Occasionally you have a character designed by the creator, but for whatever reason, isn't included in the original work, but instead turns up in an adaptation of the original work. This can at times make the fan task of establishing canon difficult. The character might not fit in the old chronology, but the WordOfGod implies they have a sort of elevated 'legitimacy'. Mostly though, this is a case of the creator feeling they had a good idea after their work was released, and finding a new chance to use it. It may also be that the character was created for the original work and either was removed for whatever reason or there wasn't a good opportunity to introduce the character, while the adaptation is a chance for their place to be restored. Also, the creators of the adaptation may get the original creator to make a new character for their storyline (or at least character's design or outline) to increase it's 'legitimacy' or just to make sure it is consistent with original characters.

Compare with CanonForeigner, where the original character is made by someone else, and CanonImmigrant where the original character joins the canonical work.
!!Examples, sorted by the original medium:


[[folder:Anime and Manga]]
* ''Manga/FullmetalAlchemist'':
** Hiromu Arakawa, creator of the manga, was consulted heavily for [[Anime/FullmetalAlchemist the 2003 anime version]], which eventually developed a completely different plot from the source material.
** The second anime, ''[[Manga/FullmetalAlchemist Fullmetal Alchemist: Brotherhood]]'', was a faithful adaptation of the manga--more or less. Its first episode concerned Isaac [=McDougal=], the Freezing Alchemist--a character created specifically for that episode. He was designed by Arakawa.
* ''Manga/{{Inuyasha}}'' in its anime form has Ayame, the love interest for Koga, who is absent from the manga. Series creator Creator/{{Rumiko Takahashi}} is so fond of Ayame, however, that she reportedly considered incorporating the character into the manga anyway. She never did, though.
* ''Manga/{{Bleach}}''
** Ashido and the Forest of Menos were designed by Kubo, with the full intention of having Rukia encounter him in the manga. However, ExecutiveMeddling meant he didn't have the time to insert the character or storyline into the manga, so the anime went ahead and put the storyline into the anime at the point Kubo had wanted it to appear in the manga.
** ''The 3rd Phantom'' story can be considered semi-canon because it's written by Creator/TiteKubo himself.
** The "Zanpakutō Unknown Tales" arc features the zanpakutou spirits all of which were designed by Kubo. In an interview, he stated that he would have liked to add the Zanpakutō spirits into the manga and that he'd retained control over the designs just in case he inserted them at a later date. Kazeshini has already appeared in the manga, but in a volume omake rather than the story proper. Kubo had also already drawn a slice of life comedy segment for the supplemental data books that featured Renji letting Mayuri modify his zanpakutou spirit from the original baboon/snake into a hot woman. It's the female form that appears in the filler arc.
*** Katen Kyōkotsu's spirit forms are seen in the Thousand-Year Blood War arc when Shunsui squares off against Lille Barro.
* The ''Konjiki no Gash!!'' (''Manga/ZatchBell'') manga began with Kiyomaro (Kiyo) discovering Gash (Zatch)'s powers; they didn't meet a "mamo'''n'''o" ("mamo'''d'''o") team until the next chapter. The anime (''Konjiki no Gash Bell!!''[[note]]Both the English anime and manga (translated in that order) use the "Zatch Bell" name.[[/note]]) stuffed what many fans believed to be a non-canonical mamono / mamodo team in the first episode, Hyde and Eido. This was reinforced by the plot point that everyone's spellbooks would tell its owners how many mamono / mamodo were left in the battle, something not shown in the anime. However, [[spoiler:at the end of the manga when all the defeated mamono / mamodo show up to lend their powers to Gash / Zatch, Hyde is among the mamono / mamodo that appear. Apparently in the manga he was defeated by someone else offscreen, and WordOfGod is that despite a cameo during Megumi's concert early in the series, the animation studio and Makoto Raiku himself forgot about him all the way until the Faudo arc was going on, meaning there was nowhere else to use the team again.]]
* The first season of the ''Manga/MagicKnightRayearth'' anime adds Innouva as TheDragon for Zagato. He's also used in the Sega Saturn game. The second season features two villains not found in the manga, Nova and Lady Debonair, who were designed by CLAMP for the anime. Lady Debonair even makes an appearance (under a different name) in the Tsubasa manga.
* In the first animated adaptation of ''Manga/{{Guyver}}'', Oswald Lisker -- Guyver 2 -- was replaced by a female version, Inspector Valcuria, designed by the original author. She showed up in the manga as a new Guyver looking just like her animated incarnation.
* Creator/EiichiroOda is behind the writing and character design of the tenth ''Manga/OnePiece'' movie ''Anime/OnePieceFilmStrongWorld'', which features as its antagonist the "Gold Lion" Shiki. Shiki [[CanonImmigrant was referred to in the manga]] as the only person in recent history to ever escape ''One Piece'''s [[TheAlcatraz Alcatraz]] Impel Down. In the art book for the movie Oda actually does state that ''Strong World'' is canon for both the anime and manga.
** Other characters include Musshuru (9th movie), Don Achino (Ice Hunters filler arc), and Daddy Masterson (Loguetown filler). The latter was actually supposed to appear in the manga, but was cut because Oda wanted to reach the Grand Line on the 100th issue.
** Likewise for Z and the Neo-Marines of ''Anime/OnePieceFilmZ''. Oda originally wanted to make it canon but just couldn't find anywhere to fit it into the manga timeline without creating plot holes.
* ''Anime/RebuildOfEvangelion'' is being made by almost the same team that created [[Anime/NeonGenesisEvangelion the classic series]]. So it's not surprising that newcomer Mari Makinami was designed by the original character designer on behalf of the original director. The director has described her as the only main character who, unlike the main characters from the original series, doesn't have any aspects of his personality in her. She was later brought over to the epilogue of the original series' manga adaptation.
