->'''Rouge:''' Do you actually believe that... you're the real Shadow?\\
'''Shadow:''' No doubt.\\
'''Rouge:''' Even your memories might not be real, you know?\\
'''Shadow:''' Even if my memories are not real, it's still me, Shadow.
-->-- ''VideoGame/SonicAdventure2''

Sometimes when LaserGuidedAmnesia won't cut it, the villains, heroes, or TheMenInBlack need to radically alter a subject's very ''memories'' to ensure their EvilPlan, EpiphanyTherapy or [[{{Masquerade}} cover-up]] (respectively) works flawlessly.

In these cases they implant Fake Memories, using things like PsychicPowers, [[{{Brainwashed}} brainwashing]], [[NeuralImplanting computers]], or the week's AppliedPhlebotinum to replace true memories with more convenient false ones.

Of course, [[PygmalionSnapBack this never works as planned.]] Like an itch they can't scratch, the character with tampered memories will notice things aren't as they should be and scratch at the false memories like a scab, questioning their [[ConvenientlyUnverifiableCoverStory "Past"]] and [[BrokenMasquerade searching for the truth.]] Or go crazy trying. Occasionally, a hero will leave a NoteToSelf or instructions for friends to help. The irony being that the false memories tend to lead the character right back to the people who erased them with enough of an advantage to take them out.
A darker, more sinister version of this trope is when the character in question realizes his memories don't add up, but doesn't know ''[[SchrodingersButterfly which]]'' set of memories is true. Often self-inflicted, these memories are slowly revealed through [[OrWasItADream dream sequences]], and the experience tends to come with AnAesop about the frailty of human mind and the subjectivity of memory.

Quite common in video games, probably because [[EasyAmnesia amnesiac heroes]] are extremely convenient for the format. Occasionally used as part of a more radical attempt at making someone into an {{Unperson}}.

Related tropes include ManchurianAgent, MemoryGambit, AmnesiacDissonance, and TomatoInTheMirror. Compare ExpositionBeam.


[[folder:Anime and Manga]]
* Happens to [[spoiler:Ryuko]] in ''Anime/KillLaKill'' when [[spoiler:she is forced to wear Junketsu by Nui and Ragyo, making her believe she grew up living a happy life with Ragyo, so as to turn her against her friends]].
* ''Everybody's'' memories in ''Anime/TheBigO''. {{M|indScrew}}aybe.
* Appears several times in ''Manga/{{Bleach}}'':
** Used by Soul Reapers for [[{{Masquerade}} covering up]] spiritual activity in the World of the Living. Rukia is [[PlayedForLaughs particularly trigger-happy]] with the device that does it. The Soul Reaper has no control over the replacement memories the target ends up with, resulting in sometimes outlandish results. Ichigo's family thinks everyone slept through a lorry crashing into the side of their house to explain the devastation caused by a Hollow attack that almost killed them; Orihime's bizarre tale for the devastation a Hollow attack causes to her house, is only accepted by everyone because Orihime's fantastic imagination is infamous. Orihime, however, turns out to be immune to the device because she possesses spiritual power.
** Tsukishima describes his ability as the power to change the past of the person he cuts. He is able to implant memories in those he stabs, making them believe they were always his friends. It's used to agonizing effect to cause Ichigo's friends and family think he is their ally and Ichigo the one acting strange. [[spoiler:Tsukishima even takes Ichigo's place in their adventures; they think he was the awesome hero who, among other things, defeated Aizen (instead of Ichigo), rescued Orihime from her AbusiveParents to raise her (instead of her brother Sora), and took care of Chad and gave him his OrphansPlotTrinket (instead of Oscar, his "Abuelo"). And you better NOT [[MindRape try to fight]] what he makes you believe.]]
*** It can also be used quite effectively in combat. A single cut and he can now predict your every move, because he was the one who ''taught you'' your every move. His power doesn't just work on people either. He can easily kick your ass just by cutting the ''ground'', making it so that he had already visited that area in the past and set up deathtraps everywhere. [[spoiler:Of course, he's quite vulnerable to {{Indy Ploy}}s. He can't know what you're going to do next if ''you'' don't either.]]
* ''Manga/AoNoFuuin'':
** ''Ao No Fuuin'' shows that Soko Kiryu, despite her insistence of just [[OrdinaryHighSchoolStudent being normal]], and memories of the place she had just moved away from, including a bakery shop she went to with her mother often, are fake as no-one can remember her [[spoiler: since Soko looks very different from the ''real'' Soko Kiryu]].
** One of [[spoiler: Takao's]] powers, implanting fake memories into humans' minds. Does it twice to a couple to make them think that Soko is their real daughter.
* ''Anime/SerialExperimentsLain'', a MindScrew series if there ever was one, is largely built around exploring this trope: Lain Iwakura, with the ability to alter humanity's collective memory, is forced to deal with the questions of what reality ''is''. Eventually she [[spoiler: writes herself out of existence by removing all memories of herself from the world]].
* Franchise/GhostInTheShell:
** In [[Anime/GhostInTheShell the first movie]], the antagonist gets a random garbage man to do some jobs for him by promising to help him getting back his wife and daughter, which both never existed. Another mook who was the garbage man's direct contact seems to have been completely mind wiped, leaving only the basics of his cover identity with no knowledge about his actual boss. In both cases, it works flawlessly until someone [[PullTheThread Pulls The Thread]]. The garbage man is told that it's impossible to completely erase the false memories.
** In ''Anime/GhostInTheShellStandAloneComplex'' the Laughing Man alters the memories of everyone who manages to see his real face so that they just remember his iconic laughing face and "Catcher in the Rye" quote icon.
** In the prequel series ''Anime/GhostInTheShellArise'' this is done [[spoiler:via a virus to Motoko Kusanagi herself, in order to frame her for corruption and murder]].
* ''Anime/CodeGeass'':
** The second season begins with Lelouch living a quiet, peaceful life. [[spoiler:Only after C.C. makes contact with him does he remember being captured and given Fake Memories by his father the Emperor, causing him to forget his beloved mother Marianne and sister Nunnally and having been the terrorist Zero, as well as convincing him that the spy Rolo Haliburton is actually his younger brother.]] Not only that, but ''everyone'' in the school is given exactly the same fake memories to make the effect even stronger. They all believe that Lelouch is nothing more and nothing less than a fellow student, and that [[spoiler: Rolo is his brother, whereas Nunally is merely a pretty and kind Britannian princess that later becomes the Viceroy of Area 11]]. And ''then'', [[spoiler: Shirley has her true memories back via [[AntiMagic Jeremiah]], but at some point she happens to mention Nunnally ''while speaking to [[{{Yandere}} Rolo]]''..]].
** Similarly, [[spoiler: ActionGirl Anya Earlstreim has her memories rewritten to cover up how she's the SoulJar of Lelouch's mother, Empress Marianne. It ''really'' fucks up with her self-worth, as the poor girl never knows which memories are hers or not]].
* ''[[Anime/ReadOrDie Read or Die The TV Series]]'' has Joker stating that the British Library did this to [[spoiler: The Paper Sisters. Anita was originally a British Library test subject, and Maggie and Michelle were former Dokusensha Agents who were modified. Dokusensha had tried this before, but previous test subjects went insane. Joker tried telling them that even their memories of meeting each other for the first time were false, but they decide it doesn't matter. The ending shows the viewers the statue of Mary and Jesus in the church where they met, with their initials carved into the base; telling us that the events they remember from that point on were their own]].
* In ''Anime/{{Kaiba}}'', this is done to [[spoiler: Neiro]]. A few other characters, too. In fact, the villain gets rather memory-rewriting-happy.
* ''Manga/MahouSenseiNegima''
** [[spoiler:Asuna]] has fake memories of a normal childhood in the mundane world as part of her success at [[IJustWantToBeNormal becoming normal]] ten years prior.
** Later on, [[spoiler: Shiori secretly takes Asuna's place by copying all of Asuna's memories, so that Shiori believes that she's Asuna. Yes, she has fake memories of fake memories]].
* ''Anime/MagicalGirlLyricalNanoha'' has [[spoiler: Fate]] and her memories of a happier childhood with [[spoiler: a kinder [[EvilMatriarch mother]]. The memories themselves ''are'' real, but they belonged to someone else: Alicia Testarossa, the little girl [[CloningBlues that she was cloned from]].]] [[HeroicBSOD She doesn't take the realization that they're not her own very well]].
* In ''Manga/TsubasaReservoirChronicle''
** [[spoiler:Fei Wong Reed did this to Fay as a part of his [[GambitRoulette crazy elaborate plan]]. He made Fay believe that he sacrificed his brother's life to escape from the hellish imprisonment the two had endured for most of their childhood.]] Though in reality [[spoiler:Fay's brother gave his life willingly in exchange for Fay's freedom]].
** Also used in the anime, during the filler episodes, where Chaos uses fake feathers/memories to convince Sakura that she's known Chaos since she was a child. [[spoiler: Of course, then it turns out that Chaos is actually just a big bunch of Sakura's feathers.]]
* Rosamia from ''Anime/MobileSuitZetaGundam'' is eventually brainwashed into believing Kamille is her long-lost brother, and then has her memories altered again to think that her classmate Gates is her brother instead.
* In ''Manga/FullmetalAlchemist'', Barry the Chopper taunts Al with suggestions that his memories aren't actually real, and he's just an artificial being created by Ed. [[spoiler:His memories are, in fact, real, but it takes several episodes until he finds out.]]
* In ''Series/{{Kikaider}}'' in the four part OVA [[spoiler:It is revealed that Reiko was actually a robot without anyone, including her, knowing. All of her memories were made up and the false memories was purposely made to lead her and her friends to their doom]].
* ''Anime/SailorMoon''
** Chibiusa does this with disconcerting frequency to Usagi's family in the second season. Somewhat justified as she doesn't alter their memories ''too'' badly and doesn't alter their personalities either: she only makes them believe she's the family niece, rather than Usagi's KidFromTheFuture.
** At some point she's also ''at the receiving end'' of it, and it's '''much''' uglier. [[spoiler: She's captured [[HeroicBSOD while at a very low emotional point]], and then Wiseman uses this to make her believe her parents hated her. The MindRape leaves her liable to his manipulations and, after being forcibly infused with Dark Energy, she becomes [[DarkMagicalGirl Black Lady]].]]
** This also happens in the fifth season, where Usagi's family's memories are once again altered - this time to think Chibichibi is Usagi's little sister.
* ''Anime/DarkerThanBlack'': Gemini Of The Meteor has [[spoiler:Suou who finds out she is not exactly who she thought and was given Fake Memories of a childhood she never had]].
* In ''Anime/MobileSuitGundamSEEDDestiny'', Fake Memories are used in concert with LaserGuidedAmnesia to keep the [[{{Tykebomb}} Phantom Pain]] pilots in line. Also implicitly used on [[spoiler: Neo, who is actually Mu with TraumaInducedAmnesia.]].
* In ''Anime/YuGiOhGX'', Yusuke Fujiwara gives everyone fake memories of him being their childhood friend so he can infiltrate the school grounds. Judai Yuki was unaffected and eventually confronts the guy.
* This is a central trope in ''Anime/YuGiOhZEXAL'', when we learn that [[spoiler: [[ManipulativeBastard Don Thousand]] toyed with the PastLifeMemories of the Seven Barian Emperors to fill them with hatred and resentment before they perish as part of his EvilPlan, after of course making the necessary arrangements to make sure a cruel demise strikes them early]].
* In ''Anime/TigerAndBunny'' [[spoiler:Albert Maverick, the CEO of [[ShowWithinAShow HeroTV,]] has the [[DifferentlyPoweredIndividual NEXT]] ability to implant and alter memories. He uses his powers twice on Barnaby in order to frame a well-known NEXT criminal for the murder of the latter's parents (though it's implied that his manipulation of Barnaby's memories is ''far more extensive'' than what was shown on-screen), and also on a number of other characters to make them [[{{Unperson}} forget Kotetsu's very existence]]]].
* In ''Literature/{{Another}}'', Class 3-3 is cursed by the presence of [[spoiler:an extra student who's already dead]]. While they're aware of the presence in general, working out the specifics is impossible because everyone, [[spoiler:including the "Extra"]], has their memories altered as if things were like that the entire time. Even paperwork is changed to reflect this. Only after graduation can anything be fully pieced together because everything reverts back to normal.
* The type-6 Probes in ''Literature/BlondeBombshell'' are outfitted with, among other things, fake memories to allow them to blend into society better. [[spoiler:Lucy Pavlov has been trying her damnedest to erase hers.]]
* In ''Manga/SnowWhiteAndSevenDwarfs'', Nakanoshita has the ability to implant these in people. One notable victim is [[spoiler:Uzuki, leading to a tragic moment on her deathbed when her real memories start resurfacing]], at which point Takeru reinforces the Fake Memories so as to LetThemDieHappy.
* In ''Manga/{{Gintama}}'', Kintoki does this to the residents of Kabukicho [[spoiler: replacing Gintoki with himself as the main character of the story]]. Only Tama (robot) and Sadaharu (dog) are immune.
* In ''Anime/YuGiOhTheDarkSideOfDimensions'', Aigami altered the memories of everyone in Domino City, implanting the notion that he was a new student at Domino High School.
* In ''Manga/OnePiece'', [[spoiler:Charlotte Pudding]] ate the Memory-Memory Fruit, which grants the power to pull other people's memories from their heads like a strip of film (rendering them unconscious in the meantime). Once extruded, the memories can be cut, spliced, and otherwise edited like the film that it resembles.

