Strelok. Turns out you were captured and brainwashed by C-Consciousness and given the objective to kill Strelok, C-Consciousness having thought you had actually escaped when your original foray into the power plant failed.]] [[spoiler:You were Strelok all along.]] This turns out to be an odd example of the antagonists being brought down (at least, if you pick that ending) by their own competence.
* ''VisualNovel/{{Snatcher}}'' pulls this off rather beautifully. So, Gillian Seed is a [[Film/BladeRunner Deckard]] {{Expy}} working for an organization hunting down Snatchers, robots that look like humans. Also, you and your wife have amnesia and can't remember anything about your past. Well, it's quite obvious that [[spoiler:You and your wife are amnesiac Snatchers]] Except... [[spoiler:Actually, neither of you are. You invented the Snatchers 50 years ago and were cryogenically stored.]] Creator/HideoKojima is so good a writer even the GenreSavvy are left in surprise. There are about 5 other {{Tomato Surprise}}s that are subverted in the very same game too.
* In ''VideoGame/{{Folklore}}'', your two protagonists are an amnesiac MysteriousWaif named Ellen and an IntrepidReporter named Keats. Ellen naturally gets freaked out at first by the supernatural discoveries she makes, while Keats takes it all remarkably in stride, mostly because he dismisses a lot of it as unreal and simply plays along to get to the truth. Their being drawn to the same location and chain of events appears to be related only by the person who called them. [[spoiler:In reality, Keats is a Halflife, ghost-like beings that the player has interacted with the entire game, which are created by the strong wish of a human - in this case, Ellen's childhood friend Herve, whose dying wish was to protect her. Keats looks human because his appearance is taken from a drawing Ellen made of what she thought Herve would look like when he grew up; he's a reporter only because Herve wanted to be one, and the magazine he writes for (which Herve was a fan of) went out of business in the late '80s. The "office" the player sees Keats in at the beginning of the game is in fact another realm in the Netherworld. And he's part of the story because the whole chain of events 17 years ago is what created him.]]
* ''VideoGame/TalesOfSymphoniaDawnOfTheNewWorld'' features Emil, a cowardly teen who is given the ability to channel incredible power from the dormant spirit Ratatosk in order to protect Marta, who seeks to awaken the spirit himself from the core she carries and restore his power. Over the course of the game, Emil's recollection of certain major events is spotty, and many people in his hometown of Palmacosta, from which he left six months prior, know his name but don't recognize his face, much to his annoyance. Eventually it comes to light that [[spoiler:Emil has not been channeling Ratatosk's power; he himself is Ratatosk, and the moments when he gains power to fight are him using his true abilities. Contrary to everyone's belief, Ratatosk had been awake for months, but was incredibly weak. In order to hide his true identity as he recovered, he created a fake persona using the appearance of a boy he'd killed named Aster. The fake was designed to quickly fill in the gaps of its memory; during the mass murder in Palmacosta six months prior, a women named Lana, blinded by her injuries, mistook Ratatosk for her son, Emil, and so the false persona came to believe it was Emil. No one in Palmacosta recognizes him because while there was once an Emil Castagnier there, this one looks completely different. The real Emil is implied to be dead, murdered at the same time as his parents. Furthermore, the core Marta has is a fake, designed to make her a target for those who seek to kill Ratatosk before he regains his full power.]]
* In ''VideoGame/Persona2: Eternal Punishment'', [[spoiler:The Sumaru City in which Maya and company live in is one big mirror, the denizens of the city (except Tatsuya) are pretty much tomatoes. In the "real world" (what Joker calls "the Other Side"), Maya was killed with the Spear of Longinus in ''Innocent Sin'' by Maya Okamura, and in having that happen, the world is destroyed, with the exception of Sumaru City. Stricken with grief over her death, Tatsuya and his friends demanded Philemon to do something about it. Philemon agrees to bring her back, but in the alternate world where EP takes place, but with a price--everyone must forget Maya and the friendship they shared. Everyone gives up their memory, but during the process Tatsuya out and out refused to forget Maya and through sheer force of will he ends up in EP's Sumaru with all his memories intact, causing a paradox. The Maya in this world runs across him and feels a strange déjà vu vibe from him, as well as pain in her side, where she had been stabbed in Innocent Sin.]]
* In ''VideoGame/{{Persona 4}}'', [[spoiler:Teddie realizes he was a Shadow all along.]] Unlike most examples, the main characters (save for said character) were not terribly surprised by this, and took it in-stride.
* The extent to which this trope applies in ''VideoGame/DigitalDevilSaga'' is certainly arguable, but it probably applies when Serph [[spoiler:realizes that he was created as a virtual AI doll version of someone who was experimenting on one of his comrades when she was ''two years old''. Oh, and his spirit's still around and affecting him.]]
* Ihe Cybran Campaign of ''VideoGame/SupremeCommander''. Dr. Brackman, creator of the Symbionts, calls all Symbionts "his children" and refers to the player as "my boy". The debriefing at the end of the campaign reveals that [[spoiler:He's being literal about the son thing - you are his clone.]]
* ''VideoGame/TalesOfTheAbyss'' gives us Luke fon Fabre, a [[JerkAss spoiled rich kid]] who's been shut-in at his mansion for seven years until the start of the story due to a kidnapping incident which [[TraumaInducedAmnesia shocked him into losing his memory]]. He soon goes on to find out that he's supposed to be the [[TheChosenOne the world's savior]], and continues to give everyone grief about how special he is. [[spoiler:Cue the traditional Tales series megatwist, where he discovers that he's suddenly become a mass murderer, his beloved sword instructor set him up, all his friends are tired of his crap and to top it all off, he's the clone of the REAL Luke fon Fabre, who's been spending the last seven years trying to stop Van by [[ReverseMole working on the inside]].]]
* ''VideoGame/StarOceanTillTheEndOfTime'': [[spoiler:The entire universe that Fayt and everyone else inhabits is an MMORPG created for the amusement of 4D beings, called the ''Eternal Sphere''. And the creator of the game has decreed that all "bad" data must be deleted as he felt that the Eternal Sphere's inhabitants have grown to be too sentient, with technology that almost matches that of the "real" 4D dimension]].
* Tomato-In-The-Mirror reveals have become a staple of ''Franchise/SilentHill'' games since ''VideoGame/SilentHill2'', in which James realizes that he [[spoiler:killed his wife.]]