* Creator/MasashiKishimoto, the creator of ''Manga/{{Naruto}}'', designed Sakura's parents, Mebuki and Kizashi, specifically for ''[[Anime/NarutoTheMovieRoadToNinja Road to Ninja]]''. However, like all of the previous films in the franchise, ''Road to Ninja'' is [[NonSerialMovie non-canon]]. Also, their subsequent appearances have only been in the ''Shippuden'' anime {{filler}}. In [[http://web.archive.org/web/20170924111946/http://naruto.wikia.com/wiki/Thread:164031 this 2014 Fuji TV Kobayashi interview]], Kishimoto reveals that [[TheScrappy Sakura's unpopularity]] and [[CreatorsPest his own antipathy towards her]] are the reasons why her parents are not canon.
* A dating sim game based on the ''Anime/RevolutionaryGirlUtena'' anime was released on the UsefulNotes/SegaSaturn some time after the anime's release, and it is set between the first and second story arcs. Both the scenario and the game's BigBad, Chigusa, were respectively written and conceptualized by Kunihiko Ikuhara, the director of the anime, and [[WordOfGod he himself]] stated that the game is, in fact, canon. Those who watch the game's scenario [[spoiler:will find that Chigusa was an apparition created by Souji Mikage, the BigBad of the second anime arc, and Akio is aware of her existence.]] If for nothing else, Ikuhara's flavor is woven into the script, such as the humor and Chigusa's view on women: the innocent princess Snow White versus the Evil Queen.
* Hajime Kanzaka, the writer of the novel series, wrote out some scenarios for the ''LightNovel/{{Slayers}}'' anime and also wrote the story for the AlternateContinuity ''Hourglass of Falces'' manga. The third anime season in particular is original material that he was involved with; in this case, [[CreatorBacklash he didn't care for the end result.]]
** However, a character poll in Japan had the third-season/anime exclusive villain Valgaav in the top 10, and Kanzaka more or less acknowledges his existence along with a few others.
* WataruYoshizumi designed several anime-only characters for both ''Manga/MarmaladeBoy'' and ''Manga/UltraManiac'', the latter of which was an adaption [[InNameOnly In Name and Character Design Only]]. She included her designs in the Free Talk columns of both volumes, noting that she did still feel an attachment to the characters she designed herself, and pointing out some corners cut in the designs of characters she ''didn't'' provide. (Namely, the fact that Ryouko Momoi had the same eyes as Meiko Akizuki.) She also talked about how she was asked to design a grandfather for Nina in ''Ultra Maniac,'' but her original design was seen as too serious for what was intended to be a comedic character, and was redone... only for this to be overruled, the showrunner declaring that since the original author went to the trouble of designing the character, that was the design they were using.
* Creator/AkiraToriyama has done this several times over for ''Manga/DragonBall'', designing characters for {{Filler}} like the Grand Kai (Dai Kaio), all the movie villains (yes, even Broly), and even contributing some to the less-popular ''Anime/DragonBallGT'' (designing the RobotBuddy Gill and the teenage version of Pan). He also does work for video games, having designed a lot of the content for ''VideoGame/DragonBallOnline'' (including the antagonists Towa and Mira and the Time Patrol version of Future Trunks, ideas that would later turn up in ''VideoGame/DragonBallXenoverse'') as well as Android #21 from ''VideoGame/DragonBallFighterz'' and Shallot, Zanha, and the Hooded Figure in ''VideoGame/DragonBallLegends''.
* Hiro Mashima[[note]]Who is known to [[TrollingCreator troll]] his readers (and by extension, the anime viewers).[[/note]] is responsible for designing the characters and story planning of ''Manga/FairyTail'''s {{filler}} and film. He even acknowledges the "Key of the Starry Heavens" {{filler}} arc as canon in the manga.[[note]]Again, he has been known to troll his readers (and the anime viewers). As a result, it can't really be determined whether or not this arc truly is canon, [[WildMassGuessing which may have been the intent from the start]].[[/note]].
* ''Franchise/LyricalNanoha'' creator Masaki Tsuzuki was the one who created the story for the ''VideoGame/MagicalGirlLyricalNanohaAsPortable'' fighting game adaptations. The original characters from the game have since started showing up in [[Manga/MagicalGirlLyricalNanohaInnocent other Nanoha continuities]] written by the author, and there have been hints[[note]] Specifically, how the HeroicSacrifice of Reinforce that prevented the Materials from showing up in the main continuity may have only delayed their appearance for a decade due to the Unbreakable Darkness' CompleteImmortality[[/note]] in one of the ''A's Portable'' [[AudioAdaptation Sound Stages]] that there's a chance that they may be written into the main continuity sometime in the future.
* Homura and his minions, who were introduced in the anime version of ''Gensomaden Manga/{{Saiyuki}}'' were created by Minekura herself, but had never showed up in any of the manga series.
* ''Manga/SgtFrog'': Katoyama Kiko, a human mecha designer who joined the Keron Army for a while, and also Mois' friends, girls with similar missions to judge and destroy planets, like Maya, Luz and New, who appear in one story of the last season of the original anime, were all created by Mine Yoshizaki but have made no appearances in the manga at all, not even in small cameos.
* Princess Franchise/SailorMoon and Sailor Luna were both created by Takeuchi for ''Series/PrettyGuardianSailorMoon''.
* Akai Ringo of the ''Manga/TokyoMewMew'' Playstation game was designed by Ikumi Mia to fulfill the RPG convention of a [[TheMedic healer]], which helped cement her in the fandom. Unfortunately, many non-players ended up using her as a PossessionSue.
* Masami Kurumada, author of ''Manga/SaintSeiya'', designed the Ghost Saints that appeared in the first movie. Among them, Lyra Orpheus was included in the later chapters of the manga proper, if with a different coloration and a characterization closer to his mythological inspiration.