[[folder:Comic Books]]
* ComicBook/{{Wolverine}} of the Comicbook/XMen is notorious for this; for a while there, anything he wasn't amnesiac about was probably a Fake Memory. The confusion has mostly been cleared up by now, however.
* ComicBook/{{Cyclops}} had a number of these for years, regarding his family and the nature of the accident that damaged his brain and powers, partly due to the real head trauma and partly due to Mister Sinister's tinkering.
* The {{retcon}}ned second team of X-Men, gathered to rescue the first from the clutches of a mad, living island, had this happen to them in a way. Xavier needs trained soldiers so he delves into their minds and speeds up their perception of time. They imagine many, many months of socializing and training and being generally awesome before they go out to rescue the X-Men. And then most of them die. Out of the survivors, one of them turns evil out of revenge and kills a lot of sentients.
* ''ComicBook/{{Runaways}}'' takes this trope to an extreme. It turns out that sixteen-year-old Victor Mancha is actually [[spoiler: a cyborg built just a few years ago]] and that his entire life up till then is one big fabricated memory.
* In ''ComicBook/ScottPilgrim'', the reason why Scott thinks that he was a blameless paragon of virtue in high school, even though he was a dick, was because [[spoiler: Gideon Graves "spiced up" his memories]]. Though [[spoiler: part of that was Scott's own fault as well. It was mainly his "beating up Kim's former boyfriend" part that Gideon messed with]].
* Comicbook/TheFalcon had a major case of FlipFlopOfGod concerning his Fake Memories. Initially, it was said that Sam's past as a social worker was the fake memories, that he was really a pimp and a criminal named "Snap" Wilson. Many other writers tended not to deal with it, so it was something of a blur if its was rendered non-canon or not. Flash forward to 2014 and Sam taking up the mantle of ComicBook/CaptainAmerica where we finally find out that the true memories were of him as a social worker and that the "Snap" Wilson memories were ones implanted into his mind by the Red Skull to not only discredit him, but hope that other people would be ''racist'' enough to follow up on it and attack him.
* ''ComicBook/DoomPatrol'' has a minor character under Rachel Pollack's run called the False Memory, whose powers are basically implanting memories into people who only have trouble figuring out when they happened. She's an ally the first time she appears, but the second time she uses her power to insert herself into the team, keeping the Bandage People happy with false memories of barbecuing with Jack Kennedy and George Bush and Robotman with memories of his ex-girlfriend Crazy Jane. However, she also makes Coagula believe she had been sexually assaulted by her nonexistent husband and his buddy when she was 18. Dorothy Spinner, who is already very emotionally disturbed, manages to snap the rest of her teammates out of their funk by refusing to accept the False Memory's lies. When exposed, she states she meant to give the others more meaning in their lives, but Coagula is disgusted at the notion that being raped gave her life meaning.
* Non-villain example: ComicBook/PowerGirl from DC Comics had their original Earth-Two Kryptonian origin dismissed as a fake memory by Arion the sorcerer who reveals to her her at-the-time "true" ComicBook/PostCrisis origin of being his granddaughter who was genetically manipulated to be given Kryptonian-like powers. Later on, it turns out that her new "true" origin was in itself a fake memory and that she was truly an Earth-Two Kryptonian who had somehow survived the merging of the Earth universes to create the ComicBook/PostCrisis New Earth.
* When Rocket Raccoon was retooled for ''Comicbook/GuardiansOfTheGalaxy'', the original ''Rocket Raccoon'' miniseries was retconned to be fake memories created so that Rocket wouldn't remember the ''real'' reason he left Halfworld.
* The ComicBook/New52 was later {{retcon}}ned as this in Franchise/WonderWoman's case. She was given false memories. Even her mother's design was changed in these memories[[note]]The New 52 version of Hippolyta is a blonde but the "real" version is the Post-Crisis black haired incarnation.[[/note]].

* ''Fanfic/{{Betastuck}}'': While playing the game, many of the betatesters did not remember that they were playing a game at all.
* In ''Fanfic/PerfectionIsOverrated'', [[spoiler:Meiko]] has the power to insert fake memories in addition to her ability to [[LaserGuidedAmnesia delete old ones]], and uses this to [[spoiler:convince Mai and everyone else in Fuuka Academy to [[RememberTheNewGuy think they knew]] her and Bachiko]].
* Eirin of the ''VideoGame/{{Touhou}}'' doujin ''The Silence of the Rabbits'' turns out to be quite skilled at this. [[spoiler:Her experiments in cloning were responsible for the creation of Reisen as a SuperSoldier, and Reisen's memories of her past turn out to be these. In addition, Eirin, after finishing off the monstrously evil clone that is responsible for the doujin's copious amounts of NightmareFuel, does a heroic variant of this by rewriting both Reisen and Tewi's memories so that the horrible things they endured at the clone's hands (which necessitated putting their brains into new bodies) is remembered as nothing but a bad dream]].
* ''Fanfic/{{Pokeumans}}'': Pokextinction use Psychics to delete the memories of any witnesses to a transforming Pokeuman or anything relating to their secret war. This means that TheFourthWallWillNotProtectYou.
* A major aspect of FanFic/DividedRainbow.
** Also shows up in its RecursiveFanfiction, FanFic/IntoTheHedge
* Spinel from ''WesternAnimation/StevenUniverse'' fanfiction ''Fanfic/LongTermMemories'' implants fake memories into the Chrystal Gems's minds to make them think they've known her for millenia, and to make them [[spoiler: either think that Garnet died quickly after her first fusion, or to make them forget about Garnet's existence entirely.]]
* In the BadFuture depicted in ''[[https://www.fanfiction.net/s/11033616/1/You-re-my-Density You're My Density]]'' the Ministry of Magic blocks Harry's magic and gives him and his abusive relatives shiny new memories after he throws a fit during his underage magic trial summer before fifth year. When Hermione takes him back in time to SetRightWhatOnceWentWrong this results in a conflict between the Dursleys' treatment of him and his memories of a reasonably-happy average family.
* In ''Series/BuffyTheVampireSlayer'' Dawn is magically inserted into Buffy's life, giving everyone fake memories - but the events of the series still remained the same. Not in the fic ''[[https://www.fanfiction.net/s/9698242/1/Remember-When Remember When]]'', which drastically alters everyone's memories so that Buffy and Spike are in a happy relationship and Spike has been accepted as part of the Summers' family.
* Happened to the Trevans, a couple of minor characters in ''Fanfic/TheKeysStandAlone: The Soft World''. As they explain it, “old friends” Folse and Andela Tarmi arrived at the Trevans' inn, spent several weeks reminiscing about their past together and throwing parties for the staff, and sent the overworked Trevans off on a vacation while promising to look after their inn. However, nine days into their vacation, the spell wore off the Trevans, who realized that the Tarmis were total frauds. They raced back to the inn, only to discover that they were now magically prevented from approaching within sight of it. Cue John and George being enlisted to go see what's going on.
* In ''Fanfic/EmpathTheLuckiestSmurf'', Vanity's duplicate Century has the same memories as Vanity, being duplicated from the mirror that created him in "The Hundredth Smurf" from mainstream Smurfs media. In the fanfiction story "Vanity's Double", Papa Smurf tells Century that if those memories that he had of his past are real to him, then they are real.
** In "Little Sister Smurf Lost", Sassette's origin of being a magically-created Smurf created by the Smurflings also turns out to be a fake memory, one that Avengelica, the spirit that trapped her within a CrystalPrison, made all but Empath believe to be the truth, since he was the only Smurf not present at the time when she was released from her prison to continue living out her life as a Smurfling.

