Follow TV Tropes

Following

Context Main / CanonWelding

Go To

1%% Image removed per Image Pickin' thread: https://tvtropes.org/pmwiki/posts.php?discussion=1317767979032863100
2%% Please start a new thread if you'd like to suggest a new image.
3%%
4->''"They were independent, separate stories. But now... the stories are combining, that's why the worlds are becoming one."''
5-->-- '''[[Series/KamenRiderKiva Wataru Kurenai]]''', ''Series/KamenRiderDecade''
6
7When an author or creator takes two previously unrelated works and puts them into a single, shared {{continuity}}.
8
9[[SpeculativeFiction Sci-fi]] and fantasy authors don't always write all their novels in the same continuity. A budding new author's first published book might be about {{space pirate}}s in the 27th century, while his sophomore effort might instead be about 21st century scientists reverse-engineering a flying saucer. In response to popular demand, he might end up writing a {{sequel}} to one, or even both of these novels.
10
11Some years later, the author decides that all their works were set in one contiguous world (or something between "country" and "universe"), perhaps in different times or places, perhaps close enough for the characters to meet. Maybe their storytelling ambitions have grown to expand their work into a grand tapestry of fictional history. Maybe connecting the franchises in a bigger one will be a lucrative prospect for them or their works' later owners. Maybe they're creatively spent and bashing their old works together will wring out a few more releases?
12
13Many long-lived genre authors tend to resort to Canon Welding, usually at a later point in their career. They combine two or more distinct series they've created into a single continuity. This isn't just a one-off {{Crossover}}; for series with radically different premises, the foundations of one or both stories can be altered forever.
14
15By combining the two series together, the author can introduce fans of one series to characters they may not be familiar with, inducing them to go out and buy the works in that series, and hopefully attract high sales from fans of both storylines. When done well, it can add a more epic feel to the tale, explore aspects of the two storylines not previously delved into, and make lots of money for the author and his publisher (and there are many examples of this, perhaps most famously ''Literature/TheLordOfTheRings''). When done poorly, especially with stories with radically different settings or styles, it looks and feels like a shallow money-grab and can potentially be a [[JumpTheShark shark-jumping]] moment for both series.
16
17ModularFranchise is when it's done at a corporate level. When this is done by {{fan|Fic}}s, it becomes either a PatchworkFic if all of the components are part of a single Franchise or one variety of FusionFic if they are not. CrossoverRelatives is often used as part of the weld, both at the individual level, by creating a familial relationship between notable characters, and at the group level, such as by establishing similar fantasy or alien species from the fused works as descending from each other or from a common root stock. Compare SharedUniverse, which can be created through Canon Welding if it wasn't shared from the beginning. See also CharacterOverlap.
18
19Supertrope to PublicDomainCanonWelding, which is for when at least one of the works is PublicDomain. For the {{fanon}} equivalent of this trope, see FanonWelding. Not to be confused with welding artillery.
20----
21!!Example Subpages:
22[[index]]
23* CanonWelding/CrossMedia
24* CanonWelding/{{Literature}}
25* CanonWelding/VideoGames
26[[/index]]
27
28!!Other Examples:
29
30[[foldercontrol]]
31
32[[folder:Anime & Manga]]
33* Manga creator Creator/GoNagai does this often with his various works, although ''Anime/MazingerZ'' and ''Anime/UFORoboGrendizer'' were already part of one continuity from Grendizer's get-go.
34** ''Anime/ShinMazinger'' is quickly reaching a critical level of this, with a woman from ''Violence Jack'' turning out to be [[spoiler: Kouji Kabuto's ''mother''.]]
35** ''Manga/ViolenceJack'' has incorporated ''Manga/{{Devilman}}'' and later ''Manga/DevilmanLady'' as taking place in one Universe [[spoiler:that resets itself and all main characters are really incarnations of Akira Fudou]]. And because the series is also DeconstructorFleet for all other Creator/GoNagai's manga, there are many theories incorporating them into it [[spoiler:in all incarnations, which is possible thanks to the nature of this world]]. Cameos and crossovers between his works are so often it's pretty easy. Then there's ''Manga/DevilmanGrimoire'', where Jun Fudo and Aoi Kurosaki from ''Devilman Lady'' are shown to be teachers at Akira and Miki's school. They are also lovers. Alphonse and Himura, from the 1970s ''Devilman'' anime series, also feature.
36* Gosho Aoyama's three main works ''Manga/CaseClosed'', ''Manga/MagicKaito'', and ''Manga/{{Yaiba}}!'', have the tendency to merge into one universe. ''Magic Kaito'' was more or less put on hold in favor of ''Case Closed'', but its characters occur so frequently in ''Case Closed'' to be the latter's recurring characters. Although, Aoyama also drew the line: ''Case Closed'' does not deal with ''Magic Kaito'' characters in their civvies.
37** Aoyama later [[FlipFlopOfGod tried to backtrack in at least one Q&A]] and claim that the Kaitou Kid who shows up every fifty chapters or so in ''Case Closed'' is a "parallel" version to the one in ''Magic Kaito''. Very few fans take him seriously on this (as both Kid and [[LegacyCharacter his predecessor]] have played distinct roles in ''Conan'''s MythArc), and ninety-nine percent of fanfiction (''e.g.'' [[https://archiveofourown.org/works/3128702/chapters/6780518 "When Pandora's Box Is Opened"]]) take the two 'verses being one for granted.
38* The ''Franchise/{{Gundam}}'' franchise started off with only the Universal Century timeline under the auspices of creator Creator/YoshiyukiTomino. When he stepped away from the franchise in 1993, Sunrise introduced the concept of {{Alternate Universe}}s to allow new creators to explore their vision of Gundam without creating a ContinuitySnarl, resulting in the [[Anime/MobileFighterGGundam Future Century]], [[Anime/MobileSuitGundamWing After Colony]], and [[Anime/AfterWarGundamX After War]] timelines. Then Tomino returned for the 20th anniversary and created ''Anime/TurnAGundam'', set in the Correct Century timeline, which was eventually revealed to be the DistantFinale of ''all'' of Gundam, including the [=AUs=], although this involves a lot of ContinuitySnarl regarding the timelines. Tomino's latest work, ''Anime/GundamReconguistaInG'', takes place in the Regild Century timeline, which is explicitly stated in-series as being the era that came after the end of the Universal Century. Additionally, the non-canon manga ''Gundam vs. Ideon: Counterattack of Gigantis'' reveals that the Universal Century timeline was the new universe created after the destruction of the previous universe at the end of ''Anime/SpaceRunawayIdeon'', another Tomino series.
39** The anime ''Anime/GundamBuildFighters'', also plays into this, which takes place in a TwentyMinutesIntoTheFuture setting where ''Gundam'' is a popular anime franchise. Presumably the same applies to ''Anime/ModelSuitGunplaBuildersBeginningG'', which is ''Build Fighters''[='=] [[SpiritualSuccessor spiritual precursor]].
40* The mangaka group Creator/{{CLAMP}} has been known for self-crossovers for many years, but their twin series ''Manga/TsubasaReservoirChronicle'' and ''Manga/XxxHolic'' are meant to tie all their works--both present-day and fantasy--into a single continuity.
41* ''Anime/PrettyCureAllStars.'' 14 magical girls from 4 different continuities save the day. Awesome.
42** The second All Stars-movie features 17 magical girls from 5 different continuities. From the previews it seems to feature some of the different baddies, too.
43*** ''All Stars DX 3'' ups the number to 21 from 6 continuities and the brand-new New Stage brings it to a grand total of 28 from 7. It overlaps with RememberTheNewGuy as a lot of Cures that show up in one movie weren't in the movie before that.
44*** ''All Stars New Stage'' delivers a {{Retcon}} of sorts now stating that 23 magical girls from 6 different continuities saved the day. Then 5 more from the 7th hopped in and it was madness.
45** Interestingly, it seems that ''Anime/SmilePrecure'' is attempting a bit of a Canon Weld experiment themselves - an episode midway through reveals that Yayoi's mother works for Fairy Drop, the store owned by [[Anime/HeartcatchPrettyCure Erika Kurumi's]] mother. And said mother is mentioned, at least by last name.
46* Eiichiro Oda re-used Ryuuma, a character from his one-shot manga ''Monsters'', as a (zombified) villain in ''Manga/OnePiece'' and his home country was mentioned to be part of the New World (the second half of the Grand Line). He later confirmed that ''Monsters'' was incorporated into the backstory of the setting, specifically in the country of Wano as a well-regarded legend and one of its most renowned swordsman. Additionally, he's the FamousAncestor of Zoro's {{Childhood Friend|s}} Kuina and her father Koushiro, [[spoiler:along with Zoro himself, referring to their similar appearance]].
47* ''Manga/NegimaMagisterNegiMagi'' reveals that all of Ken Akamatsu's major works exist in the same universe. The ties between Negima and ''Manga/LoveHina'' are obvious with Setsuna being a Shinmeiryuu swordswoman, which is lead by the Aoyama family from ''Love Hina''; the reference to ''Manga/AILoveYou'' is found in a single panel, although it's kinda important, as [[spoiler:the protagonist of that series is implied to have written the code that enables [[RobotGirl Chachamaru]] to have a soul]].
48* ''Franchise/DragonBall'':
49** Before he gave the world ''Manga/DragonBall'', Creator/AkiraToriyama's first popular series was a comedy called ''Manga/DoctorSlump'', about a robot girl and the slob scientist who created her causing havoc in a weird place called Penguin Village. About a year into the ''Dragon Ball'' series, Toriyama had Goku visit Penguin Village and meet most of the ''Slump'' cast, thus joining the two series into one universe. This was mostly done as an attempt to use ''Dr. Slump'''s popularity to help increase readership of ''Dragon Ball'', as it wasn't the huge hit it would eventually become yet. In contrast, the crossover has had the opposite effect in later years: many fans, especially outside of Japan, only know the ''Dr. Slump'' cast because of their guest spot on ''Dragon Ball''. It's gotten to the point that Arale's made it into at least three ''Dragon Ball'' video games as a playable character! ''VideoGame/DragonBallZBudokaiTenkaichi 3'', ''VideoGame/DragonBallOrigins'' and ''Revenge of King Piccolo'', to be precise. The first one also caused a good amount of rejoicing for those who knew her.
50** The Akira Toriyama manga ''Pola and Roid'', ''Tomato, Girl Detective'' and ''Wonder Island'' connect to ''Dr. Slump'' through cameos. The manga ''Dub and Peter 1'', ''Escape'', ''Go! Go! Ackman'', ''Manga/{{Kajika}}'', ''Manga/{{Kintoki}}'', ''Nekomajin''/''Nekomajin Z'', and ''Manga/SandLand'' might all take place in the ''Dragon Ball'' universe (Galactic Patrol of ''Manga/JacoTheGalacticPatrolman'', ''Jiya'' and ''Sachie-chan Guu!!'' fame is confirmed to take place due to its ending).
51** ''Anime/DragonBallSuper'' is an odd example, since while it's specifically meant to be a sequel to the original ''Dragon Ball'' manga rather than the anime, various anime-only {{Filler}} moments get directly referenced. Gregory, an anime-only character, is present, Android 18 gets pissed when 17 accidentally calls Marron "Maron", Krillin's girlfriend from the Garlic Jr. filler arc of ''Anime/DragonBallZ'', and Mr. Satan's anime-only deciples also appear. On the other hand, Gohan at one point talks to a group of bus hijackers he stopped in the manga, but not the anime, and various continuity errors, such as the different depictions of hell in the ''Z'' anime and ''Super'' exist if one tries to connect them directly.
52* Creator/LeijiMatsumoto is notorious for this, with ''Manga/GalaxyExpress999'', ''Anime/CaptainHarlock'', ''Manga/QueenMillennia'', and ''Anime/SpaceBattleshipYamato'' crossing over to various degrees, not always following a consistent continuity.
53* Endings of ''Manga/GetterRobo Armageddon'' and ''New Getter Robo'' [[spoiler:in which Armageddon versions of Ryoma, Hayato and Benkei and New version of Ryoma ends in WarriorHeaven, alongside countless Getters, fighting unknown monsters]] has hinted that all Getter's separated continuities (two mentioned above, Creator/KenIshikawa's manga continuity, ''Getter Robo DASH'' manga and anime ''Getter Robo Go'' and ''Shin Getter Robo Vs Neo Getter Robo'') might exist in the same Multiverse.
54* Madhouse Studios anime adaptations of four Creator/MarvelComics' titles - ComicBook/XMen, ComicBook/IronMan, ComicBook/{{Wolverine}} and ComicBook/{{Blade}} - are set in one Universe, confirmed both by WordOfGod from Marvel and the same Wolverine appearing in all four anime.
55* ''Anime/GaoGaiGarFINAL'' has blink-and-you'll-miss-it cameos of characters from ''Anime/{{Betterman}}'', establishing those two series takes place in one Universe.
56* ''Anime/{{REDLINE}}'' does this by making main characters from two different anime - Miki and Todoroki from ''Anime/MoleBrothers'' and Trava and Shinkai from ''Anime/TravaFirstPlanet'' - participating in the eponymous race.
57* Several years ago, Hidenori Kusaka and Satoshi Yamamoto worked on a short ''VideoGame/PokemonRanger'' manga that was only released online. As it turns out in the ''Platinum'' arc of ''Manga/PokemonAdventures'', the events that occured in that online comic are indeed canonical. The ''Ranger'' story was later included in an ''Adventures'' art book.
58* ''Anime/TimeBokan'':
59** ''Anime/YattermanNight'' has the cast encountering characters (or in some case, blatant {{Expies}}) from various other shows produced by Creator/TatsunokoProduction. One episode even has Galina and Alouette driving the [[Anime/SpeedRacer Mach 5]]!
60** This seems to be tradition for ''Anime/{{Yatterman}}'': the original and 2008 series crossed over with several Tatsunoko shows, and even placed them in a "Tatsunoko Kingdom" where ''all'' Tatsunoko characters appeared to reside in during one OVA.
61* Creator/MakotoShinkai's films ''Anime/TheGardenOfWords'', ''Anime/YourName'', and ''Anime/WeatheringWithYou'' have been confirmed to exist in the same timeline thanks to various character crossovers. [[Anime/TheGardenOfWords Yukari Yukino]] shows up as the English teacher at Itomori High School in ''Anime/YourName'' while [[Anime/YourName Taki, Mitsuha , Saya, Teshi, and Yotsuha]] have cameos in ''Anime/WeatheringWithYou''.
62* Eiji Ohtsuka has demonstrated that his horror manga ''Manga/MPDPsycho'' and ''Manga/TheKurosagiCorpseDeliveryService'' share a continuity thanks to the character Sasayama, who appears as a police officer in the former and as a social worker, at a later stage of his life, in the latter.
63* Before ''Literature/HighSchoolDXD'', Ishibumi wrote the first iteration of SLASHDØG which flopped and never went past the first volume. However, he did bring in Tobio Ikuse first as a CanonImmigrant in Volume 15 in 2013, a year later he went and rewrote SLASHDØG and properly placed it in the same universe as ''[=DxD=]'', bringing along Grauzauberer and Akeno's extended family and properly developed it into TheVerse by adding a character from his first and most obscure work, ''Denpachi''.
64* ''Manga/CityHunter: Shinjuku Private Eyes'' confirms that the series exists in the same universe as ''Manga/CatsEye'', with the three Kisugi sisters turning out to be the true owners of the cafe that Umibozu and Miki run.