[[folder:Comic Books]]
* With the Human Torch [[ExiledFromContinuity caught up in a separate movie deal]], Creator/StanLee proposed that a RobotBuddy should replace him in the ''WesternAnimation/TheFantasticFour1978'' animated series. Though Dave Cockrum was originally commissioned to design it, the final design for H.E.R.B.I.E. came from Creator/JackKirby himself, the one who designed the original ComicBook/FantasticFour a decade prior. This didn't stop the poor robot from becoming the possible TropeCodifier for ReplacementScrappy.
* Several characters developed for ''WesternAnimation/TeenageMutantNinjaTurtles1987'', such as Bebop and Rocksteady, were originally designed by Turtles creators Eastman and Laird. Ironically, this was not enough to grant the characters CanonImmigrant status, and Peter Laird, in particular, was adamant about not including them in adaptations he was involved in.
* Merle and Daryl Dixon were both created for ''Series/TheWalkingDead'' with both blessing and input from Creator/RobertKirkman. The trope gets take to its LogicalExtreme in ''Series/FearTheWalkingDead'', with Kirkman creating an entire new cast of characters for use in the sister series.

* An odd example occurs in ''Franchise/StarWars''. The character of Literature/DarthBane was created by George Lucas as part of the backstory for the Sith -- and was mentioned in ''Film/ThePhantomMenace'' novelization -- but wasn't integrated fully into the current canon until his one episode appearance in ''WesternAnimation/StarWarsTheCloneWars''. Under the old pre-Disney canon, Bane was canon simply because Lucas said so, but when he sold the franchise to Disney the rules changed and it was only by making an on-screen appearance that Bane was restored to canon.