* Used in ''{{Film/Push}}'', by people called [[DepartmentOfRedundancyDepartment Pushers]]. Kira is a very powerful Pusher and once causes one of the guys guarding her to kill his partner by convincing him his partner killed his little brother in a rather gruesome way. The kicker? He never had a brother.
** [[spoiler: At one point Kira is made to think that her entire relationship with Nick was a false memory that ''she'' gave ''him'' and she's been pushing his thoughts the entire time they were together. She even believes that ''she made up the existence of Coney Island''. The reality of a photo taken at Coney Island is the key evidence that causes her to realize that this was a fake memory.]]
* In ''Film/BladeRunner'', the new experimental replicants have literal Fake Memories to give them a semblance of a childhood and more humanity than older models. When they find out, TomatoInTheMirror occurs.
* In the original ''Film/TotalRecall1990'', the main character has visions of a life on Mars that contradicts his memories of a quiet blue-collar life on Earth. He starts to regain his earlier memories with the help of a NoteToSelf, but it turns out ''those'' were fake memories, too, all part of an [[GambitRoulette elaborate]] ManchurianAgent plot. But then, you never really know whether it was AllJustADream anyway.
** And in the book it was based on, people could ''buy'' as entertainment, fake memories of being an action hero working for the government. Problems arose when those memories turned out to be real for the protagonist... Or were they?
** The [[Film/TotalRecall2012 2012 remake]] removes the ambiguity and makes it clear that Hauser did indeed have a change of heart and switched from being Cohaagen's top agent to LaResistance out of love. What Cohaagen was going to do after [[spoiler:killing the leader of LaResistance]] was to implant Hauser's pre-HeelFaceTurn memories in him, so he could get his agent back.
* ''Film/DarkCity'' had an entire city of people whose memories were removed, remixed, and reinserted thousands of times. One police detective figures it out and commits suicide to escape.
* In ''Film/TheIsland'' the clones are revealed to be given fake memories of a life from before they were cloned, tailored to perpetuate the lie, and apparently drawn from a rather limited pool.
* ''Film/{{Moon}}''. [[spoiler:A few weeks from the end of his solitary three-year contract on the Moon, the protagonist discovers he is a clone of the real Sam Bell. It turns out that the wife he's looking forward to seeing died years ago, his baby daughter is actually fifteen years old, and his body is beginning to break down whereupon he'll be incinerated and replaced with another Sam Bell with the same implanted memories, who'll believe he's just starting his three year contract.]]
* ''Film/{{Memento}}.'' Turns out that Leonard, unable to make new memories since being attacked, [[spoiler: has not only been intentionally lying to himself in order to give himself fake clues to get revenge on people he's taken a dislike to in the last five minutes... but he's also purposefully remodelled some of the aspects of his life from before his laser guided amnesia struck as a way of dealing with the guilt of killing his wife]].
* ''Film/{{Inception}}'' is a process of implanting false beliefs or ideas into a person's mind, which is usually regarded as impossible. However, the plan is to infiltrate a person's dream and make him believe he's on a VisionQuest but instead of finding his true feelings hidden in his subconsciousness, the revelation at the end will be something prepared by the attackers. When the person wakes up, the memories of the dream will fade, but the belief that he resolved his internal conflict will remain and the fake revelation become part of his consciousness.
* In ''Film/TheWolfman2010'', [[spoiler:as a child, Lawrence's memories of his mother's death were re-formed during his time in the asylum so he would believe that his mother killed herself and concealed his real memories of his werewolf father tearing her throat out]].
* ''Film/UniversalSoldierDayOfReckoning'': Cloned Unisols can be implanted with false memories of their past lives. [[spoiler:It's revealed that John himself never had a family that was murdered by Deveraux. He doesn't let that stop him from killing Deveraux, and he ultimately holds the government agent who gave him the memory responsible for killing his "family".]]
* In ''Disney/{{Frozen}}'', Grand Pabbie cures a young Anna of the "brain freeze" Elsa accidentally inflicted on her. He also modifies Anna's memories so that she forgets that Elsa has magic. He assures her family that while he removed the magic, he "kept the fun". This is shown by the image of a memory of Anna and Elsa playing in magically created snow replaced by an image of them playing in ordinary snow instead.
* In ''Film/{{Mindscape}}'', psychics can enter people's memories, but their presence in their minds tend to alter the memories in some way. It later becomes a plot point.

