History Main / CanonInvasion

** During UsefulNotes/TheGoldenAgeOfComicBooks, now-iconic characters such as Franchise/{{Superman}}, Franchise/{{Batman}} and Franchise/WonderWoman were initially not thought of as being part of the same continuity. The consolidation of these superhero stories into a single setting was largely a Silver Age phenomenon.

** Characters such as ComicBook/PlasticMan, the ComicBook/{{Blackhawk}}s and the [[ComicBook/FreedomFightersDC Freedom Fighters]] were originally published by Quality Comics until DC bought them out in 1956. Originally set in a parallel universe, the characters were brought into the main DC universe in ''ComicBook/CrisisOnInfiniteEarths''. The speedster hero Quicksilver (no, not [[Characters/MarvelComicsQuicksilver that one]]) was also reinvented as Max Mercury and became a supporting character to Franchise/TheFlash. The original Quality Comics characters are now [[PublicDomainCharacter in public domain]].

* Wrestling/KennyOmega began his HeelTurn in [[Wrestling/AllEliteWrestling AEW]] at the end of 2020, and cemented it in the beginning of 2021 when his former Bullet Club partners Luke Gallows and Karl Anderson (who are signed to Impact Wrestling, not AEW) invaded AEW Dynamite as his enforcers. Within the storyline, Omega is also appearing at IMPACT tapings to challenge for their championship title.

** Aside from actually calling the ComicBook/{{Micronauts|MarvelComics}}, the Micronauts, all the characters created for the comic can still be used and are all canon. Hell the character Bug was a member of the Comicbook/GuardiansOfTheGalaxy and Captain Universe nearly killed Juggernaut in a Spider-Man comic.

** ''Franchise/EvilDead'' fits in here as the Dynamite ''Comicbook/ArmyOfDarkness'' comics got referenced in the ''ComicBook/MarvelZombies'' crossover and numbered in an issue of ''The Official Handbook to the Marvel Universe''.

** Licensed Robert E. Howard characters are probably the most firmly fit into the Franchise/MarvelUniverse. For example Conan (major enemy of Kulan Gath, enemy of Set a serpent god who powers the Serpent Crown, and ally to Comicbook/RedSonja who would crossover with Spider-Man twice), King Kull (who ruled over Namor's Atlantis in pre-history), and Solomon Kane (appearing in back up stories in ''Savage Sword of Conan'', as well as getting his own mini-series.) Dark Agnes has also been canonized as part of the Marvel Universe alongside Howard's other creations since 2020.

** Creator/ImageComics character [[Characters/{{Spawn}} Angela]] got pulled into 616 by the events of ''Comicbook/AgeOfUltron'', and joined up with the ComicBook/GuardiansOfTheGalaxy. [[spoiler:She has since been retconned into [[ComicBook/TheMightyThor Thor]] and ComicBook/{{Loki}}'s long-lost sister]]

** Characters such as ComicBook/PlasticMan, the ComicBook/{{Blackhawk}}s and the [[ComicBook/FreedomFightersDC Freedom Fighters]] were originally published by Quality Comics until DC bought them out in 1956. Originally set in a parallel universe, the characters were brought into the main DC universe in ''ComicBook/CrisisOnInfiniteEarths''. The speedster hero Quicksilver (no, not [[Characters/Avengers60sMembers that one]]) was also reinvented as Max Mercury and became a supporting character to Franchise/TheFlash. The original Quality Comics characters are now [[PublicDomainCharacter in public domain]].

** Subverted in the case of the Marvel Franchise/DocSavage comics, which didn't last long and the only proof of Doc existing in Earth-616 is him crossing over with the Thing and Spider-Man.

* The ComicBook/HasbroComicUniverse was a shared setting of various classic Hasbro properties that were never originally written with the intention of sharing the same world. This includes Franchise/{{Transformers}}, Franchise/GIJoe, ComicBook/{{MASK}}, ComicBook/RomSpaceknight, ComicBook/{{Micronauts}}, ComicBook/ActionMan, and WesternAnimation/{{Visionaries}}. As of 2018, this shared universe has come to an end, with some of the associated titles being rebooted.

