When something dramatically outside of normality happens, and the {{Muggles}} are able to see past the {{Masquerade}}, a team (or at the least, a special go-to guy) is often dispatched to erase and/or alter the memories of any witnesses to cover up the abnormality of their mundane lives and keep the existence of the weird stuff a secret (often by using some sort of LaserGuidedAmnesia).

Note: This is ''not'' about [[LaserGuidedAmnesia the amnesia, or about what causes it]]. It's about ''WHO'' causes it. (No, not ''that'' [[UsefulNotes/UnitedNations WHO]], either. ''[[ParanoiaFuel Or is it...]]'')

Compare TheMenInBlack, CleanupCrew. Contrast the more brutal KilledToUpholdTheMasquerade.

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!!Examples:

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[[folder: Anime ]]

* In a lesser form, in ''Manga/TheWorldGodOnlyKnows'' the demons of new hell [[LaserGuidedAmnesia "restart"]](later, they simply changed them) the memories of the girls who's holes got closed.
* ''DarkerThanBlack: Gemini of The Meteor'' features a faction of the military that serves as this for people whom get into contact with the super-powered [[ProfessionalKiller Contractors]]. Witnesses that prove too difficult to catch are simply killed.
* All of the shinigami in ''Manga/{{Bleach}}'' carry around a neuralizer-style device to replace the memories of anyone who gets a glimpse of their activities. They can't control what memories replace the real ones.

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[[folder: Fan Works ]]

* In the ''{{VideoGame/Touhou}}'' FilmComic ''FanFic/OsanaReimu'', [[spoiler:Yukari goes around to [[LaserGuidedAmnesia erase everyone's memories of Rumia]] post-sealing. In most cases it's so that Rumia will be allowed to live a new life, but Reimu is a special case because she's too young to cope with the harsh reality of what happened to [[HeroicSacrifice her mother]] and [[HesDeadJim her friend]].]]
** [[spoiler:Also happens to Rumia herself as a part of her seal, locking her memories away so she isn't crushed by grief.]]
* In the ''Disney/LiloAndStitch''[=/=]''Franchise/StarTrek'' crossover ''[[FanFic/StarlightSeries Starlight]]'', this task is performed by [[spoiler:Dulmer and Lucsly from Temporal Investigations, although in this case it's to rectify the timeline.]]
* One of the main characters of the ''Literature/HarryPotter'' fanfic ''FanFic/TheOllivanderChildren'', Linus, is an Obliviator working for the Ministry of Magic.

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[[folder:Films -- Animated]]
* In ''WesternAnimation/TheIncredibles'', the government had a team like that, that would come in and wipe memories and implant new ones when an undercover Super would screw up and use his powers in the open.
--> '''Rick Dicker:''' "We have to pay to keep the company quiet, pay damages, erase memories..."
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[[folder:Films -- Live-Action]]
* ''Film/MenInBlack'' is probably the best example. Individual MIB teams had the neuralizer, which could wipe memories for a set amount of time and leave them in a hypnotic state so that new memories could be implanted. While they could often do the jobs themselves, and indeed it was part of their function, for larger memory fixing they could call in special task forces that would come out, neuralize large numbers of people, plant evidence, etc.
* In ''Film/MenInBlack II'' they even use a gigantic neuralizer hidden in the Statue of Liberty, capable of wiping the memories of all New York City.
* Lacuna Inc, from ''Film/EternalSunshineOfTheSpotlessMind'' are a non-MIB version, removing memories of bad relationships. They would even set up in the client's home so they would wake up without any idea that something had happened.
* Discussed in ''Film/TheAdjustmentBureau''. The adjusters mention an Intervention Team that takes care of the [[LaserGuidedAmnesia memory resetting]].
* ''Film/{{Paycheck}}'' has Creator/BenAffleck's character routinely undergo memory erasure by his best friend in order to hide his reverse-engineering activities from the authorities (even though reverse engineering is not technically illegal), who have the same memory-scanning devices. Later, the job is performed by TheDragon.
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[[folder: Literature ]]