65* Creator/TohruFujisawa, best known for ''Manga/GreatTeacherOnizuka'', confirmed several of his other series, ''Manga/KamenTeacher'' and ''Manga/AnimalJoe'', exist in the same universe as ''GTO'', with the main characters making cameos in ''GTO: Paradise Lost''. He also wrote a crossover between ''Kamen Teacher'' and ''Ino-Head Gargoyle'', a spinoff of ''GTO''.
66* The original ''Manga/GhostInTheShell'' and ''Manga/{{Appleseed}}'' mangas are said to be set in the same timeline but don't reference any of each other's characters or events. About the only thing they share is some of the {{Space Filling Empire}}s, notably that North America is now dominated by the DividedStatesOfAmerica after [[WorldWarWhatever several more world wars]].
67* ''Manga/AyakashiTriangle'' eventually established ''Yamato Gensouki'' (Creator/KentaroYabuki's first serialization) as events that occurred in the distant past, at least in BroadStrokes. A flashback uses the same design for [[HistoricalDomainCharacter Empress Iyo]], [[spoiler:who is Suzu and the ayakashi medium's earliest [[{{Reincarnation}} past life]]]]. It has elements of FullyAbsorbedFinale, partially resolving the plotline CutShort in ''Yamato Gensouki'': [[spoiler:Iyo's power came from being [[GodInHumanForm a human incarnation]] of the goddess Amaterasu. The Onmyoren, the story's villainous organization, failed to conquer Japan but still exists as the Gogyosen, [[EvilRunningGood who founded and have authority over]] [[CreatureHunterOrganization the Exorcist Ninja Association]].]]
68[[/folder]]
69
70[[folder:Comic Books]]
71* The UrExample of interconnected universes in comic books was Creator/ArchieComics, with their crossover story featuring the Shield and the Wizard, way back when they were still MLJ Comics. Both act as though they'd heard of the other before, establishing their stories as set in the same universe. It was also an early eample of a true comic book crossover, as it ran through the pages of both the Top Notch Comics and Pep Comics mags.
72* Creator/JackKirby is the TropeCodifier, merging details and elements of his stories to create a cohesive whole rather than simply "these characters hang out sometimes". Examples include his weaving the Celestials into the origins of the Eternals, Inhumans ''and'' the X-Men, and ComicBook/{{OMAC}} turning out to be ComicBook/{{Kamandi}}'s grandfather.
73** Occasionally, this was due to ExecutiveMeddling, though - one example being the ComicBook/NewGods, which he wanted to keep separate from the rest of DC Comics' stories to preserve the {{Kayfabe}} that it was set AfterTheEnd of his run on ComicBook/TheMightyThor. He got around it [[ComicBook/FinalCrisis at first]] by explaining that the New Gods lived in an AlternateUniverse, only acessible through boom tubes. Something similar happened to his other godly team for Marvel, ComicBook/TheEternals, whose stories clearly took place in a separate continuity at first, with later writers integrating the characters (most notably the Celestials) into the wider Marvel Universe.
74* Creator/DavidMichelinie did this in a subtle way in later issues of his ''ComicBook/StarHunters'' book, showing images of ''ComicBook/ClawTheUnconquered'' and ''ComicBook/Starfire1976'' ([[NamesTheSame no, not]] [[ComicBook/{{Starfire}} that one]], and not the ComicBook/{{Supergirl}} villainess either) as the {{Chosen One}}s of the same unknowable godly entities that the protagonist was now being made to serve. All three books were written by Michelinie during the DC Explosion, though we'll never know if he intended to do anything more complex with this welding, as the later DC ''Implosion'' [[CutShort cancelled them all]].
75* The [[Franchise/TheDCU DC]] and Franchise/{{Marvel|Universe}} universes were born from this trope; originally, the titles published by each company did not overlap, but over time, cameos, {{Crossover}}s, and inside references combined to form the comic books into one big, interconnected web. That's not even counting the Amalgam universe. Since ''DC vs. Marvel'' in 1996, it's revealed all crossovers were canonical -- [[MetaphoricallyTrue more or less]]. [[note]]The different universes and realities occasionally touch, causing them. Access' job is to make sure they don't stick. Sometimes he fails and some plot points end up persisting into either company's books, such as ComicBook/{{Trinity}} revealing what became of Krona's cosmic egg. [[/note]]
76** Marvel (rather, Timely) started welding their universe together in the wake Archie Comics' example, with a team-up between the Human Torch and Submariner, their biggest heroes at the time, followed by the establishing of a Justice Society-esque team named the All-Winners' Squad. However, the welding didn't take - the All-Winners vanished after just two adventures and for the longest time, most of their superhero catalogue would be consigned to LooseCanon status, with only a few worthies such as the aforementioned Namor and Torch, as well as Captain America, coming back. Their second try came with Spider-Man and the Fantastic Four, and with the success of these crossovers, plus the Avengers' formation, the Marvel Universe as we know it now was born.
77** DC upped the ante by creating an entire superhero team as the introduction to their new shared universe, the ComicBook/JusticeSocietyOfAmerica. To this day, it's generally accepted that the Justice Society is the first-ever example of a super hero team lasting longer than a single issue in comics history. They would also later apply a peculiar variant of this trope with the famous "Flash of Two Worlds" story where the new (at the time) Flash met the Golden Age Flash. It established that the old stories ''had'' happened, but were set in alternate universe, one that could still be visited and interacted with if one knew how. This was (temporarily) done away with after the Crisis, and now the Golden Age characters coexist with the newer ones, though usually they're older.
78** DC has also historically made a habit of assimilating the characters of other comics companies into their multiverse - Quality Comics (Uncle Sam and the ComicBook/{{Freedom Fighters|DCComics}}, ComicBook/PlasticMan, ComicBook/{{Blackhawk}}), Creator/FawcettComics ([[ComicBook/{{Shazam}} Shazam, Captain Marvel and the Marvel Family]]), Creator/CharltonComics (ComicBook/CaptainAtom, ComicBook/BlueBeetle, ComicBook/TheQuestion, ComicBook/{{Peacemaker}} and others), Creator/WildStorm (ComicBook/TheAuthority, [[ComicBook/WildCATSWildStorm WildC.A.T.s.]]), Creator/MilestoneComics (ComicBook/{{Icon}}, ComicBook/{{Hardware|1993}}, ComicBook/{{Static}}) and Creator/ArchieComics' Red Circle superhero characters. Generally, these characters start off in alternate universes, and then some sort of universal crisis reboots the DC Universe yet again, merging the universes. That said, sometimes the welding isn't permanent, as with the Red Circle characters, who eventually returned to Archie.
79*** ''ComicBook/{{Shazam}}'' and ''Kid Eternity'' are a particularly interesting example. DC acquired the rights to both from separate comic companies. Eventually, they realized that ''Shazam'''s Freddy Freeman and the [[NoNameGiven nameless]] Kid had remarkably similar back stories--both were [[RaisedByGrandparents raised by a grandfather]] who died in a boating accident caused by Nazis, which also resulted in the grandson getting superpowers activated [[ByThePowerOfGrayskull by saying a magic phrase]]. As a result, Freddy and "[[GivenNameReveal Kit Freeman]]" were revealed to be brothers.
80*** The ComicBook/{{FreedomFighters|DCComics}} are a double case of this, as not only were they initially given their own earth, Earth-X, but their very existence as a team counts as well - no such team as the Freedom Fighters existed back when they were published by Quality Comics. They were only brought together when DC purchased them all (with Plastic Man and Kid Eternity being exceptions, inhabiting other earths separately from the F.F.). DC considered doing something similar with the Charlton Comics catalogue (introducing the Blue Beetle of the brand-new Earth-4 in ComicBook/CrisisOnInfiniteEarths as a teaser), but when they saw what Creator/AlanMoore wanted to do with them, they [[ComicBook/{{Watchmen}} thought otherwise]].
81*** ComicBook/CrisisOnInfiniteEarths integrated the Fawcett, Charlton and Quality characters into DC's new single earth continuity (as well as several alternate-world characters like Kamandi), ComicBook/TheNew52 added the Creator/WildStorm, Creator/VertigoComics and Creator/MilestoneComics characters, and most recently, ComicBook/DCRebirth saw the inclusion of ''ComicBook/{{Watchmen}}'''s world into DC multiverse.
82** Interestingly, it's suggested that they are all interconnected through... ''WesternAnimation/XMenTheAnimatedSeries''. The final issue to the 1996 comic series ''X-Men Adventures'', which is set in that animated universe, revealed that universe was the universe that gave way to the main Marvel Universe (thus making Galactus a CanonImmigrant retroactively). Even more, the Living Tribunal is shown watching the creation of this world, temporarily holding back the brothers who would cause the aforementioned ''DC vs. Marvel'' event and even mentions needing to talk to his [[ComicBook/TheSpectre his hooded spectral counterpart]].
83* ''Creator/ImageComics'' is an interesting case.
84** Originally, all of its titles took place in a shared universe. Over time, the original Image partners focused on their own corners of the Image Universe, causing the continuity to split into several distinct sub-continuities. The ''Shattered Image'' crossover made the split official. But Image partners still occasionally "borrowed" each others' characters, so the sub-universes still interacted. As new, non-partner creators become more prominent in Image Comics, they started building universes of their own, and they occasionally used the Image partners' characters. For example:
85** Characters from Jay Faerber's creator-owned series (''ComicBook/NobleCauses'', ''Venture'', ''Firebirds'', and ''ComicBook/{{Dynamo5}}'') appear in each other's books all the time, creating a loose-knit "Faerberverse".
86** Robert Kirkman's characters occasionally cross over in a similar fashion (and sometimes become supporting cast - especially in ''ComicBook/{{Invincible}}''). The Kirkmanverse and Faerberverse intersect at a number of points, especially The Pact mini-series. Other Image characters, such as ComicBook/SavageDragon and ComicBook/{{Shadowhawk}}, often pop up. ComicBook/{{Spawn}} didn't make an appearance until ''Image United'', which brought together characters of all of the current Image partners (Erik Larsen, Rob Liefeld, Todd [=McFarlane=], Marc Silvestri, Robert Kirkman, and Jim Valentino), as well as Whilce Portacio and several other creators.
87** Angela from the ''ComicBook/{{Spawn}}'' universe jumped ship to the Franchise/MarvelUniverse at the close of ''ComicBook/AgeOfUltron''.
88* ComicBook/BatmanVsAliens was actually a sequel to an Aliens comic about a scientist team investigating an abandoned temple and getting killed and face-hugged for their trouble. The former comic established that said scientists were working for Wayne Enterprises. Later comics, such as ''Superman and Batman vs Aliens and Predator'', heavily imply that the continuity for these crossovers is preserved, welding, at the very least, the Superman and Batman ones into a single universe, if not the Green Lantern one.
89* Eclipse Comics' four-part crossover mini-series ''Total Eclipse'' brought together virtually all company-owned and creator-owned characters that the company published.
90* ''ComicBook/TwoThousandAD'':
91** The ''ComicBook/HarlemHeroes'' strip (about a basketball team with jetpacks in 2050) appeared to be totally unconnected to the 22nd centuy of the ''ComicBook/JudgeDredd'' universe until the son of one of the Heroes (John "Giant" Clay) joined the Judges (as Judge Giant).
92** The ''ComicBook/JudgeDredd'' story "Hammerstein" suggested ''ComicBook/ABCWarriors'' was also set in the past of the Dreddverse, but later ''ABC Warriors'' stories contradicted this.
93** ''Judge Dredd'' has also had crossovers with other ''2000 AD'' strips whenever the writers felt like it, most notably ''ComicBook/StrontiumDog'' and the story Helter Skelter (where Creator/GarthEnnis basically crossed ALL his favourite strips over with Dredd).
94** Meanwhile, ''2000 AD'' stalwart Pat Mills has crossed over ''everything he's ever written for 2000 AD'' with each other. ''Invasion!/ComicBook/{{Savage}}'', ''ComicBook/{{Flesh}}'', ''Ro-Busters'', ''ComicBook/ABCWarriors'', and ''ComicBook/NemesisTheWarlock'' all slot together.
95** Ian Edginton does the same thing with his ''2000 AD'' strips: both ''Stickleback'' and ''The Red Seas'' share a secret organisation, little mentions and character cameos abound, and the same brand of monster appears in ''Stickleback'', ''Ampney Crucis Investigates'', and ''Detonator X''.
96** Even more Edginton crossovers: Sir William Ashbless, [[spoiler:immortal]] designer of the titular ship in ''Leviathan'' made a cameo appearance in ''Stickleback'' and his shipping company, White Hart Line, got name dropped in ''Ampney Crucis Investigates.'' Also a few locations have been repeated across the various strips at different periods in history.
97** John Smith did a similar thing from the start in order to make his stories stand out: all his initial ''[[ComicBook/ThargsFutureShocks Future Shocks]]'' linked in to an organisation called Indigo Prime, and a couple of Indigo Prime agents also appeared in ''Tyranny Rex''. Indigo Prime then got its own series, and eventually crossed over with Smith's Creator/VertigoComics series, ''Scarab''.
98* WesternAnimation/{{Jabberjaw}}'s crossover with ComicBook/{{Aquaman}} stated that WesternAnimation/Sealab2020 did experiments on marine life with the intent of creating {{Uplifted Animal}}s, thus resulting in Jabberjaw and creatures like him populating the city of Aqualand in the year 2076[[note]][[ExtyYearsFromPublication 100 years after the debut of Jabberjaw's original cartoon]][[/note]]
99* Creator/AlanMoore:
100** He, as time has gone on, has turned ''ComicBook/TheLeagueOfExtraordinaryGentlemen'' into this, making vague references to the source material for ''Ozymandias'' and ''The Black Freighter''. Oh, sure, it's only references to the inspirations for them, and Moore would probably rather have his skin boiled than actually go further than that, but this is Creator/AlanMoore. ''There are no coincidences''. As an aside, Moore is a close friend to Moorcock, close enough that Moorcock has allowed Moore to put in some Moorcock characters into the ''League'' series free of charge.
101** Back in the day, Alan Moore sketched out a unified ''Warrior'' timeline, the most notable aspect of which was that, in an AlternateUniverse where [[ComicBook/{{Miracleman}} Micky Moran]] never regained his memories and powers, Emil Gargunza went on to build Fate, [[ComicBook/VForVendetta Norsefire]]'s supercomputer. The timeline also established when all the "centuries in the future" strips happened in relation to each other, and introduced the Chronarchs, who Moore calls "Earth-2 [[Series/DoctorWho Time Lords]]", and who seem to be based at least partly on his own version of Gallifrey in the ''Magazine/DoctorWhoMagazine'' comic strip. Then Moore quit ''Warrior'' and the book collapsed before any of this could actually appear.
102** Moore's ''ComicBook/{{Providence}}'' is an attempt to do this for all of Creator/HPLovecraft's stories, or at least the different cycles. Much like ''League of Extraordinary Gentlemen'', Moore is using Lovecraft's fiction to merge different stories and events into a single coherent verse. This includes "Cool Air", "The Horror at Red Hook", "Literature/TheShadowOverInnsmouth", "Literature/TheDunwichHorror", "Literature/TheColourOutOfSpace", "The Dreams in the Witch House", "Literature/TheThingOnTheDoorstep".
