The {{expanded universe}} is a wonderful place, where new ideas can frolic without having to worry about fitting into the {{canon}}. However, sometimes an idea is so interesting that the people who create the canon decide it deserves to be included.

Thus, we have the canon immigrant, who is a character created and nurtured in another medium and, eventually, imported back into the original. Note that, often, surface details are brought in to play off a new movie or TV series; this isn't that. Rather, it's usually a completely new character, who over time becomes more and more popular with the fandom, often filling some niche that was never quite complete before. As a recurring trend, these tend to be female characters (likely to be "spunky") who serve to break up an otherwise male RoguesGallery or ally contingent.

If they're successful ''enough'', they'll be included in new entries in the expanded universe, cross-pollinating concepts. Canon immigrants are often part of an {{adaptation distillation}}, and new, canonical version usually has extra details to tie them into the more complex backstory of the original.

One should always be aware of the Canon Rule of Cherrypicking and BroadStrokes: the fact that one or two elements from an AlternateContinuity or expanded universe have made their way into canon does not make the rest of the alternate continuity or expanded universe canon, as a whole.

A character is more likely to become a canon immigrant, and be embraced as such, if s/he is GodCreatedCanonForeigner.

This applies exclusively to characters or concepts who make the move from adaptation to original material. When dealing with alterations to existing canon that ends up changing the original material, see RetCanon.

This is what every CanonForeigner strives to be.

----
!!Examples

[[foldercontrol]]

[[folder:Batman]]
* Harley Quinn, from ''WesternAnimation/BatmanTheAnimatedSeries'', may be the [[JustForPun quintessential]] example. This PerkyFemaleMinion ([[DarkMistress and girlfriend]]) of the Joker was nearly as insane as he, and the dynamic they created was unique among supervillains. After being imported to TheDCU, she got her own [[Comicbook/HarleyQuinn ongoing series]] that lasted 38 issues and a major role in the short-lived live-action TV series, ''Series/BirdsOfPrey''. She went on to co-star alongside Poison Ivy and Catwoman in ''ComicBook/GothamCitySirens'', as well as appearing in the hit video game ''Videogame/BatmanArkhamAsylum'', and its sequel, ''Videogame/BatmanArkhamCity''. She currently stars in the new ''ComicBook/SuicideSquad'' series.
* Renee Montoya, a police officer and detective of the Gotham City Police Department, was created for [[WesternAnimation/BatmanTheAnimatedSeries the animated series]], but actually appeared in the comics first due to the lengthy production time of the show. She guest starred in numerous Bat-Family titles before being cast as one of the lead characters in ''ComicBook/GothamCentral'', then ''ComicBook/FiftyTwo''. She also [[LegacyCharacter wore the mantle]] of TheQuestion for a time.
* Lock-Up also made the leap to TheDCU, surprisingly before Harley.
* Roxy Rocket is a ''recursive'' canon immigrant -- she originated in the ''ComicBook/TheBatmanAdventures'' comic based on the animated series, then made it into the series, before finally migrating from the series to the DCU proper as an enemy of ComicBook/{{Batgirl| 2009}}.
* Sewer King, also from the animated series, appeared in ''ComicBook/FiftyTwo.'' He appeared in one issue, only to die at the end of said issue.
* There's Raven, Jay and Lark, the Penguin's henchwomen from the {{DCAU}}. Lark was adapted from the comics while Jay and Raven were original characters, and it wasn't until the {{New 52}} reboot that they were made canon.
* ComicBook/{{Batgirl}} is an interesting case. The character was created by DCComics in 1966, at the behest of ''Series/{{Batman}}'' TV-show producer William Dozier. Technically, she appeared in the comics (just barely) before her first broadcast appearance -- but she exists ''only'' because the television show wanted an "official" young female character fighting alongside Batman and Robin.
* The weirdest example is Condiment King: a throw-away joke villain... who got added to the DC Universe as a throw-away joke villain.
* [[WesternAnimation/BatmanBeyond Terry McGinnis]] was seen in a few issues, but these were all set in the {{DCAU}} continuity (this includes his mini-series.) As of Batman #700, however, he's been inserted in the main DCU timeline as both an alternate universe Batman, and in the main universe as a possible future successor to Damian Wayne. Damian in this case fulfills the role Bruce did in the DCAU.
* Mr. Freeze existed in the older works, but it was in ''WesternAnimation/BatmanTheAnimatedSeries'' that his modern characterization was taken from. Even ''Film/BatmanAndRobin'' used that version of the character. Prior to his appearance in the cartoon, he hadn't shown up in comics in almost 20 years
** Mr. Freeze is a double immigrant, of sorts. He was originally called Mr. Zero but he was renamed Mr. Freeze in the 60s live-action TV show and was as campy as could be expected. He was popular enough in the TV show that this characterization and name was then used for the comic version.
* [[OfficerOHara Chief O'Hara]], a fairly important character from the 60s live-action Batman series went on to make scattered appearances in the comics
* A comparatively minor case, but Barbara Gordon's role in ''WesternAnimation/BatmanBeyond'' led to the now DC-comics-canon-for-the-time-being future depiction that she will eventually take on the role of Police Commissioner of Gotham after her father retires.
* King Tut from the ''Series/{{Batman}}'' TV Series appeared as the main villain in a story arc of ''Batman Confidential'', giving him Canon Immigrant status some 40-something years after he first appeared.
** King Tut also makes an appearance in ''WesternAnimation/BatmanTheBraveAndTheBold'', which makes him an immigrant from one TV canon to another (or one TV canon to the DCU to a different TV canon. You decide!).
*** Brave & The Bold also went one step further, having cameos by the likes of False Face[[note]]who had previously inspired the much DarkerAndEdgier canon character Black Mask[[/note]], Louie the Lilac, Bookworm, The Archer, Marsha Queen of Diamonds, The Siren, Ma Parker, Black Widow, Shame and Egghead. All had a cameo in a prison break, IN ONE EPISODE! All of them were one-shot villains from the 60s TV series.
*** Also, Egghead made the jump to the DCU as well, though looking less like VincentPrice.
* Averted thankfully in one-time Franchise/{{Batman}} videogame foe [[VideoGame/BatmanRiseOfSinTzu Sin Tzu]], a should-have-been Ra's Al Ghul character rife with UnfortunateImplications and created with the author ''stating'' that he could end up like Harley Quinn and make the jump. In short, neither Stan nor Jim Lee can sit down and say, "Today, I Will Create [[HappyDays Fonzie]]".
* The DCAU interpretation of Clock King, who was originally a ''GreenArrow'' villain, made the jump to the comics [[RoguesGalleryTransplant as a Batman foe]]. A character with the same name and time motif had appeared on the 60s ''Series/{{Batman}}'' TV show.
* The Phantasm from ''WesternAnimation/BatmanMaskOfThePhantasm'' was modeled after one-shot comic villain The Reaper, who appeared in the now ''{{Retcon}}'' story Batman: Year Two.
* The Batcave was first created for the 40s Batman movie serials. Before then, Bats' home base had always just been Stately Wayne Manor, with a tunnel to the barn which held his vehicles. The producers of the notoriously cheap serial couldn't afford to build a mansion set, so they re-used a cave set which had been used for a different serial, calling it simply "Bat's Cave." The idea worked so well that the comics began including the hideout within a few months, renaming it "the Batcave." The serials also were the first to depict the passage-way to the Bat-Cave to be behind a grandfather clock.
* The 40s serials were also responsible for making Alfred's thin, mustachioed look. When Alfred was first introduced, he was rather fat and was clean-shaven (and a lot more bumbling).
* The Batmobile has had its famous jet exhaust since the 60s series added it.
* The giant penny first appeared in the Batman newspaper comic, before it ever appeared in the comic book.
* The Grey Ghost from ''WesternAnimation/BatmanTheAnimatedSeries'' eventually appeared in ''[[Comicbook/{{Batgirl 2009}} Batgirl]]'', only to be killed off in one of the final issues.
* Lau, the Hong Kong banker from ''Film/TheDarkKnight'' film, made a brief appearance in an issue of ''[[ComicBook/RobinSeries Red Robin]]''.
* Corrupt businessman Roland Daggett from ''WesternAnimation/BatmanTheAnimatedSeries'' appeared as an antagonist in ''Film/TheDarkKnightRises'', though his first name was inexplicably changed to John.
* Scorn, {{Robin}}'s EvilCounterpart from ''TheBatman'', has recently been made canon in the {{New 52}} continuity.
* The new, [[{{Genderflip}} female]] Copperhead from ''[[VideoGame/BatmanArkhamOrigins Arkham Origins]]'' is another unique example like Batgirl and Aqualad. She was created for the video game, but was announced to be coming set to be the {{New 52}} before the game was even released.
[[/folder]]

[[folder:Superman]]
* JimmyOlsen is perhaps the earliest well-known example; he originated on [[Radio/TheAdventuresOfSuperman the Superman radio show]] (though an unnamed copy boy briefly appeared earlier in the comics).
* {{Kryptonite|Factor}} also debuted on the radio show, though it was used earlier (as "K-Metal") in an unpublished comic book story.
* Perry White, editor-in-chief of the ''Daily Planet,'' also first appeared on radio and transitioned to the comics in 1940. The name ''Daily Planet'' was a radio show invention as well.
* Most of the original characters in ''SupermanTheAnimatedSeries'' were simply [[{{Expy}} Expies]] of existing DCU characters (e.g., Luminus and Mala, for Dr. Light and Faora/Ursa), but a few exceptions have had staying power in other media:
** Mercy Graves, Luthor's {{Tykebomb}}''/''BattleButler, follows from Harley's lead. [[HilarityEnsues Hilarity ensued]] -- in the literal sense, not sarcastic -- when both began {{catfight}}ing during the BTAS/STAS crossover movie ''World's Finest.'' It was a draw, with a great deal of ClothingDamage. Harley seemingly emerged the victor when she [[DuctTapeForEverything taped up]] Mercy's mouth and [[HumanShield strapped her to a killer robot]], but Mercy got the last laugh when Harley got publicly arrested (while freaking out about it) and Mercy was seen watching it on TV, ''laughing her ass off.'' She proved popular enough that she would subsequently appear in other animated series like ''WesternAnimation/TheBatman'' (with some [[RaceLift slight changes]]) and ''WesternAnimation/YoungJustice'', and heavily inspired the character of Tess Mercer from ''Series/{{Smallville}}''. Perhaps as a nod to her origin's debt to Batman, she made her first DCU appearance in the Batman crossover ''ComicBook/BatmanNoMansLand''.
** ShockAndAwe-powered Livewire -- ''another'' spunky young female villain.
* ''Series/{{Smallville}}'': Following the ComicBook/InfiniteCrisis reboot of TheDCU, Clark Kent spent his teenaged years dealing with various mutant villains created by the GreenRocks that accompanied his spaceship. Also, Luthor grew up in Smallville (though this had already been established in a previous storyline, it has been repeatedly {{retcon}}ned back and forth).
** DC Comics has made several in-continuity winks to the character of Lionel Luthor, Lex's father. In one instance, Lex hired an actor to play the part of his foster father in order to enroll him at Smallville High School. The actor in question bore a physical resemblance to John Glover. It has since been established that Lionel Luthor is Lex's legitimate father in canon DC Comics continuity. However, instead of being a wealthy businessman, the comic book version of Lionel was a blue collar alcoholic.
** Ma and Pa Kent have also been consistently redrawn to resemble elderly versions of Annette O'Toole and John Schneider (as well as appearing in flashbacks as they did in the series).
** There were plans for [[{{EnsembleDarkhorse}} Chloe Sullivan]] to make the jump to the comics following ''InfiniteCrisis'', but ultimately it fell through. She eventually showed up in a Jimmy Olsen feature.
** As an in-joke, the Smallville versions of Clark Kent, Pete Ross and Chloe Sullivan made a cameo appearance in the first issue of GeoffJohns' ''Teen Titans'' run.
* Professor Pepperwinkle from the 1950s ''TheAdventuresOfSuperman'' TV series is a similar case. He made his first appearance in the comics in 1974. This was probably helped by the fact that the TV series was commonly rerun in syndication, so readers who weren't alive in the 1950s were still likely to recognize him.
* Ursa and Non from [[Film/{{Superman}} the movie]] didn't come to [[{{Superman}} the comics]] until 26 years later. However, they were based on Quex-Ul and Faora, two Phantom Zone criminals from the comics. Zod was an amalgamation of the comics' Zod and Jax-Ur.
* Inspector Henderson first appeared in [[Radio/TheAdventuresOfSuperman the Superman radio series]] in the 1940s and later in ''Series/TheAdventuresOfSuperman'' television series in the 1950s. He eventually appeared in the Superman comics in the 1970s. Since then he has turned up in ''Series/LoisAndClark'' and ''WesternAnimation/SupermanTheAnimatedSeries''.
* Eve Teschmacher, Luthor's female accomplice from the original ''Film/{{Superman}}'' film, showed up in GrantMorrison's ''JLA: Earth 2'' graphic novel as Lex's secretary.
** Otis, Luthor's henchman from the same film, showed up in ''WesternAnimation/YoungJustice'' as the head of Lex's security detail. He's also Lex's P.A. in the ''{{Smallville}}'' continuation comics (where his surname is "[[MythologyGag Berg]]"). ''And'' he had a cameo as a [=LexCorp=] security guard in the mainstream DCU's ''Comicbook/{{Forever Evil}}'' comic.
* The PreCrisis Superwoman, Kristin Wells, first appeared as a time traveling historian in ElliotSMaggin's Superman novel ''Literature/MiracleMonday.''
* The often-mocked (but beloved by some) [[TropeMobile Supermobile]] was originally based on a [[TheSeventies 1970's]] [[MerchandiseDriven toy]] made by Corgi. It only had a handful of appearances in the comics (because readers complained it was silly), but it appeared in several episodes of ''WesternAnimation/SuperFriends.'' [[note]]A very different-looking Supermobile toy was later produced by Kenner for its 1980's ''Super Powers'' line, but that version has never appeared in print. Amusingly, [[LexLuthor Luthor's]] ''Super Powers'' [[TropeMobile vehicle,]] the "Lex-Soar," ''did'' make an appearance twenty years later in ''[[{{Comicbook/Supergirl}} Supergirl: Cosmic Adventures In the 8th Grade.]]'' [[/note]]
[[/folder]]