* Creator/AEVanVogt's ''World of Null-A'' may be the first example in literature of this trope. Gilbert Gosseyn has a false memory of marriage to Patricia Hardie, who turns out to be the daughter of the leader of a conspiracy that has secretly seized control of the world government. The memory was implanted by the [[TheChessmaster Chessmaster]] to bring him to the attention of the conspiracy, so that he could be killed and resurrected, since [[MyDeathIsJustTheBeginning His Death was Just the Beginning]].
* In ''[[Literature/TheGoldenOecumene The Golden Age]]'' by Creator/JohnCWright the hero Pheathon is attacked by exosolar assassin Scaramouche, except that the attack, and the events leading up to it, never took place. [[spoiler: They were implanted by the villain in order to discredit the hero, and lure him into opening a PandorasBox containing yet another set of false memories, which he removed to avoid lawsuit.]]
* In the TabletopGame/ForgottenRealms novel ''Azure Bonds'', the protagonist Alias is confused to find that people she knows don't remember or recognize her; it develops that ''all'' her memories are fake, because [[spoiler:she's a magical construct who was only given life a few days ago]].
* Tahiri Veila of ''Franchise/StarWars'''s ExtendedUniverse, during her elaborate {{brainwash|ed}}ing. [[BigDamnHeroes She gets busted out]] before the Yuuzhan Vong can finish the job, but still has the implanted memories alongside her own. Cue problems. Later in the series, she actually ''meets the woman whose memories they were originally.''
* Everybody in the City of Elua (but Imriel) in ''Literature/KushielsLegacy'', after a great magical working has been done.
* In ''Literature/TheTravellerInBlack'', Creator/JohnBrunner uses this in one city; an evil magician takes a seat on the city Ruling Council, the better to cause the citizens to make a choice that will increase Chaos in the area. His plan includes implanting Fake Memories in the rest of the Council members that he has always been a member of the Council himself.
* ''Literature/SwordOfTruth'': As a side effect of making the subject RetGone, the Chainfire spell falsifies memories of events that included the subject. Naturally, the characters hanging around with Richard, who was immune to the spell's effects, think ''his'' memories are the fake ones.
* A rare version occurs in ''Literature/HarryPotterAndTheHalfBloodPrince'', where Horace Slughorn does this to ''himself'' in order to erase the guilt of having [[spoiler:given the young Voldemort information on horcruxes]]. Fortunately, he does a sloppy job of it, which allows Harry to [[spoiler:procure the memory from him with some help from a luck potion]].
** A more traditional example was featured in the same book where it's revealed via Pensieve flashback that [[spoiler:Voldemort framed his uncle Morfin for the murder of the Riddles by committing the murders with his wand and magically implanting the memories of the murder in Morfin's mind so that ''he'' believed he had killed them. When the authorities arrived, Morfin confessed to murder on the spot, proved it by giving details only the murderer would know and showed them his wand as proof. He was then sent to Azkaban and Dumbledore only managed to find the real memory through a very powerful Legimency spell which he used on Morfin near the end of the latter's life. The same with the house elf Hokey, made to think she accidentally put a rare poison in her mistress Hepzibah Smith's tea]].
** And in ''[[Literature/HarryPotterAndTheDeathlyHallows Deathly Hallows]]'', Hermione gives her parents fake memories to protect them from Death Eaters during the Second Wizarding War. After the war ended, Hermione found her parents in Australia and restored their memories.
* A peculiar version occurs in Orwell's ''[[Literature/NineteenEightyFour 1984]]'': the citizens of Oceania alter ''their own memories'', in a way, whenever the Party [[RetCon RetCons]] the past. Through the process of doublethink, they can recall past events if need be (hence, if the Party "tells" them to). And of course, recall the previously forgotten and forbidden memory when required by the party to do so. The definition of 'doublethink' and a common ability of non-fictional political animals. One of the points of the book. Monday: 'We are at war with Eastasia and have always been at war wih Eastasia'. Tuesday: 'We are at war with Eurasia, and have always been at war with Eurasia'.
* The "screen memories" experienced by people after they encounter aliens in ''Literature/MoreInformationThanYouRequire''.
* ''Literature/ThePrincess99'' has an example of altered ''and'' fake memories since WellIntentionedExtremist group Birds of Prey does this to their assassins. [[spoiler: Their method is glossing over bad, violent memories with sparkly good ones so that their assasins remain loyal only to them.]]
* Literature/ThursdayNext spends most of the novel ''First Among Sequels'' convinced that she has three children: Friday, Tuesday and Jenny. Jenny is eventually revealed to be a fabrication, placed in Thursday's mind by mnemonomorph Aornis Hades to torment her; Thursday's family have been playing along, laying a place at the dinner table for Jenny and telling Thursday she just left the room and so on, to try and save Thursday from the trauma. The full-on horror comes at the end of the scene, where Thursday has already forgotten the conversation and asks where Jenny is, making one wonder just how many times her family have had to go through this.
* In the Literature/FirebirdTrilogy, the Shuhr are capable of inserting and manipulating memories. The trope is played with, though, in that their changes are undetectable to the victim, which makes it even creepier.
* In ''Literature/StarTrekStringTheory'', a [[SufficientlyAdvancedAlien Nacene]] inserts herself into the starship ''Voyager’s'' crew, and takes the form of Captain Janeway’s sister Phoebe. Almost everyone suddenly has an entirely altered set of memories, in which "Phoebe" was aboard the ship all along. The only ones not affected were the Doctor (due to being a hologram, though "Phoebe" reprograms him), and Harry Kim and Naomi Wildman (due to being slightly out of "quantum sync" with everyone else).
* In ''The Lost Hero'', the first book in ''Literature/TheHeroesOfOlympus'' series, ''everybody'' at the Wilderness School is given fake memories of [[TheHero Jason]] having been there for the whole school year. He even gets a fake best friend and girlfriend.
* In ''Literature/SeptimusHeap'', this is done to the Hunter so as to prevent him from chasing Jenna again.
* During the second to last book of ''Literature/GalaxyOfFear'', an automated system for growing clones impossibly fast and implanting them with the scanned memories of their templates is stumbled upon. Clones with scanned memories usually seem to have different emotional responses to the memories than their templates did. A [[spoiler: literal DarthVaderClone]], looking for minions, gives the facility skin and hair samples scavenged from an abandoned Rebel base, but since these don't come with mind scans the clones are not very useful... yet, when the protagonists find them, these clones can all speak, believe they're Rebels, and have names, even if those don't match the names of their templates.
* ''Literature/TheHungerGames''. [[spoiler:Peeta Mellark]] is subjected to this in ''Mockingjay'' as part of the Capitol's plan to brainwash him and turn him into a weapon against the rebellion. This is achieved through a brainwashing technique called hijacking where they use venom to alter a person's memories. Once the rebellion get a hold of him they try to reverse the effects but it mostly leaves him confused as to which memories are real and not real. After a while he begins to notice that the fake memories are shinier and brighter than the others. In the end [[spoiler:he ends up getting a lot better, mostly through sheer force of will, and he no longer thinks Katniss is a threat to him. In fact, he falls back in love with her and they end up starting a family together. However the effects never truly go away and he occasionally has moments where the hijacking threatens to take over]].
* This is a plot point in the sequel to ''Literature/ThoseThatWake''. [[spoiler: Remak can implant these, and he's done so to Laura.]]
* Literature/TheManWithTheTerribleEyes has gotten his memory rewritten so many times, he's not even sure what his name is anymore.
* In ''Literature/{{MARZENA}}'' the Narrator hints several times that Lauren's memories of her past may not be quite all that accurate. We learn later on that [[spoiler: Lauren's memories were actually incepted inside her head via a virtual reality created from the life of the real Lauren. All that done while she was in a drug induced state, ironically the same process she was using on her patients while working for Marian]].
* ''Frameshift'' by Creator/RobertJSawyer has a side plot where one character's daughter says he molested her. However, it turns out that she went to a therapist (to treat an unrelated condition) who's convinced virtually ''everyone'' has been molested, and implanted memories of this during hypnosis. This turns out to be because she and her sister were themselves molested, so they take pity on her rather than filing a lawsuit.
* In ''Literature/TheGirlFromTheMiraclesDistrict'', [[spoiler:Robin]] was implanted with Nikita's memories, as leaving him as a BlankSlate led to him [[ResurrectiveImmortality repeatedly]] committing suicide in the past, yet leaving him with his own memories was apparently not an option.
* In ''Literature/LeftBehind'', Chaim Rosenzweig is given the fake memory of Jonathan Stonagal killing his partner Joshua Todd-Cothran and then killing himself in a closed United Nations security council meeting, when in truth, as witnessed by Buck Williams who was under the protective hand of God, Nicolae Carpathia killed both Stonagal and Todd-Cothran with one single shot. In ''The Mark'', when Chaim becomes a believer in Christ, he realizes that he and those present in the room with him except for Buck had all been brainwashed into believing that fake memory.
* The backstory of the latest ''Series/RizzoliAndIsles'' novel. Three murder victims are found to have attended a daycare center that was the center of horrific child abuse allegations, but as the investigation continues, it's learned that the accusations were false and that the children had been forced or encouraged to make them up.