** Especially prevalent, and beautifully done, in ''VideoGame/SilentHillShatteredMemories''. The basic premise of the game centers on the main character Harry Mason searching for his lost daughter Cheryl after a car accident. The bulk of the game is a mix of exploration and action (in the form of running your ass off from the demented creatures chasing you,) with bouts of psychotherapy interposed between segments.[[spoiler:The obvious conclusion (considering Harry can't seem to die) is that in the narrative of the game follows Harry [[AnachronicOrder recounting]] his traumatic experiences to his therapist. However, in the course of the adventure through the town, you eventually find yourself at the office of a psychologist, and you go inside to discover the therapy sessions were happening ''concurrently'' with the gameplay. The patient turns out to actually be Harry's daughter, who is now somewhere in her 20s, and the Harry Mason the player has been playing is simply a delusion in Cheryl's mind. As the game eloquently puts it, you're 'not even a ghost'. And depending on your interpretation, it's ambiguous as to whether ''everything'' in the game was in Cheryl's mind or if her delusions were simply being physically manifested in the real town.]]
* ''VideoGame/FatalFrame'':
** ''[[VideoGame/FatalFrameIICrimsonButterfly Crimson Butterfly]]'': Minakami Village's ritual involves twins, with the older one having to kill the younger one to be thrown into the Abyss and prevent the Repentance from occuring. When Mayu and Mio get lost in the village, Mayu gets possessed by a spirit and plans to go through the ritual with Mio. While wanting to save her older sister from possession, Mio is now in danger of being killed by her, too. The penultimate chapter reveals a note that mentions the village having an extremely out-dated way of 'counting' twins. They believed that the last-born twin was the older one, as they would 'allow' the younger sibling to be born first. ''Mio'' is supposed to be the one to kill ''Mayu'', not the other way around.
** ''[[VideoGame/FatalFrameIVMaskOfTheLunarEclipse Mask Of The Lunar Eclipse]]'': Choushiro Kirishima is on Rougetsu Island and intent on finally confronting Yuu Haibara, the man who kidnapped five girls to help him perform a strange ritual, and bringing him to justice. As he runs after Haibara all over the island, he ends up cornering him on top of a roof and gets stabbed in the stomach by him. Kirishima tackles Haibara and both go over the railing. And Kirishima looks back down at his own body, back in the very spot he initially awoke and had no idea how he got there. He's one of the ghosts stuck on the island, having died in its tragedy eight years ago.
* In VideoGame/SuperRobotWars: VideoGame/EndlessFrontier it's revealed that [[spoiler:Haken Browning]] is W00, a genetically engineered human made by a project which tried to create the perfect soldier. It causes some worries, but it's fairly short-term. He's in a group consisting of a smart-mouthed android with a split personality, a second android with cat-ears and like-wise split personality, a 2000+ year old UsefulNotes/{{pettanko}} oni princess, another princess who's as top-heavy as her sword and a chinese fox-spirit who cracks more sexually slanted jokes than you can shake a sword-cane at. And the other guy was in a group even crazier than this one.
* ''VideoGame/BatenKaitosOrigins'' plays this in a really [[WhamEpisode interesting and powerful manner]]: [[spoiler:''you're'' the tomato. Yes, you, the player...well, in a sense.]] That strange world that Sagi keeps getting sent to, where a bunch of people keep calling him Marno? [[spoiler:That's you. You're actually playing the role of Marno's spirit, not a nameless Guardian Spirit...oh, and by the way, Marno is one-fifth of the EldritchAbomination Malpercio. Yup, you're part of the dark god that helped ravage the world a millennium ago and is the final boss of the first, chronologically-second, ''VideoGame/BatenKaitos''. Don't you feel special?]]
* In ''VideoGame/{{Prototype}}'', Alex Mercer had extremely mixed feelings when [[spoiler:he discovered that he was the Blacklight Virus, while Alex Mercer was the person who released it on New York and was its first meal. Especially since the real Mercer was worse than the virus itself.]]
-->'''[[spoiler:Alex Mercer]]:''' [[spoiler:I'm not human. The revelation...it freed me. It killed me. I'm not human. *uneasy chuckle* Alex is just the role I play. Part of me was relieved...and part of me died. Just another disguise, right? So ingrained...so real...even I believe it.]]
* ''VideoGame/SecondSight''. [[spoiler:It turns out that the main character isn't a lab escapee having flashbacks to a time just before it all went wrong, he's in that time and having precognitive visions on the verge of a BadFuture. One of the very few surprise twists where the character turns out to be himself.]]
* In ''VideoGame/{{Disgaea 2|CursedMemories}}'', it is heavily implied that [[spoiler:Adell is actually a demon himself by birth. He'll keep saying he's human because he isn't told this in the main story, but it's pretty obvious to the player.]]
** Disgaea 2 has another example in that [[spoiler:Rozalin is actually the overlord Zenon, reincarnating herself for fear of her own power.]]
* ''VideoGame/PhantomDust'' has the amnesic main character searching for clues of his and everyone else's lost memories in the post-apocalyptic, ghoul-filled world. It is revealed to him by his friend, Edgar, that [[spoiler:the protagonist, along with everyone else in the world save Edgar, are fabrications created by Edgar from the dust to help him overcome his loneliness when he returned from space to find Earth a complete, lifeless wasteland.]] When the protagonist beats the final boss it is further revealed that [[spoiler:the Edgar you've known throughout the game is himself a fabrication, having been created by the original Edgar to watch over things after his death.]]
* ''VideoGame/Phantasmagoria2: A Puzzle of Flesh'' has this as its big endgame twist: Over the course of the game, the player character Curtis is haunted by insane visions, compounded with his own guilt over presumably causing his mother to hate him and eventually commit suicide, as various people he doesn't like around his office at Wyntech are being killed off. As Curtis investigates deeper into Wyntech's past, he discovers that the company used to dabble in experimenting with transdimensional portals, his father was involved in their projects, and Curtis himself was used as a guinea pig. The final reveal is that [[spoiler:Curtis, who you've just spent the entire game playing as, is in fact an alien duplicate: The '''real''' Curtis never left the alien dimension, and has mutated and developed psychic powers to torment the clone Curtis with past dimensional barriers.]]
* In ''VideoGame/LufiaAndTheFortressOfDoom'' there is a twist towards the end where it is revealed [[spoiler:that Lufia is really Erim, the sinistral of death.]]
* The big Tomato Surprise in ''VideoGame/SoulNomadAndTheWorldEaters'' revolves around the titular creatures - extradimensional entities cast between worlds by the various gods. [[spoiler:The notable one out of them - and the one that applies to this trope the most - is '''Revya''', a Drazilian shell injected with the soul of Median's dead son after 200 years of nurturing by Haephnes as her and Virtuous' part in the GambitPileup. Human!Layna gives you the breakdown once you cross over to Drazil proper.]]
* ''VideoGame/GhostTrick'': Sissel spends the entire evening hunting down clues to who he was before his demise. [[spoiler:At first, he assumes himself to be the blond man in the red suit seen on the game's cover. He spends the majority of the game using this persona until he discovers that the man in red is alive (kind of) and reverts back to a wisp. He all but gives up hope on finding his identity until the person whose face he was borrowing eventually reveals that Sissel was his cat. Major clues for this revelation include Sissel's limited understanding of human technology and complete inability to read.]]