103* Creator/FrankMiller's Franchise/{{Batman}} stories: ''ComicBook/BatmanTheDarkKnightReturns,'' ''ComicBook/BatmanYearOne,'' ''ComicBook/TheDarkKnightStrikesAgain,'' and ''[[ComicBook/AllStarBatmanAndRobinTheBoyWonder All-Star Batman and Robin]]'' were originally supposed to be in separate universes, with only ''ComicBook/BatmanTheDarkKnightReturns'' and ''ComicBook/TheDarkKnightStrikesAgain'' having any clear continuity with each other.
104* [[http://www.bleedingcool.com/2009/10/01/the-mark-millar-tie-up-athon-spoilers/ This article]] suggests that all of Creator/MarkMillar's later Marvel works (''1985'', ''ComicBook/FantasticFour'', ''ComicBook/KickAss'', and ''ComicBook/OldManLogan'') is all interconnected. (Three of those are automatically canonical to each other anyway, of course, but ''Kick-Ass'' is more of a surprise.) Even earlier Millar established connections between three comics published by different companies - ''ComicBook/{{Wanted}}'', ''ComicBook/{{Chosen}}'' and ''ComicBook/TheUnfunnies''. The reason why at the end of ''Chosen'' [[spoiler:the media doesn't report the Antichrist's miracles is that they're controlled by supervillains from ''Wanted'']]. And Troy Hicks from ''Unfunnies'' [[spoiler:helped Satan rape the Antichrist]]. Never published ''Run!'' was supposed to be set in that world too.
105* Creator/GrantMorrison's ''ComicBook/AllStarSuperman'' and ''ComicBook/DCOneMillion'' seemed to be tied in the same continuity.
106** Of course, Creator/GrantMorrison is one of the architects of [[http://www.hyperborea.org/flash/hypertime.html Hypertime]] (the other being Creator/MarkWaid) which posits that it is all true. Under this concept, the events of ''DC vs. Marvel'' exist somewhere in continuity.
107** Almost all of Morrison's DC works are tied to each other, ''as well to the [[RealLife real world]]'', forming a big "Morrisonverse". Here's how it goes: In ''All-Star Superman'' Superman creates the infant universe Qwewq. In ''[[Franchise/JusticeLeagueOfAmerica JLA]]'' we see the heroes discover (a version of) Qwewq. Both in ''ASS'' and in ''JLA: Confidential'' we see that Qwewq actually contains "our" Earth, i.e. a realistic Earth with no superheroes. The final Morrison-penned issues of ''ComicBook/DoomPatrol'' and ''ComicBook/AnimalMan'' take place in a realistic world with no superheroes (and they both share the same colour scheme, meaning it's the same world in both), which is presumably Qwewq, i.e. "our" world. In ''ComicBook/SevenSoldiers'' we find out the ultimate fate of Qwewq (or at least one version of it). ''ComicBook/FinalCrisis'' (which takes place in the same universe as ''JLA'') refers to Bleed (the "sea" that separates different universes in the DC multiverse) as "ultramenstruum", and the same term is used is ''ComicBook/TheInvisibles'', implying that the Invisibles universe is a part of the larger DC multiverse. If we accept that Qwewq is "our" universe, this means our universe exists inside a larger universe populated by superheroes. Both ''ComicBook/FlexMentallo'' and ''ComicBook/TheFilth'' feature the "real" world to which superheroes from outside this world burst in; thus, the real world in both these comics could be (a version of) Qwewq. And then a huge chunk of the [[Franchise/{{Batman}} Damian Wayne]] stories written by Morrison that take place in the [[TwentyMinutesIntoTheFuture not too distant future]] were revealed to be set in the past of ComicBook/DCOneMillion and ends with Damian training Terry [=McGinnis=] from WesternAnimation/BatmanBeyond to become his successor. Lastly it also seems that DC One Million takes place in the future of All Star Superman as Solaris and Kal Kent appear and happens to be the story of how Superman ended up having to fix the sun. To sum it up, almost all of Morrison's major works for DC are welded together, though admittedly some of the links between them are vague.
108* When Semic Comics, a French comic publisher, decided to revive the characters it inherited from defunct ''Editions Lug'', editor Jean-Marc Lofficier set out to link over 2000 largely unrelated characters from just about every comic book genre into a single continuity. Some characters had to be revamped fairly drastically to fit in, and a few had to be revamped to avoid duplication.
109* In ''ComicStrip/NonSequitur'', Wiley frequently used four separate sets of recurring, originally nameless, characters: a silent {{Everyman}} who'd observe some of the comics' less absurdist strips, a ''VideoGame/LeisureSuitLarry''-ish barfly, a snarky BrattyHalfPint girl and the Sunday-only diner owner "Offshore" Flo (and her tall-tale telling patron, Eddie). Gradually, the characters started interacting: the Everyman and the barfly were seen hanging out at the bar, the girl and Flo would occasionally be seen reacting to something from the Everyman's radio talk show. Eventually, Wiley brought all these elements together to form a central core: Joe (the everyman) and Bob (the barfly) are brothers, Danae (the little girl) and her little sister are Joe's daughters and Flo is Joe and Bob's mother. Eddie remains "just" Eddie.
110* In one Super Special ''ComicBook/SonicTheHedgehogArchieComics'', Sonic finds himself universe hopping to the ''WesternAnimation/SonicUnderground'' universe. In the 25 Years Later storyline, he names his children after his counterpart's siblings.
111** In the same Super Special, Sonic and Sally end up universe hopping again and teaming up with ComicBook/SabrinaTheTeenageWitch, making the ''Sonic'' comics part of the Archie Comics multiverse, not just under their label.
112** In another, the Freedom Fighters universe hop into the Image Comics universe, meeting Spawn, Savage Dragon, the Maxx, and Shadow Hawk.
113** [[ComicBook/SonicTheHedgehogMegaManWorldsCollide The Mega Man comic started being welded into the Sonic comic canon as well.]]
114* ''ComicBook/{{Asterix}}'': The villain of ''Recap/AsterixAndTheMagicCarpet'' briefly refers to his cousin ComicBook/{{Iznogoud}}.
115* One issue of ''ComicBook/PS238'' reveals that it and ''ComicStrip/{{Nodwick}}'' are set in the same world, though taking place in different "Heroic Ages".
116* 2017's ''The Scream and ComicBook/{{Misty}} Special'' did this in a couple of strips. Maxine in ''The Return of Black Max'' passes by the Sentinels from ''The Return of the Sentinels'', and the title character of ''Death-Man'' encounters aged versions of classic Fleetway characters Leopard from Lime Steet, Pete's Pocket Army, Deathwish, Steel Commando, Paddy [=McGinty's=] Goat, Doctor von Hoffman, the Iron Major, and The Dwarf, as well as the [[LegacyCharacter successors]] of Doctor Sin and Thunderbolt the Avenger.
117* This is the crux of the plot for ''ComicBook/RoboCopVersusTheTerminator'': the technology that turned Alex Murphy into Franchise/RoboCop leads to Skynet gaining sentience and the creation of the Franchise/{{Terminator}}s.
118* ''ComicBook/StreetFighterVsDarkstalkers'' establishes that the cast of both series shares the same continuity. For instance, [[AnIcePerson Kolin]] is revealed to have gained her powers after slaying an ice werewolf.
119* Creator/GarthEnnis' characters seem to coexist in a single unified verse, with characters from ''ComicBook/Hitman1993'' being referenced in ''ComicBook/ThePunisherMAX'' or Cassidy from ''ComicBook/{{Preacher}}'' showing up in ''ComicBook/TheBoys''.
120** His run on ''ComicBook/ThePunisher'' can be divided into two 'verses: the Marvel Knights one set after the "Angel Punisher" AudienceAlienatingEra where superheroes exist and regularly get in Frank's way, and the MAX universe that's basically [[CrapsackWorld our world but crappier]] (superheroes don't seem to exist and ComicBook/NickFury is an operative who started in WW 2 with no explanation for why he never ages). However, characters from the first verse (Jen Cooke, Yorkie Mitchell and the Russian) made appearances in the MAX continuity.
121* Creator/IDWPublishing's ''ComicBook/{{Gobots}}'' miniseries ends with heavy implications that the [=GoBots=] are actually precursors to ''Franchise/{{Transformers}}''. In particular, Road Ranger talks of creating an heir who is an "optimized" version of himself and encourages Bug Bite to do the same, which implies that they are the creators of Optimus Prime and Bumblebee. The two also decide to recycle Leader-1 and Cy-Kill's remains to create a new [=GoBot=], who is seen undergoing construction in the form of a jet plane similar to the alt mode of the Decepticon Starscream.
122* ''ComicBook/RadiantBlack'' launched in 2021 as its own title that occasionally had its lead characters, who are comic book fans, make reference to ''C.O.W.L.'', another comic by Kyle Higgins. However, it was made clear that other superpowered beings did not exist in the universe, as the characters have nobody for guidance in relation to their powers. Later on, ''ComicBook/{{Supermassive}}'' officially launched the universe, the ComicBook/MassiveVerse, introducing characters Rogue Sun and Inferno Girl Red. Despite this being its official launch, the events of ''C.O.W.L.'' were retroactively incorporated into the universe as well.
123[[/folder]]
124
125[[folder:Fan Works]]
126%%* ''Fanfic/DigimonTrinity'' is a WhatIf that treats ''Anime/DigimonTamers'' as a sequel to ''Anime/DigimonAdventure'' and ''Anime/DigimonAdventure02'' rather than a ContinuityReboot, and thus, several examples of this exist:
127%%** Kari is the teacher of Takato's class, rather than Nami Asaji.
128%%** Yolei and TK, now under his true name of Takeru, have replaced Yamaki and Riley as agents of Hypnos.
129%%** Sora and Matt are friends of Rika's family, due to Sora's fashion designer job and Rumiko's modeling.
130%%* ''Fanfic/DigimonChildrenOfTime'' combines the events of all six ''Digimon'' anime ((''Anime/DigimonAdventure'', ''Anime/DigimonAdventure02'', ''Anime/DigimonTamers'', ''Anime/DigimonFrontier'', ''Anime/DigimonDataSquad'', and ''Anime/DigimonFusion'') into one coherent continuity.
131%%* The ''Final Fantasy RPG'' collaborative UsefulNotes/{{Roleplaying}} group combined ''VideoGame/FinalFantasyI'', ''VideoGame/FinalFantasyIV'', and ''VideoGame/FinalFantasyVI'' into one world, with characters crossing over from ''VideoGame/FinalFantasyV''. The NURPG spinoff was set on an alternate world version of ''VideoGame/ChronoTrigger'', and had characters cross over from ''VideoGame/FinalFantasyVII'' and all sorts of different media. A third spinoff was based on ''VideoGame/MegaManClassic''. This resulted in creating a fanon [[TheMultiverse multiverse]].
132%%* ''Fanfic/NeitherABirdNorAPlaneItsDeku'' mashes together ''Manga/MyHeroAcademia'' with ''Franchise/DCComics'' and elements of the ''Series/{{Arrowverse}}''.
133%%** Izuku Midoriya is Kal-El and is thus destined to become ComicBook/{{Superman}}.
134%%** Aliens aren't welcome on Earth after [[GreatOffscreenWar the Lantern War]], which led to the killing or ousting of numerous alien superheroes like Starfire and Martian Manhunter.
135%%** Several Quirk users in My Hero Academia are reimagined as metahumans or magic users. For instance, Fumikage Tokoyami's Quirk, Dark Shadow, is a magic [[OurGeniesAreDifferent fifth-dimensional genie]].
136%%** Harrison Wells [[SparedByTheAdaptation is alive]] and a recurring ally of the Flash Family.
137%%** There is no Justice League, only the Justice Society of America (founded by ComicBook/{{Batman}}, ComicBook/WonderWoman, ComicBook/{{Aquaman}}, [[Characters/GreenLantern1941 the Green Lantern]], Franchise/TheFlash, ComicBook/MartianManhunter, and ComicBook/DoctorFate with the blessing of UsefulNotes/FranklinDelanoRoosevelt) prior to its dissolution. Since then, there have been no major, long-term superhero teams.
138%%* ''ComicBook/{{Supergirl}}'' fanfic ''Fanfic/HellsisterTrilogy'' combines several separate and unrelated stories to flesh Satan Girl’s backstory out: Red Kryptonite making Supergirl grow a second head in ''ComicBook/ActionComics'' #283, the birth of Satan Girl in ''Adventure Comics'' #313 and the appearance of ''[[ComicBook/DemonSpawn Nightflame]]'' in ''Adventure Comics'' #421.
139%%-->She had been manifest two other times, in different guises. Once, Supergirl had been given a contentious second head by Red Kryptonite. That was her first known instance of consciousness. She had been bitchy then, but not evil. Not yet refined enough for that.\
140%%The second time had been her first outing as Satan Girl, and it had almost worked. Except for that stupid group of animals, it would have. Kara and the Legion bitches would have been dead, and she would have been extant from that time to this. She was evil then, but she hadn't really killed anyone.\
141%%The third time, she was manifest as Nightflame, a giant sword-wielding woman who wreaked havoc in San Francisco, born of her old identity and some other elements added from Kara's psyche, amplified by a mage who existed in a sub-atomic universe on a world somehow within Kara. Even she was confused by that one, and didn't comprehend it all. She supposed that the sword and magic came from those Moorcock novels that Kara had run through once. That time, she had very nearly taken over Kara's body. Only the girl's undeniably strong will, and some psychic help from her friend Geoff, had withstood her. So she had gone back into nonexistence.
142* ''Fanfic/ASongOfSilkAndSaplings'':
143** Bugaria's ants [[spoiler:were originally native to Deepnest, and migrated to the surface to escape the Infection]]. This serves to explain both why the ants' past before Elizant I founded the kingdom is so mysterious and why [[spoiler:the ant queens' masks look so much like Hallownest masks -- because they are]].
144** Similarly, Bugaria's moths [[spoiler:descend from the survivors of Hallownest's Moth tribe, who fled to the surface in earlier times to escape from persecution under the Pale King's reign]].
145%%* ''Film/StarTrekNemesis'' actually ''{{Jossed}}'' several elements of Creator/DianeDuane's earlier ''Literature/{{Rihannsu}}'' novels, and ''Fanfic/EmaelMosekhesailho'' spends some time welding them back together, among other things making ''Nemesis'' character Senator Tal'Aura a member of Kaveth Ship-Clan.
146%%** Generally speaking, many ''Star Trek'' fans do the same in their own stories, as the ''Literature/{{Rihannsu}}'' version of the Romulans is generally considered better than the canonical version. Even ''VideoGame/StarTrekOnline'' (that, as you know, is an official production) does it to some degree.
147%%* ''Fanfic/SoulEaterTroubledSouls'': Both ''Manga/SoulEater'' and its spinoff ''Manga/SoulEaterNot'' are featured prominently in this story. Similar canon-welding occurs with the anime and manga of each source material.
148* ''Fanfic/HauntedMansionAndTheHatboxGhost'': The fanverse includes several properties (fanmade and official alike) welded together into a single continuity, even when no continuity was intended from the authors.
149* ''Fanfic/HoursVerse'':
150** Wakaba Isshiki brings up [[VideoGame/Persona1 SEBEC and their experiments]] when describing her research to Mitsuru and Kei, and believes that Maki's world and [[VideoGame/Persona4 Magatsu-Inaba]] may have been proto-[[VideoGame/Persona5 Palaces]].
151** [[VideoGame/Persona2 Tatsuya Suou]] was the previous [[VideoGame/Persona5 Trickster]] before Akira, explaining many of the similarities between what Akira [[spoiler: and Akechi]] went through and what Tatsuya [[spoiler: and Jun]] went through. At Philemon's request, he passes on the Misericorde, his ReforgedBlade, to Akira.