[[folder:General DCComics]]
* A number of characters from ''ComicBook/KingdomCome'' have found their way into the main DCU continuity, including Cyclone and Magog.
** The KC version of Superman fell through a NegativeSpaceWedgie into the main universe.
** In a less literal sense, for years many characters were written to resemble the ''Kingdom Come'' versions of themselves more; Nuklon becoming Atom Smasher, Mary Marvel's costume change, and more.
** WonderWoman was revealed to own a suit of armor like the one she wore in Kingdom Come. Since she's plenty tough without it, her donning the armor is now treated a signal that things have gotten really dangerous.
** The mainstream continuity Superman temporarily adopted a black background for his chest emblem like his KC counterpart. Like his KC counterpart, it was to mourn mass death (in this case from the Our Worlds at War storyline.)
** And prior to the above NegativeSpaceWedgie KC Superman Batman and Wonder Woman came to the past to meet their mainstream counterparts (which made ''Kingdom Come'' for a time the official future of the DC Universe.) Now it's an alternate earth where the events happened concurrent to our present.
*** ''The Kingdom'' story didn't establish it as "the official future", instead it was the story that introduced the little-used concept of Hyper-Time. The ''ComicBook/KingdomCome'' characters ''assumed'' they were the actual future incarnations of the characters, only to find out by the coda that they were actually just visitors from a vast tapestry of alternate timelines which sometimes feed into the canonical DC Universe. Sharp-eyed readers will recall that clues were being planted that something screwy was going on with the DCU Timeline as far back as the ''New Years Evil'' and ''ComicBook/DCOneMillion'' stories.
* Más y Menos from the ''WesternAnimation/TeenTitans'' animated series were original characters for the TV show who have since made appearances in [[ComicBook/TeenTitans the comics]]. Cinderblock was also created for the show before appearing in the comics.
** The cartoon's version of Gizmo also made the move. Similar to the below-mentioned Ultimate Nick Fury making the move to the classic Marvel Universe, he was introduced as the son of the original Gizmo.
* ComicBook/{{Isis}} from the TV series ''Secrets Of Isis'' was introduced as an inhabitant of [[{{Shazam}} Captain Marvel's]] world of Earth-S, back in the days of the [[PreCrisis original multiverse.]]
** Decades later, the series ''ComicBook/FiftyTwo'' features a version of the character as a probationary member of the Marvel Family, [[spoiler:though she meets her end in Week Forty-Four. She gets resurrected by Felix Faust in a later miniseries]].
* ''WesternAnimation/{{Superfriends}}''
** Wendy and Marvin were introduced in Franchise/TheDCU in 2006 as caretakers of [[ComicBook/TeenTitans Titans Tower]]. However, they were super-genius, black-haired twins, so [[InNameOnly they had really little to share]] with the originals (not necessarily a bad thing). In an ironic twist, [[spoiler: they were viciously mauled by ''Wonder Dog'', resulting in a dead Marvin and paraplegic Wendy. Although, to be precise, the dog they adopted turned out to be a shape-shifting monster controlled by some villain. Oh, and their dad's the Calculator.]] Wendy later went on to appear as a major supporting character in ''ComicBook/{{Batgirl 2009}}'', but was written out of the book just prior to its cancellation. After their comic book debut, the two were also brought over into the ''WesternAnimation/YoungJustice'' animated series.
** Samurai, a Japanese superhero introduced in the same cartoon, would later be brought into the DCU during ''ComicBook/BrightestDay''.
** Before that, the ComicBook/WonderTwins were members of the ''[[Franchise/JusticeLeagueOfAmerica Justice League International]]'' spinoff group ''Extreme Justice'', and reserve members of ''ComicBook/YoungJustice''.
** Apache Chief, Samurai, and El Dorado were also brought over into ''WesternAnimation/YoungJustice'', albeit with modernized, [[CaptainEthnic less-stereotypical personalities]] [[MetaOrigin and origins]]. And in Samurai's case, a GenderFlip.
** Minus the GenderFlip, it had happened before that in ''JusticeLeagueUnlimited,'' with the Ultimen. In fact, ''Young Justice's'' version of Apache Chief, a teenager of Apache descent named Tye Longshadow, even has the same voice actor as JLU's own Apache Chief pastiche... who was known as Long Shadow.
* A number of ''ComicBook/TeenTitans'' characters got Canon Immigrant ''costumes,'' finding themselves redesigned to resemble their animated counterparts.
** And to complete the circle you have the AlternateUniverse in the ''WesternAnimation/TeenTitans'' cartoon comic where elements of the characters' original comic predecessors are integrated into their current designs; Aqualad as a {{Hook Hand}}ed "Tempest" and Speedy as the goatee-sporting gunman "Arsenal" being the most obvious examples.
*** The WesternAnimation/DCNation shorts did this once again due to Mad Mod's powers turning back to time.
* Jackson Hyde/Kaldur'ahm, the second Aqualad and son of Black Manta, was introduced during ''BrightestDay'' months before the ''WesternAnimation/YoungJustice'' cartoon show he was created for debuted (thus making this case similar to the Barbara Gordon Batgirl, who was created for the 1960's ''Series/{{Batman}}'' show but debuted in the comics first).
* The MilestoneComics characters have been incorporated into the DCComics universe, thanks to Comicbook/{{Static}}'s popularity. The Dakota-verse was merged in with an in-universe {{Retcon}}, and only ComicBook/{{Icon}} and {{Superman}} know the truth.
** Additionally, Static later adopted the second costume he wore in the TV series when he joined the Teen Titans.
* The sentient space cruiser Aya was introduced in the ''ComicBook/GreenLantern'' comics just prior to the ''{{New 52}}''. Aya was created by BruceTimm for ''GreenLanternTheAnimatedSeries'', but like Batgirl and Aqualad, appeared in the comics first.
* Persephone, one of the Amazons from the ''Film/WonderWoman'' animated movie, appeared in several issues of GailSimone's ''WonderWoman'' run. This was likely due to Simone having written an early draft of the film's script.
* The Protector originated in animated ''Comicbook/TeenTitans'' anti-drug [[PublicServiceAnnouncement PSA]] and has since appeared in a few cameos in the comics. He also showed up in ''ComicBook/TeenTitansGo'' and ''ComicBook/TinyTitans''.
* The blonde, Cathy Lee Crosby version of Wonder Woman (from the failed 1974 PilotMovie) was made canon in ''InfiniteCrisis'' as the Wonder Woman of Earth-462. Likewise, Drusilla, the CanonForeigner WonderGirl from the [[Series/WonderWoman live-action show]], appeared as her sidekick.
* The Global Guardians originated in the ''SuperFriends'' [[AllThereInTheManual tie-in comic]], before they made a proper in-continuity debut in ''Comicbook/InfinityInc'' years later.
* Partial example: Tommy Merlyn was introduced to the {{New 52}} ''GreenArrow'' shortly after ''Series/{{Arrow}}'' started. The timing and new first name can't be accidental, though the dark archer known ''only'' as Merlyn has long been a foe of GA. In the end, ''Arrow's'' Tommy Merlyn [[spoiler: isn't the villain we know and love. His father, ''Malcolm'' Merlyn, is the BigBad of season one.]]
** Diggle has also made the jump from ''Series/{{Arrow}}'' to the {{New 52}} comic.
[[/folder]]

[[folder:Marvel Comics]]
* ComicBook/{{SHIELD}} agent PhilCoulson first appeared in the films ''Film/IronMan'', ''Iron Man 2'', and ''Film/{{Thor}}'' and ''Film/TheAvengers''. He has since appeared in the ''WesternAnimation/{{Ultimate Spider-Man}}'' cartoon, and later, the main 616 universe.
* As of the ''Battle Scars'' mini-series, 616 NickFury has a son named Marcus Johnson, who bears a suspicious resemblance to the Creator/SamuelLJackson-inspired Ultimate / film-verse Fury. His birth name was actually later revealed to be Nick Fury, Jr.
* From ''WesternAnimation/XMenEvolution'':
** ComicBook/{{X 23}}, who was a cute, female [[OppositeSexClone clone of Wolverine]], similarly crossed the animated series/comic book barrier (and appears in ''VideoGame/MarvelVsCapcom3'').
** She wasn't the only original character on the team, but was ''much'' more popular than Spyke, ComicBook/{{Storm}}'s nephew who was essentially a [[GenderFlip male Marrow]] who even joined the Morlocks at one point. Though he did inspire two similar characters. A modified version of Spyke named "[[SpellMyNameWithAThe the Spike]]" was a member of the Milligan-Allred version of ''ComicBook/XForce'', but he fell prey to the team's infamously high turnover rate. More recently, a canon nephew for Storm named David Evan Munroe (Spyke's name was Evan) was introduced, though it has not yet been revealed if he is a mutant.
* The mutant superhero Firestar was created for ''{{Spider-Man and His Amazing Friends}}'' and, like Spidey's other amazing friend Iceman, was supposed to be a former member of the ComicBook/XMen. She was imported into the MarvelUniverse in ''X-Men #193'', had her own limited series, and later served as a member of the NewWarriors and Comicbook/TheAvengers.
** Also the {{Ultimate|Marvel}} version of Firestar has joined the X-Men, so the circle is complete.
** Aunt May's dog in ''Amazing Friends'', Ms. Lion, became a member of the Comicbook/PetAvengers [[UnsettlingGenderReveal with one small change]].
** The PacManFever villain [[http://www.marvunapp.com/Appendix4/videomansmf.htm Video Man]] appeared in one issue of ''Spider-Man Family'', which was a long MythologyGag to the show.
* In ''WesternAnimation/TheFantasticFour1978'', the Human Torch was replaced by a RobotBuddy named "H.E.R.B.I.E.", not (as one rumour stated) because the producers were afraid children would immolate themselves trying to imitate the Torch, but because there was a solo Human Torch movie deal in the works at the time. Assorted versions of HERBIE have since appeared in the comics as an example of the sort of random stuff Reed Richards invents between adventures. (In the most recent cartoon, "Herbie" is the name of Reed's computer, a capacity he appeared in in ''FantasticFourWorldsGreatestHeroes'' first, being the Baxter Building's AI similar to JARVIS in the ''IronMan'' movies.
** Herbie is currently Franklin Richards' robot guardian, at least in the Franklin Richards one-shots and ''PowerPack'' minis.
** HERBIE's been depicted pretty regularly lately as a model of robot that Reed produced dozens of to perform various odd jobs around the Baxter Building.
* In ''[[{{X-Force}} X-Statix]]'', LatinLover El Guapo was a character added to the X-Statix movie to help it appeal to a broader audience (there aren't many traditionally attractive men on the team), and to hold the ConflictBall by, in being so handsome, disrupting the other characters' relationships. However, the actor playing him is an actual mutant who eventually is asked to join the team for real as El Guapo. He proceeds to do the exact things movie El Guapo was created for, completely on accident.
* The 90s' ''WesternAnimation/XMen'' animated series gave another interesting example in Morph. He was based on a comics character, Changeling, who had been killed in the 1960s, and was KilledOffForReal in the pilot to shock everybody. He proved so popular in his brief screentime that not only was he brought back to life in the cartoon, but an AU version of Changeling who went by the codename Morph was introduced in the comics.
** Two of them!
* Reptil, originally a character created just for ''TheSuperheroSquadShow'' toyline (which came before the show, remember), was introduced in the comics in an ''Initiative'' special in early 2009. He then became a student at ''ComicBook/AvengersAcademy'' the following year, just barely getting a main character spot in a book before the TV show debuted. As a Hispanic character, he filled a demographic need, and, as a FunPersonified PromotedFanboy who can transform into dinosaurs, brought something unique to the table.
* The WesternAnimation/NextAvengersHeroesOfTomorrow debuted in a direct to DVD animated film before facing the Avengers from the past (Earth-616's Avengers) in ''Avengers'' v4 #1.
* The Mutant Response Division, or M.R.D., first appears in ''WesternAnimation/WolverineAndTheXMen'', and has since been introduced in the main ''ComicBook/XMen'' comics continuity starting in mid-2010, and has also spread to a mention in ''WesternAnimation/AvengersEarthsMightiestHeroes''.
* J.A.R.V.I.S., the AI that replaces Edwin Jarvis in the ''Film/IronMan'' films, has since appeared in the comics as the internal computer of [[spoiler: Pepper's armor]]. Apparently, the comics version's personality is modeled on the human Jarvis.
** J.A.R.V.I.S. has since appeared in ''TheAvengersEarthsMightiestHeroes'', ''WesternAnimation/{{Ultimate Spider-Man}}'', and ''WesternAnimation/AvengersAssemble''.
* In a manner similar to Aqualad and Reptil, the new ComicBook/WhiteTiger (aka Ava Ayala) introduced in ''[[ComicBook/TheAvengers Avengers Academy]]'' was created for the ''WesternAnimation/{{Ultimate Spider-man}}'' animated series. The new ComicBook/{{Nova}}, Sam Alexander, was also created for the show and was introduced into the comics during the ''ComicBook/AvengersVsXMen'' crossover event.
* The Anton Vanko version of Whiplash was introduced in the comics in order to have a version of the character similar to the [[CompositeCharacter unique take on Whiplash]] seen in ''Film/IronMan2''.
* Sophie "Chat" Sandoval, a mutant who SpeaksFluentAnimal, first appeared in ''Comicbook/MarvelAdventures SpiderMan'' as a friend of the teenaged Emma Frost, and later the teenaged Peter Parker's girlfriend. A couple of years later, she was introduced to mainstream Marvel in ''Spider-Girl'' (the Anya series) #4.
* Monica Chang was introduced in the [[UltimateMarvel Ultimate universe]] as the [[AffirmativeActionLegacy second]] Comicbook/BlackWidow. She made the jump to the mainstream Marvel Universe in the ''Avengers A.I.'' series, albeit without the Black Widow moniker.
* Geldoff was introduced in ''Comicbook/UltimateSpiderMan'' and gained a counterpart with the codename "Proton" in the mainstream universe in ''[[Comicbook/AvengersTheInitiative Avengers: The Initiative]]''. [[RedShirt He didn't last long]].
** Shockingly, a ''second'' version of Geldoff has now been introduced in ''Comicbook/{{Inhumanity}}''.
* The Chitauri (albeit the version of the [[Film/TheAvengers movies]] rather than the [[TheUltimates original version]]) were introduced in issue 4 of the latest ''Nova'' comic, facing off against the aforementioned Sam Alexander.
** Later, in ''[[Comicbook/CataclysmTheUltimatesLastStand Hunger]]'' #1 the designs of the Chitauri in the ''[[Film/TheAvengers Avengers]]'' movie were used for the Ultimate Chitauri, as this version of the aliens (the original version) had never showed their true form before (as they only appeared shape-shifted into humans in ''The Ultimates'').
** The Chitauri are complicated. In the UltimateUniverse, they were DarkerAndEdgier, and more competent, Skrulls. As such, there were ''already'' "main Marvel universe Chitauri" - the Skrulls themselves. Because of this, whenever an adaptation, even a largely Ultimate-inspired one, wanted shapeshifting aliens, they just used the familiar Skrulls, and whenever the Chitauri show up, they're your standard AlienInvasion. So the very different movie-style Chitauri entering the comics-verse is a case of a Canon Immigrant... even though there are already comic Chitauri, and even a 616 version of them (the Skrulls the Chitauri were based on.) ...No, the headache you're feeling is normal.
* Raza was originally created for the first ''Iron Man'' movie as a {{Race Lift}}ed {{Expy}} of Wong-Chu from the comics. In the 2010 ''Invincible Iron Man Annual'', the Mandarin, while talking about his past, also talks about Iron Man's origin, and mentions Raza being there.
* Combining this with [[ChannelHop Publisher Hop]], after Creator/NeilGaiman won full rights to the character and signed onto Marvel, Angela from ''Comicbook/{{Spawn}}'' appeared in the finale of ''Comicbook/AgeOfUltron'' and later GuardiansOfTheGalaxy.
* The ''Comicbook/AgeOfApocalypse'' saw three straight examples: Abyss, [[AdaptationalHeroism who is a hero in the classic Marvel Universe]]; Emma Stead, a member of the Hellfire Club's London branch, whose [=AoA=] counterpart was Damask; and Genocide, whose counterpart is Holocaust. In a more literal case, Holocaust himself and Sugar Man, as well as Dark Beast and Comicbook/XMan, the respective counterparts of Beast and Comicbook/{{Cable}} ends up in the classic Marvel Universe as the original [=AoA=] story closed. Since then, the [=AoA=] versions of Sabretooth, Blink, Nightcrawler, and Blob also appeared in Earth-616.
* When the original GuardiansOfTheGalaxy went back in time, Vance Astro talked his younger self out of joining the Air Force and caused the premature emergence of the latter's telekinesis, causing his universe to become an alternate timeline. The mainline Marvel Universe version of Vance Astro is the Comicbook/NewWarriors / [[Comicbook/TheAvengers Avengers]] member known as Justice.
* The UltimateMarvel version of the Beetle originated in the ''VideoGame/UltimateSpiderMan'' video game, before making the jump to [[Comicbook/UltimateSpiderMan the comics]] a few years later.
* Takuya Yamashiro, the [[RaceLift Japanese]] version of Franchise/SpiderMan from the {{Toei}} [[Series/SpiderManJapan live-action show]], will be brought into the official Marvel canon during the ''Comicbook/SpiderVerse'' crossover event.
* Though he is never named as such, a villain clearly based on the Fifth Avenue Phantom from ''WesternAnimation/SpiderMan1967'' once tangled with Comicbook/SpiderGirl.
[[/folder]]