* ''VideoGame/TheWhiteChamber'' ends with the revelation that Sarah has murdered her entire crew. At this point, her ending fate is already sealed by in-game choices.
* In a literal in-the-mirror moment at the end of ''VideoGame/TheSeventhGuest'', Ego, the player character, is revealed to be Tad, the titular seventh guest.
* A similar literal example shows up just a few minutes into ''VideoGame/{{Obsidian}}''. The reflective surface of the titular Obsidian structure reveals that the player is in fact, Lilah Kerlins, one of the creators of the Ceres Project. This can be even more jarring if you [[spoiler: read all the info in her PDA first, and then heard Max screaming for help.]] After all, how else would the PDA have been able to pass you in on its retinal scan?
* In ''VideoGame/ArcTheLad: Twilight of the Spirits'', Kharg discovers that he is a human/demos hybrid.
* ''VideoGame/BaldursGate'' has the protagonist on the run, trying to figure out why everyone wants them dead. The discovery of [[DeadManWriting a letter]] left by their adopted father reveals that they're a Bhaalspawn, a child of the Lord of Murder, and destined to rain destruction on the world.
** This is reinforced (and in one case foreshadowed) when some of the PlayerCharacter's dreams has them looking in a reflective surface and seeing themselves with the same BlackEyesOfEvil Bhaal had.
** In the sequel, [[spoiler:the protagonist's childhood friend Imoen is eventually revealed to be a Bhaalspawn as well]]. The shock of this and the torture she'd been under briefly breaks her mind and she temporarily becomes an EmptyShell.
* ''VideoGame/ResidentEvil5'': In a flashback set a few years before the events of the game, [[BigBad Albert Wesker]] discovers that he is just another one of Umbrella's old experiments -- Project W.
-->'''Albert Wesker:''' Are you saying I was...''manufactured?''
* In ''VideoGame/MassEffect3'' it's revealed in some old logs that took place before the second game, that Shepard was completely brain-dead when they were recovered by Cerberus, with one of the Lazarus Project scientists commenting that because of this, bringing Shepard back would be ''impossible''. The fact that Shepard somehow was resurrected ''anyway'', has them momentarily wonder aloud if s/he is the ''real'' one.
-->'''Shepard:''' Maybe I'm just some sort of high-tech VI who ''thinks'' s/he's Commander Shepard?
** It's implied, that Shepard ''is'' the real one, but [[TheUnreveal its never directly confirmed]]. [[spoiler: Unless Liara accompanies you on that mission, in which case she responds to Shepard by saying that she knew Shepard was real the moment she met them in Mass Effect 2, and given the tactile telepathy that her species appears to have there's no reason to doubt her.]]
** The "Citadel" DLC all but confirms that Shepard is real [[spoiler:since Cerberus probably wouldn't have preferred a mere high-tech VI to their clone.]]
** There's a easter egg alluding to this in the the first MassEffect game: the layout of the Council's room, where they'd deny the existence of the Reapers, strongly resembles the outline of a typical Reaper ship.
* The old PC AdventureGame ''VideoGame/{{Waxworks}}'' has the player trying to undo a family curse that [[CainAndAbel has caused every set of twin boys to have one good and one evil son.]] After traveling through time Series/QuantumLeap style to four other similar sets of twins, you finally go back to the witch that cursed your ancestors to begin with and kill her. [[spoiler: Then you finally rescue your brother, only to learn that you were the EvilTwin the entire time.]]
* ''VideoGame/KingsQuestVI'' has a magic mirror in it that reveals someone's true identity. There are two places it can be used ([[StoryBranching though not in the same playthrough]]). One is in passing the Lord of the Dead's challenge to make him cry, wherein he realizes in an instant his long miserable existence. The other has Alexander revealing to his nearby allies that the supposed Princess Cassima is actually a genie in disguise.
* ''VideoGame/ReahFaceTheUnknown'' ends with a disturbing explanation from the phantom alchemist who accompanied you throughout the whole game. [[spoiler: Instead of being a journalist who was brought to Reah by soldiers to investigate a portal, you are some kind of explorer being tested on Reah by the alchemist - who is actually the planet's AI that built everything you saw. And this wasn't the only time you've gone through; Everyone's seen you before, but you have no memory of this. And to make things worse, [[AndIMustScream he wants you to try it all again for as many times as he sees fit.]] There's no other ending or alternate path to completing the game. ]]
* In ''VideoGame/ImperiumGalactica'', [[spoiler:the PlayerCharacter is revealed to be an android created by TheEmpire as a last desperate attempt to restore its former glory and prevent the Dargslan Kingdom from conquering it]].
* In ''VideoGame/ADarkRoom'', you're a regular FeaturelessProtagonist. As the game progresses, you start to wonder why you can wield six or more weapons simultaneously, and why the entire military attacks you on sight... until it's revealed that "wanderer" means alien, and you and your ragtag bunch of villagers are what's left of an invasion fleet. [[spoiler: And those woodland creatures that you've been trapping for meat and skins? They're not animals--they're the fully sentient native species of the planet; you keep picking up scraps of cloth in your traps because you've been trapping the same fully clothed bipedal scavengers that you've been fighting during your supply runs]].
* ''VideoGame/EvilIslands'': It's eventually revealed that Zak's identity is [[spoiler:that of the mysterious Joon you've been looking for during the Suslanger arc]].
* ''VideoGame/FireEmblemAwakening'' has [[SarcasmMode lovingly]] prepared a double-whammy special tomato puree surprise for you. [[spoiler:You, as the Avatar, are [[OmnicidalManiac Val]][[TheDragon idar]]'s child. Yes, the spawn of the madman who heads a ReligionOfEvil dedicated to the evil Dragon Grima; the same man who attempted to have your friends assassinated in cold blood in the middle of the night and the one who eventually helps Grima mind control you to attempt to murder your best friend (And quite possibly your husband, if your Avatar is female). That's the ''[[FromBadToWorse least]]'' of your worries. Have you ever wondered why your Avatar and your children are so stupidly strong? It's because you are the most perfect result of a SuperBreedingProgram by said ReligionOfEvil, designed to create [[SoulJar a suitable vessel]] for their dragon master [[GrandTHeftMe to possess]].[[ApocalypseMaiden You]] '''are''' to have your body stolen for use by Grima. And TimeTravel is involved in this game. And guess what? Nothing quite feels like a kick in the nuts like hearing the impending realization of your dark destiny coming from the mouth of ''your own body'' from a BadFuture where you were possessed by Grima, were ForcedtoWatch Grima kill your best friend/possible husband, and proceeded to lay waste to the world, bringing unmeasureable death and destruction to all that lives with you in the front seat.'''YIKES.''' Fortunately for everyone not from the Grimleal, you can and WILL ScrewDestiny to prevent the present from turning into that ruined future.]]
