History Main / Retconjuration

** Towards the end of the series, Delirium threatens Mazikeem to make her ugly and deformed in the way she had been since the start and retcon reality so she had always been that way. We don't know if she actually did or was just being [[CloudCuckoolander herself]]. This is Delirium we are talking about.

* Nero does this by accidentally creating an alternate timeline in the latest ''Film/StarTrek'' film, attacking the Kelvin and setting Starfleet down on a rather more militaristic bent. [[spoiler:Also Vulcan is gone.]]

Supertrope to EndOfTheWorldSpecial (someone gains the power of Retconjuration near the end to change the world). Compare PeggySue. Contrast RetGone.

* ''Literature/TheMirage'' has this as a major driving force behind the plot. The novel takes place in a MirrorUniverse where the Middle East is a unified democratic entity and the west is a mess of backward christian kingdoms and theocracies. On November 9, 2001, Christian fundamentalists attack the Tigris and Euphrates world trade center towers in Baghdad, sparking a war on terror and the invasion of the Christian States of America. Many years later, when a failed suicide bomber is taken in for questioning, he states that the world is a mirage; that history was changed somehow. An investigation of his apartment turns up a newspaper from September 12, 2001. From ''our world.'' [[spoiler: It's later revealed this entire AlternateHistory was the product of a wish made to a Jinn.]]

* Doing this is [[spoiler: Tsukishima]]'s entire schtick in ''Manga/{{Bleach}}''. With each cut of his blade, he [[spoiler:inserts himself into the target's past, up to the point where they think he's always been in their lives. Are you fighting him? Then he just has to cut you once and he instantly knows all your moves and how to counter them. After all, he taught them to you. Don't you remember? Oh, and if you think you'll be okay if you just avoid getting cut, that won't work either. He can just cut the ''ground'' and give himself infinite preptime to set up as many booby traps in the area as he wants]]. ''[[NightmareFuel Creepy]].''

* Ben Tennyson of the ''Franchise/Ben10'' franchise, at least in the original continuity, can gain this ability by transforming into [[RealityWarping Alien X]]. Due to the transformation being AwesomeButImpractical[[note]]the consciousness of the alien is split into three, including Ben, and ''all of them'' must agree on an action in order for them to do anything, including allowing Ben to become human again[[/note]], Ben adamantly refuses to use it at all. The only time he willingly uses it after the first time he transformed into it was when the universe was completely destroyed and he had to use Alien X to rebuild it.

* Ben Tennyson in the original continuity of the ''Franchise/Ben10'' franchise, can gain this ability by transforming into [[RealityWarping Alien X]]. Due to the transformation being AwesomeButImpractical[[note]]the consciousness of the alien is split into three, including Ben, and ''all of them'' must agree on an action in order for them to do anything, including allowing Ben to become human again[[/note]], Ben adamantly refuses to use it at all. The only time he willingly uses it after the first time he transformed into it was when the universe was completely destroyed and he had to use Alien X to rebuild it.

[[folder:Real Life]]
* Since quantum theory and magic are hard to tell anyway, look up Einstein-Rosen-Podolsky and Delayed Choice Experiment which come quite close to retconning history.

Compare PeggySue. Contrast RetGone.

** Towards the end of the series, Delirium threatens Mazikeem to make her ugly and deformed in the way she had been since the start and retcon reality so she had always been that way. We don't know if she actually did or was just being [[Cloudcuckoolander herself]]. This is Delirium we are talking about.

* Main universe Loki's newer incarnation have their magic defined as ''mucking with the narrative'' yes this means exactly what it sound like. They could theoretically do ''[[RealityWarper anything]]'', in practice however they're limited by the TheoryOfNarrativeCausality and various butterfly effects. Example: So you've retconjured a girl into your uncle's past to create a weakness and defeat him in the present? (''Fear Itself'') That created a woman with very little choice or characterization who'll be rightfully pissed with you. (''Everything Burns'')

Since quantum theory and magic are hard to tell anyway, look up Einstein-Rosen-Podolsky and Delayed Choice Experiment which come quite close to retconning history.

* ''VideoGame/{{Touhou}}'': a weaker version of this is the domain of Keine Kamishirasawa; she's able to "eat" the history of things, which changes the way people perceive the thing whose history was eaten. For instance, during the 8th game, she devoured the history of the human village so that they wouldn't be affected by the dangers of TheNightThatNeverEnds (she restored it later); this way, the village was invisible to pratically everyone, because people would be seeing a reality where humans never settled there in the first place (particularly powerful beings don't seem to be affected by it, though; [[RealityWarper Yukari]], for instance, wasn't affected at all by Keine's ability and could see the village and its inhabitants with no problems).