[[folder:Anime]]
* ''[[Anime/ElHazardTheMagnificentWorld El Hazard]]'' featured a goofy and silly version of the "ultimate weapon android" Ifurita, as opposed to the far more serious and angsty Ifurita from the original {{OAV}} continuity. However, her popularity led to her being written into the latter continuity via the Radio Dramas, where her name was changed to "Ifurina."
* Ryo Akiyama from ''Anime/DigimonTamers'' and his Digimon don't seem to follow the [[MagicAIsMagicA same rules]] as the others. This is because he is from the AlternateUniverse where the ''Anime/DigimonAdventure'' series took place. This is [[AllThereInTheManual explained in the series of video games]] of which he is the star. To drive the point home, he is not in the {{manga}} that was later adapted from the series.\\
Unfortunately for western fans, his games were on the UsefulNotes/{{Wonderswan}}, a handheld that was [[NoExportForYou never released outside Asia.]] The first of these games got an English translation for Hong Kong, but the translation sucked. When he did turn up in ''Tamers'', there was naturally massive confusion, as without the games to explain his backstory, he seemed to make absolutely no sense as a character. Interestingly enough, he's a ''different'' kind of Canon Immigrant, his games are canon to the Anime/DigimonAdventure universe, he cameoed in ''Our War Game'', and then twice in Anime/DigimonAdventure02, and is a vital part of Ken's backstory. He moved to the ''Tamers'' universe after [=ZeedMilleniummon's=] final defeat, effectively immigrating from one universe to another.\\
Due to the wildly different animation styles of the movies and ''Tamers,'' Ryo being in ''Tamers'' didn't cause much confusion: your average American Digimon fan had no idea that Ryo was supposed to be that guy in a couple shots of the movie (as a background character and ContinuityNod; if you didn't know who he was beforehand you had absolutely no reason to take note of him.) "Who is that guy we mostly see from behind with Ken in the origin story, and what was that monster-thing" ''was'' a major question, though, and even once fans ''did'' know, the decision to make a video game ''that'' necessary to understand what is going on in the show came to be seen as further evidence of season two's SeasonalRot.
* ''TokyoMewMew'' imported everything ''but'' characters from the anime after it OvertookTheManga. The girls originally didn't use transformation phrases, for one...
* ''Anime/MaiOtome0Sifr'', the anime prequel to ''Anime/{{Mai-Otome}}'', features Mayo and Shion, characters originally from the ''[=Mai-HiME=] Destiny'' LightNovels taking place in an AlternateContinuity to ''Anime/MaiHiME''. A rare example of trans-continuity, trans-''setting'' promotion to canon.
* Mana Kirishima first appeared in the ''Anime/NeonGenesisEvangelion'' video game ''Girlfriend of Steel'', but proved popular enough that she later appeared in the unrelated ''ShinjiIkariRaisingProject'' game and manga.
** The ''Shinji Ikari Raising Project'' game introduced three new NERV technicians named Kaede, Satsuki, and Aoi. The three would later appear in the AlternateUniverse ''[[NeonGenesisEvangelionCampusApocalypse Campus Apocalypse]]'' manga.
*** However, none of them have actually immigrated back into the anime canon, or even the ''Anime/RebuildOfEvangelion'' movies.
* ''Anime/{{Mazinkaiser}}'' was born out of the idea of giving the ''MazingerZ'' a MidSeasonUpgrade for Kouji Kabuto in ''[[VideoGame/SuperRobotWars4 Super Robot Wars F Final]]''. Developer Banpresto asked Creator/GoNagai, Mazinger's creator, to design it; not only were players pleasantly surprised with the upgrade, but the reception of its appearance allowed Nagai to quickly incorporate the Mazinkaiser into Mazinger canon.
* Mei Sakura, a character created for the ''LoveHina'' anime, was not only inducted into the manga at its very end, but Akamatsu then transplanted her into ''MahouSenseiNegima'', causing many fans to wonder if they're one and the same person.
* In ''Manga/DetectiveConan'', Inspector Shiratori was originally movie-only (and holding one rank lower) and Detective Takagi was originally used only in {{filler}}s. A number of minor police inspectors were named after their voice actors.
* In ''Manga/{{ARIA}}'', Ai was originally anime-only character, but starts to appear in special chapter in various guidebooks, culminating in [[spoiler:becoming Akari's apprentice]] in the last manga chapter (and anime episode).
* The VB-6 König Monster first appeared in the Playstation game ''Macross Digital Mision VF-X''. ''MacrossFrontier'' is the first animated Macross series in which it has appeared. Fan theory holds that it got in due to its awesome, gigantic toy.
** Also from ''Macross'', though possibly a coincidence, the idea of controlling Veritech fighters with a brain interface showed up in the American ''RoboTech'' tie-in novels several years before they were introduced to the Japanese canon in ''MacrossPlus''.
* ''Anime/DragonBallZ'' has one in the form of Goku's father Bardock. Reportedly Akira Toriyama liked the Bardock movie special so much he including him in the manga, in a brief two-panel flashback.
** Anime/DragonBallKai, a recut of the anime which sheds off the majority of the filler, actually makes Bardock's death the ''prologue'' to the series.
* In ''SaintSeiya'', the special [[BrainwashedAndCrazy brainwashing technique]] of the Pope, the ''Genrou Maouken'', appeared first in the anime before being introduced by the author in the manga. Similar is the case of the character Lyra Orpheus from the 2nd film, who's later seen (redesigned) into the manga continuity (though [[GodCreatedCanonForeigner Kurumada made the design sketches for the movie enemies]]).
* ''Anime/FutureGPXCyberFormula'': Seiichirou Shiba, Rena Yuuki and Sera Gallagher all first appeared in the [=PlayStation=] game ''The New Challenger'' and they later were put into the extra ending of ''Sin''.
** Also Aya Stanford, who appeared in the ''Sin'' OVA and some episodes in ''Saga'', was a character originally created for the first ''SAGA'' drama [=CD=]s.
* Rai the protagonist of a video game spinoff, or someone that looks very much like him, [[http://images2.wikia.nocookie.net/__cb20091113202938/codegeass/images/e/e3/Ashford_Students_-_Anya_Target.png appeared]] in ''Anime/CodeGeass R2'' for a few moments.
** Similarly, Nonette Ennagram (The Knight of Nine, who's name is derived from two words meaning nine.) appears in R2 when the Knights of the Round are revealed... She never appears again. Some fans have taken this to mean that she's the only Round who hasn't tried to kill Lelouch, and one of the few Rounds to survive the events of the series.
** Marika Soresi and Liliana Vergamon, two characters used to expound on Cornelia's opinions of events in the novels while acting as her wingmen, appear alongside Britannian Ace and Knight Of Round Luciano Bradley in Code Geass R2. They die immediately.
* In the ''{{Guyver}}'' anime film ''Out of Control'', the villainous [[EvilCounterpart Guyver II]] was given a GenderFlip. This female version of Guyver II was incorporated into the manga as another character named Valkyria.
* The Franchise/{{Gundam}} video game series ''SD Gundam G Generation'' features a number of OriginalGeneration mecha in order to spice things up. So far, only one of these has filtered back into the source material: the Gundam Belphagor, from ''[[Anime/AfterWarGundamX Gundam X]]'''s After War time line, which shows up in the sequel manga ''Under The Moonlight''.
** Gundam actually has quite a lot of these. Mechs that only appear in ''MSV'' model kit lines have been showing up in subsequent anime productions since ''[[Anime/MobileSuitZetaGundam Zeta Gundam]]'', ''[[Anime/MobileSuitGundamUnicorn Gundam Unicorn]]'' being a particularly massive example.
** One of the most obscure ones comes in the form of the Perfect Gundam, an armor upgrade for the RX-78-2 Gundam from the original series that debuted in an obscure manga called ''Plamo Kyo Shiro'', where it was a kitbash plastic model created by the title character and scanned in to a VR game to battle against other models (a premise later used for the mostly unrelated ''GunplaBuildersBeginningG''). It has since gone on to appear as an upgrade for the actual Gundam in various video games, notably the ''G-Gen'' series. The Perfect Gundam finally appears in animated form in the season 1 finale of GundamBuildFighters (which also users a similar premise to the aforementioned Plamo Kyo Shiro and Gnpla Builders Beginning G), in that episode it is piloted by Takeshi Iori, the runner up for the second world championships and the father of the protagonist.
** The latest example is the Perfect Strike Gundam from the ''[[Anime/MobileSuitGundamSeed Gundam SEED]]'' remaster. After the Strike Gundam model kits were released, a common project for model collectors was to build a version of the Strike with all three Striker Packs equipped at once. Someone at Bandai must have liked the idea, because the Perfect Strike appears in the latter half of the remastered ''Gundam SEED'', upgraded from the original Strike.
** Probably the oddest one of the bunch are the ''Anime/MobileSuitGundamWingEndlessWaltz'' redesigns of the original five Gundams of ''Anime/MobileSuitGundamWing''. All five made their first appearance as just drawings. Wing would be the first to make a move, becoming a hidden unit in ''VideoGame/SuperRobotWarsAlpha 2'', then an event unit in ''VideoGame/SDGundamCapsuleFighter'' before officially appearing in the remake manga ''Glory of Losers'' with the other four.
* In ''Manga/{{Naruto}}'', a certain pair of lightning-powered swords from a filler arc in the anime ends up showing up in the manga being wielded by a former member of the Seven Swordsman of the Mist, albeit with a slightly different design.
** The guy who actually wielded said swords in the before-mentioned filler arc ends up showing up in the manga himself, during a flashback.
** Gari from the Hidden Stone Village, Chukichi of the Hidden Mist Village, Pakura of the Hidden Sand Village and Toroi of the Hidden Cloud Village were all originally from the sixth Naruto movie. They made their appearance in the manga during the Fourth Ninja War arc.
** The infamous Episode 167 had 6-tailed Naruto perform 2 anime-original moves: a Rapid-Fire Tailed Beast Bomb and a Tailed Beast Laser. [[spoiler: In chapter 610, both Killer Bee and Naruto used the former on the Juubi, while the Juubi used the latter on the two.]]
* Musashi Tomoe from ''GetterRobo'' is an example that it might seem surprising to fans, but in KenIshikawa's original manga, Getter-3 was piloted by Professor Saotome. Musashi was created to fill that spot in the anime adaptation, and Ishikawa liked him so much that he was imported back into the manga and has subsequently become a central and fan-beloved member of the Getter family.
* ''Dororon Enpi-chan'' is a [[{{Ecchi}} boderline erotic]] [[{{Yonkoma}} 4koma]] parody of Creator/GoNagai's ''Manga/DororonEnmaKun'' with with main character being Enma's DistaffCounterpart. In recent remake, ''Dororon Enma-kun Meramera'' Enpi is introduced as the main villain and [[spoiler:Enma's sister]].
* Minamo from ''{{Sketchbook}}'' first appeared in the anime incarnation, in which she is Daichi's little sister. She even has a rather big role, interacting a lot with the main character Sora, starting with the very first scene of the series--and she also participates in the art club's events later on. Perhaps the makers wanted to have a younger character to appeal to a larger demographic. She was re-introduced into the manga in chapter 97, about two years after the anime ended. Her first scenes in the manga imply that she has had prior interactions with the main cast, but the author stated in the notes that her Immigration into the manga continuity has no real meaning for the timing.
* The comics for ''Manga/WeddingPeach'' featured an upgrade for all the girls to Super Love Angels as an excuse to match their outfits with the ones seen in the anime. The anime had no such upgrade.
* ''{{Trigun}}'': The boomerang-wielding Descartes actually appeared in the first episode of the anime before showing up in the manga ''Trigun Maximum.'' Several other one-shot characters from the anime have make brief cameos when Vash flashes back to various people he's met in his journeys. Yasuhiro Nightow has actually stated that Vash's encounters with these characters in the anime episodes is canon within the manga's backstory [[spoiler: [[BroadStrokes though that would mean that they'd be ''slightly'' different than the anime versions since Meryl and Milly wouldn't exist in them as they didn't officially meet Vash until the third chapter of the manga]]]].
* There were rumors that OriginalCharacter Ayumi Sakigame of ''Anime/PrettyCureAllStars New Stage'' would make the jump to ''Anime/SmilePrettyCure'' as a SixthRanger, but nothing of the sort happened. On the other hand, the items known as Miracle Lights, which made their first appearance in the ''Anime/YesPrettyCure5'' movie, would bounce over to the ''All Stars'' movies, becoming an important part of how the movies play.
* Several Anime/YuGiOh cards that were previously only in the anime, like Guardian Eatos, were made into real cards years later…albeit as knock-offs in some cases, including that of Eatos.
[[/folder]]