152** [[VideoGame/PersonaQ2NewCinemaLabyrinth Hikari]] [[NamedByTheAdaptation Tamura]] is one of the [[VideoGame/Persona5Strikers Monarchs]] encountered during the events of ''Patchwork Hearts'', having an OriginalGeneration Jail that brings half the Thieves to Sumaru City.
153** ''Stars Shine Brighter without Sunlight'' reveals [[spoiler:Nyarlathotep is responsible for orchestrating [[VideoGame/Persona5 Maruki's possession by Azathoth]] in order to draw Tatsuya out of the Other Side with the ultimate goal of overrunning it with Shadows and finishing [[VideoGame/Persona2 what he started in 1999]].]]
154%%* ''Fanfic/GuardiansWizardsAndKungFuFighters'' has a bit of this going on, as a result of the universes of ''WesternAnimation/JackieChanAdventures'' and ''WesternAnimation/{{WITCH}}'' being [[MergedReality merged together]]:
155%%** A Heart of Earth gave [[TheChosenOne Ben Shui's spirit]] its reincarnation cycle.
156%%** Tarakudo and his Generals once invaded Meridian, but were sealed away by its Heart and ancient heroes.
157%%** Daolon Wong is now in the service of Prince Phobos.
158%%** Theodore Riddle, an enemy of the Guardians from the [[ComicBook/{{WITCH}} comics]], is one of the leaders of the Dark Hand.
159%%* ''Fanfic/PokemonStorySinnohJourney'':
160%%** Takes place in the anime-verse, but the narration references Sinnoh's Route 205, a game-verse concept.
161%%** Furthermore, Aaron’s hometown of Metropolis Town is said to be in Orre. Marian and later May are well aware of the region despite being anime characters.
162* ''Fanfic/InfinityTrainStarFinder'': {{Subverted|Trope}}. The events of ''Fanfic/InfinityTrainBlossomingTrail'' still happened on this continuity, but with many changes and into a BroadStrokes fashion. Chloe became the unown wielder and boarded the train after the mess she caused, but she kicked the bucket during a mission with her partner Kirby.
163%%* ''Fanfic/InnocenceAndExperience'' blends DC's Post-Crisis continuity with the events of ''WesternAnimation/YoungJustice2010'' to get its time travel-crossover story, in which Damian is inadvertently sent back in time to meet the Team just after the events of New Years Eve. The fact that Dick is unaware of the fact that he would eventually pass the mantle of Robin over to Damian is the primary source of friction in the comic.
164%%* The ''Fanfic/EarthsAlienHistory'' timeline has multiple examples, courtesy of mixing numerous franchises and making them work as a singular setting:
165%%** The [[Franchise/MassEffect Reapers]] destroyed the {{Precursors}} of both the [[Webcomic/DriveDaveKellett Vinn]] and the [[Literature/{{Footfall}} Fithp]], as well as the original homeworld of the [[Film/IndependenceDay Harvesters]] (thus rendering them nomadic).
166%%** The ComicBook/IronMan armor is based off of that used by [[Franchise/{{Metroid}} Samus Aran]].
167%%** Series/{{Torchwood}} is in the place of [[Franchise/StarTrek Section 31]]. And it turns out that the alien attack on Queen Victoria that led to their formation in this universe was by the [[Series/StargateSG1 Goa'uld Osiris]].
168%%** Mars is home to multiple species, including the [[Literature/TheWarOfTheWorlds1898 Mollusks]], the various [[Literature/JohnCarterOfMars Barsoomians]], the [[Creator/DCComics Whites and Greens]], and the [[Series/DoctorWho Ice Warriors and Osirians]].
169%%** The technology of the [[Film/PacificRim Jaegers]] is based on that of [[WesternAnimation/SymBionicTitan Galalunan]] battle armors; later developments lead to the creation of Franchise/{{Gundam}}s. Also, genetic links are found between the Kaiju and the creatures of Mutraad, though the truth of this is never fully established.
170%%** General Modula's coup on Galaluna is in this universe backed by [[ComicStrip/DanDare the Mekon]], who does so to [[FalseFlagOperation frame the Salarians]] for it, both to directly deny [[TheAlliance TeTO]] another potential ally and to taint their relationship with the Citadel.
171%%** Mankind's first Warp flight, which attracts the attention of the Vulcans, is here the ''Commodore Perry'', on its way to the [[Literature/WorldWar Race's Home]].
172%%** The H'urq, who invaded Q'onos in the Klingons' ancient past, were actually Collectors.
173%%** The [[VideoGame/{{Turok}} Lazarus Concordance]] are renegade Time Lords.
174%%** [[Film/StarTrekIITheWrathOfKhan The Genesis Project]] is inspired by the [[Series/{{Defiance}} Votans']] own terraforming technology.
175%%** The powers of ComicBook/BlackCanary are actually inherited from [[Series/PowerRangersDinoThunder Kira Ford]].
176%%** The [[Series/Supergirl2015 DEO]] combines aspects of its canon form with [[Series/DoctorWho UNIT]] and [[Franchise/MarvelCinematicUniverse SHIELD]].
177%%** The [[Literature/TheSagaOfSevenSuns Klikiss]] apparently based their PortalNetwork on the Stargates.
178%%** [[Series/StarTrekDiscovery Philippa Georgiou]] grew up in Race territories on Earth, and becomes part of their military.
179%%** [[Film/BlackPanther2018 Vibranium]] and [[Series/PowerRangersNinjaSteel Ninja Steel]] are the same substance.
180%%** The events of ''Literature/{{Animorphs}}'' appears to be happening on [[WebAnimation/{{RWBY}} Remnant]] instead of one Earth.
181%%** [[Series/TokumeiSentaiGobusters Enetron]] is actually a mispronunciation of [[Franchise/TheTransformers Energon]].
182%%** For that matter, the Transformers plots used in this story take elements from various sources, including ''[[Anime/TransformersArmada Armada]]'', ''[[Anime/TransformersEnergon Energon]]'', ''WesternAnimation/BeastWars'', and the [[ComicBook/TheTransformersIDW IDW comics]].
183%%** The Demon World dimension from ''Franchise/DragonBall'' is stated to be the home of demonic entities from various other franchises.
184* ''Fanfic/MaroonedInMadagascar'': {{Subverted|Trope}}. The movies, ''WesternAnimation/ThePenguinsOfMadagascar'' and ''WesternAnimation/AllHailKingJulien'' are shown to be in the same universe but represent alternate timelines, with the latter being the most disconnected from the rest, as this King Julien has no intentions of abandoning his kingdom and is gobsmacked that any version of himself would do it. ''WesternAnimation/ThePenguinsOfMadagascar'' is shown to be canon with the first two movies, but it and the [[WesternAnimation/Madagascar3EuropesMostWanted third one]] represent branching timelines, where in the former, Julien, Maurice, and Mort sailed to New York on their own, while in the latter, they joined the Zoosters on their trip to Europe.
185* "[[https://www.fanfiction.net/s/4551598/1/Of-Powers-and-Pie Of Powers and Pie]]" combines ''Series/PushingDaisies'' with ''Series/{{Heroes}}'' by making Ned’s ability one of the many superpowers manifested in the show; later in the fic, [[spoiler:Ned learns that he can use his ability to also heal the injured, healing Elle of serious injuries when she’s crushed by a collapsed ceiling and mending Mohinder’s broken leg]]. As well as Ned, [[spoiler:Olive realises that she can create force-fields when she is attacked by Sylar before Peter Petrelli saves her]].
186%%* ''Fanfic/TheMelindaChronicles'': In addition to introducing [[Franchise/{{Highlander}} immortals]] to the [[Franchise/SonicTheHedgehog Sonicverse]], the fic wields elements from EU sources like [[WesternAnimation/SonicTheHedgehogSatAM SatAM]]/[[ComicBook/SonicTheHedgehogArchieComics Archie Sonic]] into the game universe, with things like Kai explicitly being Wolfpack Nation in cultural origin. Elements of the Highlander universe aside from immortals existing are also present with Melinda mentioning Duncan and Connor by name and alluding to Methos.
187* ''Fanfic/SpiderNinja'' specifically states that it's story takes place in a part of the Spider-Verse where a [[GenderFlip Gender Flipped]] Peter Parker was adopted by Master Splinter after her birth family was killed. As such, the story does this trope to both franchises and the Marvel universe.
188** The story welds together the 2003 series (using the same locations and characterizations) and the 1987 series (Splinter is the mutated Hamato Yoshi and April is a reporter).
189** [[spoiler:The Kraang were [[DeathByAdaptation killed off]] when they were caught in the crossfire of a major battle between the Skrulls and the Kree before the Turtles were even born.]]
190** The Foot Clan attempted to form an alliance with the remaining members of HYDRA, but Tony Stark discovered the infiltration long before they could take over and HYDRA was shut down for good.
191** [[spoiler:Doctor Octopus]] was briefly allied with the Foot Clan.
192** [[spoiler:Bebop and Rocksteady]] work for Norman Osborn (as he and Miles Warren were the ones to give them their respective powers.)
193** Leatherhead is [[spoiler:the mutated Doctor Connors]].
194** Dr. Curt Connors went to college with [[spoiler:Doctors Baxter Stockman and Otto Octavius]].
195** TCRI is a subsidiary of [=OsCorp=].
196* ''Fanfic/IceFury'' specifically states that the events of this crossover were set in motion when Elsa's eternal winter caused the events of the ''WesternAnimation/DragonsRidersOfBerk'' episode "Frozen" (when Berk experienced such an intense winter that the ocean froze and they were attacked by the grounded Speed Stingers). When Elsa meets [[spoiler:Valka]], it is explained that the archipelago where Berk and the other depicted islands exists is isolated from the wider world, justifying the continued existence of Vikings when ''Frozen'' was implied to be set in the 1800s.
197* ''Fanfic/TheSlayerProphecy'' has a few of these, mostly explaining how the Buffy cast can be part of the wider DC Universe and still have spent so long acting alone;
198** It is explicitly stated that the Hellmouth deflects external interest, which is why none of the major superheroes of the DC Universe have visited the city before.
199** Rack apparently fought Doctor Fate in the past before Rack and Fate disappeared from the public view.
200** Spike observes that Dala and the Monk were members of the Order of Aurelius, with the Monk just a little bit younger than the Master was at the time of his death.
201* In ''Fanfic/HarryPotterAndTheMysticForce'', it is established that ''Harry Potter'' and ''Power Rangers'' exist in the same universe (and in a reality where [[spoiler:the Rangers battled Ivan Ooze]] as well as apparently all other televised continuity still being valid); no reference is made to other Hogwarts students being aware of past Rangers, but this can be attributed to the wizarding world’s stereotypical ignorance of muggle activities.
202* In ''Fanfic/TaraSheppard'', after Tara [=McClay=] meets her half-brother John Sheppard and learns about his work with the SGC, [[spoiler:after analysis of Tara's DNA provides the means for the Asgard to cure their genetic degradation]], Thor provides a full history of how demons fit into what the SGC know of Earth’s history.
203* Creator/{{Finmonster}}'s ''Fanfic/TheMarvelousWorldOfDC'' and its sequel, ''Fanfic/HarryPotterAndTheGuardiansLight'' has an abundance of this;
204** Krypton is destroyed by Galactus, and Kal-El's landing is investigated by the Men In Black (to the point that Agents D and K are regarded by Clark as uncles, though moreso D than K).
205** Thor is sent to Earth to be raised in an amnesic state on Themyscira, which hides his true heritage until the time is right, to the extent that he considers Diana his sister as a child. That said, [[NotBloodSiblings it is implied that Diana think of him as more than that]].
206** Hellboy comes to Earth on the same night that Captain America 'dies', and it is later established that his father is Trigon the Terrible (with Raven, his half-sister, being raised as his daughter when she is born a few decades later).
207** The BPRD now includes Zatanna, John Constantine, Jason Blood/Etrigan, Detective Chimp, and Stanley Ipkiss/The Mask (the Mask itself being a creation of Thor's brother Loki). In later books, they are joined by FrankensteinsMonster(the DC version from ''ComicBook/{{Seven Soldiers of Victory|2005}}'') and Jack Russell, the ComicBook/WerewolfByNight.
208** The Nova Corps are basically a 'spin-off' of the Green Lantern Corps (Sinestro compared them to second-stringers, but considering his nature anything he says must be taken with a grain of salt).
209** The Ghost Rider is now an agent of the Spectre (who [[NoodleIncident went mad]] at some point prior to the series, and started persecuting magic-users, which is why the Statute of Secrecy was put in place).
210** The Sentinels of Magic include Albus Dumbledore, Doctor Fate, Doctor Strange, Madame Xanadu, the Enchantress, Shazam, and Agatha Harkness.
211** Peter Parker, Jimmy Olsen, Garfield Logan, Virgil Hawkins, Johnny Storm and Victor Stone were all at high school together before most of them received their powers (or had to get their 'powers' in Vic's case) in the same accident (caused by [[ComicBook/TheJoker Jack Napier ]], Eel O'Brian, and Flint Marko under the orders of ComicBook/LexLuthor and ComicBook/TheKingpin, while the Fantastic Four, the Hulk, ComicBook/DoctorDoom, ComicBook/CaptainAtom and Firestorm were created in another event orchestrated by UsefulNotes/RasputinTheMadMonk.
212** Raven and Wanda Maximoff attend Hogwarts with Harry (and Constantine and Zatanna are also Hogwarts alumni).
213* ''Fanfic/InfinityCrisis'' does this a ''lot'', especially since the original story had expanded into a full-on {{MassiveMultiplayerCrossover}}:
214** The events of both ''Series/BlackLightning2018'' and ''Series/Lucifer2016'' are established to have happened on Earth-1 (the Arrowverse). Ironically, Black Lightning ''would'' end up being incorporated into the Arrowverse, but not as part of Earth-1[[note]]until ''Series/CrisisOnInfiniteEarths2019'', and that series also established ''Lucifer'' was set on Earth-666.[[/note]]
215** ''New Charges'', set on Earth-1, has Black Lightning becoming a mentor to both [[Characters/MarvelComicsMilesMorales Miles Morales]] and WesternAnimation/StaticShock.
216** In ''Gamma Relations'', set on Earth-199999 (The Marvel Cinematic Universe), a version of the X-Men is introduced based on the Film/XMenFilmSeries.
217*** Future stories would establish that the events of the ''{{Franchise/Indiana Jones}}'' films, ''[[Film/TheRocketeer The Rocketeer]]'', and ''{{Film/Starman}}'' all happened on Earth-199999 as well.
218** ''Counterpart Conferences'' has ''WesternAnimation/HeManAndTheMastersOfTheUniverse'' crossed with ''WesternAnimation/{{ThunderCats|1985}}''.
219** ''Of Kryptonians and Queens'' reveals Lena Luthor is actually Morgan Le Fey from ''Series/Merlin2008''.
220** Later, the Joker and Ra's al Ghul from the ''Franchise/DCAnimatedUniverse'' arrive on the Franchise/DCExtendedUniverse Earth.
221** Earth-1993 is home to the Franchise/PowerRangers.
222** Earth-21 is the world of ''Series/{{Smallville}}''
223** ''In Hand and Foot'' shows aspects of Franchise/TeenageMutantNinjaTurtles merging parts of the original comic and the 1980s cartoon series.
224** ''Tomorrow's Guardians'' shows the future of ''Series/TheOrville'' is one of several possible futures for Earth-1.