* The three main characters in ''{{VideoGame/Phantasmat}}'' are all [[spoiler:dead from drowning when a dam burst and flooded the town]], although none of them initially realises it. The protagonist gradually reveals their pasts to them:
** The girl: [[spoiler:Convinced she was to marry her (philandering) lover in a secret wedding, she drowned while waiting for him in the church tower]].
** The hotel owner: [[spoiler:A violent criminal who strangled the hotel's previous owner in order to 'retire' as the new owner. He drowned while attempting to hide stolen money by burying it]].
** The old woman: [[spoiler:As the mayor's wife, she was envious of her husband's wealth and standing. She killed him by poisoning, then regretted it and drowned while mourning at his grave in the cemetery]].
** Continuing this, Phantasmat: Cruicible Peak has [[spoiler: all people you meet that died in an avalanche that destroyed the town]]:
*** Greta: [[spoiler: Got a call to skedaddle but gathered so many belongings and her car swerved on the icy road, slamming against a shop front and trapping her inside.]]
*** Peter: [[spoiler: Died waiting for a letter from his divorced wife and kids and died at the post office]].
*** Schultz: [[spoiler: Was skiing down he mountains and died at the bottom of the hill when the avalanche hit]].
*** Otto: [[spoiler: A man who's had an...obsession with fire who would trigger a humongous explosion that not only created the avalanche but killing him with it.]]
* In the UsefulNotes/SuperNES ''Lightnovel/{{Slayers}}'' game, [[spoiler: Lina]] turns out to have been a duplicate for the entire game, while the real deal has been held hostage offscreen for most of it.
* VideoGame/IHaveNoMouthAndIMustScream: Nimdok is given the task to find "The Lost Tribe". [[spoiler: He finds a mirror, that shows anyone with absolute objectivity, and learns a horrific truth. He sold his Jewish parents out to the Nazis to perform his gruesome experiments, and realizes he himself is the Lost Tribe.]]
* The premise of ''VideoGame/EtherOne'' is that the player takes on the role of a "Restorer" who, working for the eponymous "Ether One" company, uses advanced technology to somehow [[JourneyToTheCenterOfTheMind project into the memories]] of a patient named Jean Fletcher, who is suffering from dementia, in the hopes of helping to piece together fragments of her memories while fighting back the progression of her disorder. [[spoiler: Jean Fletcher died some time ago. The "Ether One" company does not exist, nor does the technology supposedly used by them. You are actually Jean's surviving husband, Thomas. The game is taking place in ''your'' mind, and the entire premise is Thomas's way of coping with the conventional treatment that he is receiving for ''his'' dementia while he tries to put his own memories back together]].
* In ''VideoGame/{{Dragonsphere}}'' a character learns that he is not who he believed himself to be: [[spoiler: specifically, the player character learns that he is not actually King Callah, but that he is a shapeshifter magically molded into Callah's appearance and given Callah's memories.]]
* ''VideoGame/{{Overlord}}'' is about the reincarnation of an [[VillainProtagonist evil]] [[ExactlyWhatItSaysOnTheTin overlord]] seeking vengeance on the seven heroes that previously defeated him. One of said heroes is [[spoiler: possessed by the spirit of the evil overlord. The PlayerCharacter is actually the eighth hero, who was left for dead by his former comrades.]]
* Vayne, the protagonist of ''[[VideoGame/ManaKhemiaAlchemistsOfAlRevis Mana Khemia]]'', is introduced as an amnesiac hermit living with his cat-like [[ElementalEmbodiment Mana]] Sulpher. And then [[WhamEpisode Chapter 11]] rolls around. [[spoiler:Turns out Sulpher is just a normal cat. ''Vayne'' is ''his'' Mana, more specifically an artificial Mana of Wishes created by Sulpher's former owner. His powers make him a RealityWarper capable of granting any wish, his "father" created him to grant his own wish for death, and he's performed at least three resurrections throughout the plot without even realizing it. Vayne... [[SuicidalCosmicTemperTantrum doesn't take it well]].]]
* With the prevalence of Institute Synth infiltrators in ''VideoGame/{{Fallout 4}}'', the player is bound to run into at least a few that don't know they're actually Synths. While characters like the Coursers, Glory, [[spoiler: random infiltrating Settlers and [[GoodBadBug brahmin]], and Mayor [=McDonough=]]] know their identities, some such as [[spoiler: [[KnightInShiningArmor Danse]], Amelia Stockton, [[MrFixIt Sturges]], and [[TheChanteuse Magnolia]]]] appear to have no idea. The reveal of [[spoiler: Danse's]] nature is a plot point, but you won't know about the others unless you kill them and [[ImpostorExposingTest find the Synth Component on their dead bodies]].
* In ''Videogame/{{Warframe}}''' seemingly nobody - InUniverse or not - know what [[PlayerCharacter the Tenno]] ''are''. Captain Vor calls them EnergyBeings, various Infested entities call them their "own flesh", and Codex entries mention terrible accidents that exposed people to The Void and gave them [[PowerIncontinence uncontrolled powers]]. In The Second Dream, a WhamEpisode, [[spoiler: the player realizes that ''all'' of them are true. The Warframes are cultured Infested bodies, piloted remotely via projected consciousness by children/teenagers that had been exposed to the Void. Up til the finale of the quest, the player was piloting their Warframe in a lucid dream without even realizing they are even human]].
* Overlaps with TomatoSurprise in ''VideoGame/XenobladeChroniclesX'', with the revelation in Chapter 5 that [[spoiler: the player character is a robot- which nobody else in the party is surprised at because they are ''also'' robots, as are all the other humans you've met. Everyone else is aware of this fact, but due to the player's LaserGuidedAmnesia and the robots being designed to mimic human bodies, you were not. What makes this also a TomatoSurprise is that none of the other characters mention the fact with more than vague hints until after the reveal, even the people whose jobs involve repairing the citizens. Also, nobody uses the "Overdrive" ability, which is a function of the robot bodies, until after you learn about it.]]
* ''VideoGame/GuiltyGear'': ''Xrd -Revelator-'' reveals that [[spoiler:Axl Low is basically a sentient bundle of time magic, with the power to hop between timelines and erase or rewrite them at will. And he can never return to his girlfriend Megumi because he already changed the world in a way that led to her timeline being erased. The knowledge hits Axl like a ton of bricks, throwing him into a deep depression.]]
* One relatively early in ''VideoGame/AssassinsCreedIII'' has the reveal that the DecoyProtagonist Haytham Kenway is [[spoiler:actually a Templar, not an Assassin as Desmond et al thought]]. Desmond is naturally freaked out and extremely angry, given that Haytham is one of his ancestors.