[[folder:Audio Play]]
* The ''AudioPlay/BigFinishDoctorWho'' audio plays have their own Canon Immigrants brought in from the comic strips, mostly from ''Magazine/DoctorWhoMagazine'': short episodes feature cuddly alien conqueror Beep the Meep and Time Lord construct Shayde, and there is a short and a full-length episode in which the Doctor's companion is shapeshifting penguin Frobisher.
** ''The Company Of Friends'' is an Eighth Doctor play that features a 45-minute story for two people that were never in the Big Finish audios before -- Fitz ([[Literature/EighthDoctorAdventures books]]) and Izzy ([[Magazine/DoctorWhoMagazine comics]]).
*** For the longest time, Big Finish's works were of debatable canon, never officially being acknowledged by the show itself, but never being denied either. In a prequel to the 50th anniversary special called "The Night of The Doctor", [[spoiler:the Eighth Doctor acknowledges and name-drops all of his audio-only companions, officially rendering Big Finish's stories and characters canon.]]
[[/folder]]


[[folder:Comic Books]]
* Cudley The Cowlick, the flying cow head/spaceship from the {{Archie|Comics}}-published ''ComicBook/TeenageMutantNinjaTurtlesAdventures'' comic book, eventually made its way into the [[ComicBook/TeenageMutantNinjaTurtlesMirage original comic book]] continuity, appearing in a couple of stories. In a bit of a departure from the trope, it was hinted that the Cudley that showed up in the Mirage comics was the same one from the Archie comics, instead of being a different incarnation of the same character.
* [[WesternAnimation/ExtremeGhostbusters Extreme Ghostbuster]] Kylie Griffin made her way into IDW's Film/{{Ghostbusters}} comics.
* Toyline ponies Sweetcream Scoops and Sugar Grape cameo as background ponies in ''ComicBook/MyLittlePonyFriendshipIsMagicIDW''.
* Jessica Priest from the ''Film/{{Spawn}}'' movie was imported into [[Comicbook/{{Spawn}} the comics]] and {{Retcon}}ned into being the person who killed Al Simmons in the first place. She had appeared as his killer in the film (since rights issues made it impossible to use [[{{Youngblood}} Chapel]], the man who killed Al into the comics), and was brought into the comic continuity once similar legal issues with RobLiefeld led to Chapel being ExiledFromContinuity.
* The IDW continuity for {{Franchise/Transformers}} is G1 based but numerous other characters are integrated from all over the franchise. Deluge and Dreadwing from Main/TransformersGeneration2, Waspinator and Rattrap from WesternAnimation/TransformersBeastWars, Tankor from WesternAnimation/TransformersBeastMachines, Sky-byte from Anime/TransformersRobotsInDisguise, Lugnut and an {{Expy}} of Blitzwing (Blitzving) from WesternAnimation/TransformersAnimated,[[note]]G1 Blitzwing is already in the comics in a role that makes it impossible for the Animated Blitzwing lookalike who hangs out with Lugnut to be him. His FanNickname is "Blitzving" to go with Animated Blitzwing's German accent.[[/note]] as well as the Vehicons and at least one Insecticon from WesternAnimation/TransformersPrime, and finally Lockdown, whose design is an immigrant from the movies who was an immigrant from WesternAnimation/TransformersAnimated.
[[/folder]]

[[folder:Fan Works]]
* [[http://www.fimfiction.net/story/73406/rainbow-in-the-dark Mechanic Wrench]] of the fic, ''FanFic/RainbowInTheDark'', actually has her origins in an earlier piece by the author.
* ''The Awakening of a Magus'' (an early Literature/HarryPotter fic the author stopped writing and removed it from Website/FanFictionDotNet due to personal problems, although a copy still exists on fictionalley.org), had a RecursiveFic called ''Who Wants to Live Forever'' describing the death of a background character from over 3000 years ago (likewise removed due to being a songfic). Details of that description later made it into the ''Awakening''.
* The original ''Fanfic/{{Pokeumans}}'' series was sufficiently successful and had enough scope to prompt a community of fan series of its own. Ideas from these such as the evil {{mooks}} being called 'Extinctionists' and The Board of Dream Messengers were then accepted across the whole group and in the original series.
* ''Fanfic/ReimaginedEnterprise'' takes a number of plot details from the non-canon ''Franchise/StarTrekExpandedUniverse'' and uses them.
** "Literature/{{Rihannsu}}" is the real name of the Romulans and "Romulans" is a [[ReportingNames human code name]] for them.
** A version of the Optimum Movement from ''Literature/StarTrekFederation'' appears as antagonists during the Post-Atomic Horror in the flashback in "Remembrance".
* In ''FanFic/MegaManDefenderOfTheHumanRace'', a story based around the Mega Man cartoon and Classic game series, the leader of the Mega Crew is revealed to be Tiesel Bonne, from the ''VideoGame/MegaManLegends'' games. Later, his siblings appear, and the Bonnes become supporting characters.
* In ''FanFic/MegaManReawakened'', BigNameFan Lizsama's OriginalCharacter, Elizabeth Marmalade, appears in Arc 3 with her permission.
** The Neo Emerald Spears, who are based off the Emerald Spears from Archie Comics' ''ComicBook/MegaMan'', appear in Arc 4.
** Prism Man, who's exclusive to the ''Anime/MegaManNTWarrior'' anime, appears in Arc 4.
[[/folder]]

[[folder:Film]]
* The Moorish character in ''RobinHood'', who in the last decade or so has cropped up in Film and TV, at least. His earliest incarnation seems to be have been Nazir in ''RobinOfSherwood''.
* The 1998 American ''Film/{{Godzilla|1998}}'' officially became part of the Japanese ''Franchise/Godzilla'' franchise with the release of the film ''Film/GodzillaFinalWars'' and was even given the official name of "Zilla". Poking fun at the American rendition, unlike all the other monsters, which are depicted as men in latex costumes, Zilla is rendered in intentionally mediocre CGI.
** He was referenced in an earlier film in which a character asks "Didn't Godzilla show up in New York recently?" and is told "That's what the ''Americans'' think."
** And it doesn't stop there. Mothra, {{Rodan}}, Varan, Baragon, Kamoebas (a giant turtle from the obscure film ''Space Amoeba''), Moguera (from another obscure film called ''The Mysterians''), Meganulon, Manda (from yet another obscure film called ''Atragon'') and Film/KingKong were all stars in their own respective films before becoming part of the Godzilla franchise.
** ''Film/FrankensteinConquersTheWorld ''
*** It's known as ''Frankenstein vs. Baragon'' in Japan. It takes Frankenstein's Monster (who, not surprisingly, is [[IAmNotShazam mistakenly called "Frankenstein"]]) growing to giant size and fighting Baragon.
* Coruscant, the capital of the Old Republic and later the Galactic Empire in the ''Franchise/StarWars'' Universe, first appeared and was named in ''TheThrawnTrilogy'' by Timothy Zahn. It was finally made G-{{canon}} when ''Film/ThePhantomMenace'' was released.
** The ''Radio/StarWarsRadioDramas'' (1981) marked the first physical appearance of Bail Organa, Leia's adoptive father. He appeared in the prequel trilogy as the Republic senator from Alderaan, played by Creator/JimmySmits.
** Quinlan Vos, a Jedi based on a character from the background in a shot from Tatooine, was given a story in the comics and novels. George Lucas loved the character so much that he intended to give him a scene in ''Film/RevengeOfTheSith'', but due to time constraints, the scene was cut. He is, however, mentioned by name when Obi-Wan speaks to Anakin about the Outer Rim sieges.
** Ditto with Aurra Sing, another cameo in Episode I that was given a backstory in the EU and elevated to G/T Canon in StarWarsTheCloneWars
** [[spoiler: DarthBane]] has been elevated from C-Canon to G/T-Canon with the final arc of StarWarsTheCloneWars
[[/folder]]

[[folder:Gamebooks]]
* King Toadstool and Wooster, ''Franchise/SuperMarioBros''-related characters introduced in ComicBook/NintendoComicsSystem, made a few appearances in the ''Literature/NintendoAdventureBooks''.
* The ''Literature/LoneWolf'' gamebook series had a short-running companion novel series called ''Legends of Lone Wolf'', which covered and expanded upon the gamebook stories, including introducing several new characters. Demigoddess Alyss was introduced early into that series, and broke through the canon ceiling in Book 16 of the gamebook series.
[[/folder]]

[[folder:Literature]]
* OlderThanRadio: None of the three most famous stories associated with the ''Literature/ArabianNights''--"Literature/{{Aladdin}}","Literature/AliBabaAndTheFortyThieves", and "Literature/SinbadTheSailor"--were part of the collection as it was assembled in the Arab world over several centuries. All three were independent folk stories added to the ''Nights'' by Antoine Galland when he compiled his 18th century French translation, which introduced the ''Nights'' to European culture.
* William Gillette's ''Theatre/SherlockHolmes'' play introduced the character of Billy the page-boy. When Creator/ArthurConanDoyle later wrote a couple of Holmes plays himself (''The Crown Diamond'' and an adaptation of ''The Speckled Band'') he included this character, possibly for the sake of consistency with Gillette. Conan Doyle later adapted ''The Crown Diamond'' into a short story (''The Mazarin Stone''), and thus Billy entered into the Literature/SherlockHolmes canon. He also received a very brief mention in a couple of the later canonical tales.
* Happened with RaymondEFeist's ''TheRiftwarCycle''. The characters of Gorath, Owyn, Jazhara and Jimmy's twin brother Lysle Rigger all make their first appearances in the computer games ''VideoGame/BetrayalAtKrondor'' and ''ReturnToKrondor'', set in Feist's world. They were then incorporated into canon when Feist wrote a novelization for both games and made references to them in later books.
* Margo Lane appeared first on ''Radio/TheShadow'' radio show before Walter Gibson incorporated her into the prose series. Earlier novels of the Shadow often only barely featured women, but the radio show wanted vocal contrast.
* ''InspectorMorse'' had a Canon Immigrant ''car''. The original novels by Colin Dexter had Morse driving a nondescript modern vehicle, but the TV show gave him a CoolCar, a red 1960s Jaguar Mark II. The car became so iconic of the character that the novels written after the TV show started included it with no explanation of the change, even to the point of putting it on covers (art images, not photos from the show).
* ''ElleryQueen''s secretary Nicky Porter was originally created for the radio show, but later appeared in two of the novels and a dozen short stories.
* Hastur, a great old one in the Franchise/CthulhuMythos is actually a canon immigrant from ''Literature/TheKingInYellow'' (well [[MindScrew sort of]]) with a name taken from an Creator/AmbroseBierce story by way of Creator/AugustDerleth.
* A minor example; The Wizla Tobacco and Rolling Paper Company was first mentioned on the label of Albert's tobacco tin in the TV adaptation of ''Discworld/{{Hogfather}}'', before getting referenced several times in ''Discworld/UnseenAcademicals''.
** As revealed in the official ''Discworld/{{Mort}}'' playscript, rather than try and duplicate the established appearance of Rincewind for the sake of a brief cameo, the Studio Theatre Club replaced him with their own nervous junior wizard character. They called him [[Discworld/MovingPictures Stibbons]].
** In ''The Compleat Ankh-Morpork City Guide'' the list of cafes includes Cafe Ankh, and the pubs and taverns includes the Octarine Parrot, both from ''DiscworldNoir''.
* Doris and Benny the Cab, created for the film ''Film/WhoFramedRogerRabbit'', appeared in the sequel to [[WhoCensoredRogerRabbit the original book]]. Another character created for the film, Teddy Valiant, is mentioned in the book, though he doesn't appear in either version because he was killed years ago.
** ''Who P-P-P-Plugged Roger Rabbit?'' is really more of a sequel to the film than the book in most respects, including Toons being animated characters rather than comic strip characters, [[spoiler: Roger being a good guy]] and being set in TheForties rather than TheEighties.
* Two famous British literary heroes had their backgrounds tweaked to reflect those of their actors in live action adaptations:
** At first, Creator/IanFleming didn't like the casting of Creator/SeanConnery as Film/JamesBond. However, after seeing ''Film/DrNo'', he made Bond's father, like Connery, a Scot.
** Creator/BernardCornwell established his hero, Richard Literature/{{Sharpe}}, as born and raised in London. After Sean Bean portrayed the character for television, Cornwell added a previously unrevealed aspect of Sharpe's childhood. At age 15, Sharpe moved to Yorkshire, where he presumably gained an OopNorth accent similar to the obviously-not-from-London Bean's.
** Also the character of Rifleman Harris was created for the TV series and subsequently appeared in the novels because Cornwell liked him.
[[/folder]]