[[folder:Live Action TV]]
* ''Series/BabylonFive'' has the "death of personality", an alternative to capital punishment in which the convict's memories and personality are erased by telepaths, and replaced with something that will make him useful to society. In the Season 3 episode "Passing Through Gethsemane", a character discovers that he is actually a serial killer whose previous identity was erased in this way, and he has a breakdown.
* ''Series/BuffyTheVampireSlayer'':
** In "Superstar", everyone gets fake memories of Jonathan being Sunnydale's own resident MartyStu.
** The introduction of Dawn at the start of Season Five. Not only does she believe she's Buffy's little sister, everyone else believes it, too. "You've always had to take care of Dawn."
** The strangeness of this is shown when Faith returns to Sunnydale is Season 7. Dawn is visibly cold to the rogue Slayer, despite the fact that the two have never even met, and Dawn knows she was actually a glowing ball of energy at the time.
* ''Series/{{Angel}}'': Connor is given a set of fake memories when he's removed from the cast, as are most of the other characters he interacted with during seasons 3 or 4.
* In ''Series/TheVampireDiaries'' it is used so often, the plot practically runs on this one. At points in Season 1 it seemed that Caroline's brain was going to melt out of her ears with the frequency that she was being mind wiped by Damon. It's still not that clear what exactly she knew when.
* The ''Series/{{Torchwood}}'' episode "Adam" is another instance of false memories being used to infiltrate the team. Adam also uses them to begin a sexual relationship with a female member.
** It's particularly dark when Adam makes Ianto think he murdered and raped several women; he cracks underneath the guilt, horrified he would do anything so terrible. It was also physically painful for him- he screamed and thrashed in pain with each new implanted memory. [[spoiler: Thankfully, in the end, the team wipes all their memories of the day.]]
** Series/{{Eureka}} did an episode similar to this about Carter's fear of losing those he cares about, especially his daughter.
* An early ''Series/StargateSG1'' episode, the whole team was made to believe Daniel was dead. Naturally, the truth was uncovered through hypnosis.
** Another example - "The Fifth Man" in which an alien with this as a power becomes the fifth member of the team, there all along. Unusually, he's a friendly alien seeking to ally with them, and the pheromone that lets his species do this is extracted and used in a later episode to allow Daniel to infiltrate a Goa'uld summit.
** In another episode, the team discovers a village on toxic planet protected by a force field. Each villager also have a direct mental link to the city computer (like an always available Wiki/{{Wikipedia}} to seek information). When suddenly villagers memory starts to contradict events from the previous days, the team discovers that [[spoiler: the computer can't sustain the energy field due to a power shortage and slowly shrink it. Since it cannot hold as many people, it uses the mental link to send people outside the shield to die and modify the other villagers' memory so no one is mourning the death of people they can't remember]]. Since the team isn't linked to the computer, they are not affected by false memory and can discover the truth.
** And yet another (it appears that Stargate loves this trope): SG-1 was given "memory stamps" to believe they're part of a tiny colony working day and night to keep their civilization going during a massive ice age. Truth is, [[spoiler: the ice age is on the wane, but a privileged class is keeping the workers at it for the extra energy. SG-1 found out and had to be hidden away. Teal'c jinxes the attempt because he forgets he needs to meditate and his symbiote literally can't restore his health until he does]].
** And one more: Mitchell is implanted with fake memories to frame him for a crime. Turns out that [[spoiler: the real murderer erased his own memories of the crime, then grieves over the victim's death and helps SG-1 track down the real killer]].
*** In a later episode, Mitchell uses the same device to let a dying friend of his experience his adventures. It's not like that friend is going to tell anyone.
* In the two-part ''Series/DoctorWho'' story "Human Nature"/"Family of Blood", this is one of the functions of the Chameleon Arch, which turns the Doctor into a human - memories and all. Use of the Chameleon Arch is also noted in the episode [[spoiler:"Utopia", with the Master having Arched himself to escape the Time War]].
* ''Series/StarTrekDeepSpaceNine'' has a particularly effective example, where Chief O'Brien is punished (by aliens) for a crime he didn't commit, and the punishment is to simulate 20 years of prison in his mind while only a few hours pass in real life. In this case, O'Brien is fully mentally aware (after a few hours of rehabilitation) that his memories of prison are fake, but he still feels guilty about certain things he did in his mind. The guilt has a profound effect on his emotional state, [[spoiler: nearly driving him to suicide]].
** Subverted in a different episode where O'Brien realizes his memories don't correlate with reality and something real nasty is going on. Turns out that [[spoiler: O'Brien himself is not real, he's a hidden assassin with fake memories, they were just strong enough for him to uncover the whole deal before dying]].
* An episode of ''Series/TheOuterLimits1995'' had almost the same plot as on ''Deep Space Nine'', with [[{{Series/Frasier}} David Hyde Pierce]] as the creator of a virtual prison which works by implanted memories. However, it works ''too'' well, such that the first prisoner put into it dies of shock after he gets caught up in a virtual riot. Then the creator is himself sent to prison when he's convicted of causing the man's death by negligence. [[spoiler: It turns out this all happened inside of his head after he went inside the virtual prison to save the man. Feeling guilty in creating it, he sent ''himself'' to a virtual prison for twenty years.]] It was titled "The Sentence", fittingly enough.
* It even happened in ''Series/PowerRangersOperationOverdrive'', where they revealed that [[spoiler:Mack Hartford was in fact a robot and his memories of his childhood were implanted by Andrew Hartford, the worst father ever]].
* ''Series/RedDwarf'''s Lister once gave Rimmer memories of having had a girlfriend as a present, but it backfires, and they end up having to do mind wipes. (Of course, that ''too'' backfires due to natural curiosity, and they find out what happened anyway.)
** A problem with this trope is lampshaded when Rimmer wonders how he could have his appendix out twice, and why he ended up dumping this girl who wanted him to get a proper job and a stable relationship -- something Rimmer wants but Lister hated.
* The ''Series/{{Millennium}}'' episode [[spoiler:"Through a Glass, Darkly"]] involves an accused kidnapper/child killer. False memories of his crimes have been implanted not only in the minds of the victims, but also in the alleged culprit. Even Frank is misled.
* In the "Workforce" episode of ''Series/StarTrekVoyager,'' the crew is brainwashed to believe that they belong on the planet they are being forced to work on.
** In "Course: Oblivion" the ''entire crew'' discovers their memories are fake. [[spoiler:They're actually not the ''Voyager'' crew at all, but Silver Blood duplicates who ''think'' they're the originals.]]
** In "Memorial", the members of a recently-returned away team start having memories of a horrific massacre, to the point of experiencing various forms of PTSD. Turns out [[spoiler:the actual massacre had been committed centuries earlier, and a system had been created to project the memories of the massacre into the minds of passers-by, in order to ensure as best they could that it would never happen again]].
* In the ''Series/StarTrekTheOriginalSeries'' episode "Day Of The Dove", the entity using the ''Enterprise'' crew and Klingons against each other plants memories of Ensign Chekov's brother Piotr being a victim of a Klingon massacre. After he [[RoaringRampageOfRevenge goes off to seek vengeance]], Sulu points out to Captain Kirk that Chekov doesn't have a brother.
* ''Series/StarTrekTheNextGeneration'':
** One episode has Geordi leave for a two week vacation and come back full of stories, only to find out that the Romulans abducted him just after he left, implanted fake memories of the vacation he was supposed to be taking and hypnotized him in an attempt to turn him into a sleeper agent.
** Another episode featured an alien who altered the memories of the crew and the Enterprise's records and infiltrated them as a never before seen crewmember. He planned to use the Enterprise's superior weaponry to win a war for his side.
* ''Series/{{Battlestar Galactica|2003}}'': "I'm not a Cylon, I'm Sharon Valerii. I was born on Troy, my parents were Katherine and Abraham Valerii." BUZZ - Wrong. [[spoiler:"I am Samuel T. Anders. I was born on Picon, I went to Noyse Elementary School." BUZZ - Wrong.]]
* The point of the ''Series/{{Dollhouse}}''. Its a company which takes operatives called 'Dolls' who they can program to be whomever they want; prostitute, spy, medical officer, the list goes on. Each time the Doll has a full set of memories, at least until its wiped an a new set is downloaded. Except, what happens if a Doll begins to keep his or her memories?
* In mid '90s TV series ''Series/NowhereMan'' a man comes out of the bathroom to rejoin his birthday party. No one knows who he is. It's a conspiracy. He travels around much like the Fugitive, even visiting his mother at one point. She doesn't know who he is. All the while he is being pursued by some secretive organisation who clearly must have manipulated everyone. In the end we learn he isn't who he thought he was. Everything up until he left the bathroom were implanted memories.
* As of the end of ''Series/{{Heroes}}'' Volume 4 [[spoiler: Sylar has been implanted with the suggestion that he is Nathan Petrelli, if not with the man's actual memories. His ability to read the history of any object he touches, and his ability to shapeshift will presumably fill in the blanks]].
* During season 4 of ''Series/{{Alias}}'' a man was implanted with fake memories to make him believe he was Arvin Sloan.
* In a season 4 episode of ''Series/{{Supernatural}}'', [[MeaningfulName Dean "Smith" and Sam "Wesson"]] work for a large corporation, where they stumble upon a deadly ghost. After they instinctively work to get rid of the ghost, and both quit their jobs to "hunt" full-time, [[spoiler: the angel Zachariah, who was disguised as their boss, appears and explains to Dean that he gave them fake memories to show Dean that hunting is in his blood; no matter ''who'' he is, he is always a hunter]].
** Of course, [[spoiler:Zachariah]] is obviously trying to push Dean "Smith" away from his "job". He offers him a huge bonus but wants Dean to be, effectively, chained to his desk for the next several years with no social life or any other thoughts but work. Not many people, especially young people, would be thrilled by this prospect.
* This is done to John in an early episode of ''Series/{{Farscape}}''. A group of Delvians make him think he is married and his wife is with him on the planet, complete with fake memories of her being involved in all of his adventures. The point is to distract him and fracture his mind so they can get to Zhaan. Interestingly, he doesn't discover the truth on his own and is only released from the delusions when one of the bad guys has a change of heart.
* In one episode of ''Series/LegendOfTheSeeker'', this was used by a murderer to make someone else believe they had committed the crime. Especially tricky because not only would the person with the fake memories admit to the crime under Confession, but once the heroes had figured out that fake memories were involved, the killer ''planted the memories of planting the previous false memories'' in yet another innocent person.
* Integral to ''Series/BlakesSeven'''s first episode (and unfortunately dropped after that). [[BlatantLies Ordinary civilian]] Blake [[TomatoInTheMirror discovers that he was once a famous revolutionary]] who got captured, was forced to renounce the rebellion he'd led and had his memories replaced in order to turn him into a model citizen. Later, [[TheEmpire the Federation]] gets Blake convicted of child molestation by modifying the memories of children so they'd remember being attacked by Blake.
* ''Series/StarskyAndHutch'': The evil conspiracy in "The Set-Up" manufactures untraceable assassins by [[BrainwashedAndCrazy brainwashing]] random people and giving them memories that make them want to kill the target.
* Season 2 of ''Series/{{Haven}}'' appears to indicate that [[spoiler:Audrey's memories are fake and that she's really Lucy Ripley, when the real Audrey Parker shows up]]. [[spoiler: But then it turns out that she's not Lucy either. She's seemingly ageless, and returns every 27 years with a new set of someone else's memories. She was Sarah Vernon in 1956, Lucy Ripley in 1983, and now Audrey Parker in the present.]]
* ''Series/LawAndOrderSpecialVictimsUnit''
** In one episode, a young woman "recalls" that her father sexually abused her in her youth after a psychiatrist "recovers" memories of the abuse. In typical [=SVU=] fashion it goes downhill from there, with the father being vilified as a monster by everyone, including the [=SVU=] department and his own family, culminating in [[spoiler:the father being shot by his other daughter in a misguided attempt to protect her sister from him. [[AcquittedTooLate Only then does the truth come to light]]]].
** A similarly themed episode goes in a different but still typically dark direction. When her imprisoned father reaches out to her, a young woman testifies in court that the testimony she gave as a child that sent him to prison for raping her was false and that her mother had convinced her the rape took place. [[spoiler:Her father's conviction is overturned; however, she ends up unsure if her mother convinced her as a child that her father raped her, or, as the prosecutor argued, her father convinced her as an adult that he didn't.]]
* In the third season of ''Series/{{Fringe}}'', Olivia is trapped on [[AlternateUniverse the Other Side]] and is given fake memories of [[FanNickname Fauxlivia's]] life. Eventually Olivia starts to adopt Fauxlivia's personality, mannerisms, and skills, and for a time she truly believes that she ''is'' Fauxlivia.
* ''Series/OnceUponATime'': The entire town of Storybrooke is full of fairy tale characters with IdentityAmnesia who were given false memories that make them believe they are normal people. Jefferson (The Mad Hatter) has memories of both identities, which drives him nearly mad. Regina (The Evil Queen) and Gold (Rumplestiltskin) both also know who they really are (as the enactor of the curse and the creator, respectively), and they presumably have fake memories that allow them to blend in with their amnesiac neighbors, but these memories have no effect on them.
* On ''Series/{{Sisters}}'', second-youngest sister Georgie's therapist queries whether she had been molested by anyone, citing that it is frequently a cause of the depression and anxiety that she's been battling. That very night, Georgie apparently has a flashback of her father touching her inappropriately. Within weeks, she's not only convinced that her father repeatedly molested her, she accuses her mother of turning a blind eye to it and her sisters of being in denial as well (when they repeatedly deny being similarly abused), claiming that it would explain the myriad of problems that ''they've'' had, accusing her husband of being unsupportive, ultimately cutting them all out of her life, all with her therapist's encouragement. Only months later, watching one of her sisters, a doctor, examining her ill son, does she realize that what she remembered was not her father abusing her, but ''examining'' her (he was a doctor as well). She's horrified to realize that the whole thing was a ploy by her therapist to isolate her from her loved ones and ultimately seduce her.
* Agent Phil Coulson, of ''Series/AgentsOfSHIELD'', was given memories of a beautiful tropical paradise to account for his recovery following his death at the hands of Loki in ''Film/{{The Avengers|2012}}''. Every time someone mentioned Tahiti, the place where he supposedly recovered, he parrot back, "It's a magical place." [[spoiler:When he found out the truth, he responded, "It sucked!"]]
* ''Series/TotalRecall2070'': Olivia Hume's memories have been tampered with. She used to be a woman named Carol, but [[MegaCorp Rekall]] used a brain implant to wipe her mind and use her as a spy.