* The indie game ''The Monster Within'' is about a detective getting hired by a young woman to look into a series of women murders involving the supernatural and specifically Lust. The game strongly hints on the detective being [[spoiler: a Incubus who has killed women in the past by seducing them]]. The ending [[spoiler:subverts this. He never killed anyone, the woman that hired him did in an attempt to lure his demonic side back out so he would help her kill more people]]. It is left open what he does with this knowledge.
* 100 years prior to the start of ''VideoGame/WorldOfFinalFantasy'', The Demon Dyad had caused trouble in Grymoire. And they did it by having the Dyad Servants lay waste to the land. [[spoiler: Near the end of the game. It is revealed that [[AmnesiacHero Reynn and Lann]] were the Demon Dyad. And their lost Mirages were the Dyad Servants. Due to their inability to keep their Mirages in check, they just let them do whatever they want, however they please.]]

[[folder:Visual Novels]]
* ''VisualNovel/HigurashiWhenTheyCry'' has a borderline example: It turns out that Keiichi's foray ThroughTheEyesOfMadness in the first arc was ''him'' being crazy and not a case of TownWithADarkSecret -- but Keiichi only learns this in an alternate timeline when he gets a glimpse of his own actions from outside of his own mind at the time.
* In ''VisualNovel/SuperDanganRonpa2'', no one could have predicted that the cast was really [[spoiler:former members of the terrorist organization Ultimate Despair]], least of all Hajime Hinata, the protagonist who is merely [[spoiler:a reconstruction of pre-surgery Izuru Kamukura, the former Ultimate Hope]]. Talentless? [[spoiler:[[TheAce Not even close]].]]
* Itsuki in ''VisualNovel/{{Suika}}'' realizes that she [[spoiler:is actually dead instead of her sister]] at the end of the first chapter.
* In ''VisualNovel/VirtuesLastReward'', the protagonist Sigma and 8 other strangers are abducted by someone named Zero and are forced to play the Nonary Game. Sigma, a 22-year-old college student, later finds out that [[spoiler:he's actually 70 years old, an esper, has lost his eye, had his arms replaced by cybernetic ones, and is Zero.]] Needless to say, this is quite the shock to him.
* Subverted in ''VisualNovel/{{Sunrider}} Liberation Day.'' Ava Crescentia and Asaga di Ryuvia begin to suspect that their friend and chief engineer Chigara Ashada is one of the Prototypes [[note]](a cabal of transhuman clones that share a HiveMind, are trying to take over the galaxy, and happen to look just like her)[[/note]], and that she is unwittingly feeding them information on the ''Sunrider’s'' movements. A comprehensive scan by the ship’s doctor Claude Trilleo confirms that she is an ordinary human, and the crew speculates that the resemblance is either just a coincidence or a form of psychological warfare. [[spoiler:Ultimately DoubleSubverted: Chigara really is a Prototype, and Claude—who has not only been working with them from the beginning but is also the real source of the leak—falsified the results of the scan]].
* ''VisualNovel/CorpseParty2DeadPatient'' centers around an amnesiac teenage girl trying to escape a hospital that's been overrun by zombies. [[spoiler: The True End of Chapter 1 ends with her being captured; her captor pulls up her shirt to reveal a gaping hole in her chest where her heart should be, implying that she's a "dead patient" herself.]]

[[folder:Web Comics]]
* ''Webcomic/DanAndMabsFurryAdventures''
** A mundane version of this occurs when [[http://www.missmab.com/Comics/Vol_651.php Dan realizes why he doesn't trust Abel]].
** Which only follows [[http://www.missmab.com/Comics/Vol_303.php more normal case of the same trope happening to same character]] ...
* The big twist of ''ComicStrip/{{Fleep}}'' is that the building collapse which trapped Jimmy in the phone booth was caused by [[spoiler:a terrorist bombing. And Jimmy was leading the terrorists.]]
* [[http://nedroid.com/2006/07/beartato-99/ This trope in a nutshell]], courtesy of ''Webcomic/{{Nedroid}}'s'' Reginald and Beartato.
* [[http://tainted.comicgenesis.com/ Tainted]] has [[spoiler:Geneveive,]] a paladin find themselves in this situation.
* Parodied in ''Webcomic/TheWayOfTheMetagamer 2: InNameOnly''.
-->'''The Wise Wizard Guy:''' You, Detective... you are a tomato.\\
'''The Detective:''' Yeah, I know.\\
'''The Wise Wizard Guy:''' ... no "oh God, WhatHaveIBecome"?\\
'''The Detective:''' Nope.
* In ''Webcomic/GunnerkriggCourt'', [[spoiler:Annie]] isn't quite human, and [[spoiler:this was [[ParanoiaFuel hidden from her]] by '''[[PowersThatBe every single authority figure she has ever known]]'''...]] except for [[spoiler:[[TricksterMentor Coyote]].]]
* ''Webcomic/{{Fans}}'' had a short where Tim wakes up to find that he's the only person left on Earth. Two aliens offer him a series of female human clones modeled after people from his memories, so he can repopulate the world. The story ends with Tim finding out that [[spoiler:1) this is not earth 2) he's a clone too and 3) this was all the aliens' experiment to breed humans.]]
* In ''Webcomic/CommanderKitty'', [[spoiler: Nin Wah's android double]] [[http://www.commanderkitty.com/2012/04/07/all-in-her-head/ wakes up to find 1. she's been reduced to a disembodied head, 2. she's not the original, and 3. her memories are faulty.]] All things considered, she doesn't seem to take the news ''that'' badly.
* In ''Webcomic/TheOrderOfTheStick'', When the Order discovers Girard's gate, they find that the entire Draketooth clan of powerful sorcerers who are supposed to be guarding the gate have all simultaneously dropped dead a few weeks ago. [[http://www.giantitp.com/comics/oots0842.html While looking for clues as to what occurred to kill the mages]], [[spoiler:Vaarsuvius discovers their family tree, with a black dragon prominently at the top. Given that a few weeks ago they cast a spell on another black dragon that kills everyone related to the target, the implication is obvious.]] Cue HeroicBSOD moment.
* In ''Webcomic/TheSanityCircus'', not even Attley knows that she's one of the same Scarecrows that they have been trying to escape for the entire story. Posey, [[TheChessmaster of course]], knew it all along - but then she's a Scarecrow too.
* In ''Webcomic/GirlGenius'', Anevka knows she was nearly killed in one of her father's MadScience experiments a while ago and now interacts with the world through a robot body her brother made, but doesn't realize her human body died years ago. "Anevka" is the robot, which imprinted with her personality and memories back when she was actually controlling it. She's pretty horrified when her brother tells her.