[[folder:Live Action TV]]
* The first name of Uhura, of ''Series/StarTrekTheOriginalSeries''. The name "Nyota" (Swahili for "star") was invented by William Rotsler for his 1982 book ''Star Trek II Biographies''. It was approved by the original actress, Nichelle Nichols, and by series creator GeneRoddenberry. After wide use in the StarTrekExpandedUniverse and AllThereInTheManual works it finally became canon in the 2009 film, ''Film/StarTrek''. As did the names of Captain Kirk's parents, George and Winona, coined by novelist Vonda N. [=McIntyre=] in ''Enterprise: The First Adventure''. [=McIntyre=] also gave Mr. Sulu the first name Hikaru in her novel ''The Entropy Effect'', and the name was canonized in ''Film/StarTrekVITheUndiscoveredCountry''.
* The Holodeck of the ''Series/StarTrekTheNextGeneration'' series, which started its life in ''WesternAnimation/StarTrekTheAnimatedSeries''. Kirk's middle name was first declared as "Tiberius" in the animated series as well (though it was conceived earlier, and Gene Roddenberry had previously used "Tiberius" as the middle name of the title character, William T. Rice, in his first TV series ''The Lieutenant'').
** Although that does conflict with the tombstone that Gary Mitchell conjures up in the second pilot, which reads James ''R.'' Kirk...
** Add to that Lady Amanda's surname of Grayson, taken from "Yesteryear," the best known episode of ST:TAS.
** Minor example: the most prominent new species of the animated series, the Caitians (M'ress) and Edoans/Edosians (Arex), are also canon immigrants: Caitian admirals appear in The Voyage Home and Edosians have been mentioned several times (for instance, Garak dealt with Edosian orchids while a gardener).
** If plot points from originally non-canon works count, then the big, ''big'' one would be the entire episode "Yesteryear". Though the animated series was largely considered non-canon, this one episode gave us a lot about Vulcan culture and Spock's past that has been adhered to - its events were referenced in TNG's "Unification," Vulcan's Forge and sehlats were featured in the Vulcan trilogy on ''Series/StarTrekEnterprise'', and the [[Film/StarTrek reboot movie's]] sequence with young Spock is taken nearly word-for-word from the episode.
*** While only referred to as a "teddy bear", the sehlat was actually first described in the episode Journey To Babel, so it may not qualify.
** Synthehol, an alcohol substitute that gets one drunk, but the effects of intoxication can be dismissed at will, started life as a concept in the TNG novels and was soon written into the TV series.
** "The Warrior's Anthem", a Klingon war hymn sung in Series/DS9: [[Recap/StarTrekDeepSpaceNineS05E21SoldiersOfTheEmpire "Soldiers of the Empire"]], originally appeared in the video game ''VideoGame/StarTrekKlingon''.
* ''Series/DoctorWho'' has occasionally dipped in its [[Franchise/DoctorWhoExpandedUniverse Expanded Universe]], largely because of the [[PromotedFanboy former fanboys]] currently in charge.
** The television episodes [[Recap/DoctorWhoS29E8HumanNature "Human Nature"]]/[[Recap/DoctorWhoS29E9TheFamilyOfBlood "The Family of Blood"]] had their basis in the ''Literature/DoctorWhoNewAdventures'' novel ''Human Nature'' by Creator/PaulCornell, who also wrote the adaptation.
** As far as actual characters go, the Dalek Emperor first appeared in Dalek comics and annuals, though he looked considerably different in his first TV appearance in [[Recap/DoctorWhoS4E9TheEvilOfTheDaleks "The Evil of the Daleks"]]. When he re-appeared in [[Recap/DoctorWhoS25E1RemembranceOfTheDaleks "Remembrance of the Daleks"]] he looked more similar to the comics version, as a ShoutOut.
** The idea of top-ranking Daleks being gold-painted began in the Peter Cushing films, but made its way into the first couple of colour TV Dalek stories. Speaking of the Cushing films, the new Daleks props introduced in [[Recap/DoctorWhoS31E3VictoryOfTheDaleks "Victory of the Daleks"]] [[MythologyGag take their technicolor design from those of the movies and a couple of design elements (most notably the balljoints for the eyestalks.) from the same comics the Dalek Emperor first appeared]]. The smallest Dalek time unit, the "rel", also began in films and comics but has been incorporated into TV canon in post-2005 Dalek stories.
** The look of the Daleks' flying saucers, which first appeared on the DVD release of [[Recap/DoctorWhoS2E2TheDalekInvasionOfEarth "The Dalek Invasion of Earth"]] as replacement special effects, and later appeared in the series itself, was originally from the comic strips.
** A glass Dalek was first mentioned in David Whitaker [[Literature/DoctorWhoNovelisations novelisation]] of the original Dalek story: ''Doctor Who in an Exciting Adventure with the Daleks''. A glass Dalek eventually made it into TV canon in [[Recap/DoctorWhoS22E6RevelationOfTheDaleks "Revelation of the Daleks"]].
** The episode [[Recap/DoctorWhoS33E4ThePowerOfThree "The Power of Three"]] brought Kate [[spoiler:Stewart, the daughter of the Brig]], into the series.
** While not appearing in the episode, the Chelonians, an alien species first introduced in the Literature/DoctorWhoNewAdventures novels during the show's nineties hiatus, are name-checked as part of the LegionOfDoom of [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]].
** [[Recap/DoctorWho50thPrequelTheNightOfTheDoctor "The Night of the Doctor"]] makes canon several [[spoiler:Eighth Doctor companions from the Big Finish productions: Charley, C'rizz, Lucie, Tamsin, and Molly]].
** In [[Recap/DoctorWho50thASTheDayOfTheDoctor "The Day of the Doctor"]], the Eleventh Doctor meets a character called the Curator, [[spoiler:strongly implied to be a far-future regeneration of the Doctor, played by an elderly Tom Baker (who played the Fourth Doctor in the 1970s)]]. The character originates from the odd pseudo-FramingDevice used in the official reconstructions of DevelopmentHell serial "Shada", which were narrated by [[spoiler:an old Tom Baker]], dressed in a suit and describing the missing scenes while showing the viewer around an art gallery. He also referred to the Doctor in the third person, but prominently used [[spoiler:the Fourth Doctor's]] mannerisms and {{Character Tic}}s, and performed the unfilmed ScriptWank scene where [[spoiler:the Doctor announced that maybe someday he'd retire and everyone would think that he was [[ArcWord just a nice old man]] with the Fourth Doctor's]] signature CheshireCatGrin.
** ''Recap/DoctorWhoTheCurseOfFatalDeath'', a ''Series/DoctorWho'' spoof by Steven Moffat, has a load of silly jokes about an alien race that communicated by carefully controlled breaking of wind. This same race is mentioned later in the actual canon, and they do communicate that way.
* In a comic about the character Spike from ''Series/{{Angel}}'', Spike is sent to an asylum for demons and meets an incredibly strange character... a human-sized, floating, telepathic Betta fish named Betta George. Apparently, when JossWhedon approached the writer of these comics to collaborate on the canon continuation comic ''After The Fall'', he noted "I like George. Let's find a place for him." The fans are reportedly somewhat squeamish about the inclusion of such a blatantly strange character in canon, despite the show's other eccentricities.
** Illyria also appeared in another comic's canon and will appear in ''ComicBook/{{Buffy|the Vampire Slayer}}'' season 9.
** Beck, who also appeared in the ''Asylum'' mini-series and other Spike comics appears in ''After The Fall''.
* Howard, Marina, and Pearl from ''LastOfTheSummerWine''. They started out in a stage play version of the show, and got a good enough reaction to become part of the TV cast.
* The ''Series/{{CSI}}'' villain Sqweegel. Anthony Zuiker's digital novel "Level 26 Dark Origins" has first White Sqweegel and at the end comes Black Sqweegel, the one who crossed to CSI. WordOfGod has confirmed the immigration on Level 26 website.
* In ''Franchise/PowerRangers'', this is subverted with Zordon's home planet of Eltar. While Eltar Is first mentioned in the [[NonSerialMovie non-serial]] [[Film/MightyMorphinPowerRangersTheMovie first movie]], and not mentioned in the main canon until ''Series/PowerRangersTurbo'', the name has been in the UniverseBible since the beginning.
** Likewise the Tengu (renamed Tengas) and the Rangers' ninja costumes and powers originated in the movie and were used in ''Series/MightyMorphinPowerRangers'' Season 3, since the events of the movie were modified and retold in the series. The Zords don't quite count as they were based on the mecha from ''Series/NinjaSentaiKakuranger'' and most likely would have appeared in the series anyways even if the movie was not made.
** The Battlizer from ''Series/PowerRangersSPD'' crossed over to its source material, ''Series/TokusouSentaiDekaranger'', ''the same year''[[note]]due to the then-year-long gap between ''Franchise/SuperSentai'' and ''Franchise/PowerRangers''[[/note]] when they returned for its team-up movie with ''Magiranger''.
** While the term wasn't used for Gokai Silver's Gold mode from Series/KaizoukuSentai Gokaiger and Kyoryu Red's Carnival mode from Series/ZyudenSentaiKyoryuger, both modes do share traits from Power Rangers Battlizers, most notably, enhanced power armor, and a finisher.
* The "Clue Crew" in ''{{Jeopardy}}'' originated on the short-lived kids' version ''Jep!'', there called the "Jep! Squad".
[[/folder]]

[[folder:Music]]
* Music/TheBeatles had a problem with the soundtrack to their television film ''Magical Mystery Tour'', as the film had only six songs. In Britain the soundtrack "album" was released as two singles with three songs apiece. In America, Capitol Records added the Beatles' 1967 singles (including "Penny Lane", "Strawberry Fields Forever", and "All You Need Is Love") to the soundtrack to make a full length album. The revised American version has now become the standard version all around the world; the original British edition of ''Magical Mystery Tour'' wasn't released again until the 2012 DVD and Blu-ray special edition rerelease of the movie. Purists don't like the US album because it apparently messes with the band's concept - but the band actually preferred the US album and reissued it as such from the 70s onwards.
* Music/Megadeth 's soundtrack contribution compilation Hidden Treasures was originally designed as a limited edition bonus disc for Youthanasia, but became very popular, largely thanks to the hit single "Angry Again" being included. It was released as a separate release in its own right, and a remastered version was reissued in the UK many years later (the US label kept most of the tracks for the box set Warchest, although some appear in different versions).
* Music/Oasis had the B-Side compilation "The Masterplan" which was designed for US and Japanese fans to avoid them paying a lot of money for singles. It ended up being released in the UK thanks to demand, and has since become one of their most popular releases.

[[/folder]]

[[folder:Mythology]]
* Although many sources now list among the Norse pantheon a goddess of love named "Astrild", she is in fact the creation of a Romantic-era English poet; the original Norse goddess of love was Freyja.
* The hippogriff made its first documented appearance in the 16th century poem ''OrlandoFurioso'', and it's unlikely that even people who'd sincerely believed in griffins ever gave credence to these horse/griffin hybrids. That hasn't stopped modern fantasy writers from including them in the roster of commonly-appearing mythical beasts.
* Rudolph The Red-Nosed Reindeer, created for a department store giveaway childrens' book which was later [[AdaptationDisplacement adapted into a song]] and a [[RudolphTheRedNosedReindeer TV special]]. The character became so popular that he's been added to the eight reindeer from "A Visit From St. Nicholas"/"'Twas The Night Before Christmas" and has become TheFaceOfTheBand in the public consciousness.
[[/folder]]

[[folder:Newspaper Comics]]
* Similar to Clark and Lois' marriage, Jon and Liz of the comic strip ''{{Garfield}}'' are now the strip's OfficialCouple after nearly 30 years of non-interest and pity dates on her part. This is mainly because the live action movies had paired the two off in the first and married them in the second.
** Also, Binky the Clown who debuted in the ''[[WesternAnimation/GarfieldSpecials Garfield Halloween Special]]'' before appearing in the strip a year later.
** Floyd the mouse is an odd case. He debuted as a minor character on ''WesternAnimation/GarfieldAndFriends'', and appeared in the strip several years after that show ended, but he only ever appeared in ''one strip'' ([[http://images.ucomics.com/comics/ga/1998/ga980127.gif January 27, 1998]]).
** Hubert and Reba, Jon's old neighbors. They first appeared in the special ''Here Comes Garfield'', aired October 25, 1982, then started to appear in the strip [[http://garfield.nfshost.com/1982/11/07/ 13 days after that]].
* The animated ''{{Peanuts}}'' special, ''Snoopy's Reunion'', aired in 1991, featured three of Snoopy's siblings who hadn't appeared in the strip, Andy, Molly, and Rover. While Molly and Rover never appeared in the strip, Andy first appeared in the strip in 1994.
* Cueball, the villain from the 1946 film ''Dick Tracy vs. Cueball'', would much later (2011) appear in the ''ComicStrip/DickTracy'' comic strip.
[[/folder]]

[[folder:Professional Wrestling]]
* The main character of the '70s manga and anime ''Tiger Mask'', a masked pro wrestler by the same name, was brought into New Japan Pro Wrestling in the '80s. He's since become something of a LegacyCharacter -- at least four different wrestlers have donned the mask -- as has his EvilCounterpart, Black Tiger.
* Suicide, a character who first appeared in ''TNA Impact!: The Video Game'', and later showed up in the ring to exact unspecified revenge on the Motor City Machine Guns. Due to wrestling's [[NoFourthWall self-aware]] nature, this led the Guns to complain to anybody who'd listen about having been beaten up by a video game character.
* Tommy Lister, a.k.a. "Zeus", became a pro [[Wrestling/{{WWE}} WWF]] wrestler after doing ''No Holds Barred'' with Wrestling/HulkHogan. That venture fared mediocrely, but that didn't stop Wrestling/{{WCW}} from bringing him back briefly to fight Hogan as "Z-Gangsta".
** WCW tried it too, when they made David Arquette the WCW Champion after ''Ready to Rumble''. This isn't ''quite'' an example, as Arquette's WCW run was explicitly as himself and not his character from the movie, but it's close enough to merit a mention. The bizarre triple-cage match that serves as the movie's climax also made a WCW appearance as part of this storyline.
[[/folder]]