225** ''Counterpart Conferences'' also brings in ''Series/DoctorWho''.
226** Earth-1984 merges together ''WesternAnimation/GIJoeARealAmericanHero'' and ''WesternAnimation/TheTransformers''.
227%%* ''FanFic/TheBridge'' features the kaiju hailing from the "Amalgam Universe", which is essentially a combination of different {{Kaiju}} properties built around the Heisei Godzilla timeline.
228%%** ''Film/RebirthOfMothra'' takes place one year after ''Film/GodzillaVsDestoroyah'' with the older mothra being the same one who [[Film/GodzillaAndMothraTheBattleForEarth fought Godzilla "Senior"]] years prior, with the sequel following after.
229%%** Godzilla Junior, now all grown up, fills the role of the first two Millennium movie incarnations, albeit in a heroic fashion akin to the late Showa era.
230%%** ''Film/GameraGuardianOfTheUniverse'' happens in the 2000s between Godzilla movies with Gamera being created by the same civilization that made Anguirus, Baragon, and Varan.
231%%** Monster X's origin is tied into Grand King Ghidorah from the third "Rebirth" movie.
232%%** Though Godzilla Junior interrupts "K-Day" by engaging and killing "Trespasser" , but the governments decide to dust off the old Heisei mecha schematics and create the [[Film/PacificRim Jaeger Program]].
233%%* ''Fanfic/TheWesterosi'': [[spoiler: [[Literature/ASongOfIceAndFire The Others]] are combined with the [[VideoGame/{{Stellaris}} Unbidden]].]]
234%%* In various works, Creator/AAPessimal brings together elements of the different universes of Creator/TerryPratchett, and suggests how they could be related. ''Literature/GoodOmens'' overlaps the ''Literature/{{Discworld}}'' in several tales[[note]]The various Persons of the Apocalypse/Apocralypse are seen to get together across the world divide, for instance. Elsewhere, Aziraphile and Crowley are shown the reality of the "in my Father's house are many mansions" parable, by Jesus Christ Himself - this involves an excursion to the Discworld.[[/note]] Elsewhere, the Blackbury of the ''Literature/JohnnyMaxwell'' series is seen to have a direct link to the Discworld, through the agency of time-and-space travelling bag lady Mrs Tachyon. This sets up a lot of bother in ''Fanfic/SlippingBetweenWorlds''.
235%%* ''Fanfic/VanishingAct'' ties together the worlds of ''Franchise/{{Persona}}'' and ''Manga/JoJosBizarreAdventure''. This leads to such developments as [[VideoGame/Persona3 Aigis]] being based off the technology used to create [[Manga/JojosBizarreAdventureBattleTendency Stroheim's cyborg body]], [[VideoGame/Persona5 Hifumi Togo]] [[spoiler:being a Stand user whose ability makes her a natural shogi champion]], and the main thrust of the fic, [[Manga/JojosBizarreAdventureDiamondIsUnbreakable Shizuka Joestar]] becoming a PhantomThief.
236* It happens often in Fanfic/MaribatAU fics, considering the nature of the stories:
237** Some stories take advantage of the fact that one of the previous holders of the [[WesternAnimation/MiraculousLadybug Ladybug Miraculous]] was Hippolyta in order to introduce ''Franchise/WonderWoman'' into the story.
238** [[Franchise/{{Batman}} Alfred]] is often made a former Peacock Miraculous holder before it was mysteriously lost, a distant relative/family friend of the Dupain-Chengs, or both.
239** There are a few fics where Marinette and Jason Todd met before Jason becomes Red Hood and Marinette becomes Ladybug which is used as another way to establish their sibling bond.
240* ''Fanfic/ChildOfTheStorm'' is a [[MassiveMultiplayerCrossover Mega Crossover]], and the author created a ''completely different canon'' by combining all the source material canons together.
241** The magic system is a mixture, with 'Wanded' (''Literature/HarryPotter'') and 'Wandless' (''Literature/TheDresdenFiles'') wizards. The differences are explained by a different relationship to the same magic - Wanded magic is BoringButPractical, easy to master, more precise, with millennia of perfected spells to learn, and practitioners are buffered from more dangerous energies by use of wands. Wandless magic is DifficultButAwesome, being harder to master and more vulnerable to SanitySlippage via accidental BlackMagic, but granting double the lifespan, a deeper connection to magical energy, no need for wands, and a more personalised approach to magic. It's treated like being left or right handed - some people are magically ambidextrous, and the difference can be overcome with training.
242** The ''Franchise/MarvelCinematicUniverse'' is followed up to ''Film/{{The Avengers|2012}}'' (not including movies prequels), but the events of ''Film/CaptainAmericaTheFirstAvenger'' are combined with his [[ComicBook/CaptainAmerica comic book adventures]] and his brief cameo in ''WesternAnimation/XMenEvolution'', on top of a period spent in Hogwarts mid-war when dealing with an alliance between HYDRA and Grindelwald. So in the end there's no way of telling the exact details of his life before he became "capsicle".
243** Characters from several different canons end up being related to each other (something engineered by Doctor Strange as part of ThePlan to defeat Thanos), which got so complex it led to this fic being one of the only works of ''any'' kind to have their own page for [[TangledFamilyTree/ChildOfTheStorm Tangled Family Tree]]. Highlights include Harry Potter being Thor's son via an early attempt at the whole humility thing (the basis of this fic) and a cousin of Jean Grey [[spoiler: and Maddie Pryor]] on his mother's side, and [[ComicBook/{{Hawkeye}} Clint Barton]] being related to ''ComicBook/{{Superman}}'' (by adoption) and Minerva [=McGonagall=] and [[spoiler: Bucky Barnes]] (biologically). In Harry's case, at least, it gets lampshaded in chapter 52 of the sequel, by Carol Danvers: "I swear, your ''[[PrecisionFStrike fucking]]'' family..."
244** The X-Men are a mixture of the [[Film/XMenFilmSeries Films]] (particularly ''Film/XMenFirstClass''), ''WesternAnimation/XMenEvolution'', and [[ComicBook/XMen the comics]], along with a bunch of {{Noodle Incident}}s:
245*** Magneto was rescued from Auschwitz by Steve and spent some time at Hogwarts as it was assumed he was a wandless wizard.
246*** The original team was the team from ''First Class'', also coordinated by Peggy Carter and with [[spoiler: Alison, her daughter via Steve]] as another member.
247*** Jean, Scott (here, Alex Summers' grandson), and Warren are all contemporaries, the former two being teenagers at the start of the story.
248*** Wolverine joined at some point in the early 1990s, and Xavier dealt with the Weapons Plus/Weapon X program, and he acts as a teacher at the Institute along with Storm, as in ''Evolution''.
249** Jor-El arranged his son to end up with the Kents via his connections to S.H.I.E.L.D., and at one point he fought against the Red Room alongside Peggy Carter, Howard Stark, Charles Xavier, Mar-Vell, and [[Series/StargateSG1 Teal'c and Bra'tac]].
250** Wanda Maximoff is once again the daughter of Magneto, but not Quicksilver's twin, being in her mid-40s when the story starts. She was assumed stillborn by her father, after he fought Voldemort on the slopes of Mount Wundagore, and raised by her maternal relatives, before her magic and mutation came out and she was nearly executed by [[Literature/TheDresdenFiles The White Council]] as a threat, with Magneto taking her to Xavier, Dumbledore, and Howard Stark for help, before Strange intervened and trained her as his successor. She would later become a member of the Order of the Phoenix, had a relationship [[spoiler: and a child, Hermione Granger]] with ComicBook/JohnConstantine (naturally, an ex-Slytherin, also an Order Member), and became the godmother of Harry Potter.
251** Zatanna Zatara's parents were also members of the Order of the Phoenix, and invented a blending of Wandless and Wanded Magic before being killed, which Zatanna mastered.
252** Several intra-franchise conflicts occurred in the past, such as [[Franchise/GreenLantern Alan Scott]] as SHIELD's counter to ComicBook/{{Magneto}}, Apocalypse having originally fought a collection of enemies including Black Adam and ComicBook/DoctorFate, or ComicBook/DoctorStrange eliminating some god-like enhancements Grindelwald had acquired from a DealWithTheDevil (several even) from the likes of Mephisto and Dormammu, before leaving him to Dumbledore.
253** The existence of the [[ComicBook/SpiderVerse Spider Totems]] is known to the magical community and even gets mentioned in Harry's DADA class.
254** The vampires follow ''Literature/TheDresdenFiles'' system, replacing the ''Literature/HarryPotter'' ones, with an addition of the Grey Court to fit Marvel-verse vampires.
255** Some characters are blended together into one, such as [[ComicBook/CaptainBritainAndMI13 Peter Wisdom]] being [[spoiler: Regulus Black]] and [[spoiler:Dudley Dursley]] becoming the Blob.
256** [[ComicBook/XMen The Phoenix Force]] is now also [[spoiler:Destruction from ''ComicBook/TheSandman1989'']] and the source of [[spoiler: Harry's protection via a deal with Lily Potter]].
257* [[WMG/FriendsAndTheHighCouncil The Friends and the High Council WMG]] is an attempt to do this with every Disney-owned property.
258* ''Fanfic/BloodSisters'' basically operates on the premise that ''Literature/TheTwilightSaga'' is part of the wider mythology established in ''Series/LostGirl'', with the Cullens and Quillettes part of the wider fae community, although they are considered pariahs among the fae as they make an active effort to live among humans (and in the Cullens' case, are generally looked down on due to them having started as humans rather than being born fae). It’s also noted that wolf-shifters such as Dyson are basically intended to be the same species as the Quillettes, although this required a few changes to be made to bring the two species together; the most significant change so far is that Dyson is now capable of imprinting, with Bo being his imprint.
259* [[https://archiveofourown.org/works/673301 "We Are Not Shining Stars"]] transplants the characters of ''Series/{{Firefly}}'' into the universe of ''Series/BattlestarGalactica2003'', with such details as Companions being a part of Colonial society and Mal and Zoe having fought in the Third Tauron Civil War rather than the Unification War. At the fic's conclusion, [[spoiler:''Serenity'' is fitted with an FTL drive stolen from a Cylon raider, allowing the whole of the Caprican resistance to jump back to the fleet thanks to Kara's coordinates and Sharon's technical expertise]].
260* In ''Fanfic/GargoylesAndTurtlesUnsungDefenders'', when [[Franchise/TeenageMutantNinjaTurtles Splinter]] first meets [[WesternAnimation/{{Gargoyles}} the gargoyles]], he observes that he heard of gargoyles from tales told by his father of how feudal gargoyles would defend their territory alongside feudal samurai.
261* ''Fanfic/OfGemstonesAndWatches'' welds the Prime Ben 10 universe and the 2016 Reboot together- multiple concepts from the 2016 show have popped up in universe, such as the original aliens, certain plot points and villains.
262* ''Fanfic/JauneArcLordOfHunger'' establishes that the Brother Gods in ''WebAnimation/{{RWBY}}'' are actually [[SufficientlyAdvancedAliens Celestials]] and Remnant is located within the Unknown Regions of the ''Franchise/StarWars'' galaxy. Additionally, both Aura and the magic on Remnant are revealed to be extensions of the Force.
263* The ''{{Series/Firefly}}'' fic “[[https://m.fanfiction.net/s/3010722/1/Just-Folk-Now Just Folk Now]]” does a weld where Mal was Caleb from ''Series/BuffyTheVampireSlayer'', Zoe was Jasmine and Jayne was Marcus Hamilton, both from ''{{Series/Angel}}'' and Inara was Adria from ''{{Series/StargateSG1}}''. As the title says, they’re all just normal humans now, living in the ‘verse. Fans actually weld Whedonverse canons quite often in fanfiction.
264* In ''Fanfic/DigimonUnited'', the events of ''Adventure'', ''02'', and ''Tamers'' are all comfirmed to take place on the same Earth.
265* ''Fanfic/InkyFuture'' turns the future world of ''{{Franchise/Splatoon}}'' into the future of ''VideoGame/MegaManClassic'', due to the former's apocalypse happening before ''VideoGame/MegaManX'' was woken up. This results in X himself awakening in a world where humans went extinct and were replaced by human-like cephalopods (aka Inklings and Octarians). It also links together Mega Man as the future of another Capcom franchise, specifically ''{{Franchise/StreetFighter}}'', due to Dr. Light having learned Ansatsuken, with his teacher implied to have been Ken Masters.
266* The world of ''Fanfic/TheNewAgeOfMonsters'' is an amalgamation of the entire Godzilla franchise. As a result, the backstory of many characters and events from the other franchises have been changed to fit in this new continuity
267** The Symphogears were created with Mothra's help and are powered by her song
268** The drift technology was developed by studying Saegusa Miki's brain
269** Jet Jaguar is an AI-controlled Jaeger
270** [[spoiler: The creator of the Pacific Rim kaijus is the long-lost civilization of Mu]]
271** Doctor Ver and Finé are now eco-terrorists who want humanity to stop fighting and give earth back to the kaiju
272** [[spoiler: The Evangelions are created by giving Godzilla's blood to humans]]
273** Several of the Evangelion angels appear as Breachers
274** The Autoscorers are Hotua that have been exiled for misusing Mothra's gift of alchemy
275** Shem-Ha is the last survivor of the martian civilization that was eradicated by King Gidorah
276* ''Fanfic/AIsA'' has this as part of the "Clancy-verse", where the Jack Ryan novels up to Literature/TheBearAndTheDragon have already occured, and welds them to VideoGame/RainbowSixSiege (The new incarnation of Team Rainbow), VideoGame/WatchDogs (The confirmed existence of Ded_Sec), and VideoGame/GhostReconWildlands (Mentioning the Santa Blanca Cartel).
277[[/folder]]
278
279[[folder:Films -- Animation]]
280* WesternAnimation/TheLegoBatmanMovie takes place in a continuity where ''all'' the previous ''Franchise/{{Batman}}'' movies, TV show appearances and comics happened, including the 1966 Creator/AdamWest show, ''WesternAnimation/BatmanTheAnimatedSeries'', the ''WesternAnimation/SuperFriends'' cartoon, and the comic story lines going all the way back to the 1930s. In one scene, Alfred connects a ''lot'' of movies to this one in one line of dialogue.
281-->'''Alfred:''' Sir, I've seen you go through similar phases in [[Film/BatmanVSupermanDawnOfJustice 2016]], and [[Film/TheDarkKnightRises 2012]], and [[Film/TheDarkKnight 2008]], and [[Film/BatmanBegins 2005]], and [[Film/BatmanAndRobin 1997]], and [[Film/BatmanForever 1995]], and [[Film/BatmanReturns 1992]], and [[Film/Batman1989 1989]], and that weird one in [[Film/BatmanTheMovie 1966]].
282* ''WesternAnimation/{{SCOOB}}'' was intended to kick-off an [[SharedUniverse animated cinematic universe]] based on the Creator/HannaBarbera cartoons (see also the Western Animation section below) with this movie based on the Franchise/ScoobyDoo property but featuring Dick Dastardly from WesternAnimation/WackyRaces as the villain and also introducing Blue Falcon and WesternAnimation/{{Dynomutt|Dog Wonder}} as major characters. WesternAnimation/{{Captain Caveman|And The Teen Angels}} also appears.