* The Temporal Corps of Simon Hawkes' ''Literature/TimeWars'' do this to any locals who get involved with them, though they made an exception for Creator/JulesVerne. Not wanting to interfere with the mysterious processes of creativity and stop him writing the books he was supposed to, he kept his memories of time travellers and submarines and such.
* In the ''Literature/HarryPotter'' stories, if a wizard lost control and accidentally used his powers (or some other event that would endanger the safety of the wizarding world), the Ministry of Magic would dispatch a special group called [[SelectiveObliviousness Obliviators]] to see to it that people's memories of the event were altered.
** Additionally, the charm used for such actions can also be used to [[LaserGuidedAmnesia wipe out people's entire memory]], according to ''[[Literature/HarryPotterAndTheChamberOfSecrets Chamber of Secrets]]''.
* In the Literature/ArtemisFowl series, the fairies can wipe the memories of any humans who learn about them, as they do to Artemis and his friends at the end of the third book (they all get better). There are even two different techniques they use. One is a block wipe, which just takes out a huge chunk of memory, but the longer the interval of time taken out, the greater chance there is for permanent mental damage. The other is a fine-tuned wipe which removes specific events, people, etc., but takes a lot longer than a block wipe.
* In ''Literature/RedHanded'', the Alien Investigation and Removal agency does this to recruits who don't make the cut.
* In ''Memento Nora'' by Angie Smibert, there is a memory wiping ''company'' to erase memories of the frequent terrorist attacks. The book revolves around the main characters trying to remember those memories.
* ''Literature/{{Seraphina}}'': The Censors are this for saarantrai which involves trimming the brain's grey matter.
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[[folder: Live Action TV ]]
* Occasionally on ''Series/StarTrekTheNextGeneration'' when the crew would accidentally expose themselves (so to speak) to races that weren't ready for interstellar communication, the doctors would somehow do a little surgery to make those memories go away - basically an AlienAbduction. Dr. Pulaski was more prone to doing it than Dr. Crusher.
* The [[http://en.wikipedia.org/wiki/List_of_magical_beings_in_Charmed#Cleaners Cleaners]] in ''Series/{{Charmed}}''. In order to keep magic a secret from humanity they remove the memories of anyone who sees a supernatural event. They're capable of {{Retcon}}ning reality to the extent of undoing a person's birth, and yet only appeared in one episode relatively late in the show. [[FridgeLogic So where were they all those other times the masquerade was threatened?]]
** The implication is that they're a new institution to deal with the many, many breaches caused by the Charmed ones.
* ''{{UFO}}''. The SHADO organization captures people who see real [=UFO=]s and has its medical department use a drug to erase their recent memories, thus preventing the public from learning about UFO attacks.
* ''TheTroop'' has a little alien whose song causes short-term memory loss so they can cover breaches of TheMasquerade. However, ordinary ear plugs can protect one from the effect.
* In ''Series/{{Heroes}}'', The Haitian is this.
* One episode of ''KolchakTheNightStalker'' had Kolchak narrating the events into a tape recorder, because the government had done this to him, and it hadn't quite taken, or rather not all at once. His memory of the incident ''was'' fading rapidly, and he had to make the recording while he still remembered most of the details.
* The Memory Police in ''Series/UltramanNexus'', who erased the memories of people who saw the Space Beast and Ultraman Nexus.
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[[folder: Tabletop Games ]]
* ''TabletopGame/HunterTheVigil'': As Task Force VALKYRIE are effectively TheMenInBlack, there's a good number of members dedicating to dosing witnesses of supernatural events with "Munin Serum," a chemical cocktail that clouds memories.
* Any kindred in ''VampireTheMasquerade'' with [[MindControl Dominate 3]] can be a one-vamp memory wiping crew. Not only can they make the victim forget, they can implant false memories. However, these memories don't always stay undone...
* A typically dark example from ''TabletopGame/{{Warhammer 40000}}''. Since admitting the existence of an elite army of {{demon slayer}}s would be admitting that there are such things as demons, the Imperium treats the GreyKnights as a state secret enforced by specially-trained psykers. Other {{space marine}}s who fight alongside them go through a lengthy memory-scrubbing afterwards, while Imperial Guardsmen who distinguish themselves are subjected to a hasty process that is both painful and often fatal. [[HeKnowsTooMuch Everyone else is just executed]].

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[[folder: Video Games ]]
* In ''SamAndMax'' season 2, Agent Superball will emphatically deny time travel, even though the machine is parked right in the room. Any continued discussion of it will provoke him to employ his hypnotic, memory wiping powers. This is used for a puzzle later.
* In the first "VideoGame/KnightsOfTheOldRepublic", the Player Character's memory is wiped out before the start of the game and replaced with another.
* In ''VideoGame/{{Ib}}'', after Garry finds out [[spoiler: Mary is really a painting,]] the [[spoiler: dolls]] capture him and force him to play a game with them. If he loses, they make him forget what he learned about [[spoiler: Mary.]]

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[[folder: Web Comics ]]
* Early in ''Webcomic/TheKingfisher'', Helen is used by Vitus as a one-woman MemoryWipingCrew, giving Marc LaserGuidedAmnesia.
* The Erasers in ''Webcomic/SamAndFuzzy'', in charge of keeping the public in the dark about the Underground

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[[folder: Web Original ]]
* The ''Wiki/SCPFoundation'': "Class A Amnesiac administered to all survivors."
** [[http://www.scp-wiki.net/a-man-at-the-top-of-his-profession One story horrifically subverts this]], in that "Class A amnesiacs" are just what agents put down on reports to make themselves feel better. The actual memory loss is caused by a TortureTechnician via MindRape and beating witnesses until they [[TraumaInducedAmnesia no longer remember what happened]]. Thankfully, the indecisive-canon nature of the SCP lets you decide whether this is true or not.

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[[folder: Western Animation ]]
* Professor X often plays this role in early versions of the Franchise/{{X-Men}} such as ''WesternAnimation/XMenEvolution'', wiping memories when TheMasquerade has been blown. During an episode of ''Evolution'' where the Brotherhood show off their powers in the middle of a school football game, he dangerously overexerts his powers by modifying the memory of every spectator. Naturally, the one person whose mind he doesn't ''completely'' wipe is Principal Kelly...
* Played with in ''WesternAnimation/PhineasAndFerbTheMovieAcrossThe2ndDimension''. [[spoiler:The OWCA doesn't have any memory-erasing tools, so they just steal the villain's amnesia-inator.]]
** [[StealthPun Who doesn't remember if he's ever used it before]].
* [[{{WesternAnimation/GravityFalls}} Gravity Falls]] has [[spoiler: The Society of the Blind Eye, a cult dedicated to erasing traumatic memories the townsfolk have of the various bizarre creatures that live in the town.]]

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