[[folder:Other Sites]]
* [[http://www.scp-wiki.net/scp-1211 SCP-1211 ("King in the Castle")]]. When a man 35 years of age or older spends enough time in the Castle, it implants memories in him of being an Irish king of the distant past during a time of war with rival clans.

[[folder:Tabletop Games]]
* ''TabletopGame/DungeonsAndDragons 3.5'' has a spell called ''Programmed Amnesia'' which allows you to remove and add memories on the affected target. The caster could give the target a whole new life and new personality.
** There is also a less powerful spell call [[http://www.d20srd.org/srd/spells/modifyMemory.htm modify memory]] that still has power perversion possibilities.
* The Fetch from ''TabletopGame/ChangelingTheLost'' are magical doppelgangers created by the True Fae when they abduct a human. The Fetch live out the lives of the people they've replaced, oblivious to the fact that their whole life is a shame...until the taken human, now a Changeling, escapes from Faerie. Most Fetch aren't aware anything's amiss until this happens, and most take the news they are fakes with memories stolen from a small piece of a person's soul poorly. Of course, sometimes the Fetch's memories are imperfect to begin with...
* In ''TabletopGame/PsionicsTheNextStageInHumanEvolution'' the Memory Alteration, Improved Memory Alteration, and Psychic Surgery talents allow you to add, remove, and alter memories.
* In ''TabletopGame/EclipsePhase'' it is possible to implant these via psychosurgery. The "Edited Memories" trait indicates that a character has them as part of their backstory.
* There a several magical abilities in ''TabletopGame/{{Exalted}}'' that can modify or remove memories. Most such effects cause false memories in the place of whatever was tampered with. For example, the Sidereal charm Avoidance Kata teleports the user out of a fight and makes everyone present forget that he was ever there to begin with. If the Sidereal has done something important during the scene, then those present misremember the deed as being done by someone else.
* The Nazzadi in ''TabletopGame/CthulhuTech'' were given an entirely fake history, including fictional memories, when the Migou were creating them to conquer Earth. Finding out how badly they'd been manipulated triggered a HeelFaceTurn.

[[folder:Video Games]]
* The UrExample of this in video games is ''VideoGame/ShinMegamiTenseiII'': [[spoiler:Hiroko was implanted with fake memories of being a [[KnightTemplar Temple Knight]] in order to conceal the fact that she was forcefully used in an experiment as the surrogate mother of Aleph]].
** ''VideoGame/DigitalDevilSaga 2'' has a horrific form of these, [[spoiler: coupled with DemonicPossession. Turns out there's this virus that can transform you into a demon. Certain cases are worse than others, some reaching the degree where your mind is essentially overwritten and then it's just the demon driving your body. The worst part? The four or five cases where the victim's mind is permanently obliterated? All of them turned into ''angels'']].
* A more famous example of this in video games is ''VideoGame/FinalFantasyVII'': The hero Cloud came back from HeroicBSOD with [[spoiler:a set of memories half-borrowed from his now dead best friend, Zack.]] Zack's former girlfriend becomes a potential {{Love Interest|s}} (and HilarityEnsues for some time [[spoiler:before tragedy hits]]). Surprisingly subtle {{Foreshadowing}} occurs despite Tifa trying to keep the truth from him, leading to one of video game history's perennial TomatoInTheMirror scenes.
* ''VideoGame/DeusEx'': An email suggests that [[spoiler: JC has these of his younger days, and is actually only a few years old in reality. However, other emails also talk about his time in school, and Bob Page mentions his parents in one taunt, so the truth is still up in the air]].
* The main issue driving James Sunderland through ''VideoGame/SilentHill2'' is that he has immersed himself in a fantasy quest based completely around a fabricated recollection of his wife's death, which has replaced the truth in his mind.
* Halfquake (including the comics): All victims (including the portoganist) are clones with artificial memories
* The PlayerCharacter in ''VideoGame/KnightsOfTheOldRepublic's'' seems to have a generic and unimportant background, as revealed in a dialogue with Bastila Shan, giving no explanation for the interest the villains are taking in them. This lack of explanation turns out to be due to the relevant memories having been lost and replaced with fake ones: [[spoiler: Everything in their memories until relatively recently is fake. They have been reprogrammed to think they have always been a loyal subject of the Republic, so as to motivate them to help the Republic to find the [[ArtifactOfDoom Star Forge]] -- and hiding the fact that they ''were'' one of the villains.]]
* ''Franchise/KingdomHearts'':
** Pratically the entire premise of ''VideoGame/KingdomHeartsChainOfMemories'', as [[spoiler:the character of Namine]] has the power to rewrite memories.
** In ''VideoGame/KingdomHeartsII'', [[spoiler: Roxas]] has a false past of happy friends and a pretty hometown. [[spoiler: He's really a Nobody, who has to effectively die to wake the player character Sora from a Naminé-induced coma.]]
* ''VideoGame/{{Klonoa}}: Door to Phantomile'' has a TomatoInTheMirror moment at the end to give it a last-second BittersweetEnding.
* Part of the conflict regarding the "School Kids" storyline in ''VideoGame/SuperRobotWars OriginalGeneration 2'' is that the kids on the bad guys' side of the fight are having their memories altered to not only forget their friends, but to see them as enemies.
* In ''VideoGame/VagrantStory'', main character Ashley's generic tragic {{Backstory}} is picked apart through the game to explain his [[CursedWithAwesome incredible fighting prowess]], but neither one seems to quite add up. Ultimately he chooses to leave his past behind him, and [[TheUnreveal we never find out which one is true]].
* As in the page quote, there's some questions throughout the ''Franchise/SonicTheHedgehog'' series about whether the Shadow you play as is in fact the "real Shadow". In ''Sonic Adventure 2'' these questions come about when Rouge finds information on the original Project Shadow, the Biolizard. The question is never actually answered, but the caption before fighting Biolizard refers to it as "the prototype of the ultimate life", meaning that there is a final product: Shadow the Hedgehog. In ''Sonic Adventure 2 Battle'', this is modified to suggest that the ultimate lifeform is either Shadow or Sonic the Hedgehog, although only Shadow has reason to suspect this. In ''VideoGame/SonicHeroes'', it comes up again, as several Shadow Androids are discovered, leading Rouge to believe that Shadow is a robot himself. It's finally settled in (what else?) ''VideoGame/ShadowTheHedgehog'', but only if you take long enough at the final boss to hear Eggman tell you that you're the real Shadow. The various endings throughout the game vary between Shadow accepting himself as real, or as an android.
** [[spoiler: To sum up: Biolizard is created as an ultimate life form. Shadow is then created as the ultimate life form as well, using extra alien DNA. Then, Shadow nearly died, got recovered by Eggman with amnesia. He used Shadow's template to create a bunch of robots. So, Shadow's fake memories are real memories... but since (as Eggman acknowledges) this was not the result of Project Shadow, Shadow the Hedgehog is the "real" one.]]
** At least one of his memories is for sure fake: in ''Sonic Adventure 2'''s Last Story, [[spoiler: his RoaringRampageOfRevenge was set off by Gerald changing his memory of the promise he made to Maria]].
* The ''VideoGame/{{Crusader}}'' games do not reveal anything about the [[SuperSoldier protagonist]]'s past--but one thing that is known is that if he ''was'' genetically engineered, he was never told it, and finds the suggestion surprising.
* [[spoiler:The main character's life before coming to Rapture]] in ''VideoGame/{{BioShock|1}}''.
* In ''VideoGame/StarCraft'', many marines and other low-ranking Terran infantry have their memories altered (usually to remove criminal character traits such as serial killing, cannibalism, etc) using technology; this is called neural resocialization. The technology acts as a RestrainingBolt. Ghosts underwent a similar treatment, but the newest generation of Ghosts just undergo LaserGuidedAmnesia instead (since that's harder to fix). The main character of one of the novels has been resocialized, and several supporting characters in the book have undergone the same treatment.
* ''VideoGame/TalesOfSymphoniaDawnOfTheNewWorld'' protagonist Emil Castagnier's memories of growing up in Palmacosta are vague and lacking in detail. [[spoiler:He's a six month old alter ego of a "demon lord" and thinks he has sixteen years of memories.]]
* In C. E. Forman's InteractiveFiction game ''Delusions'', [[spoiler: the PC is an android, implanted with fake memories about everything]].
* In ''VideoGame/{{Mother 3}}'', [[spoiler:all of Tazmily Village suffers from this. After their world was destroyed, they came to Nowhere Islands via the White Ship and replaced their memories with new ones in order to avoid a similar corruption. This is foreshadowed throughout, such as Duster and his father not really knowing how he got that leg injury]].
* In ''VideoGame/DissidiaFinalFantasy: Duodecim'', this is how Kefka brainwashes [[spoiler: Kuja]] into becoming a full-on antagonist for the next cycle, rather than the AntiVillain he had been up to that point, by giving him fake memories of hating [[spoiler: Zidane]].
* In ''StarWars: VideoGame/TheForceUnleashed II'', Darth Vader and a hallucination of Rahm Kota taunt the protagonist on how he's not Starkiller, redeemed Jedi and the founder of The Alliance To Restore The Republic, but a clone. It is left ambiguous as to whether he was the original Starkiller with false memories of being a clone, or a clone with false memories of being the original Starkiller. And depending on the ending, it might not matter.
-->'''Rahm Kota hallucination''': You're Vader's puppet, just a body filled with the memories of a dead man.
* As a general rule, any event referenced in ''VideoGame/GeminiRue'' that isn't explicitly shown onscreen has at least a chance of having been artificially implanted. [[spoiler:In the end, Kane is the only surviving main character who knows anything of his real backstory.]]
* Trace/Another has the ability to do this to people in ''VideoGame/AnotherCode''. [[spoiler:Bill did this to Richard, to make him think he killed his own wife.]]
* In ''VideoGame/FireEmblemAwakening'', if [[spoiler:Aversa]] survives to the end of Paralogue 22, [[spoiler:she learns that Validar, her former master, had implanted false memories of him saving her as a young orphan. In actuality, he brainwashed her into serving him, killing anyone with any connection to her so that she would never learn the [[AwfulTruth truth]].]] Horrified by this revelation, [[spoiler:Aversa]] joins Chrom's army to help him take down Grima and atone for [[spoiler:her]] past actions.
* ''VideoGame/ProfessorLaytonVsAceAttorney'': One of the things that makes the Witch Trials difficult for Phoenix is that witnesses can simply claim their memories were tampered with by magic and revise their testimony. [[spoiler:The real example is the secret behind Labyrinthia. The people living in the town are all volunteers for a long term hypnosis experiment. Everyone there had their memories suppressed, and replaced with a couple of details. They filled the rest in on their own. Taken further when Eve tampered with people's memories to make it seem like Phoenix had always been a baker in the town]].
* ''VideoGame/ToTheMoon'': The two protagonists work for an entire fake memory ''company''. People on their deathbed hire this company to provide them with fake memories of them doing something that they had always wanted to do in life but were unable to do or had just never gotten around to doing, so that they can die without regrets. The process actually works akin to TimeTravel, in that they cannot simply create a new memory and stick it in somewhere, they have to travel into the "past" and alter it so that future events play out differently in the client's memories.
* ''VideoGame/{{Persona 5}}'': Any time you get a NonStandardGameOver for failing to clear a dungeon before the time limit, it's due to the protagonist mis-remembering events in his HowWeGotHere interrogation after being drugged with too many TruthSerums at the start of the story.
* ''VideoGame/SuperRobotWarsX'': [[spoiler:Both of the protagonists. In reality, they are {{Ordinary High School Student}}s in their 3rd year who both come from a world without HumongousMecha. One day, they were brought over to Al-Warth and inducted into the Order of Mages, complete with false memories of training there for several years.]]