283[[/folder]]
284
285[[folder:Films -- Live-Action]]
286* This trope has been present in horror films for a long, long time. In the Franchise/UniversalHorror series, ''Film/FrankensteinMeetsTheWolfMan'' triggered the tendency to pile on the monsters, insisting that Dracula, the Wolf Man and Frankenstein's Monster all existed in a common universe. This does not work well with continuity -- ''Film/TheWolfMan1941'' takes place in the present day while the others happen in a dimly-characterized past -- but they didn't care much by that point (Universal's horror films of the '40s are strikingly dumber and more juvenile than those of the '30s).
287* Predating even these examples is Creator/FritzLang's 1933 thriller ''Film/TheTestamentOfDrMabuse''. Nominally a sequel to ''Film/DrMabuseTheGambler'', it also incorporates Inspector Lohmann from Lang's ''Film/{{M}}'' as the main protagonist. Blending the supervillain from a pulp thriller with the hero of a police procedural works surprisingly well, enough that a 1960s revival of the ''Mabuse'' series retains Lohmann as its protagonist.
288* In all honesty, ''Franchise/{{Alien}}'' and ''Franchise/{{Predator}}'' were never really meant to part of the same universe. The Xenomorph head seen near the end of ''Film/Predator2'' was only meant as a reference to the non-canon comic book series that was being worked on at the time. It wasn't until the ''Film/AlienVsPredator'' film that the connection was made completely canonical. Hints placed by Creator/RidleyScott in ''Film/{{Prometheus}}'' and in the latest re-edit of ''Film/BladeRunner'' suggest that they (and of course the rest of the ''Film/{{Alien}}'' franchise, and transitively ''Franchise/{{Predator}})'' share the same continuity.
289* Creator/{{Toho}}'s [[{{Kaiju}} giant monster]] movies ''Film/{{Godzilla|1954}}'' (1954), ''Film/{{Rodan}}'' (1956) and ''Film/{{Mothra}}'' (1961) were originally standalone films about unrelated monsters, but they all gradually became part of the loosely defined ''Franchise/{{Godzilla}}'' universe over time. The {{crossover}} film ''Film/MothraVsGodzilla'' was the first step, but the mega-crossover ''Film/GhidorahTheThreeHeadedMonster'' took it a step further when Godzilla and Mothra teamed up with Rodan against King Ghidorah, and ''Film/DestroyAllMonsters'' took it up a notch when it threw in Manda (from ''Film/{{Atragon}}''), Baragon (from ''Film/FrankensteinConquersTheWorld''), Varan (from ''Film/VaranTheUnbelievable''), and Gorosaurus (from ''Film/KingKongEscapes''), as well as the addition of Maser Cannons (from ''Film/WarOfTheGargantuas''). Later on, ''Film/GodzillaVsSpacegodzilla'' introduced Moguera (from ''Film/TheMysterians'') into TheVerse, with ancillary material establishing that the Moguera from the former film was inspired in-universe by the original; while ''Film/GodzillaTokyoSOS'' gives Kamoebas (from ''Film/SpaceAmoeba'') a posthumous cameo. Two {{Continuity Reboot}}s later, the series' GrandFinale ''Film/GodzillaFinalWars'' even added the Godzilla from [[Film/Godzilla1998 the 1998 American remake]] (now renamed "Zilla")... who promptly [[TakeThat got his butt kicked by the original Japanese Godzilla]].[[note]] Similarly, the AlternateContinuity film ''Film/GodzillaMothraKingGhidorahGiantMonstersAllOutAttack'' acknowledges the existence of the American Godzilla, but establishes that he was a different monster who was mistaken by the americans. The english dub of said film also references ''WesternAnimation/GodzillaTheSeries''. [[/note]] The animated film, ''Anime/GodzillaPlanetOfTheMonsters'', also slots Dagahra (from ''Film/RebirthOfMothra2'') and Dogora (from ''Film/{{Dogora}}'') into the mix.
290** {{Subverted|Trope}} with ''Film/KingKongVsGodzilla'' and its sequel ''Film/KingKongEscapes''. The films ostensibly take place in the same universe as ''Film/KingKong1933'', but they take a BroadStrokes approach to it, and Toho's Kong is quite different from the American one. He lives on "Mondo Island" instead of "Skull Island", he's considerably bigger (thanks to some powerful [[FantasticFruitsAndVegetables magic berries]]), and he has a much more human-like face. Oh... and [[RuleOfCool he can shoot lightning out of his hands]].
291* Creator/FullMoonFeatures has done this a lot over their existence, complete with direct {{Crossover}}s like ''Film/{{Dollman}} vs. Film/DemonicToys'', characters cameoing in other movies, and ''Film/TheGingerdeadMan'' being a regular recurring character in the ''Film/EvilBong'' series now that his series is done. Ironically, there's also ''Film/PuppetMaster vs. Film/DemonicToys'', which was originally a Full Moon production but was licensed out and made by Creator/{{Syfy}}, which Full Moon's founder Charles Band now counts as non-canon to both the studio and the series.
292* Besides all the above, other crossover horror films such as ''Film/FreddyVsJason'', ''Film/SadakoVsKayako'' and ''Film/LakePlacidVsAnaconda'' are all further examples.
293* Creator/QuentinTarantino has created a largely common universe of his films by including subtle crossreferences (for instance, characters commonly refer to others; Mr. White mentions Alabama and Mr. Blonde has Scagnetti as a parole officer, Vic Vega and Vincent Vega are brothers, etc.) and cameos, but he says that his movies are divided into ''two'' universes.
294** The first is an [[spoiler:alternate reality where Hitler was shot down in a theater causing Americans to be obsessed with pop culture and extremely violent]], which consists of ''Film/PulpFiction'', ''Film/ReservoirDogs'', ''Film/TrueRomance'', ''Film/InglouriousBasterds'', ''Film/DeathProof'' and possibly ''Film/DjangoUnchained''.
295** The second is a universe that takes place in Tarantino movies that are supposedly released in both the real world and the main Quentin Tarantino Universe, which consists of ''Film/KillBill, Film/FromDuskTillDawn, Film/NaturalBornKillers'', and possibly ''Film/{{Machete}}'' and ''Film/PlanetTerror'' because of cameos of Earl and Edgar Mcgraw in both movies. Interestingly, the title character in ''Film/{{Machete}}'' appears in another of Creator/RobertRodriguez's films: ''Film/SpyKids''.
296** Tarantino has also stated that Django and his wife Broomhilda are intended to be the ancestors of [[Film/{{Shaft}} John Shaft]].
297* An interesting example occurs with the ''Film/{{Cloverfield}}'' franchise, which ended up having to be welded to ''itself''. The first film was a standalone found-footage movie, and despite numerous [[SequelHook Sequel Hooks]], nothing came of them for a very long time. The next time the series' name showed up was ''Film/TenCloverfieldLane'', a film which had practically nothing to do with the original and felt very much InNameOnly; rather than a found footage film, ''10 Cloverfield Lane'' was a psychological horror film, and dealt with a human villain [[spoiler:and an alien invasion]] rather than a giant monster attack. WildMassGuessing abounded on how these two films actually connected. It wasn't until the third film, ''Film/TheCloverfieldParadox'', that [[TheMultiverse the true relationship between entries]] becomes clear; said film also [[spoiler:serves as a prequel to the original ''Cloverfield'', and sees Clover itself (or another member of the same species) appear at the very ending]].
298* The 1980s/'90s series of ''Franchise/{{Superman}}'' and ''Franchise/{{Batman}}'' films made no reference to each other and given their vast differences in tone might have been assumed to take place in very different universes (despite their comic books having long been from the same universe), until Bruce mentions that the circus Dick had performed with "must be halfway to Metropolis by now" in ''Film/BatmanForever''. That didn't prove it for everyone, though (Metropolis might just be another city in Batman's world, die-hards argued); it wasn't until [[Film/BatmanAndRobin the next movie]] that the canon welding was made official, in ''the most cringe-inducing way possible.''
299-->'''Robin:''' ''[checking out the Batmobile]'' I want a car. Chicks dig the car!\
300'''Batman:''' ''[turning to camera]'' This is why Superman works alone.
301* An unusual example comes from ''Film/Shazam2019'', set in the Franchise/DCExtendedUniverse -- a social worker who appears previously appeared in another film from the same director, ''Film/LightsOut2016'', which was a horror film with no connection to DC Comics.
302* Once Creator/NewLineCinema took over the ''Franchise/FridayThe13th'' franchise from Creator/{{Paramount}}, the first film they made, ''Film/JasonGoesToHellTheFinalFriday'', ended with a [[SequelHook crossover hook]] indicating that it was set in the same universe as ''Franchise/ANightmareOnElmStreet'', New Line's marque SlasherMovie franchise. Horror fans had long dreamed of a showdown between the slasher icons Jason Voorhees and Freddy Krueger, but Paramount and New Line could never agree on a script. Nine years of DevelopmentHell later, New Line followed through with ''Film/FreddyVsJason''.
303* ''Film/JayAndSilentBobReboot'' retroactively brought ''Film/ZackAndMiriMakeAPorno'' into Film/TheViewAskewniverse by having [[EnsembleDarkHorse Brandon]] make a cameo early on as a Hollywood lawyer. The film couldn't explicitly name him, however, as Creator/KevinSmith didn't own the rights to ''Zack and Miri''.
304* An [[AvertedTrope averted example]] was supposed to happen with ''Mathilda'', which would have been not just a sequel to ''Film/TheProfessional'' but it would have also contained references to Creator/LucBesson's previous assassin film ''[[Film/{{Nikita}} La Femme Nikita]]'' thus placing all three films in the same universe per WordOfGod. However, because Besson was estranged from Gaumont and unable to get Creator/NataliePortman interested in the project, he decided to make it a standalone movie titled ''Film/{{Colombiana}}'' with Creator/ZoeSaldana in the lead role.
305* Another aversion happened with ''Film/ManiacCop2''. Director William Lustig originally wanted to cast Joe Spinell, who played the SerialKiller Frank Zito in Lustig's previous slasher ''Film/Maniac1980'' (which he also wrote the screenplay for), as the villain and have both that film and the ''Film/ManiacCop'' series take place in the same universe, but Spinell died in a bathtub accident before production began. This film's serial killer [[BigBadDuumvirate co-villain]] was subsequently [[DivorcedInstallment rewritten]] into a SuspiciouslySimilarSubstitute.
306* ''Film/SpiderManNoWayHome'': The movie involves characters from alternate universes being pulled into the [[Franchise/MarvelCinematicUniverse Marvel Cinematic Universe]] -- specifically, villains from the [[Film/SpiderManTrilogy Sam Raimi Spider-Man trilogy]] and the [[Film/TheAmazingSpiderManSeries Amazing Spider-Man movies]], making those two movie universes part of the greater MCU-established multiverse. [[spoiler: The post-credit scenes of this movie and ''Film/VenomLetThereBeCarnage'' also makes that incarnation of ComicBook/{{Venom}} and Film/SonysSpiderManUniverse part of the larger MCU Multiverse.]]
307* An [[https://www.flickeringmyth.com/2018/09/interview-with-robert-mcginley-on-danger-diva/ interview]] about ''Film/DangerDiva'' confirmed the film is set in the same universe as ''Film/ShredderOrpheus'', with both films being set in Seattle, having the Grey Zone as a place for the poor, shared technology like hypno-pulses, ''Shredder'' actors being cast in similar roles, and sharing high-concept mythological themes.
308* Creator/GuillermoDelToro [[WordOfGod has confirmed]] that two gureilla fighters killed in ''Film/PansLabyrinth'' are [[spoiler: Carlos and Jaime]] from his earlier film, ''Film/TheDevilsBackbone''.
309* Several Creator/{{Disney}} live-action films of the 1960s and 70s share a loosely-connected universe. The main antagonist of ''Film/TheAbsentMindedProfessor'' and sequel ''Film/SonOfFlubber'', Alonzo Hawk (Creator/KeenanWynn), later appeared the BigBad in ''[[Film/TheLoveBug Herbie Rides Again]]'' (he also played an {{Expy}} in two other films, ''Snowball Express'' and ''The Shaggy D.A.''); the bumbling cops from ''Film/TheShaggyDog'', Hanson and Kelly, also appear in ''TAMP''. The setting of ''TAMP'' and ''SOF'', the fictional Medfield College, was also the setting for a trilogy of later films featuring Creator/KurtRussell as Dexter Riley: ''Film/TheComputerWoreTennisShoes'', ''Film/NowYouSeeHimNowYouDont'', and ''Film/TheStrongestManInTheWorld''.
310[[/folder]]
311
312[[folder:Gamebooks]]
313* The ninth ''Literature/FightingFantasy'' gamebook, ''Literature/CavernsOfTheSnowWitch'', took the player on a tour of the major locations from two of the previous books (''Literature/TheWarlockOfFiretopMountain'' and ''Literature/TheForestOfDoom''), establishing that they all took place in the same land of Allansia. (It also name-checked a character from ''Forest of Doom''.) The monster manual ''Literature/OutOfThePit'' then expanded this world: Allansia and The Old World, the setting for the ''Literature/{{Sorcery}}'' series of gamebooks, were two continents on the world of Titan.
314[[/folder]]
315
316[[folder:Live-Action TV]]
317* All of Creator/{{Chespirito}}'s works have long been implied to be set in the same universe. Indeed, [[Series/ElChavoDelOcho El Chavo (del Ocho)]] and Series/ElChapulinColorado had met at least once.
318* Creator/StevenMoffat has welded a fair number of his series together over the years: ''Series/{{Chalk}}'' contained frequent references to ''Series/PressGang'', and was in turn referred back to by ''Series/{{Coupling}}''; ''Series/{{Jekyll}}'' also referred to ''Series/PressGang'' and ''Coupling'' has references too.
319* ''Franchise/{{Arrowverse}}'':
320** After [[ComicBook/{{Hellblazer}} John Constantine]]'s [[Series/Constantine2014 show on NBC]] was cancelled, a deal was struck to bring the character into ''Series/{{Arrow}}'' (and by extension, the Arrowverse) for a guest spot, played by [[Creator/MattRyan the same actor]] using the same props and costumes, and thus importing that show into the larger franchise.
321*** Later, Constantine performs the very rare ''reverse'' SpinOff, and becomes part of the ''Series/LegendsOfTomorrow'' ensemble.
322** ''Series/TheFlash2014'' has the multiverse as a large part of the arc of its second season. In the episode [[Recap/TheFlash2014S2E13WelcomeToEarthTwo "Welcome to Earth Two"]], two of the alternate worlds shown as ''Series/TheFlash1990'' and ''Series/Supergirl2015''. Since then, Supergirl has become one of the core shows of the 'verse, while the 90's Flash has made a couple of appearances.
323** The 'verse's ''Series/CrisisOnInfiniteEarths2019'' crossover caused a boatload of this:
324*** ''Series/BlackLightning2018'' started off as the only superhero show on the CW ''not'' part of the Arrowverse... until it was announced that Black Lightning would be appearing in the crossover, although the show itself would not be devoting an episode to it.
325*** Creator/BrandonRouth also appears reprising his Superman, the one from ''Film/SupermanReturns'', who is also supposed to be the one from ''Film/SupermanTheMovie''.
326*** Creator/TomWelling and Creator/EricaDurance reprise their roles as ''Series/{{Smallville}}''[='s=] version of Superman and Lois Lane in a cameo appearance, Creator/RobertWuhl cameos as Alexander Knox from ''Film/Batman1989'', we get a glimpse of the Dick Grayson from the [[Series/Batman1966 original Batman TV show]], Lucifer Morningstar from his [[Series/Lucifer2016 titular series]] briefly encounters some heroes, and Creator/AshleyScott appears as Helena Kyle from ''Series/BirdsOfPrey2002''. Meanwhile, stock footage of ''Series/Titans2018'', ''Series/Stargirl2020'', ''Series/DoomPatrol2019'', and ''Series/SwampThing2019'' appear at various points in the show.