** Towards the end of the series, Delirium threatens Mazikeem to make her ugly and deformed in the way she had been since the start and retcon reality so she had always been that way. We don't know if she actually did or was just being a [[Cloudcuckoolander herself. This is Delirium we are talking about]].

* Doing this is [[spoiler: Tsukishima]]'s entire schtick in ''Manga/{{Bleach}}''. With each cut of his blade, he [[spoiler: inserts himself into the target's past up to the point where they think he's always been in their lives - and this works on inanimate objects too, to the effect that cutting a battlefield allows him to have set up explosives there.]] ''[[NightmareFuel Creepy.]]'' What makes this even worse is that [[spoiler:he can apply similar changes to ''himself'', allowing him to retroactively memorize opponents' battle strategies, for example.]]

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* ''Webcomic/{{Homestuck}}'': [[spoiler:John]] gains the power to move through and alter canon during Act 6. This is called out as being different from time travel, which happens a ''lot'', in that it is not bound by the requirement to create {{Stable Time Loop}}s and can move through other universes and even into fictional contexts like ''Film/ConAir''.
** One-upped by the process of [[SinkOrSwimMentor learning how to control the power]], whereupon he dumps some oil into ''[[http://mspaintadventures.com/?s=6&p=003341 an Imagine Spot]]''.

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* The ''Year of Hell'' two-parter in ''Series/StarTrekVoyager'' has the Krenim timeship, with a RetGone cannon the ship itself is insulated from ([[spoiler: [[ResetButton unless the effect is triggered]] ''inside'' the ship due to damage sustained]]). The effects are limited to removing things from the timeline, but it can be modified to some things hit by while removing others (this is used for such things like removing a specific species while leaving their planet behind and inhabitable). The captain had spent 200 years desperately trying to undo the damage he inadvertently caused when he first used the ship... by doing pretty much the same thing, but with more careful calculations.

* Germaine uses a "reset button" invented by Foamy in the web series: ''NeuroticallyYours'' to initiate a series reboot.

* Ultimate Loki's power in UltimateMarvel. He can shuffle space and time, insert or erase new identities into history and alter perceptions. He's restricted by being detected by Odin if he uses too much power, so he settles for [[{{Gaslighting}} Gaslighting]] Thor to make him and everyone around think he's crazy.

* Kobik, the Cosmic Cube girl, did this to [[spoiler:Comicbook/CaptainAmerica Steve Rogers]]. His "new" past has him being a loyal DeepCoverAgent of Hydra, when he was originally nothing of the sort. Kobik did this on behalf of a former wielder of the Cosmic Cube whom she has latched on to as a friend and father figure [[spoiler:namely, the Comicbook/RedSkull]].

* In ''Wiki/SCPFoundation'', [[http://www.scp-wiki.net/scp-140 SCP-140]] is a book describing the history of the horrifically evil and extremely advanced Daevite civilization. At the end of the book, they're wiped out. However, any time it gets anywhere near ink, shed human blood, or other fluids suitable for writing, it ''grows'', extending the period of the Daevites and creating new traces of their civilization. When first recovered, the Daevites were squished by Qin Kai in the 3rd century BCE. Now? They were squished by ''Genghis Khan'', about 1400 years later. The reason it's classified Keter is because enough ink could bring the Daevites into the present day, and it's a fair bet current human civilization wouldn't be a match for them. Oh, and just in case you feel safe, '''they don't have every copy'''.
%%* In ''Wiki/SCPFoundation'' one of their charges is a book that chronicles the history of an extremely unpleasant civilization (human sacrifice, cannibalism, functional dark magic, etc.) that was wiped out at some point in the past. Whenever something that could be used to write with comes near the book (blood works best), more is written about the civilization and what was previously written changes, so that a battle that previously ended as a defeat becomes a victory - and suddenly archaeologists start finding evidence of them in the places and times it writes about. The book at one point said that the Daevite civilization had been destroyed around 200 BCE, and now it records the destruction of their empire by Genghis Khan, about 1400 years later. Naturally the Foundation doesn't add to it themselves, but they don't think they've destroyed all of the copies, so they keep checking theirs lest they wake up one day to find the Daevites have suddenly been around the whole time.