* Creator/JKRowling wrote two {{defictionalised}} books from the ''Literature/HarryPotter'' series; Quidditch Through The Ages and [[MonsterCompendium Fantastic Beasts and Where to Find Them]] for UsefulNotes/ComicRelief. She stated that they consisted of stuff from her own notes that she would never have space to use in the books/wrote for her own amusement. She later defictionalized ''The Tales Of Beedle The Bard''.
* In Creator/KimNewman's ''Literature/AnnoDracula'' series, one of the major recurring characters, journalist Kate Reed, is a character originally created by Creator/BramStoker in early drafts of ''Literature/{{Dracula}}'' but removed from the published version.
* Wybie was created by Creator/NeilGaiman for the movie of ''WesternAnimation/{{Coraline}}''. In [[Literature/{{Coraline}} the book]], Coraline spends a lot of time on her own and most of the exposition is her internal monologue. This doesn't really work all that well in movies, so they had to give her someone to talk to, and Wybie was born.
* Creator/{{Channel 4}}'s 1998 SettingUpdate of ''[[Literature/AlicesAdventuresInWonderland Through The Looking Glass]]'' includes Ian Richardson as the Wasp in the Wig, a character Creator/LewisCarroll removed when John Tenniel protested it was impossible to draw.
* Joyeuse makes an appearance in the 2008 adaptation of ''Literature/LaDameDeMonsoreau''. He is one of Henri III's favorites in ''Literature/LesQuaranteCinq'', a novel that takes place seven years after.
* ''Franchise/{{Honorverse}}'''s [[MemeticBadass Victor Cachat]] initially was just an original character created by Creator/DavidWeber's friend and collaborator Creator/EricFlint for a spin-off short story (which also gave the Weber's own one-shot character Anton Zilwicky [[AscendedExtra a much expanded role]]). Soon, though, as Flint effectively became a Weber's equal co-author, Cachat joined the main cast in earnest.

[[folder:Live-Action TV]]
* While [[WordOfGod Damon Lindelof and Carlton Cuse]] have been clear regarding the fact that the ''Series/{{Lost}}'' video game, "Via Domus," is non-canon, some elements of the game were created by the pair and were originally intended to be in the show before being thrown into the game instead. However, despite this claim, some of these "official" elements have ended up conflicting with the show's later seasons. The biggest example is the "[[NoodleIncident Incident]] Room," the room behind the concrete wall in the hatch. The room was intended to be shown in the series but wasn't, and the design was given to the developers to be used in the game.
** However, this room ended up conflicting with the show's portrayal of the actual "Incident." In the game, the room contains a large, busted generator with electricity flowing through it, implying the "Incident" was some sort of electromagnetic generator failure. However, the show's portrayal of the "Incident" was much different: it occurred while [[spoiler:the hatch was still under construction]], involved [[spoiler:a drill hitting a pocket of electromagnetic energy]], and possibly [[spoiler:Juliet detonating a hydrogen bomb over that pocket]]. No room or generator was involved.

* Creator/DouglasAdams always added things and changed continuities in ''Radio/TheHitchhikersGuideToTheGalaxy''. Since the basic work has seen light in ''eight'' media -- radio drama (which came first), [=LPs=], novels (which added Hotblack Desiato and the Disaster Area stunt ship), stage productions (which introduced the dish of the day), TV series (which added the food on the Vogon ship, and the important detail that Arthur had been wearing his bathrobe the whole time), video games (which added lots of backstory and the CatchPhrase "Show No Tea to the door"), a comic, and a film -- this example is particularly famous. Although the film was made after his death, most of the plot-altering elements added to the film (the character Humma Kavula, the Point-of-View gun, the little things that pop up whenever you have an idea on the Vogon homeworld, etc.) were thought up by Adams himself.