[[folder:Visual Novels]]
* [[spoiler:Takumi]] in ''VisualNovel/ChaosHead''. [[spoiler:Specifically, his life from the age of maybe 12 or so until starting high school.]]
* One of the main uses to which Shiki in ''VisualNovel/TenDaysWithMyDevil'' puts his mind control power is to edit people's memories, facilitating the work of the demons by inserting them into convenient cover roles or making people forget seeing anything unusual.
* In ''VisualNovel/UminekoWhenTheyCry'', [[spoiler:the beginning of [=EP3=] where a young Beatrice meets Virgilia]] turns out to be this. However, this is a variant where [[spoiler:the memory is fake on purpose; it's really just Yasu's memory of his/her time spent with Kumasawa, but with a very heavy layer of fantasy to make it more idealized and magical]].

[[folder:Web Comics]]
* The [[spoiler: main cast]] of ''Webcomic/SchlockMercenary'' had their memories altered, voluntarily since the alternative was being killed for [[HeKnowsTooMuch knowing too much]] about [[spoiler:the UNS's super-soldier and immortality projects]]. Because they ''didn't'' want to stumble back into the same situation again, [[spoiler: Tagon]] made a point of asking their brainwashers to do as good a job as humanly possible, and the only one who left himself a NoteToSelf did it so he could act on a grudge and reminded himself to keep it a secret. [[spoiler: Eventually, Petey reveals to them what happened, and though he can't restore their memories (Except Kevyn's), he offers to subtly alter the fake memories so they can tell them apart from the real ones.]]
* This is one of the [[EpilepticTrees many, many, MANY theories]] regarding Oasis in ''Webcomic/SluggyFreelance''. Like almost anything else concerning Oasis, it's highly uncertain.
* In ''Webcomic/CommanderKitty'', the minds of [[spoiler: android clones]] [[http://www.commanderkitty.com/2012/01/01/seemed-like-a-good-idea-at-the-time/ are altered to "remove imperfect thoughts"]]. This apparently also [[http://www.commanderkitty.com/2012/04/07/all-in-her-head/ includes memories]], seeing how [[spoiler: Android]] Nin Wah remembers the more glamorous story she fabricated to explain her [[ArtificialLimbs cyborg arm]] as what really happened.
* In ''Webcomic/ElGoonishShive'', when Tedd declares that the test he had Sarah perform was a success despite nothing seeming to result from it, Sarah [[http://www.egscomics.com/index.php?id=1427 jumps to the conclusion that Tedd might have transformed her and gave her fake memories of always having been a woman]]. Tedd hurriedly explains that [[SubvertedTrope indeed nothing had happened]] and goes on to explain why that was the case.
* In ''Webcomic/{{Misfile}}'', reality shifted thanks to Rumisiel misfiling Ash and Emily's files. Everyone but those three (and it's implied {{God}} though He doesn't seem to be taking any action) have fake memories that lead them to believe that [[GenderBender Ash was always a girl]] and Emily has yet to be a Harvard bound senior. Rumisiel can't confess his mistake to his superiors since they would likely just make the changes permanent which would alter the main characters' memories as well.

[[folder:Web Original]]
* All of the supersoldiers in the e-novel [[http://neldak.blogspot.com/ E.H.U.D.: Prelude to Apocalypse]] have these, as well as liberal amounts of EasyAmnesia when they stumble too close to the true memories.
* Numerous GenderBender stories involving Magic Transformations have the world reality-shift around the main character, so that everyone sees things as if they had progressed naturally from the beginning in the new reality.
* Paradise by Jon Buck has a bit of an aversion, when characters are TG'd the past is retconned by "Random Omnipotent Being", but they keep their, no longer true, memories... in one story this leads to an oddity. As a woman discovers that she dated someone that in her male life she never actually met.
* The cast of ''Blog/SevenshotKid'' is lousy with this.
* A mixture of someone else's memories and Fake Memories is how [[spoiler:Church lives for years without realizing he's an AI]] in ''Machinima/RedVsBlue''.
* The website "[[http://mandelaeffect.com/ The Mandela Effect]]" is dedicated to the idea that people's memories being at variance with reality might be due to them remembering events which took place in an AlternateTimeline. The name is taken from people who remember Nelson Mandela as having died in prison sometime around the early 1980s when, in fact, he was released alive in 1990 and became the first black president of South Africa in 1994.[[note]]A less paranormal explanation might be that they confused Mandela with another prominent anti-Apartheid activist, Steve Biko, who died in 1977.[[/note]] Other discrepancies reported include [[http://mandelaeffect.com/51-52-united-states the number of states in America]], [[http://mandelaeffect.com/sri-lanka-location the location of Sri Lanka]], and [[http://mandelaeffect.com/berenstein-or-berenstain-bears the spelling of]] "''Literature/TheBerenstainBears''".

[[folder:Western Animation]]
* ''WesternAnimation/FamilyGuy'': A frequent staple of the episodes:
** "Stewie Loves Lois": Peter somehow convinces a judge, who is presiding over Dr. Hartman's medical license hearing, that he, too, was raped during what was supposed to be a prostate exam. It leads to the revocation of Hartman's license and ruination of his career.
* The ''WesternAnimation/AmericanDad'' episode "Vacation Goo" reveals that all of Francine's memories of family vacations were created by a CIA machine Stan borrowed so that he could use the time to watch football.
* ''WesternAnimation/{{Ben 10 Omniverse}}'': The Rooters implant fake memories in the heads of innocent children they had mutated creating a false backstory about them having alien blood and Kevin's father being an Osmosian Plumber and an old partner of Max.
* ''WesternAnimation/GoldieGoldAndActionJack'', "The Goddess of the Black Pearl" has the villain using a herb to give [[spoiler: Goldie Gold, the personality of the Goddess of the Black Pearl. This would be under DemonicPossession, but the fake king is really Tylar, the Art Director]].
* The original Ultimen of ''WesternAnimation/JusticeLeagueUnlimited'' had implanted memories, covering for the fact that they're all less than a year old. In this case, the memories were supplemented by minimizing contact with their "families."
* ''WesternAnimation/LegionOfSuperHeroes'' the animated series has an episode where Chameleon Boy intentionally undergoes having fake memories written onto him for the sake of espionage...[[spoiler:only for the Legion to discover the bad guys did the same thing with ''their'' shapeshifter]].
* On ''WesternAnimation/XMenEvolution'' ComicBook/{{Magneto}} has Mastermind alter ComicBook/ScarletWitch's memories so that she no longer wants revenge on him.
* Star Swirl's destiny switching spell from ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' apparently alters the memories of any affected by it because they believe that they've been performing said destiny for their entire lives.
* In the ''WesternAnimation/DrawnTogether'' episode "Toot Goes Bollywood" Wooldoor Sockbat, acting as Foxxy Love's therapist, intentionally implants a false memory in her mind of her being gang raped so she'll think she has a FreudianExcuse for being a slut and thus feel better about herself. He claims all therapists do this.
* In the ''WesternAnimation/RickAndMorty'' episode "Total Rickall", the Smith family's memories are manipulated so that they believe they know various characters who are actually alien parasites that use those same memories to replicate and create even more characters. Eventually, Morty realizes that the characters can only replicate positive memories whereas the Smiths have plenty of unpleasant memories with one another.