* ''WebComic/SluggyFreelance'': [[ShowWithinAShow Torg's comic book]] "Gunman Stan [=McKurt=] Vs. the Gates of the City of the Damned" has a variation applying to a whole place. It starts with some archaeologists having DugTooDeep near a town and revealed "the gates of Hell itself". The protagonist is supposed to stop another character from opening them; in the end, she dies before being able to explain why opening these gates of the City of the Damned would actually help the people in the town. The reason is then revealed by a sign held by a demonic humanoid: "You are in the City of the Damned". Mind you, Stan [=McKurt=] never figures it out because he's illiterate.
* Changelings in ''WebComic/CharbyTheVampirate'' if they realize they are not the people they have [[KillAndReplace replaced]]:
--> '''Kavonn''': Those such as her are a pitiable sort, when they take in the mind of a creature capable of self-examination and realize what they really are..

[[folder:Web Original]]
* A Creepypasta story titled "Mice" featured a narrator who had trained "mice" into becoming intelligent and making their own communities. He regularly kills some of the weaker ones to discourage any rebellion against him. In the end, it's revealed that [[spoiler:the narrator is actually a robot and the mice are really people.]]
* Another Creepypasta relates the story of a kid being adopted into a family and the subsequent murder of his family members by an unknown man, except for himself, [[spoiler:who turns out to be a dog.]]
* Parodied in the CreepyPasta {{parody}} [[http://www.bogleech.com/ghastlymacaroni.html Ghastly Macaroni]], in the story called "You were all the frogs." ("Warning spoiler title.") You keep finding frogs in your house and you keep putting them outside, but when you look in the mirror, you realise [[ExactlyWhatItSaysOnTheTin you were all the frogs]] and have therefore locked yourself outside.
* Up until the WhamEpisode in ''Machinima/RedVsBlue: Reconstruction'', every problem that befell upon either the Red or Blue teams was caused by the Freelancers and their many AI. So naturally, it was a very shocking twist to find out [[spoiler:that Private Leonard Church was actually the original Alpha AI that had been split into all the other AI that the cast had been fighting throughout the entire series. On top of that, the director of Project Freelancer is the ''real'' Leonard Church. Furthermore, as Revelations has since revealed, Tex is ''also'' an AI, based off someone the Director lost, but loved so much his memories of her ''spontaneously created a separate AI''. Church preferred to believe that he was a ghost.]]
* In ''Literature/SuperStories'', [[spoiler:the genius roboticist Veldron eventually learns that he's a robot duplicate of the real Veldron, designed to be an ExpendableClone.]]
* Defied in [[http://www.youtube.com/watch?v=3pyuFfKPCvY this]] Britanick sketch guest starring Creator/JossWhedon.
* The Roleplay/DarwinsSoldiers story ''Card of Ten'' follows the tale of Dr. James Zanasiu and his team through the antimatter world of Gaman. At the end, it's revealed that [[spoiler: this Dr. Zanasiu is actually an antimatter copy of the real one, who's still back on Earth.]]
* Website/CollegeHumor:
** In the video "Pot Cookie Monster" (yes, it's a parody of ''Series/SesameStreet''), the eponymous monster comes to realize that he is just a puppet under the drug's effects.
** In the ''WebVideo/HardlyWorking'' sketch "[[https://www.youtube.com/watch?v=pyaFtO-JJz8 All-Nighter Hardly Working: He's Right Behind Me]]", Jeff gripes about Dan's disgusting behavior in the office, only to eventually realize that ''he's'' actually Dan.
* In the ''Roleplay/GlobalGuardiansPBEMUniverse'', [[SuperStrength Super-Strong]], NighInvulnerable superheroine Vindicator's backstory involves her parent's accidental death when agents of [[AncientConspiracy VIPER]] attacked a factory at which both of them worked, giving her the perfect excuse to become a hero. Turned out that she was actually a [[DesignerBabies cloned, genetically engineered artificial lifeform]] who was cooked up in a [[AncientConspiracy VIPER]] lab for the sole purpose of [[AWolfInSheepsClothing infiltrating and eventually betraying]] the Global Guardians.
* There are several reveals of this type in ''Roleplay/RubyQuest''. In chronological order:
** [[spoiler: Ruby was once very violent, and killed Stitches and Tom ([[CameBackWrong they got better, sort of]].)]]
** [[spoiler: Both Ruby and Tom are infected by the substance that created the 'zombies' fought earlier. The zombies themselves were normal people who the substance mutated until they became near-mindless monsters. Their names were later discovered to be Stitches and Daisy.]]
** Finally, [[spoiler: Tom Nook, who the players thought was the 'extremely dangerous' Subject #6, was actually Subject #5. Ruby's companion Tom was the real Subject #6]] (although, in a variation, this reveal was only shown to the players themselves, not the characters).
* ''WebOriginal/SeventeenThousandSevenHundredSeventySix'' ends its first chapter with the revelation that [[spoiler:all of the main characters are actually space probes.]]
* In ''[[WebVideo/ThomasSanders Losing My Motivation]]'', Logan learns Thomas has a lack of motivation and directly suspects Virgil (who personifies Anxiety) is the one responsible for it. But Virgil is not the one who caused it. [[spoiler: It's Logan ''himself'']].
* Luke's ''VideoGame/TheEvilWithin2'' choose-your-own-adventure quiz in ''[[WebVideo/OutsideXbox Outside Xtra]]'' culminated in TheReveal that Ellen's character was a penguin all along, complete with {{Foreshadowing}}. Ellen is initially disgruntled, only to find the mental image of her penguin character flailing at a researcher hilarious, and accepted it.

[[folder:Western Animation]]
* ''WesternAnimation/BatmanTheAnimatedSeries'':
** "His Silicon Soul": A robot duplicate of Batman goes through this trope before his programming activates. The plan of the AI that created it is only foiled because the duplicate was programmed ''too well'': it was programmed with all of the real Batman's personality traits, including his steadfast refusal to kill.
** "Growing Pains": Clayface forms a separate sentient being, in the form of a young girl, to scout for him. She forgets who she is and is found by Robin who falls in love with her. She tells Robin of a man who is chasing her, and when they encounter him he seems to be her father; he tells the girl (Annie) that "It's time to come home." In the heartbreaking final scene, Annie realizes what she is, and throws herself into Clayface to save Robin, being absorbed in the process. Robin then throws batarangs into the tank of solvent above them, causing streams to pour out onto Clayface as he demands he bring Annie back. Since Annie gaining separate sentience was a fluke to begin with, Clayface can't. Batman catches Robin's arm just as he's about to hurl the batarang that will kill Clayface.
