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 then removed for whatever reason, and the adaptation is a chance for their place to be restored.

Compare with CanonForeigner, where the original character is made by someone else, and CanonImmigrant where the original character joins the canonical work.

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!!Examples, sorted by the original medium:

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[[folder:Anime and Manga]]
* ''Manga/LoveHina'' has several filler characters who don't appear in the original manga, but as they were created by the original author and don't technically conflict with the existing story, are treated as canonical. The best example is Naru's stepsister Mei, who appeared only in the manga's final chapter, well after the television series [[GeckoEnding ended]]. (Interestingly, a seemingly identical Mei appears in ''Manga/MahouSenseiNegima'', causing fans to wonder if it's a coincidental design holdover or an actual cameo.)
* Hiromu Arakawa, creator of the ''Manga/FullmetalAlchemist'' 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 [=McDougall=], 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 {{Rumiko Takahashi}} is so fond of Ayame, however, that she reportedly considered incorporating the character into the manga anyway. She never did, though.
** She still appears in the finale of The Final Act, [[spoiler: married to Koga, no less]].
* ''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.
* The ''ZatchBell'' manga began with Kiyo discovering Zatch's powers; they didn't meet a "mamodo" team until the next chapter. The anime stuffed what many fans believed to be a non-canonical 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 mamodo were left in the battle, something not shown in the anime. However, [[spoiler:at the end of the manga when all the defeated mamodo show up to lend their powers to Zatch, Hyde is among the mamodo that appear. Apparently in the manga he was defeated by someone else offscreen.]]
* The second season of the ''MagicKnightRayearth'' anime 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.
* ''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.
* A dating sim game based on the ''RevolutionaryGirlUtena'' anime was released on the 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.
* Several ''Manga/DragonBall'' anime filler characters were designed by Akira Toriyama, most notably Grand Kai (Dai Kaio), the hipster overseer of the four Kais who appears in the "Otherworld Tournament" arc. Though not heavily involved in the anime-only sequel ''Dragon Ball GT'', he also did a few character designs for it, such as GT-era Pan and the RobotBuddy Gill.
* Hiro Mashima 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.
* ''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.
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[[folder:Comic Books]]
* 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.
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[[folder:Literature]]
* 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.
* 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.
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[[folder:Radio]]
* 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, 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.
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[[folder:Toys]]
* Born Of Plastic? In ''{{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 ''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 collary 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 [[TransformersFilmSeries movieverse]] and [[TransformersGenerationOne G1]] versions of [[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.
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[[folder:Video Games]]
* Akaii 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.
* 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 [[EnsembleDarkHorse Ensemble Dark Horses]] anyway.
* 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.
* While not an official product, LaurenFaust has agreed to help create new characters for the fangame [[MyLittlePonyFriendshipIsMagic My Little Pony: ]][[VideoGame/MyLittlePonyFightingIsMagic Fighting is Magic]].
** More than that...the game was denied the ability to use MLP, so she helped create a brand new license for it!
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[[folder:Western Animation]]
* Disney's Max Goof. Most Disney characters in formal canon have film legacies and iconic VagueAge personalities. In contrast, Max is a CanonImmigrant whose age is usually explicit {{depending on the writer}}, but appearing in ''WesternAnimation/GoofTroop'', several Disney direct-to-video films, and ''AGoofyMovie'' and its sequel has given him some added sense of legitimacy.
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