327*** Last but not least, Creator/EzraMiller reprises their role as the cinematic Barry Allen from the ''Franchise/DCExtendedUniverse''.
328*** Speaking of ''Supergirl'' (see above), this series was for it's first four season part of the multiverse, but toke place on [[AlternateUniverse Earth-38]] with crossovers having to involve some [[DimensionalTraveler dimension hopping]]. After the events of ''Crisis'' however Supergirl was now integrated into the Arrowverse's retooled main continuity going forward.
329* Creator/RussellTDavies has suggested that Adam Mitchell's mum in ''Series/DoctorWho'', played by Judy Holt, may be the same person as Sister Mitchell in ''Series/ChildrensWard'', also played by Judy Holt, which would bring RTD's earlier programme into the Franchise/{{Whoniverse}}. He was ''probably'' joking. He also slipped a reference to "the Vivaldi inheritance in 2004" into ''Series/TorchwoodMiracleDay'', referring to his ITV series ''Series/MineAllMine'' ... which included Gareth David-Lloyd as a character called Yanto Jones, only one letter off from his Ianto Jones in prior series of ''Series/{{Torchwood}}''.
330* Thanks to its importation of the ''Series/HomicideLifeOnTheStreet'' character JustForFun/JohnMunch and its numerous other crossovers (some involving him, others not), the ''Franchise/LawAndOrder'' [[CashCowFranchise franchise]] managed to bring in ''Series/{{NCIS}}'', ''Series/NCISLosAngeles'', ''Series/{{JAG}}'', ''Series/FirstMonday'', ''Series/InPlainSight'', ''The Beat'', ''Series/HawaiiFive0'', ''Series/TheWire'', ''Series/ArrestedDevelopment'', ''Series/TheXFiles'', ''Series/TheLoneGunmen'', and ''Series/Millennium1996'' all into a single universe. Also, ''Series/SesameStreet'', if you count Muppet versions of the character. All this also fits into the Westphall Hypothesis above.
331** The scariest part of that link? ''The X-Files'' crossed over with ''Series/{{Cops}}'', a reality show, meaning that all those shows take place in our universe. Then again, ''The X-Files'' also crossed over with ''WesternAnimation/TheSimpsons'', an '''animated''' show...
332** NBC has also announced a crossover between ''Series/ChicagoPD'' and ''Series/LawAndOrderSVU'', this means that ''Series/ChicagoPD'' and ''Series/ChicagoFire'' are also part of this verse.
333** It's pretty heavily hinted at that ''all'' of the Creator/{{CBS}} procedural shows exist in a shared universe, so you can add ''Series/CriminalMinds'', ''Series/BlueBloods'', ''Series/{{Scorpion}}'', and a few others to that list above.
334* Later ''Franchise/KamenRider'' shows have taken steps to establish that the various characters created by Creator/ShotaroIshinomori (or at least AlternateUniverse versions of them) exist in the same universe. For example, characters from ''Series/SpaceIronmenKyodain'' appeared as the antagonists of one of the ''Series/KamenRiderFourze'' movies, while Inazuman appeared in the crossover movie between ''Fourze'' and ''Series/KamenRiderWizard''. ''Series/KamenRiderGaim'' also had a crossover with ''Series/{{Kikaider}}'' designed to promote the latter's new movie.
335* The Disney Channel has done several crossovers with their live action series, so that [[Series/ThatsSoRaven psychics]], [[Series/WizardsOfWaverlyPlace wizards]], [[Series/TheSuiteLifeOfZackAndCody Tipton Industries]], [[Series/CoryInTheHouse President Martinez]], [[Series/ImInTheBand Iron Weasel]], and Series/HannahMontana all exist in the same [[Franchise/DisneyChannelLiveActionUniverse universe]].
336* It's been more-or-less established that all Nickelodeon sitcoms beginning with ''Series/DrakeAndJosh'' all have some form of connection. Eventually enough crossovers happened for the Series/NickVerse to form. It is horrendously complicated by the fact that due to the way it came about, the actors and characters all exist alongside each other as real people. It includes ''Series/DrakeAndJosh'', ''Series/Zoey101'', ''Series/ICarly'', ''Series/{{Victorious}}'' and also causes ''Series/BigTimeRush'' and ''Series/TheNakedBrothersBand'' to enter the universe, via Creator/MirandaCosgrove showing up AsHerself on both those shows. This could somewhat more accurately (and awkwardly) be referred to as the Schneider-verse, for showrunner Dan Schneider.
337* Lisa Kudrow, who played a quirky waitress on ''Series/MadAboutYou'', played Phoebe on ''Series/{{Friends}}''. It was later revealed they were twin sisters and Ursula (the waitress) became a recurring character. It was also revealed that Paul once lived in the apartment now occupied by Kramer on ''Series/{{Seinfeld}}''.
338** In the second season of ''Friends'', there was a brief crossover with ''Series/CarolineInTheCity''. Matthew Perry had a brief appearance on the Caroline episode as Chandler while Creator/LeaThompson had an appearance Caroline in the Friends episode. Expanding beyond those two, earlier that same season [[Series/{{Frasier}} Niles Crane and Daphne Moon]] appeared in one ''Caroline'' episode, and Frasier himself showed up in an episode of ''Series/{{Wings}}.'' Based on this logic, potentially every NBC sitcom that ran during the 90's takes place in the same world (and also proceeds to directly tie into the Westphall example below).
339* There was a crossover between ''Series/MurderSheWrote'' and ''Series/MagnumPI'', and one between ''Series/MagnumPI'' and ''Series/SimonAndSimon''. Accordingly, all three are in the same universe.
340** An obscure '50s FilmNoir called ''Strange Bargain'' is also in the same universe as ''Murder She Wrote''. The episode "Days Dwindle Down" is actually a sequel to ''Strange Bargain'', featuring many of the original cast members reprising their roles, and Jessica uncovering the identity of the real killer from the movie.
341* Marcia Wallace appears in what at first appears to be a CastingGag as one of Series/MurphyBrown's [[RunningGag many, many secretaries]]. Then, at the end of the episode, [[Series/TheBobNewhartShow Bob and Jerry]] show up, begging her to come back to Chicago. Ergo, Murphy Brown takes place in the Bob Newhart 'verse. What effect the series finale of that show has on Murphy & Co. is a RiddleForTheAges.
342* Although the Showtime revival ''Series/TheOuterLimits1995'' was an anthology show, it usually ended its seasons with money-saving clip shows tying multiple prior episodes together into a single continuity.
343* ''Franchise/PowerRangers'' has gone through this a few times. While the first six seasons were all one storyline and the seventh (''Series/PowerRangersLostGalaxy'') was a direct sequel, each one past that has been self-contained; though many would make small references to prior seasons or at least eventually team up with the prior season's cast. Only two seasons (''Series/PowerRangersNinjaStorm'' and ''Series/PowerRangersRPM'') have been welded in after the fact, having nothing in themselves to connect to the rest of the franchise; and the third unconnected season (''Series/PowerRangersJungleFury'') has been welded into ''Series/PowerRangersMegaforce'''s CrisisCrossover. Also notable was that ''Series/PowerRangersLightspeedRescue'' welding itself to ''Lost Galaxy'' retconned the latter from TwentyMinutesIntoTheFuture to the present day. (''Lost Galaxy'' also once referenced the universal coordinates of [[Series/DoctorWho the Doctor's]] homeworld Gallifrey.)
344* Rumors abound to this day that Patrick [=McGoohan=]'s Number 6 from ''Series/ThePrisoner1967'' is the same character as John Drake, his role in the earlier series ''Series/DangerMan''. [=McGoohan=] always denied it while other people involved in the show supported it, in what was probably a deliberate attempt to screw with the fans some more.
345** It's been suggested that [=McGoohan=] tended to deny it solely because he didn't hold the rights to his previous role, and thus, establishing a direct connection could be considered copyright infringement and therefore actionable. His co-writer on the series has always claimed that it was definitely Drake.
346* The 1970s Creator/{{ITV}} relaunch of Creator/TheBBC sitcom ''The Rag Trade'' had Creator/PeterJones and Mirian Karlin reprising their roles from the sixties series, confirming they were in the same continuity ... and also added Olive from the same creators' ''Series/OnTheBuses''. (The character of Reg Turner [[TheDanza played by]] Creator/RegVarney wasn't in the relaunch, so Olive didn't wonder why he [[YouLookFamiliar looked like her brother Stan]].)
347* In the last episode of ''Series/SpinCity'' where Creator/MichaelJFox appears as a regular, it is suggested that the series takes place in the same universe as ''Series/FamilyTies''.
348* Taking this to the extreme, due to various character cameos and crossovers, much of television history may take place in the mind of ''Series/StElsewhere'''s [[http://home.vicnet.net.au/~kwgow/crossovers.html Tommy Westphall]].
349* The ''Franchise/SuperSentai'' franchise used to be separate from each other. This changed with ''Series/KaizokuSentaiGokaiger'', putting them all together in one big universe. This was further expanded in the movie ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie'', which brought over the ''Series/MetalHeroes'' franchise, which was further expanded when Gavan's successor, Gavan Type-G, appeared in ''Series/TokumeiSentaiGoBusters'' and ''Series/SekaiNinjaSenJiraya'' in ''Series/ShurikenSentaiNinninger''.
350* The ''Franchise/UltraSeries'': Originally, the [[Series/UltraQ first]] [[Series/{{Ultraman}} three]] [[Series/UltraSeven shows]] had minimal connections aside a few minor nods here and there. However, with ''Series/ReturnOfUltraman'', they were united into a singular continuity that followed for the rest of the Showa era, as well as with the Heisei series ''Series/UltramanMebius'' and ''Series/UltraGalaxyMegaMonsterBattle'' (which ends up creating a lot of contradictions as a result). Then, with the ''Franchise/UltramanZero'' movies, the remainder of the franchise was linked up with the Showa universe to create [[TheMultiverse a massive multiverse]], and then afterwards it gets super-confusing from there.
351* In ''Series/GranHotel'', Detective Ayala, played by Pep Antón Muñoz, investigates crime around a [[BigFancyHouse big fancy hotel]] during the first decade of the twentieth century. In ''Series/AltaMar'' (set in the 1940s), Doctor Ayala, also played by Muñoz, boards the Barbara de Braganza and tells the head of ship's security that his father was a criminal investigator. Confirmed by WordOfGod that the characters are meant to be father and son.
352[[/folder]]
353
354[[folder:Myths & Religion]]
355* Myth/RobinHood went through several rounds of this, along with AdaptationDisplacement. Maid Marion (or "Marian"), Friar Tuck, and Alan-a-Dale were all characters from separate folk tales, and it was only later that Robin Hood stories had anything to do with Richard the Lionheart or Prince John.
356* The ''Equivicatio Romana'' by which each of the gods and goddesses of the other pantheons the Romans encountered was said to be another name for the nearest equivalent in their pantheon--sometimes by a great deal of squinting.
357* ''Euhemerism'' which postulates that the pagan gods and goddesses [[{{Demythification}} were actually great heroes and heroines]] who lived long ago and whose reputations snowballed until they became gods.
358** Herodotus one-ups Euhemeris by trying to equate Egyptian mythology and Greek mythology.
359* The two Myth/ClassicalMythology stories that bring together large numbers of Greek heroes likely have their origins in Canon Welding: the Voyage of the Argo and the Calydonian Boar Hunt both feature characters like Herakles, Theseus, Bellerophon and so on.
360* ''Literature/HistoriaRegumBritanniae'' weaves ''Literature/TheAeneid'', ''Literature/TheIliad'' and ''Literature/TheOdyssey'' into Myth/ArthurianLegend by having Brutus of Troy sail to pre-Roman Britain and found a new empire with New Troy (aka UsefulNotes/{{London}}) as the capital which sets the stage for Arthur and the Knights of the Round Table.
361* A lot of theological ink has been spilt over two millenia in attempting to draw out a coherent welding of the often contradictory themes of the Old and New Testaments of Literature/TheBible, with insertions and foreshadowing of the mission of Jesus Christ drawn (often very tenuously) from the older religious texts. The Old Testament is effectively being retconned to include Jesus and to give the whole a greater coherence. All this began with the earliest Christian writers like Paul of Tarsus, who asserted Jesus had been predicted by Old Testament prophecies, in interpretations the Jews rejected. The main problem with linking the Testaments comes from later Jews not wanting anything to do with Jesus, and Gentile Christians not wanting Jesus "tainted" by Judaism, and both groups misunderstanding one another. Given how many times the New Testament references the Old Testament, the thematic links between the two (a promised land, a chosen people, God's blessing and kingship, etc.), and the professed Judaism of many of the authors, it's clear the New Testament authors meant the two testaments to be read together.
362[[/folder]]
363
364[[folder:Pinballs]]
365* ''Pinball/ThePartyZone'' takes three of Creator/DennisNordman's games -- ''Party Animal, Pinball/ElviraAndThePartyMonsters,'' and ''Pinball/DrDude'' -- and gives them in a shared continuity they never had before.
366[[/folder]]
367
368[[folder:Podcasts]]
369* The hosts of ''Podcast/MomCantCook'' often indulge in this between different films that, ostensibly, have nothing to do with each other. Most notably, they declare "reindeer flu" from ''Film/TwasTheNight'' and "the Spanish rice problem" from ''Film/{{Hounded}}'' to be one and the same, and then when Spanish rice is brought up in ''Stuck in the Suburbs'' as being "too spicy" for Brittany's dad, they declare he's inadvertently saved her from this disease. References to Agent Simms from ''Film/FirstKid'' keep appearing in subsequent episodes as well.
370* ''Podcast/PokemonWorldTourUnited'' establishes in its first episode that the series takes place twenty years after the events of the ''VideoGame/PokemonRedAndBlue'' video games, with Red being a Pallet Town hero and Blue being the first Gym Leader Rose and Cobalt face. However, the end of act one reveals that the new regime of Team Rocket is led by characters from ''Anime/PokemonTheSeries'' specifically [[spoiler:Jesse and James]]. Further, other characters from the anime, [[spoiler:Butch and Cassidy]], are aligned with a separate faction of Team Rocket that's ALighterShadeOfBlack. Later, when exploring the old Rocket hideout in the Celadon City Game Center, Cobalt uncovers a document describing the new regime's rise in power, which includes mentions of Ash and his frequent battles with grunts Jesse and James and their talking Meowth. This all amounts to show that, in this version of the ''Franchise/{{Pokemon}}'' universe, the events of the game ''and'' the events of the anime both occurred.
371[[/folder]]
372
373[[folder:Radio]]
374* Radio/TheGreenHornet was the son of Radio/TheLoneRanger's nephew back when the two were on the radio. However due to legal issues between those who currently own the two franchises, the connection isn't used at all anymore.
375* When ''Film/TheLastChanceDetectives'' were adapted to radio, their premiere episode included an appearance by Jason Whittaker of ''Radio/AdventuresInOdyssey'', welding the two previously unrelated Focus on the Family franchises.