** "Judgment Day": Two-Face was targeted by a violent vigilante who called himself the Judge, and was determined to get him first. He and Batman were in agreement on this, as the Judge had already nearly killed both the Penguin and Killer Croc, and eventually, nearly succeeded in killing Two-Face by turning his own hideout into a DeathTrap - going to so far as to seal off an escape route that Two-Face thought only ''he'' knew about - that Batman had to get them both out of. As it turned out the Judge was actually a third personality of Harvey Dent himself, created in response to his Two-Face persona in order to ''fight'' crime. As Batman said in the end. "That's why he knew about the escape route. He knew everything about Two-Face... Except that he ''was'' Two-Face."
* ''WesternAnimation/TheBatman'', has Batman and Robin trying to distribute the cure for a madman's ZombieApocalypse drug. Turns out they were the ones under the effects of a drug that gives you wild hallucinations about everyone else being a zombie, and that same hallucinogen was what they were about to spread through the entire city.
** While D.A.V.E. is aware that he's a robot, he believes that he's a human supervillain who's been imprisoned inside of a robotic body - in reality, he's a computer program designed by [[PsychoPsychologist Hugo Strange]] with the memories and abilities of Batman's rogues gallery. When Batman asks him about his origin, he rattles off the origins of several other villains and then [[VillainousBreakdown has a meltdown when he realizes the truth]].
--->'''D.A.V.E.''': "But . . . I am [[CardCarryingVillain Gotham's ultimate criminal mastermind]]! I consider all possibilities! How could I not have considered . . . ''this''?"
* Still in the Franchise/{{DCAU}}: ''WesternAnimation/SupermanTheAnimatedSeries'': Bizarro is full of FakeMemories that have him convinced he's Superman. He even convincingly looked and acted like the real Superman, at least, initially...
* Used in an episode of ''WesternAnimation/LegionOfSuperHeroes''. Superman relizes that he is actually the shape-shifting Ron-Karr, tricked into believing that he is Superman in order to be put to use as a spy.
** And the only reason Ron-Karr was planted there was because Chameleon Boy(another shapeshifter) was planted in the villain's team with the same method, needing a similar Tomato in the Mirror moment to get him back.
* A variation of this trope occurs in ''WesternAnimation/JusticeLeague''. Franchise/{{Superman}} and WonderWoman were forced to have illusions in which they saw each other as monsters. [[LetsYouAndHimFight Fighting ensues.]] After a while of [[HowMuchMoreCanHeTake brutal fighting from both sides,]] Superman discovered, to his astonishment, [[AGlitchInTheMatrix Wonder Woman's - not the monster's - reflection in water.]] Superman tried to expose the ruse to Wonder Woman, but found his attempts futile. Following a small, but brutally [[NoHoldsBarredBeatdown one-sided fight,]] Wonder Woman finally got an answer to "Where is Superman?!" The monster pointed to a ''mirror'' revealing that she had been fighting her friend the entire time.
* Also from ''WesternAnimation/JusticeLeague'' is the two-part episode ''Legends''. After a few members of the League get transported to an alternate universe, they find themselves in a bizarre world that is seemingly a pastiche of the retro [[UsefulNotes/TheGoldenAgeOfComicBooks Golden Age]] and [[UsefulNotes/TheSilverAgeOfComicBooks Silver Age]] comic books, with its own (cornball) version of the Justice League, the Justice Guild of America, who regularly battle against equally cornball villains. However, after some investigation by Green Lantern and Hawkgirl, it's [[TheReveal revealed]] that [[spoiler:the entire city was a LotusEaterMachine created by a RealityWarper, and the real Justice Guild died long ago trying (and failing) to prevent a nuclear war; in other words, the current Guild learns that they aren't even real. When Ray attacks and defeats the League members, the Justice Guild ultimately decides to fight Ray despite knowing that defeating him would result in a DreamApocalypse that would [[HeroicSacrifice take them with it]]. [[TearJerker "We died once to save this Earth. And we can do it again."]]]]
* ''WesternAnimation/Ben10AlienForce'' has a duo (ex-trio) of alien hunters that think they were mutated by [[ScaryDogmaticAliens DNAliens]], and hate all aliens. At the end of the episode, they are told that the reason they look like aliens is because [[PunctuatedForEmphasis They. Are.]] [[HalfHumanHybrid Part alien.]] [[BigNo NO.]] Really?
** Also [[spoiler:Tyler in the episode "Inside Man", turning out to be a [[ScaryDogmaticAliens DNAlien]] who still is fighting it and trying to be human.]]
* At the cliffhanger end of the Season Two finale of ''WesternAnimation/TransformersAnimated'', [[spoiler:Sari looks down at her injured elbow to see circuitry poking out, and her adoptive dad, robotics genius Isaac Sumdac, responds [[{{Understatement}} "We need to talk."]] In the next season, it's revealed that Sari was a Cybertronian Protoform Isaac somehow came across, and sampled his DNA to create her form.]]
** Except Isaac isn't her [[spoiler:adoptive dad]]. He's the genuine article, even when you consider the revelation of Sari's "birth". After all, [[spoiler:his DNA was required in order to bring her "online" and was what made her part-Human, effectively making her his biological daughter at the same time as being a robotic alien.]]
* Several examples in ''WesternAnimation/{{Futurama}}'';
** One of the "Scary Door" gags: "Why should I believe you? You're [[UsefulNotes/AdolfHitler Hitler]]!"
** In the episode "The Honking", Bender is run over by a "were-car" while staying at a mansion he inherited from his uncle. When people back in New New York are getting run over, Bender believes the were-car followed him, until it turns out Bender became a were-car himself.
** Subverted in "Into The Wild Green Yonder". Fry looks around to find the person whose thoughts he can't read (the dark one). After not finding anyone, he concludes that he is himself the dark one, as his thoughts can't be read by other telepaths. [[spoiler:However, the dark one is actually a small alien leech that Leela keeps nearby.]]
** Played straight in ''Bender's Big Score'' though. Fry loses Leela to a man named Lars. He later travels to the past and splits in two, with the original Fry returning to the future and the time loop created copy staying and living 12 years in Fry's original time. When Bender travels back in time to kill this Fry, [[spoiler:his attack burns Fry's hair off and damages his vocal cords, changing his voice. Time-loop Fry looks in the mirror and realizes that '''he is''' Lars and then travels to the future to court Leela.]]
** In ''Rebirth'' an interesting variation occurs the first episode of the revived series. The Planet Express ship crashes after the events of the last movie, killing everyone, except the Professor and an amnesiac Fry, who is able to revive everyone with a stem cell machine. Leela remains in coma, so Fry builds a robot version of her in despair. The robot Leela learns of her true nature, but aside from some Angst, isn't concerned...until of course the real Leela wakes up, and they [[CloningBlues battle each other, so Fry is forced to shoot either one]], [[TakeAThirdOption and ends up]] [[TooDumbToLive shooting himself.]] [[spoiler: Turns out Fry himself, was a robot, the real him was killed in the crash, while Leela, whom he shielded, survived. Since there was little left of Fry, Leela created a robot Fry. A malfunction, however, killed Leela forcing the Professor to use the rebirth machine on her along with the other dead crew members, and destroyed Robot Fry's memory. The issue is resolved when Fry is ressurected, and Robot Fry and Leela decide to hook up with each other.]]