** Aside from actually calling the ComicBook/{{Micronauts}}, the Micronauts, all the characters created for the comic can still be used and are all canon. Hell the character Bug was a member of the Comicbook/GuardiansOfTheGalaxy and Captain Universe nearly killed Juggernaut in a Spider-Man comic.

* ''Series/{{Eureka}}'', ''Series/Warehouse13'' and ''Series/{{Alphas}}'' were not part of the same SharedUniverse conceptually; this was retconned in later and it shows. [[RedSkiesCrossover Nothing of significance was done with the concept]], to the point that if you skipped the specific crossover episodes, you wouldn't even know that they did share a universe. The most notable thing that happened was [[StrangledByTheRedString a contrived romance]] between two characters from ''[=EUReKA=]'' and ''Warehouse 13'', which did not last past the initial crossover episodes.

* ''Series/{{EUReKA}}'', ''Series/Warehouse13'' and ''Series/{{Alphas}}'' were not part of the same SharedUniverse conceptually; this was retconned in later and it shows. [[RedSkiesCrossover Nothing of significance was done with the concept]], to the point that if you skipped the specific crossover episodes, you wouldn't even know that they did share a universe. The most notable thing that happened was [[StrangledByTheRedString a contrived romance]] between two characters from ''[=EUReKA=]'' and ''Warehouse 13'', which did not last past the initial crossover episodes.

** Going back to UsefulNotes/TheGoldenAgeOfComicBooks, even characters such as Franchise/{{Superman}}, Franchise/{{Batman}} and Franchise/WonderWoman were initially not thought of as being part of the same continuity.
** Characters such as ComicBook/PlasticMan, the ComicBook/{{Blackhawk}}s and the [[ComicBook/FreedomFightersDC Freedom Fighters]] were originally published by Quality Comics until DC bought them out in 1956. Originally set in a parallel universe, the characters were brought into the main DC universe in ''ComicBook/CrisisOnInfiniteEarths''. Speedster hero Quicksilver (no, not [[ComicBook/{{Quicksilver}} that one]]) was also reinvented as Max Mercury and became a supporting character to Franchise/TheFlash. The original Quality Comics characters are now [[PublicDomainCharacter in public domain]].

** Although technically always owned by the same company, ''ComicBook/TheEternals'' at Marvel is otherwise an example. The series was created by Creator/JackKirby as separate from the Franchise/MarvelUniverse, but later brought into it, with the result that, for instance, there would be Marvel Universe versions of gods but Eternals who were posing as those same gods.
*** This was [[LampshadeHanging lampshaded]] in an issue of ComicBook/TheMightyThor where it was revealed The Eternals and The Olympians had made a pact so the former would "represent" the latter in front of mortals.
** Also Machine Man originally appeared in issue #8 of Kirby's monthly comic of ''2001: A Space Odyssey'' where each issue a different person encounters the 2001 monolith. Machine Man later got his own series and was integrated into the Marvel Universe.
*** Many references from the movie were [[{{Rewrite}} rewritten away]]. However, it is sporadically mentioned that the creators of the monoliths were [[spoiler:the Celestials]].

** The Creator/{{Wildstorm}} Comics universe. Originally part of a loosely-defined Creator/ImageComics universe, Wildstorm was integrated into the DCU {{Multiverse}} as "Earth-50" with a series of crossovers involving Franchise/{{Superman}}, [[ComicBook/WildCATsWildStorm Majestic]], and ComicBook/CaptainAtom. The ComicBook/New52 reboot then integrated the characters into the main DC universe.

** Believe it or not, when Marvel briefly had the rights to publish Franchise/{{Godzilla}} comics, Big G himself was a character in the Marvel Universe. And ''it's still considered 616 canon!''

** While ignored later on, Spider-Man appeared in early issues of Marvel's [[ComicBook/TheTransformers Transformers]] series, which made the Autobots and Decepticons {{Canon Immigrant}}s to the Marvel Universe, at least temporarily.

** Creator/ImageComics character [[ComicBook/AngelaMarvelComics Angela]] got pulled into 616 by the events of ''Comicbook/AgeOfUltron'', and joined up with the Guardians of the Galaxy. [[spoiler:She has since been retconned into Thor and Loki's long-lost sister]]