[[folder:Real Life]]
* Human memory is highly fallible and prone to filling in gaps, and is deeply vulnerable to pre- and post- event suggestions of what happened, regardless of what actually happened. Incorrect memories can be formed under a number of circumstances, especially periods of high stress or adrenaline. There is a video of a police officer firing a full magazine, reloading, and firing again, in front of a dashboard camera the officer set himself, and then thinking he only fired his gun twice.
** Another video of a police officer went similar: the police officer, in this case a black woman, stopped her car at a traffic light. An elderly white man on crutches stood on the sidewalk, waiting for the green signal. Suddenly she went out of the car and hurdled abuse on him, claiming he called her a nigger, then threatened violence against him. Dashcam and sound recordings proved he did not provoke her in any way, but she testified that he did before being shown what actually happened, and could not believe it.
* Anton-Babinski syndrome, or Anton's Blindness, is a condition in which an individual is blind to a large degree, but makes up an entirely false imagination, experience, and memory of vision. It's very rare, but interesting enough to be seen in ''Series/{{House}} MD''.
** Human visual analysis was proved to be error-suppressing. If a little part of the eye's field of vision is partially blocked by something immovable ''relative to the eyeball'', this part is filled with "repaired" texture extrapolated from the rest of the scene. Sorry guys -- error tolerance, lack of artifacts, good signal-to-noise ratio and high sensitivity seem to not to be fully compatible qualities.
** The reverse can also happen, a phenomenon known as Hysterical Blindness. A person can see completely, but is fully convinced they are blind. (It's tested by having people who are actually blind/them go through a room. They either have close to 0% success, or close to 100% success at key tasks, while people who are actually blind have about 50% success.)
* In the most infamous real-life case of this trope, between 1980-1995 the United States and elsewhere experienced a number of trials in which children's day care center owners and staff were accused of Satanic ritual abuse, based entirely on testimony that was simply impossible, which the individual did not remember until after being questioned. The "recovered memory" testimony was discredited after a psychologist testified that the techniques used for "recovering suppressed memories" were exactly the ones she had been using in research to create false memories.
*** The real clincher was the "Impossible Bunny" experiment. Using the same techniques used to "reveal" memories of abuse, a researcher got somebody to recall meeting Bugs Bunny at Disney Land...something which is impossible, due to Bugs not being a Disney character, but a Warner Brothers one.
*** More generally, it's been demonstrated that even without this prompting many real victims of crime can have their memories falsified, just by things like being shown the picture of a suspect that wasn't the actual perpetrator. The "show-up" where a victim is presented with the suspect on their own, in a picture or personally, is particularly suggestive. Many suspects were wrongly convicted of crimes due to mistaken eyewitness testimony, and only exonerated by objective evidence like DNA testing (it [[FridgeHorror does not do one good]] to think of how many are probably still in prison where this does not exist). In the US, it's especially disturbing that a number of them were sentenced to ''death'' and in some cases came just days away from being killed.
* The most common form of false memory creation operates by something called the misinformation effect. As an example: If you ask someone to recall a scene (say, of a car accident) and the ask them if they saw "''the'' STOP sign" as opposed to "''a'' STOP sign", the majority of participants will report- and sincerely believe- that they witnessed such a signpost, even if there was no such sign in the original scene. This is a major problem with eyewitness testimony interviews.
* There is also the process of refutation. When we receive information, the brain considers it as just it would any other input- say, seeing or hearing it. If if the brain does not have sufficient information to refute this new suggestion, or if the process of refutation is simply disrupted or prevented from occurring properly- which is precisely the function of hypnosis- then we are inclined to accept that information as true.
** For instance, even if you weren't even at an entire event, if a relative or friend mistakes you for being there and insists that you were there, you can end up creating your own memories of those events because you begin to second-guess yourself. "I wasn't there, I'm sure of it...was I?"
* The ease with which false memories can be implanted actually borders on terrifying. There are quite a few cases of bad lineup procedure causing witnesses to 'rewrite' their memories, resulting such absurd things as people getting wrongly convicted merely because they happened to have a ''sign'' above their head, or were the right answer to "Which of these is not like the others?" Perhaps the worst part is that the witnesses may even be flat-out [[IRejectYourReality ''certain'' that their choice from the line-up is the right person, despite whatever later hard evidence proves.]] This frequently leads to harassment of the first person accused of a crime long after they are acquitted, ''and the actual guilty party has been found and convicted''.
* Increasing amounts of research demonstrate that memory is as malleable as ''sand''. It's possible to recall a memory, specifically have someone change a part of that memory through forceful suggestion, and then believe that that's actually what happened. While scary, it has practical applications: soldiers suffering from PTSD can be asked to relive the memory, then use specific drugs (in this case, beta blockers) to rewrite the memory and remove the shellshock. It's not an instant fix, however, requiring multiple treatments.
* Contrary to popular belief, your brain does ''not'' record everything that ever happened to you, so attempts to "uncover" stuff you don't remember will lead to Fake Memories quite often. Your brain only registers impressions, not straight sensory input, and if you weren't paying attention to an event (or never experienced it in the first place), there might be no record of it in your mind. (This is why you can lose your keys and rack your brains trying to "remember" where you left them, and fail -- if you weren't paying attention when you dropped the keys, your brain may not have registered the event at all, and you're trying to retrieve a memory that simply doesn't exist.)
** It is possible to have incredible passive recall, however. This takes several forms:
** Savants capable of recalling entire books, or huge numbers of digits of pi do so by focusing entirely on something they are paying attention to. This variety is no better at remembering things outside of their area of memorization than anyone else.
** Competitive memory champions practice constantly to develop the CharlesAtlasSuperpower variant of this, focusing on honing highly efficient methods of short and long term recall. When they are not actively paying attention to memorizing something, their accuracy drops sharply, but remains significantly above the average person's passive retention.
** The condition known as Hyperthymesia is a rare condition in an individual recalls with great accuracy the the major and minor events of every day of their personal lives. Recall of events outside of their own lives, however, is significantly less accurate.
** The rarest form, [[AluminumChristmasTrees only recently experimentally proven to actually exist]] is true Eidetic Memory. These individuals, of which fewer than 20 have been confirmed so far, are capable of recalling with ''extreme'' levels of accuracy not only their personal lives, but minute details like the weather and minor news stories of any given date past early childhood. Research is ongoing into exactly how they are able to do this, but the current leading hypothesis is that in these individuals the normal mechanisms the brain uses to filter what information is worth memorizing and what can be safely forgotten are disrupted, while the mechanisms that the brain uses to organize and correlate memories and chronological information are hyper efficient. In one test, an individual with true eidetic memory was able to recall with near-perfect accuracy the pairings of major league baseball teams on given dates from the mid 70's. The individual was not a baseball fan.
*** One reason true eidetic memory enjoys the profile it has despite its extreme rarity is it just so happens that one of these extremely few people in the world who has it is Marilu Henner, already a celebrity as an actress (best known as Elaine Nardo on ''Series/{{Taxi}}''). Henner's friend Lesley Stahl chose to involve her in a ''Series/SixtyMinutes'' story on eidetic memory because she recognized that Henner had the condition from how it was described to her. She makes for an ideal subject in the experimental testing that researchers do on people with true eidetic memory because, as a public figure, it's very easy to find out verifiable information about her past.
* Even the collective memory is prone to [[https://en.wikipedia.org/wiki/Confabulation fabricated, distorted or misinterpreted memories about oneself or the world]], at times totally different from recorded evidence.
** Many viewers supposedly remember scenes from ''Film/HarryPotterAndTheOrderOfThePhoenix'' when it was shown in theaters such as Ron playing Quidditch. This is impossible as those things were ''never'' shot for this film.
** When ''Film/BackToTheFuture'' was first released on VHS, a ToBeContinued caption was added at the end to set up the coming sequel. Many people "remember" seeing this caption when the movie was originally in theaters and the filmmakers have had a hard time convincing them that this would be impossible. At the time, most of the films directed by Creator/RobertZemeckis had flopped and so his only hope for ''Back to the Future'' was that it would make its money back. There were certainly no sequels planned at that stage.
** Similarly, many people remember seeing the scene on Tatooine between Luke and Biggs in the original release of ''Franchise/StarWars: Film/ANewHope''. This is a DeletedScene (watch it [[http://www.youtube.com/watch?v=PsDE7o_o26E here]]) which has never been included in the actual film. However, stills from the scene were publicized at the time and the scene was included in the {{Novelization}} and the ComicBookAdaptation. Plus, this was in the days before VHS.
*** The scenes with Biggs on Tatooine ''were'' included on a CD-ROM version of Star Wars called ''Behind the Magic." Some one seeing this might have "remembered" them from the movie, or misremembered them being in the Special Edition version.
*** There are endless debates on the nature of Threepio's silver leg, with some fans clearly remembering the leg being gold in ''A New Hope'' despite the fact that every single behind the scenes photo show it being silver.
** During the 2002 [[http://en.wikipedia.org/w/index.php?title=Beltway_sniper_attacks Beltway sniper attacks]], many witnesses reported having seen a white van; it turned out the killers used a blue Chevy Caprice.
** The Mandela Effect stems from this trope; [[ArkhamsRazor it hypothesizes]] that fake memories are in fact glimpses into alternate universes. Its name is derived from a blog post where the OP said that she thought she remembered Nelson Mandela dying in prison, and shared that memory with several people at Dragoncon 2005, when in fact he was still alive at the time (he died in 2013).
* Last Thursdayism is a [[ParodyReligion satirical]] ([[PoesLaw we hope]]) religious doctrine that claims God created the entire universe last Thursday, and that any evidence of the world existing before then (including our own memories) were implanted by God to trick us.
* [[https://en.wikipedia.org/wiki/Elizabeth_Loftus Elizabeth Loftus]] carried out much of the original psychological research to prove the fallibility of human memory, and repeatedly served as an expert witness in court cases to impress on the jury the inherent unreliability of eyewitness testimony.