[[folder:Tabletop Games]]
* In ''{{Battletech}}'', Adam Steiner was created for the spin-off cartoon; however, he has since been "adopted" into the canon of the main line, becoming one of the heroes of the Lyran Alliance due to his military exploits and eventually [[spoiler: becoming known as one of the greatest Archons in the history of the Lyran state]]. Other characters from the Cartoon have appeared, but none as prominently.
** Ian Dresari, the protagonist of ''VideoGame/MechWarrior 4'', is canonized in the history of the tabletop game. [[spoiler: WordOfGod is that reports of Ian Dresari's tyranny in the sequel are actually unfounded propaganda by House Steiner to demonize him and turn public opinion from him. Dresari was defeated but ultimately survived the events of ''Black Knight'' come the time of the Civil War.]]
** The [[http://www.sarna.net/wiki/Deimos Deimos]] battlemech originally appeared as an unofficial mech in the ''Mechwarrior 4: Mercenaries'' [[GameMod MekPak mod]]. It was later made canon and appeared in the official ''[=BattleTech=]'' technical readouts. The [[ChargedAttack Bombast Laser]] appeared in ''Mechwarrior 4: Vengeance'' and was made a canonical weapon eight years later in the "Tactical Operations" advanced rulebook.
* The Blood Ravens chapter of SpaceMarines in ''TabletopGame/{{Warhammer 40000}}'' were initially invented for the DawnOfWar series of video games, but eventually got accepted into 40K canon due to the popularity of the series, and have since appeared in several Black Library novels, including the novelisation of the games themselves.
** Plus being used as an example of how to use Chapter Traits in the old 4th edition Codex (albeit with traits that were not at all representative of the Blood Ravens as seen in-game ''despite more fitting ones being available'', making for a weirdly inverted case of CanonDefilement).
*** The Blood Ravens have also become a one-spin-off-to-another example with the release of the ''Honour The Chapter'' sourcebook for TabletopGame/{{Deathwatch}}. Prior to this there was just one piece of art in ''Rites of Battle'' and a quote from Captain Davian Thule in the core book.
* Elegant Nova of Progression first showed up in ''KeychainOfCreation'' as an Alchemical MadScientist dedicated to making mortals into Alchemical {{Exalted}} piece-by-piece. Now, crack open ''Manual of Exalted Power: Alchemicals'' and flip through to "Notable Individuals"...
* The [[LizardFolk Viashino]] of ''MagicTheGathering'' were originally introduced in the TieInNovel ''The Prodigal Sorcerer'' by Mark Sumner. The designers of the game liked them so much that they worked them into the game, and they still turn up from time to time.
* [[MeaningfulName Gomorra, California]], home of the tie-in CollectibleCardGame, would eventually become an Immigrant ''Setting'' for ''TabletopGame/{{Deadlands}}''. Part and parcel to this were many, many {{Canon Immigrant}}s, including most of the entire [[BigScrewedUpFamily Whateley Family]], Sioux Union, and [[{{Pirate}} piratical]] Maze Rats.
* Many concepts devised for specialized settings in ''TabletopGame/DungeonsAndDragons'' have subsequently become incorporated into the core rule system, as when domains and darklords from the 2nd edition ''TabletopGame/{{Ravenloft}}'' setting became a standard feature of the 4th edition Shadowfell.
** The writers of the ''TabletopGame/ForgottenRealms'' supplements have made canon a wide variety of plot points from the video games. The whole Bhaalspawn plot from the ''VideoGame/BaldursGate'' series is referenced in the 3.5E {{splat}} ''Lost Empires of Faerűn''. Zehir, the BiggerBad of ''VideoGame/NeverwinterNights2: Storm of Zehir'' and the yuan-ti god of poison, was homebrewed for that ExpansionPack, then became one of the primary pantheon of 4th edition and its ''TabletopGame/PointsOfLight'' setting, and then was relisted as a subservient deity of Bane in the 4E ''Forgotten Realms Campaign Guide''.
* Psurlons were a new monster created for the ''DarkSun: Shattered Lands'' computer game. They turned out to be popular and interesting enough to be introduced to the tabletop setting as well.
[[/folder]]

[[folder:Theatre]]
* After [[VideoGame/JeffWaynesWarOfTheWorlds a PC game]] was made out of ''Music/JeffWaynesMusicalVersionOfTheWarOfTheWorlds'', he utilised several features from it for the live stage version (most notably a large part of the Martian intro movie, and the game's model for the Martian flying machine which can be seen briefly during ''The Red Weed'')
[[/folder]]

[[folder:Toys]]
* The Starlight Girls (the foster girls Jerrica takes care of) were created specifically for the ''WesternAnimation/{{Jem}}'' TV series. However, at least three of them: Ashley, Ba Nee, and Krissie, were later made into dolls.
* Many of the [[EnsembleDarkhorse more notable]] minor characters in ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' began gaining more and more recognition and nods from the writers, to the point where several of them were finally firmly cemented into canon in the form of toys.
** By now, the overwhelming majority of background ponies have toys; previous generations have had toylines that were much bigger than the shows' casts, but Hasbro realized how much fans have latched onto the background characters and have figured that if they make the 'extra' toys look like the crowd filler ponies instead of just slapping random color schemes on them, you'll have a character who means ''something'' to ''someone.'' The {{Fan Nickname}}s are even used when not problematic due to copyright.
* TheBaroness actually debuted in Marvel Comics' ''G.I. Joe'' in issue #1, created by Larry Hama when he realized there were very few women in G.I. Joe at the time. She was the first character in the cannon to cross media, being imported into the TV show and given her own figure thereafter.
* MonsterHigh's C.A. Cupid is this for EverAfterHigh, where she currently resides.
[[/folder]]