* On ''WesternAnimation/TheSecretSaturdays'', the Saturday family and their nemesis, V.V. Argost, spend the first season trying to retrieve clues that would help locate Kur, a dangerous ancient Sumerian being that ruled over all cryptids, only to find that [[spoiler:Zak, who has always had the ability to communicate with these creatures, is Kur's reincarnation.]]
* PlayedForLaughs by ''WesternAnimation/SpongebobSquarepants'': In "Hall Monitor," Spongebob and Patrick are out to catch a maniac, who broke through open windows and caused car crashes. Turns out Spongebob's the maniac. He found that out after [[ItMakesSenseInContext rampaging blindly through the city while stuck in a mailbox.]]
** In the episode "Rule of Dumb," when Squidward makes all of Bikini Bottom realize that [[AuthorityInNameOnly "king" Patrick has no real power of authority,]] he goes on an angry tirade against Spongebob, insisting he's not a corrupt ruler. When he realizes Spongebob fearfully snuck out, Patrick decides to get himself the drink he ordered Spongebob to get him, when he sees his monstrous reflection in the mirror. Only then does he realizes why ended up alone, and happily abdicates the throne.
* In ''WesternAnimation/{{Ninjago}}'', Zane has gone his whole life not knowing if he actually has any parents. Guided by a mysterious falcon, he eventually stumbles upon a hidden laboratory. He first discovers [[spoiler:the falcon is actually a robot]], then sees mysterious blueprints. Moments later, he realizes these aren't just any blueprints... [[spoiler:[[TearJerker they're]] ''[[RoboticReveal his.]]'']]
* In ''WesternAnimation/YoungJustice'', [[spoiler:Red Arrow]] was the most adament about [[spoiler:finding the mole in the team.]] It would turn out that [[spoiler:'''he''' was unknowingly the mole and while under mind control, he put the ''entire Justice League'' under mind control as well. In the next episode it goes FromBadToWorse. He isn't even the real Roy Harper, but a clone created to be the villains' pawn.]]
* Parodied in the ''WesternAnimation/StarVsTheForcesOfEvil'' episode "Blood Moon Ball" where a skeletal horse is shocked to discover that he's been dead all along.

[[folder:Real Life]]
* [[http://edition.cnn.com/2010/WORLD/europe/09/23/poland.jewish/index.html?hpt=C1 Secret Jewish heritage converts neo-Nazi]]
** It gets better: [[http://metro.co.uk/2015/05/04/hungarian-neo-nazi-politician-discovers-he-is-actually-jewish-5180536/ one of the leaders of an antisemitic Hungarian political party]] found out he is a Jew.
* One incredibly sad example is that of [[http://en.wikipedia.org/wiki/David_Reimer David Reimer]]. He and his twin brother were being circumcised shortly after birth, but the careless doctor burnt off his entire penis. Therefore, he was sexually reassigned as a girl. He appeared to be feminine in the first few years of life, but then exhibited wholly masculine traits, leading to a mental breakdown in adolescence when as a social female he underwent aspects of male puberty despite having had estrogen treatment. At this point he finally learned the truth from his parents. He transitioned to male much as an FTM transgender person does, but felt haunted the rest of his life by the lies of his childhood, eventually culminating in his suicide (as well as that of his twin brother) at age 38. It didn't help that at this point he was already a textbook example in university sociology classes about the limits of social conditioning.
* There's a museum in Galveston, Texas that had an exhibit on the world's most dangerous creatures, with pictures and a few of the smaller ones. At the end of the exhibit, there's a picture of "The deadliest creature in the world". [[spoiler:There's only a mirror.]]
* According to a "Ripley's Believe It Or Not" cartoon, a man was put in prison for attempted murder. It took years to find out who the man's would-be victim was, and it was eventually discovered it was himself!
* Craig Cobb, a white supremacist who wanted to create a town just for white supremacists and Neo-Nazis, was shocked late in 2013 when a DNA test revealed he was 14% Sub-Saharan African. To be expected if you know about genetics and biology, but it was contrary to the ardent white supremacist's expectations.
* While studying brain scans to search for patterns that correlated with psychopathic behavior, a certain neuroscientist found that [[http://www.smithsonianmag.com/science-nature/the-neuroscientist-who-discovered-he-was-a-psychopath-180947814/ his own brain fit the profile]].
** This last was replicated by Creator/EliRoth in a documentary that the director filmed and hosted for the Science Channel about sociopaths and psychopaths. In addition to detailing many other tests that determine sociopathic and psychopathic tendencies, the director underwent a complete psychological profile, and thus found out that he possessed many of the traits that are commonly thought of as "sociopathic."
* Inverted example, where the revelation in question was a surprise to everyone ''except'' the person it was about: the MistakenIdentity case of [[http://en.wikipedia.org/wiki/Mistaken_Identity:_Two_Families,_One_Survivor,_Unwavering_Hope Laura van Ryn]], a college student who was in a major accident with several other classmates, including another blonde student who closely resembled her, Whitney Cerak--thanks to the injuries sustained, her being unable to speak for a number of months after the accident, and the placement of a purse at the crash site, Laura's family sat by her bedside and did all they could to take care of her while Whitney's buried and grieved for the daughter they'd lost...only for everyone to discover the girl in the hospital was actually Whitney. It was made worse by the fact that the hospital staff was so convinced of their identification that they in turn dismissed Laura's family's suspicions and encouraged them to believe their daughter's written notes about her parents' names and calling them "false parents" was a case of amnesia or brain damage...so that until the truth came out, Whitney was in the position of actually knowing the truth, but unable to convince anyone of it. It would be easy to imagine her eventually losing her mind, unable to determine what was real or coming to believe she actually was Laura, if the mix-up had been sustained any longer.
* This is how a lot of [[https://en.wikipedia.org/wiki/Primarily_obsessional_obsessive_compulsive_disorder primarily obsessional OCD]] ("Pure-O") works: the sufferer constantly worries that they are ''something'' ([[WouldHurtAChild a pedophile]], [[AxCrazy psychopath]], [[WasItAllALie not truly in love with their significant other]], gay or transgender[[note]]This is not to be confused with [[InternalizedCategorism internalized homo/transphobia]], where the person ''knows'' they are gay/trans and hates themselves for it[[/note]], and more) they desperately do not want to be, and have gone their whole lives without realizing it. It's been said that Pure-O OCD is one of the worst psychological disorders to deal with, because it means you can't trust even yourself.