* In ''Franchise/{{Transformers}}'' fandom, this manages to mix with the MerchandiseDriven nature of the franchise to form an extreme case... even if a character doesn't have so much as a cameo anywhere in the ExpandedUniverse, if a toy is made, [[SchrodingersGun it's implied that that character is out there somewhere]]. Not that Doom-Lock or Hardtop will ever drop us a line or anything, but we know they're somewhere doing their thing.
** For instance, in 2006, seven years after ''WesternAnimation/BeastWars'' ended, a comic came out showing what all the characters who were in the ''WesternAnimation/BeastWars'' toy line but never showed up in the show were doing.
** Also, with the number of {{Promoted Fanboy}}s involved with TF production, ''never'' count out ''any'' of them when it comes to getting their day in the sun. Doom-Lock was scheduled to appear in the ''Anime/TransformersEnergon'' comic, but Dreamwave went kaput before he could. Hardtop has since appeared in some comics and one text story. The IDW Comics series, on the other hand, has a ''gazillion'' characters of varying importance who have been toy-only - since 1985.
*** Another corollary that the toylines seem to imply is that any given character from any given universe/contiuity has a counterpart out there in the others. This is exemplified by respective [[Film/TransformersFilmSeries movieverse]] and [[Franchise/TransformersGenerationOne G1]] versions of [[WesternAnimation/TransformersAnimated Lockdown and Lugnut]]
* Speaking of Creator/{{Hasbro}} toylines, there are over 50 Generation 4 ''Franchise/MyLittlePony'' characters who have yet to be included in ''Friendship is Magic'' or its ExpandedUniverse. Only ten times have such characters [[CanonImmigrant gone on to appear in one or more actual works]]: Blossomforth in [[WesternAnimation/MyLittlePonyFriendshipIsMagic the show]], Sweetcream Scoops, Sugar Grape, Cherry Spices, Barber Groomsby, Tealove, Bumblesweet, and Diamond Rose in Creator/IDWPublishing's ''[[ComicBook/MyLittlePonyFriendshipIsMagicIDW Friendship is Magic]]'' and in one case ''[[ComicBook/MyLittlePonyMicroSeries Micro-series]]'' comics, and Lovestruck and Forsythia in Creator/{{Gameloft}}'s ''VideoGame/MyLittlePony'' game.

[[folder:Video Games]]
%% * The UpdatedRerelease of ''VideoGame/{{Persona 4}}'' features the character Marie.
* ''VisualNovel/KatawaShoujo'' has Saki Enomoto and Rika Katayama, two "DLC love interests" announced as an April Fools' prank by the development team, with mock screenshots and personality profiles. Ultimately, they were never even mentioned in the final game, but they became {{Ensemble Darkhorse}}s anyway.
* ''Film/WarCraft'':
** The most extreme example is perhaps Alodi, introduced in the manga as the very first Guardian, he wasn't even mentioned in World of Warcraft until he got an Artifact named after him in Legion, and he [[GenderFlip (or rather she)]] was the one who [[spoiler: reveals that Medivh brought the orcs into Azeroth.]]
** Similarly, Durotan and Draka's first canon appearance was in the novel ''Literature/LordOfTheClans'', which came out just before ''Warcraft III: Reign of Chaos''.
** Orgrim is an interesting example. In the Orc Campaign (which was the canon ending for the first Warcraft) the player character becomes the Warchief. In the second game and onwards the orc that did this was named Orgrim Doomhammer. Depending on your interpretation of canon, he's either the player character of Orcs and Humans (which would disqualify him from this trope), or was retconned in.
* The ''Quake'' series features a few of these:
** ''VideoGame/QuakeIIIArena'' introduces UAC Marines Phobos and Crash, the latter of whom was a mentor to [[VideoGame/{{Doom}} Doomguy]]. However, these characters have yet to appear in any installments of the ''Doom'' series proper.
** ''VideoGame/QuakeChampions'' features a character named Galena, who--based on her bearing the Serpent Riders insignia on her armor--appears to have originated from the same universe as the ''VideoGame/{{Heretic}}'' and ''VideoGame/{{Hexen}}'' games (which were published by ''Quake'' developer id Software). However, because of the [[GodDoesNotOwnThisWorld copyright disputes]] between id Software and Raven Software, it is unlikely she will ever make a proper debut in that series.
* ''VideoGame/DragonballFighterZ'' has an OriginalGeneration character, Android 21, created by Creator/AkiraToriyama himself.
* ''WesternAnimation/StevenUniverse: VideoGame/SaveTheLight'' features two characters, Hessonite and Squaridot, both of whom were created with the assistance of the writing crew of the series proper.
* ''VideoGame/NarutoShippudenUltimateNinjaStormRevolution'' features Mecha-Naruto, who was created by Creator/MasashiKishimoto himself, and it was brought into the ''[[Manga/{{Naruto}} Naruto Shippuden]]'' anime for a {{Filler}} arc made to promote the game. Despite the arc airing around the time of the game's release, Mecha-Naruto's origin and storyline had to be slightly altered to better fit the anime, but not the canon continuity.

[[folder: Western Animation]]
* The [[ComicBook/DarkwingDuck comic book continuation]] of ''WesternAnimation/DarkwingDuck'' featured a story called "The Terror of the Time Turtle", which was written by original series creator Tad Stones and introduces a new villain called Chronoduck.