[[folder:Video Games]]
* Karin Kanzuki, Sakura Kasugano's {{rich bitch}} [[TheOjou Ojou]] [[TheRival rival]] from ''[[VideoGame/StreetFighterAlpha Street Fighter Alpha 3]]'', was originally created for a Sakura-centric tie-in manga, ''Sakura Ganbaru!'' by Masahiko Nakahira.
** Gouken, Ryu and Ken's sensei, was originally a character in a ''VideoGame/StreetFighterII'' tie-in manga by Masaomi Kanzaki. The character was later adapted in the video games' canon in the original ''VideoGame/StreetFighterAlpha'' before making a full-fledge appearance as a fighter in ''VideoGame/StreetFighterIV''.
*** That's Gouken and [[IAmNotShazam not Sheng Long]] (although Gouken has all of Sheng Long's supposed moves).
**** "You must defeat me to stand a chance!"
** There's also Evil Ryu (from Masahiko Nakahira's ''Street Fighter Alpha'' manga) and Shadaloo Cammy (who first appeared in the inter-company crossover game ''[[VideoGame/XMenVsStreetFighter X-Men vs. Street Fighter]]''). Aspects of Cammy's backstory from the ''Alpha'' series, such as her codename Killer Bee, were also based on elements that originally appeared in Masaomi Kanzaki's ''Cammy Gaiden'' manga.
** Maki is a triple canon immigrant, being one of the many new characters introduced in ''[[VideoGame/FinalFight Final Fight 2]]'' (where she was a DistaffCounterpart / SuspiciouslySimilarSubstitute of Guy from the previous game), only to be immediately forgotten. And then Masahiko Nakahira brought her back to the limelight in ''Sakura Ganbaru!'', causing Creator/{{Capcom}} to suddenly remember her and putting her in ''[[VideoGame/CapcomVsSNK2MarkOfTheMillennium Capcom vs. SNK 2]]'' before she was eventually featured in the portable versions of ''Street Fighter Alpha 3'' along with Eagle and Yun.
** Mecha Zangief first appeared in the ''[[Franchise/MarvelVsCapcom Marvel vs. Capcom]]'' games as a secret character. In ''[[VideoGame/StreetFighterIV Super Street Fighter IV]]'', he returns as an alternate skin for Zangief.
** Ingrid started out as a [[OriginalGeneration character]] for the cancelled Capcom inter-series crossover game ''Capcom Fighting All-Stars''. She'd, however, make the jump into its "spiritual successor" ''VideoGame/CapcomFightingEvolution'', and later ported into the PSP version of ''Street Fighter Alpha 3''. It was later confirmed that Ingrid is indeed part of the ''Franchise/StreetFighter'' series.
** The idea that Decapre have her face burned on the left side comes from the UDON comics series.
* Several monsters from ''VideoGame/SuperMarioBros2'', which was just a DolledUpInstallment based on the game ''VideoGame/DokiDokiPanic'', have gone on to be included in later ''[[SuperMario Mario]]'' games. These include Shy Guys, Bob-Ombs, and Birdo, as well as a race of mice creatures similar to the boss Mouser.
** Peach's hovering ability also comes from this game.
** The Koopa Bros. of ''VideoGame/PaperMario'' fame originally appeared in the Japan-exclusive manga ''Super Mario-Kun''.
** Toad's voice in the later games sounds suspiciously like his voice from the ''SuperMarioBrosSuperShow''.
** Luigi was portrayed as timid, easily frightened and generally more of a dork in comparison to Mario in the ''SuperMarioBrosSuperShow'' (and even earlier than that in [[http://www.youtube.com/watch?v=AnU-2HRJNO4 the commercial]] for the {{Atari}} port of ''VideoGame/MarioBros'') long before he was shown as such in the games. Mario's love of Italian food from the same show was likewise canonized in ''VideoGame/SuperMario64''.
** The Koopalings in ''VideoGame/SuperMarioBros3'' were originally unnamed in Japan, but the English localization gave them names. These would eventually become their official Japanese names in ''VideoGame/SuperMarioWorld''.
** Mario spinning Bowser around by his tail in ''VideoGame/SuperMario64'' originated in the 1986 Japanese animated movie ''TheGreatMissionToSavePrincessPeach''. That clip can be seen in [[http://www.youtube.com/watch?v=1iTy5X0C7Yc this]] furikake commercial.
* Donkey Kong's white palette in ''VideoGame/SuperSmashBros'' might be based on Eddie the Mean Ol' Yeti from the ''WesternAnimation/DonkeyKongCountry'' cartoon series, who was essentially a white-furred version of Donkey Kong.
* There are quite a few examples from the ''Franchise/MassEffect'' series:
** Technically, even [[ReasonableAuthorityFigure Captain Anderson]] and [[BigBad Saren]] are examples of this; they're the main characters of ''Mass Effect: Revelation'', the prequel novel released before ''VideoGame/MassEffect1''.
** Jacob Taylor and Miranda Lawson first appeared as [[HeroOfAnotherStory the protagonists of]] ''Mass Effect: Galaxy'' before becoming party members in ''VideoGame/MassEffect2''. In Jacob's case, he's probably one of the few video game characters to go from being a PlayerCharacter in one game to just a party member in a later one. Miranda herself had another appearance in ''Mass Effect: Redemption'' before ''Mass Effect 2'' came out.
** The Illusive Man first appeared in the novel ''Mass Effect: Ascension'', a year and a half before his main series debut in ''Mass Effect 2''.
** Feron, Liara's drell companion in the comic ''Mass Effect: Redemption'', returns as a character in ''Mass Effect 2'''s "Lair of the Shadow Broker" {{DLC}}. In fact, the whole mission revolves around rescuing him from the Shadow Broker. The fact that [[spoiler:Liara becomes the Shadow Broker]] at the end is kind of an unintentional consequence of the whole thing.
** Kai Leng, RecurringBoss in ''VideoGame/MassEffect3'', first appeared in the novels ''Mass Effect: Retribution'' and ''Mass Effect: Deception''.
** Dr. Eva Coré from ''Mass Effect 3'' seems like an example of this at first. Eva Coré is one of Jack Harper's (a.k.a. [[spoiler:the Illusive Man]]) companions in the comic book ''Mass Effect: Evolution'', which takes place 20 years before the series proper. [[spoiler:However, Eva ''dies'' at the end of the comic. For anyone who's read ''Evolution'', the fact that one of the scientists on the Mars research facility has her name should be the first clue that something is ''very wrong'' with this woman. She turns out to be a FemBot [[TheMole mole]] created by the Illusive Man to sabotage the facility.]]
** Kahlee Sanders was a main character in all four ''Mass Effect'' novels (''Revelation, Ascension, Retribution,'' and ''Deception'') before becoming a minor {{NPC}} in ''VideoGame/MassEffect3''.
* From ''Franchise/MortalKombat'', the character Quan Chi apeared first in the {{animated adaptation}} to later make his game debut in ''Mortal Kombat Mythologies: Sub-Zero'', and eventually made his way into the main series with ''VideoGame/MortalKombat4''. Additionally, the concept of "Order vs. Chaos" was first used in the ComicBookAdaptation, years before the inclusion of the Order and Chaos Realms and its representative characters in ''Deception''.
* ''VideoGame/SilentHillHomecoming'' does this with the art style, architecture, and specific locations from the non-canonical ''Film/SilentHill'' movie.
* In ''Franchise/SonicTheHedgehog'', Amy Rose and Charmy Bee are both canon immigrants. Both first appeared in a comic series in Shogaku Yonensei, published in Japan in 1992. While elements such as Nikki transforming into Sonic and being bullied by a lizard called Anton were left firmly in the comic, Amy (Nikki's girlfriend in the comics, ironically) was picked up and debuted officially in ''VideoGame/SonicTheHedgehogCD'' (also ironic in the fact that she was labeled Princess Sally in the American manual anyway), while Charmy (one of Nikki's friends) was used as one of the characters in ''VideoGame/KnucklesChaotix'' (even more irony in the fact that Sonic didn't have any appearance in that game aside from appearing in the good ending credits, thus didn't interact with him). Their backgrounds were, naturally, radically altered as a result.
** In the ''WesternAnimation/SonicSatAM'' and ''WesternAnimation/SonicUnderground'' television series, there were robot characters called [=SWATbots=]. These robots were added into the recent Sonic RPG, ''[[VideoGame/SonicChronicles Sonic Chronicles: The Dark Brotherhood]]'', as a reference.
** Likewise in ''Sonic Chronicles'', Procurator Shade and the Nocturnus Tribe Echidnas share everything except their names with Julie-Su and the Dark Legion from the American Archie Sonic comics continuity - making them canon immigrants under false passports.
** In recent games, like ''VideoGame/SonicUnleashed'' and ''Sonic and the Black Knight'', Sonic can be seen eating chili dogs, something Sega picked up from the '90s cartoons. In ''Unleashed'', eating chili dogs will actually give you some XP.
** Arguably, the concept of Eggman and robotic buddies that's happened in at least [[WesternAnimation/AdventuresOfSonicTheHedgehog two]] [[Anime/SonicX adaptations]], has made it into recent games with Cubot and Orbot.
*** All that's missing is the tertiary robot with an odd job (Coconuts the janitor and Bokkun the messenger filled this position in the aforementioned respective adaptations).
*** Some of the robots that Eggman made in ''[=AoStH=]'' and/or the early Archie comics also appear in his own puzzle spin-off, ''DrRobotniksMeanBeanMachine'' (the aforementioned Coconuts included).
** Eggman's name was Americanized as Robotnik for the Genesis games' release in the US, which was changed to back to Eggman during ''SonicAdventure''. ''SonicAdventure2'', however, made the Robotnik name canon by introducing Eggman's grandfather, Gerald Robotnik.
* Originally, NasuVerse WordOfGod stated that it was extremely improbable for two people with the [[MagicalEye Mystic Eyes]] of [[OneHitKill Death Perception]]; hence [[Literature/KaraNoKyoukai Shiki Ryogi]] and [[{{Tsukihime}} Shiki Tohno]] had to exist in a separate AlternateContinuity. However, Shiki Ryogi has just been announced as being in ''VideoGame/MeltyBlood.'' In this case though, the immigration is ''[[TrappedInAnotherWorld quite literal]]''.
** Also, Kanshou and Bakuya Overedge form from the VisualNovel/FateStayNight anime became a canon.
* The ''Franchise/ResidentEvil'' series features a machine known as the Red Queen, an Umbrella supercomputer dedicated to managing the company's assets. The Red Queen, however, is a canon immigrant from the non-canonical [[Film/ResidentEvil movies based off of the games]]. In ''[[VideoGame/ResidentEvilTheUmbrellaChronicles The Umbrella Chronicles]]'', it has a more distinctly adult voice.
** ''VideoGame/ResidentEvil4'' also lifted the laser room of death from the movie. Albeit, it's beatable in the game.
** The Chris Redfield and Leon S. Kennedy seen ''VideoGame/ResidentEvil6'' take the likeness of their counterparts in ''Film/ResidentEvilAfterlife'' and ''Film/ResidentEvilRetribution''.
* Similarly, the transformation effect in the film ''Film/SilentHill'' was used for subsequent games in the series.
* The ''VideoGame/SuperRobotWars'' series is loaded with these, ranging from the {{Mazinkaiser}} in ''F Final'' to the [[{{Zeorymer}} Great Zeorymer]] in ''VideoGame/SuperRobotWarsJudgment'' and the [[{{Dancougar}} Final Dancougar]] in ''[[VideoGame/SuperRobotWarsAlpha Super Robot Wars Alpha 3]]'' (the latter two having only existed on concept/paper prior to the games). Then there's whole stitch about [[VideoGame/SuperRobotWarsOriginalGeneration Elzam von Branstein and Ratsel Feinschmeker]]: Elzam was introduced in ''VideoGame/SuperRobotWarsOriginalGeneration'', but he appears in ''Alpha 2'' as Ratsel, then subsequently back as Ratsel in the sequel ''Original Generation 2'', where he gets his AceCustom Aussenseiter, which then reappears in the last ''Alpha'' game. Elzam was loosely mentioned first in the obscure ''VideoGame/SuperRobotSpirits'' and in the back-story of ''Alpha''. It isn't until ''Original Generation'' that he appeared in full.
* While the appearances of Monolith Soft's ''VideoGame/NamcoXCapcom'' OriginalGeneration in ''[[EndlessFrontier Super Robot Wars OG Saga: Endless Frontier]]'' came off as a simple guest starring, their reappearance in the sequel ''Endless Frontier EXCEED'' may very well serve as the continuation of their story, suggesting that Monolith is willing to transfer their characters into the ''VideoGame/SuperRobotWars'' series in order to keep using them.
* A few characters from the ''Anime/{{Pokemon}}'' anime cameoed in the Yellow version, notably Team Rocket's Jessie and James (who show up to fight you a few times). There's also a few references to anime counterparts (like Brock saying he wants to be a breeder, which seems to also be the case in HGSS making this a full-fledged Canon Immigrant).
** There is also, to a lesser extent, the Nurse Joy model. Though the games do not call the nurses Nurse Joy[[note]]Actually, they do. In the Japanese versions, they are known as "joi", which actually refers to a female doctor[[/note]] and the nurses originally had blue hair, from Yellow Version onward the nurses resemble Joys more and more, to the point where you can clearly see that the [[VideoGame/PokemonXAndY Kalos region]]'s nurses looks exactly the same as how the Nurse Joys from Unova are portrayed.
** A gameplay immigrant was the "dash button"; it originally debuted in the second game adaptation of the trading card game before moving over to the third generation, and has been in the main games since.
** In ''Pokémon Pinball'', Ecruteak and Cianwood City's music from ''[[VideoGame/PokemonGoldAndSilver Pokémon GSC]]'' was originally the Blue Field theme. Plus, the "Catch 'Em" theme in said field was originally the 1st Japanese opening theme of the anime, "Aim to Be a Pokémon Master".
** The font used in the American logo was later used in the Japanese theme park [=PokePark=], and eventually would be used for the [[http://www.gamefaqs.com/wii/976803-pokepark-wii-pikachus-adventure/images/box-144253 Japanese box art]] for ''VideoGame/PokeParkWii'' and its sequel.
** The [[TabletopGame/{{Pokemon}} Pokémon TCG]] introduced many new elements:
*** Some newly-introduced moves would become fully fledged game moves in new generations, such as Flail and Rain Dance.
*** Abilities first appeared in the card game as "Pokémon Powers" and later "Poké-Powers/Bodies" before becoming a mechanic in ''[[VideoGame/PokemonRubyAndSapphire Ruby/Sapphire]]''. Strangely, it took eight years for the card game to also start using the term.
*** Artwork for some items such as [[http://bulbapedia.bulbagarden.net/wiki/Potion_%28Base_Set_94%29 the original Potion]] would be canonized in ''[=FireRed/LeafGreen=]''.
* Most of {{Pac-Man}}'s supporting cast -- Ms. Pac-Man, Pac-Man Jr., Baby Pac-Man, and Professor Pac-Man -- were all originally from unauthorized Midway sequels to the arcade game.
* Originally in ''VideoGame/{{Kirby}}'', Meta Knight's two sidekicks were Meta Axe and Meta Mace, but in [[Anime/KirbyOfTheStars the anime]] Meta Knight is assisted by Sword and Blade Knight. Likely because of this, in ''Kirby Super Star Ultra'', Meta Knight has Sword and Blade as helpers when playable. It helps that Blade Knight is already a helper.
** The design of King Dedede's castle from the anime series was used in ''Squeak Squad'', ''Epic Yarn'', and ''Mass Attack''.
** Likewise, the Battleship Halberd's design from the anime appeared in ''Squeak Squad'', then ''VideoGame/SuperSmashBros Brawl'' came out and the Halberd's design from that game was used instead in ''Super Star Ultra'' and ''Epic Yarn''.
** The water ability from the anime has also appeared in ''VideoGame/KirbysReturnToDreamLand''.
** Also, Kirby started saying "Poyo" in the anime, this has been transferred into ''Epic Yarn'', ''Return to Dream Land'', ''Mass Attack'' and ''[[VideoGame/SuperSmashBros Brawl's]]'' Subspace Emissary mode.
** A good amount of anime characters make their first game appearances in Mass Attack's mini-games, including (but not limited to) Escargoon, Customer Service, Max Flexer, and Chef Shiitake.
** The spear-carrying Waddle Dees from the anime show up in later Kirby games. They later become ''playable characters'' in ''Return to Dream Land''.
** In some later games, Meta Knight wraps his cape around himself when he's not using it, a nod to the anime.
* The GBA port of ''VideoGame/BreathOfFireI'' gives names to three [[NoNameGiven nameless]] {{Guest Star Party Member}}s, with two of them (Sieg and Rai) taken straight from an early manga adaptation of the game, ''Princess of The Wings''.
* In ''VideoGame/DeadSpace'', the Divet Autopistol from the first game is revealed to have been left behind by the characters in its prequel sequel.
* {{Konami}} decided to link their popular ''Franchise/{{Castlevania}}'' series to the famous Bram Stoker novel ''Literature/{{Dracula}}'', so when they designed ''VideoGame/CastlevaniaBloodlines'', instead of starring a Belmont, it featured a member of a related branch family who had emigrated to America -- the Morrises. John Morris (the member in question) is the son of the novel's Quincey Morris.
* Unintentional, but Lamp Oil, which first appears as an item in both [[VideoGame/TheLegendOfZeldaCDIGames Link: The Faces of Evil and Zelda: The Wand of Gamelon]] becomes a real item in ''VideoGame/TheLegendOfZeldaTwilightPrincess''.
* Quite a few things that have originated in ''VideoGame/SuperSmashBros'' have found their way into its originating franchises:
** Captain Falcon's Falcon Punch [[http://www.youtube.com/watch?v=FFtw7qW7Vcw makes an appearance]] in the ''VideoGame/{{F-Zero}}: GP Legend'' anime.
** The Green Missile and the Egg Roll are both utilized by Luigi and Yoshi in later Mario sports games. Peach using her hips as an offense in ''VideoGame/MarioKart Double Dash'' may also qualify. The Whirling Fortress was also never used by Bowser before Melee, whereas he does similar moves rather often now.
** ''VideoGame/MetroidPrime'' was the first Metroid game to include homing missiles, a year after Samus used them in Melee.
** Kirby actually fought Master Hand and Crazy Hand in ''Kirby and the Amazing Mirror''. Inhaling them gave him a reduced version of his Melee moveset.
** Dedede's Jet Hammer may have been the inspiration for his tricked-out mallet in The Revenge of the King in ''VideoGame/KirbySuperStar Ultra''. Also some shots of the Halberd in cutscenes in ''Ultra'' were re-used from ''Brawl'''s version of it as a stage.
** ''KidIcarusUprising'' features the re-imagined versions of Pit and Palutena that debuted in Brawl. It also utilizes one of Pit's alternate colors to create a new character in Dark Pit.
* The [[http://www.youtube.com/watch?v=N37K08lpRo8 American Commercial]] for the first ''VideoGame/GoldenSun'' game infamously had absolutely nothing to do with the game itself, save for featuring fantastic elements. It involves an opera house's pit orchestra fighting off a horde of gargoyles, and then taking down a dragon that took the form of a chandelier. [[RuleOfCool Very cool]], but it had nothing to do with the actual game. And then ''VideoGame/GoldenSunDarkDawn'' came around, and introduced a new summon named Crystallux. According to the legend, he was a dragon that so loved the music in the Belinsk opera house that he turned himself into a chandelier, so that he could live in the opera house and hear the music whenever he wished. Yes. [[http://www.youtube.com/watch?v=cMnV5hH50Ug It's the exact same dragon]]. He even tries to help you fight off some particularly nasty monsters when the opera house gets attacked. Thankfully, he doesn't get killed like he does in the commercial.
** Although the summon sequence begins with him rising [[CallBack from the shards he was left in]] from the commercial.
** The woman that dies defending the dragon from the monsters resembles the woman in the commercial.
* Epona the horse, from the later games in the ''Zelda'' series, may qualify as this. Quite a few years before she made her series debut in ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', Link had a similarly-colored horse named Catherine in both the [[WesternAnimation/TheLegendOfZelda cartoon]] and the [[ComicBook/TheLegendOfZelda comic book adaptation]], both of which were based on the [[VideoGame/TheLegendOfZelda first]] [[VideoGame/ZeldaIITheAdventureOfLink two]] games in the series.
** Spryte from the cartoon may very well have been an inspiration for Navi in ''Ocarina of Time'', too.
* VideoGame/{{Pitfall}} II: The Lost Caverns features Pitfall Harry's niece Rhonda, and their cowardly pet mountain lion Quickclaw, who were both originally created for animated segments from SaturdaySupercade.
* Although it took until the end of the trilogy, ''[[GearsOfWar Gears of War 3]]'' brings in a large selection of characters from the ExpandedUniverse, such Jace Stratton, Samantha Bryne and Bernadette Mataki into the playable campaign. All of them previously existed in the comics and novelizations. In a variation, Michael Barrack, who first appeared and was [[spoiler: KilledOffForReal]] in the novels, will be available as future DownloadableContent. Surprisingly, [[SamusIsAGirl Alex]] [[ActionGirl Brand]] from the graphic novels has no planned appearance, much to some fans' disappointment.
* In ''VideoGame/DonkeyKong64'', the Crystal Coconuts and the concept of Cranky Kong as a combination magician and MadScientist who made magical potions both came from the animated series of ''WesternAnimation/DonkeyKongCountry''.
* In the ''Franchise/{{Halo}}'' series, Dr. Catherine Halsey, who makes her first in-game appearance in 2010's ''VideoGame/HaloReach'', had already been playing a major role in the ExpandedUniverse since her debut in the 2001 novel ''Literature/HaloTheFallOfReach''.
** Several other major EU elements introduced in ''The Fall of Reach'' have made their way into the games, including: [[BadassNormal Orbital Drop Shock Troopers]] ([=ODSTs=]), who first appear in-game in ''{{VideoGame/Halo 2}}'' and would eventually star in [[VideoGame/Halo3ODST their own game]]; The Office of Naval Intelligence (ONI), which got a one-line reference in ''{{VideoGame/Halo 3}}'' before playing a more important role in the plots of the later games; and Covenant Engineers, who first show up in-game in ''VideoGame/HaloWars'', but got a starring role (and redesign) in ''ODST''.
** The SPARTAN-III program was introduced in the novel ''Literature/HaloGhostsOfOnyx'', which was published about a year before the release of ''Halo 3''. In ''Reach'', all but one member of Noble Team, including the player character, are SPARTAN-[=IIIs=].
** The current BigBad of ''{{VideoGame/Halo 4}}'''s Spartan Ops co-op campaign, Jul 'Mdama, first appeared as one of the main characters in the novels ''Literature/HaloGlasslands'' and ''Literature/HaloTheThursdayWar''.
* Howard Blackwood, a character from the comic ''Silent Hill: Past Life'' appears in SilentHillDownpour.
* Several characters introduced in ''{{Starcraft}} 2'' came from novels, including Crown Prince Valerian Mengsk (the ''Dark Templar'' trilogy), Tychus Findlay (''Heaven's Devils''), Matt Horner (''Queen of Blades''), November Annabella "Nova" Terra (''Starcraft: Ghost: Nova'').
* Also by Blizzard, ''WorldOfWarcraft''. Several years ago Dave "Fargo" Kosak made two Warcraft-based webcomics starring a Dwarf named Flintlocke, aptly titled ''FlintlockesGuideToAzeroth'' and ''[[FlintlockesGuideToAzeroth Flintlocke Vs. The Horde]]''. When Kosak was later hired as Lead Quest Designer for ''WorldOfWarcraft'', Flintlocke and several other characters from the comics were put in the game as minor [=NPCs=].
* The North American box art for ''VideoGame/MegaMan1'' is notorious for its depiction of a middle-aged man in a blue and yellow rubber suit that looks nothing like but is nonetheless supposed to represent Mega Man. Oh, and he wields a pistol rather than having an arm cannon. Subsequent box art depictions would look more similar to Mega Man's actual appearance (the arm cannon, for example, being only introduced in the ''Mega Man 3'' box art), until finally the North American/PAL and Japanese appearances of the character would be the same. Jump to more than twenty years later: the weird version of Mega Man who appeared on the North American box art for the first game was announced as a playable character ("Bad Box Art Mega Man") in the now-cancelled ''Mega Man Universe''. Later, Mega Man would appear as a playable character in ''VideoGame/StreetFighterXTekken'', but as a twenty years older (and notably pudgier) version of the middle aged man from the North American box art.
* ''VideoGame/{{Persona 4}}''
** Aika Nakamura, a minor recurring character introduced in the [[Anime/{{Persona4}} anime adaptation]] of ''VideoGame/{{Persona 4}}'', is mentioned by name in both ''Persona4Arena'' and ''[[PolishedPort Persona 4: The Golden]]''.
** Labrys was first mentioned in a ''VideoGame/{{Persona 3}}'' Drama CD, but becomes one of the main playable characters in ''VideoGame/Persona4Arena''.
* ''VideoGame/NinjaGaiden'' and ''VideoGame/DeadOrAlive'' has this for the ninja characters. First, of course, was Ryu Hayabusa showing up in ''Dead or Alive''. The ''Ninja Gaiden'' revival games would feature [=DoA=]'s Ayane and Kasumi a few times. In ''Dead or Alive 5 Ultimate'', ''[=NG=]'' 's Momiji and Rachel are playable fighters.
* ''JeffWaynesWarOfTheWorlds'', which is inspired by both H.G Wells' novel and the RockOpera of the same name, became a canon immigrant when said rock opera was re-imagined for a live stage show. The background film for the music features the game's model of the Martian Flying Machine, and also a "prologue" set on Mars taken from one of the game's intro movies (the audio from the intro movie is used unedited in the original, but is re-dubbed with new dialogue in the "New Generation" UpdatedRerelease).
* In the ''VideoGame/StarFox'' series, Krystal has been Fox [=McCloud=]'s love interest for the last several games, however she began life as one of two main characters in the unreleased N64 game ''Dinosaur Planet'' from Rare, and she was originally envisioned as a blue cat rather than a blue fox. The other main character was her brother Saber, who bore a passing resemblance to Fox. Upon seeing the game during development, Creator/ShigeruMiyamoto noticed the resemblance and suggested that the game be turned into a ''Star Fox'' spinoff. The game was eventually moved to the [=GameCube=] and was retooled into ''VideoGame/StarFoxAdventures''. One of the changes in this development was that Krystal underwent a redesign-- now she was a fox, as well as being older and sexier.
[[/folder]]

[[folder:Web Comics]]
* In ''SomethingPositive'', Fluffmodius, the "little blue freak" that yells "HELLO NEW FRIEND"! at Kharisma, was originally a one-off joke for his non-continuity strips for ''Rhymes With Witch''. Let that be a lesson to you: Do not taunt the WordOfGod.
** ...and going the other way, Rippy the Razor was a one-off gag in ''SomethingPositive'', but now is Randy's tormentor in some RWW material.
* The Dini-verse characters Kathy Duquesne, Roxanne Ballentine, and Sonia Alcana from the DC Animated Batwoman movie are regular characters on Roleplay/DCNation, having been recruited by Hawkman to police his town between incarnations.
* Somewhere askance of canonical Webcomic/ProblemSleuth, the Midnight Crew, a four-man mercenary group, was created as a donation request that spent most of their time fighting the protagonists. In ''Webcomic/{{Homestuck}}'' they are exiles in the [[AlternateUniverse Trolls' session]], and were given about a month of screentime and character development. Later, in the [[AlternateUniverse Kids' session]], they are given new names, and the leader ascends to BigBad status.
** In another ''Homestuck'' example, when Andrew Hussie put the Homestuck adventure game up on Kickstarter, he promised humorous rewards for extremely high donations, including "Your fantroll will become canon" for a donation of $10,000. He was incredibly surprised when not one but two people ''actually donated that amount''. True to his word, those trolls (Mierfa Durgas and Nektan Whelan) did show up in the comic's canon... but the $100,000 prize was "Your fantroll will survive past their first panel", so [[DeathByCameo they didn't last long]].
* Season 4 of ''SurvivorFanCharacters'' pitted ten canon characters, such as [[VideoGame/FinalFantasyVII Sephiroth]], [[KingdomHearts Riku]], [[VideoGame/TheWorldEndsWithYou Shiki]], and [[WesternAnimation/{{Animaniacs}} Minerva Mink]] against ten fan-made characters. In other seasons, characters from the fan-characters canon universes visit on the family and friend reward challenge, and the host of all 8 seasons so far has been [[Series/{{Survivor}} Jeff Probst]].
* ''WebComic/DragonBallMultiverse'': Even though the authors are ''[[FandomBerserkButton not]]'' fans of ''DragonBallGT'', U18 Bra is clearly the non-fighting, typical teenager [=GT=] incarnation. She even wears the same outfit. Word on this is that one of the authors liked her character even though she's from in their minds a bad series.
[[/folder]]

[[folder:Web Original]]
* Yelizaveta 'Bounce' from ''SurvivalOfTheFittest'' version four started off as a character in the 'In-Universe Chat' (a chatroom where [=SOTF=] members could [=RP=] being members of the show's audience). After some time, she was brought into the version four pregame as a fully-fledged character.
* Lastie's ''Fanfic/{{PRIMARCHS}}'' has Farseer Kyli, a character who was originally created to {{MST}} the story. Lastie featured her in the story's 3rd arc.
* Barry Kramer, originally the editor for WebVideo/JonTron, has officially transferred over full-time to ''WebVideo/GameGrumps'', which no longer includes Jon.
[[/folder]]

[[folder:Western Animation]]
* WesternAnimation/WoodyWoodpecker has two: His niece and nephew Knothead and Splinter originally appeared in the comics, but were eventually brought over into his theatrical toons.
* Disney's Max Goof was imported into the Disney canon from ''WesternAnimation/GoofTroop''. This is unique in that Max has no "iconic" depiction to revert to and, unlike other characters, has aged appreciably over time. However, Max's appearance and role is arguably based on Goofy Jr., a character used in Goofy's original cartoon shorts (he once introduced himself as "Goofy Jr., ma'am").
* In the ''WesternAnimation/TomAndJerry'' cartoons, the grey mouse who could speak came from the licensed comics. There, he was called Tuffy, and was Jerry's friend; when he was adapted, he became Nibbles, and Jerry's nephew.
* Lola Bunny. Created for ''Film/SpaceJam,'' she became a regular in ''WesternAnimation/BabyLooneyTunes'', the comic series, and most recently ''WesternAnimation/TheLooneyTunesShow''.
** Before Lola, there was Honey Bunny, Bugs's girlfriend in the comics, who made a cameo appearance in the TV special "Bugs Bunny's Thanksgiving Diet".
* The character Oil Slick was originally a toy-only character in the ''WesternAnimation/TransformersAnimated'' series. However, the writers found the idea of a chemical warfare expert who turned into a motorbike with a ram's head on the front (and a ''{{ninja}}'', to boot) rather appealing, and he was later written into both the supplementary comic series and the show itself as part of Team Chaar.
** The Lockdown figure from the ''[[Film/{{Transformers}} Revenge of the Fallen]]'' toyline was later repurposed as G1 Lockdown. Although they're completely seperate characters, their toys are identical and with only small differences in canonical appearances.
** And now, Lockdown is going to appear in ''Age Of Extinction!'' He looks quite different from the ROTF toy, though. (And yes, TF toys usually come before the movie/cartoon/comic they're designed for, but Lockdown's toy came out when AoE couldn't possibly have been planned, years ago; it was more like "Everybody loved that Lockdown guy, let's movie-ify him and see if they'll buy his toy ''twice!''"
* Though ''The Goliath Chronicles'' has been excised from ''WesternAnimation/{{Gargoyles}}'' canon, with the exception of season premiere "The Journey", another part of the series has managed to find its way into fanon and eventually canon: The scene where Hudson's blind Human friend Robbins reveals that he already figured out Hudson was a Gargoyle, particularly the part where he mentions a scent "like old leather and concrete".
** While the comic licensed by Marvel was deemed noncanon, Petros Xanatos appeared in #7 prior to his onscreen appearance in ''Vows''.
* Arguably Disney's best example; while Donald and Daisy Duck premiered in Disney animated shorts, one of Duckburg's most illustrious citizens, [[ComicBook/DisneyDucksComicUniverse Scrooge McDuck]], started as a supporting character in the CarlBarks' DonaldDuck comics in 1947, where he grew in popularity until he wound up getting his own title in the fifties. His first animated appearance was in an educational short called "Scrooge [=McDuck=] and Money" in 1967, and then he starred in the 1983 theatrical featurette ''MickeysChristmasCarol'', as Ebenezer Scrooge. He then co-starred with Goofy in "Sport Goofy in Soccermania" before starring in ''WesternAnimation/DuckTales'', cementing his place as one of the most famous cartoon ducks of all time.
** Meanwhile, Donald's nephews, Huey, Dewey, and Louie, first showed up in the ''SillySymphonies'' comic strip (which Donald starred in at the time). Their first appearance was later adapted into an animated short, and the rest is history.
* Matilda and Sergeant Slipper were created for the animated adaptation of ''ComicStrip/DennisTheMenaceUK''. They both made appearances later in ''TheBeano''.
* A few elements of the 4Kids ''WesternAnimation/{{Teenage Mutant Ninja Turtles|2003}}'' have made their way into the [[ComicBook/TeenageMutantNinjaTurtlesMirage original comic book universe]], including the Battle Nexus, and its proctor, the Gyoji; and more recently, Hun and (off-panel only, due to the series' cancellation) Agent Bishop.
* On ''WesternAnimation/TheFairlyOddparents'', two of [[ShowWithinAShow the Crimson Chin's]] villains, the Iron Lung and the Brass Knuckles, appeared in the non-canon webtoons before appearing in the series proper.
* The AnimatedAdaptation of ''Literature/AnneOfGreenGables'' features the characters of Felicity, Felix, & Hetty King as well as suspected witch Peg Bowen, all of whom originally appeared in the live-action series RoadToAvonlea (known just as "Avonlea" when it aired in the US on DisneyChannel). Though Sullivan Productions created both shows, so they're only reusing characters they created.
* King Louie of Disney's ''Disney/TheJungleBook'' has appeared in a few other works based on the stories that the Disney film is based on, most notably ''Comicbook/{{Fables}}'', which, as an afterthought, the creator Bill Willingham described as, "a very good example on why it's best to go back to the source material before one embarks on a major story, rather than rely on often faulty memory of which characters were original canon and which weren't."
* [[WordOfGod According to Matt Groening]], Milhouse made his first appearance in a ''[[WesternAnimation/TheSimpsons Simpsons]]'' Butterfinger commercial.
* The character of Brutus from ''WesternAnimation/{{Popeye}}'' is an odd twist on the trope. The original ''Thimble Theater'' NewspaperComics used the character Bluto first. After a two week fight with Popeye in the comics, Fleischer Studios thought he would be a good character to include in their theatrical cartoon shorts. Thinking (mistakenly) that Bluto was a creation of Fleischer Studios, Segar created a CaptainErsatz ''of his own character'', named Brutus. Later in the Hanna-Barbara cartoons, Bluto was replaced with Brutus, the canon immigrant from the comics, who looked identical but had a different name, thus confusing children everywhere.
* The antagonists from both live action ''WesternAnimation/{{Ben 10}}'' films have appeared in ''WesternAnimation/Ben10UltimateAlien''. In that sense, Nanomech is one too.
* As pointed out on its' main page, [[RockTrio The]] [[PerkyGoth Hex Girls]] from ''WesternAnimation/ScoobyDooAndTheWitchsGhost'' could technically count, since they debuted in that movie, and have since gone on to appear in another movie, an episode of ''WesternAnimation/WhatsNewScoobyDoo'' and 2 episodes of ''WesternAnimation/ScoobyDooMysteryIncorporated''.
* ''ThomasTheTankEngine'', originally an adaptation of ''TheRailwaySeries'' novels, also has a popular tie in magazine that still runs to this day. Not only did the show adapt original stories from the magazine for episodes of Seasons Three and Five, but as of Season Seventeen, their original writer, Andrew Brenner, is now the lead writer for the show itself.
[[/folder]]

[[folder:Real Life]]
* Audio-animatronic figures of [[Film/PiratesOfTheCaribbean Jack Sparrow and Captain Barbossa]] have been added to the DisneyThemeParks [[RecursiveAdaptation ride that inspired their movie franchise.]] An odd case, since the original version of the ride didn't have any story, as such.
** Some say that the plot of the movie was partially based on a canceled ''VideoGame/MonkeyIsland'' [[http://www.cracked.com/article_19443_7-classic-movies-you-didnt-know-were-rip-offs.html movie]], which was in turn based on a game inspired by the Pirates of the Caribbean ride.
*** Actually, it gets deeper than that and much more complicated. ''Monkey Island'' was ''visually'' inspired by the Pirates of the Caribbean ride, but the ''atmosphere'' and story elements were inspired by the novel ''Literature/OnStrangerTides''. The Pirates of the Caribbean movies have a great deal that seems to have been lifted straight out of ''On Stranger Tides'', as well. Now that ''On Stranger Tides'' is a Pirates of the Caribbean movie we've in some strange way come full circle.
* When NASA opened a poll to name the new ISS module, Creator/StephenColbert rallied his fans cast write-in votes for "Cobert." After the poll closed (and "Cobert" had won by a large margin) NASA declined to use the name, opting for Tranquility instead. A few months later NASA installed the [[FunWithAcronyms Combined Operational Load Bearing External Resistance Treadmill (COLBERT)]] as a nod to the contest winner, complete with mission patch.
* In ''WesternAnimation/TheSimpsons'' episode "Hungry, Hungry Homer", the Springfield baseball team, the Isotopes, threatened to move to Albuquerque. A few years later, the minor league team in Albuquerque changed its name to the Albuquerque Isotopes.
[[/folder]]

----