376[[/folder]]
377
378[[folder:Roleplay]]
379* Any JournalRoleplay, {{MUSH}}, or similar roleplay which allows characters from multiple works of fiction must in some way explain how the crossover occurs. While the InnBetweenTheWorlds or the "[[OntologicalMystery spooky jamjar]]," in which the various characters somehow travel or are transported from their home settings into an original setting, is probably most common, some roleplays opt instead to adapt the source works into a single shared world. This is especially common for roleplays themed around a specific genre or franchise: notable examples include ''Franchise/MegaMan MUSH'', ''Franchise/{{Persona}} MUSH'', ''[[VideoGame/SuperRobotWars Super Robot Taisen]] MUSH'' and its SpiritualSuccessor ''Super Robot Wars MUSH'', ''Videoland MUSH'', and many others.
380* ''Roleplay/MahouMUSH'' is a MagicalGirl-themed game set in {{Tokyo|IsTheCenterOfTheUniverse}}, the setting of which adapts many magical girl series (and a number of original player-created themes) into a single continuity. Prominent themes thus adapted include ''Anime/MagicalGirlLyricalNanoha'', ''Anime/PuellaMagiMadokaMagica'', various ''Anime/PrettyCure''s (particularly ''Anime/HappinessChargePrettyCure''), ''Franchise/SailorMoon'', and ''Manga/ShugoChara''.
381[[/folder]]
382
383[[folder:Tabletop Games]]
384* ''TabletopGame/BattleTech'': Michael A. Stackpole has revealed in a 2002 German interview that Wolf's Dragoons unintentionally became an advance recon force for the Clans while the writers were planning out the Clan Invasion. Specifically, during a convention in 1988, Stackpole and Battletech co-creator Jordan Weisman were speculating about Natasha Kerensky's connection with Alexandr Kerensky when Stackpole noted the coincidence of Wolf's Dragoons and one of their planned Clans sharing a name. Since the Dragoons already had a mysterious past, the writers were able to cleanly connect them to the Clans.
385* ''TabletopGame/DeltaGreen'' has a complicated one between Creator/RobertWChambers' "The Maker of Moons", Creator/ColinWilson's "The Return of the Lloigor", [[https://www.chaosium.com/the-cruel-empire-of-tsan-chan-pdf/ The Cruel Empire of Tsan-Chan]] (a monograph for ''[[TabletopGame/CallOfCthulhu Call Of Cthulhu roleplaying game]]'' which expands on Lovecraft's ''Literature/TheShadowOutOfTime'') and Lovecraft's short story ''Literature/TheCallOfCthulhu''. The Kuen-Yuin, a cabal of Chinese sorcerers from "The Maker of Moons", are described as descendants of the Priest-Kings of Mu servants of the Lloigor (which are equated with the Xin from "The Maker of Moons"), the “deathless ones in the mountains of China” that control the worldwide cult of Cthulhu in "The Call of Cthulhu", and the small cadre of immortal sorcerers who rule over the Cruel Empire of Tsan-Chan (mentioned in a line of "The Shadow Out Of Time"), which will arise 5000 years in the future, after Cthulhu woke and humans went insane ("Dreamers"), finally casting good and evil aside and becoming like the Great Old Ones: shouting and reveling in a holocaust of ecstasy. Some material even suggest this future is incompatible and competing with the Yithian's plan to [[HumanitysWake wipe out mankind]] as seen in "The Shadow Out Of Time".
386* An odd version of this exists in ''TabletopGame/DungeonsAndDragons''. Gods cross over from one campaign setting to another, spells exist under different names, and so on. Initially the settings were welded only by implication, mostly mythological crossovers (shared gods) and in the names of spells (''Bigby's grasping hand'', ''Mordenkainen's hound'') indicating that divine beings and powerful wizards COULD travel between them, but providing no actual explanation. Later, the ''TabletopGame/{{Planescape}}'' and ''TabletopGame/{{Spelljammer}}'' meta-settings provided two (amusingly contradictory) explanations: in Planescape a stock-fantasy multiverse exists, with the added benefit of explaining where all the more biologically impossible elemental and evolutionarily improbable critters come from. Spelljammer is based on medieval cosmology, and adventurers can sail between the various crystal spheres in mighty magical craft riding currents in the luminiferous aether.
387** There was also the [[InnBetweenTheWorlds World Serpent Inn]], which even links campaign settings which are explicitly not part of the Planescape/Spelljammer cosmology, such as ''TabletopGame/{{Eberron}}''.
388** ''TabletopGame/{{Ravenloft}}'' is, itself, a product of Canon Welding, as its PatchworkMap incorporates several domains that were inspired, copied, and/or outright stolen from other AD&D campaign worlds. ''Literally'' stolen, in some cases.
389** The "legendary" settings of the various ''AD&D'' Historical Reference books were eventually revealed in the ''[[TimeTravel Chronomancer]]'' appendix to be the past of Gothic Earth from Ravenloft's ''TabletopGame/MasqueOfTheRedDeath'' ...which in turn may be the past of one of the magical ''TabletopGame/D20Modern'' settings -- probably Shadow Chasers (the Red Death gets mentioned in the ''Menace Manual'').
390** In D&D 4th Edition, there was a policy to enforce uniformity across the gameline by inserting setting elements from the core material into all official D&D settings, and [[{{Retcon}} retcons]] and setting-shaping disasters were applied wherever necessary to make it so. For example, the cosmology of the ''TabletopGame/ForgottenRealms'' had to allow for such things as the Primordials and the Feywild because those were part of the ''TabletopGame/NentirVale'' cosmology. However ''TabletopGame/DarkSun'' in 4e was largely able to maintain its independence from such core elements, either by slapping new names on old Athasian material (and often ignoring them afterwards) or by rejecting them entirely if they couldn't. (This is in part helped by ''Dark Sun'''s traditional independence from the rest of the D&D line; crossovers were firmly discouraged even at the height of the TSR and Planescape days.)
391** The D&D 5th edition supplements ''Plane Shift: Innistrad'' and ''Plane Shift: Zendikar'' enable campaigns to be set in the ''TabletopGame/MagicTheGathering'' multiverse.
392* The ''TabletopGame/OldWorldOfDarkness'' started off as a set of {{tabletop RPG}}s each designed as a stand-alone, but since they shared the same basic gameplay and theme, crossovers were an obvious possibility. White Wolf acknowledged this by grouping them together, but they don't all fit that well. ''TabletopGame/VampireTheMasquerade'' has a Biblical origin story, while ''TabletopGame/WerewolfTheApocalypse'' has a pagan backstory. Vampires and mages are both supposed to have secret societies manipulating human history for centuries at least, with directly conflicting goals, yet there's only one case in canon of them fighting each other. And several games have a metaplot pointing to the forthcoming end of the world, but all have a different scenario for it. When it came to mechanics, mages can curbstomp any of the other supernatural beings unless caught unaware (especially vampires, since the best way to counter mages' magic is to ''be alive'').
393** From the very first edition of Vampire, it was implied that the Tremere vampire clan were connected to House Tremere in the earlier ''TabletopGame/ArsMagica'' game (which shared some design staff with Vampire). This was later dropped, as the rights to ''Ars Magica'' shifted publishers, and the later ''Vampire: The Dark Ages'' setting explicitly took place in the same time period as ''Ars Magica'', but told a very different version of the story.
394** The ''TabletopGame/NewWorldOfDarkness'' is made with the possibility of such crossovers explicitly in mind, at the same time keeping each group generally out of each others' way. For example, the Supernal Realms of ''TabletopGame/MageTheAwakening'' and the Shadow World of ''TabletopGame/WerewolfTheForsaken'' have little to do with each other, but equally don't step on each other's cosmological toes.
395** ''TabletopGame/{{Exalted}}'' was an inversion. The original concept for the game was for it to be set in the forgotten, mythical prehistory of the ''Old World of Darkness''... but it was ultimately decided not to make this an absolute of the setting, and reduce the connections to common setting elements and parallels that hint at the possibility. The tagline "Before there was a world of darkness..." is TheArtifact of the original concept.
396* ''TabletopGame/{{Rifts}}'':
397** Want ''Anime/{{Robotech}}'' mecha to fight the ''Franchise/TeenageMutantNinjaTurtles'' alongside unicorn-riding cyborgs, only to have them all ambushed by {{eldritch abomination}}s? Have at it! Creator/PalladiumBooks specifically published conversion books for incorporating their other franchises into ''Rifts'' rules.
398** The Rifts Chaos Earth RPG (which takes place ''during'' The Great Cataclysm) explicitly state that ''Rifts'' is the future of the ''TabletopGame/BeyondTheSupernatural'' setting. This had previously been Kevin Siembieda's headcanon, but he hadn't wanted to firmly state it because ''Rifts'' was also supposed to be ''our'' Earth's future.
399* The ''TabletopGame/{{Warhammer}}'' and ''TabletopGame/Warhammer40000'' universes used to be linked, although the linking statements were made by mad characters. The whole saga/background is told through an UnreliableNarrator anyway. [[WordOfGod Games Workshop]] has stated that the link is now done away with, since it was mostly silly anyway. The world of Warhammer used to be a planet in the 40k universe, surrounded by warp storms that made it inaccessible for the rest of the galaxy. Nowadays, they exist in separate universes, but there appears to be a small link between them in the form of the Warp (the Chaos Gods are the same in each universe, and some people in Warhammer's world have gotten visions of Chaos in the Warhammer 40,000 universe. For example, in ''Liber Chaotica: Book of Khorne'', it's all but outright stated the author is having visions of Abaddon's 13th Black Crusade. Also the [[{{Precursors}} Old Ones]] in ''Warhammer'' appear to be the same as the ones in 40k, and a fan theory suggests they escaped from the 40k universe to the ''Warhammer'' one after the War in Heaven, or that the opposite happened and they were forced to abandon it to fight in the War in Heaven). There is no real interaction between the two universes, however, unless you count some daemon characters popping up in both universes and a few magic items that have a suspicious resemblance to 40k technology. It also used to be fairly heavily implied that Sigmar (the fantasy Empire's messiah figure and founder) was one of the missing Primarchs (genetically enhanced superhuman offspring of 40k's Emperor). ''TabletopGame/Warhammer40000'' was later considered to be simply the SpiritualSuccessor where everything is an {{expy}} of the original ''Warhammer Fantasy''. Nowadays they are implied to share the warp and it's left at that, with the Sigmar is a lost Primarch angle explicitly dropped and as aforementioned the Old Ones are implied to be the same in both universes.
400* The ''TabletopGame/{{GURPS}}'' TabletopGame/InfiniteWorlds setting ties together every alternate universe they ever came up with and every licensed work ever adapted to ''GURPS'' from ''Literature/{{Uplift}}'' to ''Literature/{{Discworld}}'' to ''ComicBook/{{Hellboy}}''.
401[[/folder]]
402
403[[folder:Theme Parks]]
404* In ''Ride/JimmyNeutronsNicktoonBlast'' at Ride/UniversalStudios, all of the Nicktoons are shown as existing together in a large multiverse, with the soundstages acting as portals between their worlds.
405* In [[Ride/DisneyThemeParks Disneyland Paris]], the story of the town of Thunder Mesa (the park's version of Frontierland) ties together ''[[Ride/BigThunderMountainRailroad Big Thunder Mountain]]'' and ''[[Ride/TheHauntedMansion Phantom Manor]]'' in a tragic tale of a haunted bride
406* The Society of Explorers and Adventurers storyline at the Disney Parks grew from a backstory for Tokyo DisneySea's Fortress Explorations into a shared universe incorporating that same park's Tower of Terror, Hong Kong Disneyland's Mystic Manor, the extinct Pleasure Island and its Adventurers Club, the unbuilt Discovery Bay and its affiliated films, the Ride/JungleCruise and the Franchise/IndianaJones films (which themselves were previously connected to the Jungle Cruise by backstory for the Ride/IndianaJonesAdventure).
407[[/folder]]
408
409[[folder:Toys]]
410* ''Franchise/{{Transformers}}'':
411** Pepsi Convoy is made of sentient metal, the substance that makes up ''Advertising/{{Pepsiman}}''.
412** The "Alternity" toy line links the {{alternate universe}}s of Binaltech, Binaltech Asterisk, and the ''Kiss Players'' radio drama, based on the Japanese ''Franchise/TransformersGeneration1'', and ''Micron Densetsu'', the Japanese version of ''Anime/TransformersArmada'', and the {{Action Figure File Card}}s of the ''Film/TransformersFilmSeries'' toy line, and the game ''VideoGame/TransformersConvoyNoNazo''.
413** ''Franchise/GIJoe'' is referenced with the ''Transformers: Energon'' Snow Cat (Cyclonus) transforming into a Snow Cat vehicle, the ''Transformers Timelines'' subscription exclusive "Serpent O.R." referencing Serpentor, and the ''Transformers: Generations'' ''Combiner Wars'' Viper turning into a Cobra Rattler plane with a combined Cobra/Decepticon insignia. Exclusive sets from San Diego Comic-Con and the Transformers Collectors' Club combine both series.
414* Through commercials, ''Toys/TheTrashPack'', ''Toys/{{Shopkins}}'', and ''Toys/TheGrosseryGang'', all blind-bagged rubber figurines by Moose Toys, share a world.
415[[/folder]]
416
417[[folder:Web Animation]]
418* ''Webanimation/EverythingIsBroken'': Parts 1 – 3 were originally titled ''Luna Game In A Nutshell'' and parts 4 – 6 ''Amnesia In A Nutshell''. They were their own separated series until their titles were changed to ''HTF + Luna Game'' and ''HTF + Amnesia'', with the two being formally connected in ''HTF + Amnesia (Part 3)/HTF + Luna Game (Part 4)''.
419[[/folder]]
420
421[[folder:Webcomics]]
422* The ''Webcomic/MSPaintAdventures'' series ''Webcomic/ProblemSleuth'' ties into the two comics that predate it:
423** ''Webcomic/{{Jailbreak}}'' ties into it when Zombie Ace Dick and his whale crashed into the jail where ''Jailbreak'' was set. Indeed, a dead whale was part of an early ''Jailbreak'' puzzle, and ZAD and the Completely Sane Man were revealed to be the skeletons in one of the cells. Another Ace Dick comes across the forest where two of the jail's prisoners escaped to, as well as the tree stump where they died.
424** The events of ''Webcomic/BardQuest'' appear to end at around the same time Ace Dick plays his Game of Life session, as the swamp he trudges through during the ''Oregon Trail'' segment is shown to be ''Bard Quest'''s Swamp of Mystery. The Bard's party is stuck in the same poses as one of its last panels.
425* ''Webcomic/{{Homestuck}}'''s [[ShowWithinAShow Comic Within A Comic]] ''Webcomic/SweetBroAndHellaJeff'' predates ''Homestuck''. It was originally written as a parody of another {{webcomic}} called ''[[http://forums.penny-arcade.com/showthread.php?t=85435&page=3 Higher Technology]]'', and was written into ''Homestuck'' as a {{webcomic}} run by Dave Strider.
426** In a semi-canonical donation extra the ''Webcomic/ProblemSleuth'' characters did battle with the Midnight Crew. That gang would later become extremely plot important in ''Webcomic/{{Homestuck}}''. Even though both Problem Sleuth ''and'' the Midnight Crew exist as fictional works in the ''Homestuck'' universe -- in fact, instead of ''Homestuck'', in-universe the [[Webcomic/MsPaintAdventures adventure]] following Problem Sleuth was based on The Midnight Crew. To confuse the issue further, an Easter Egg in ''Homestuck'' implies that Problem Sleuth starred a group of the natives of Prospit, making Problem Sleuth (and technically the rest of ''MS Paint Adventures'', as seen in its own section) canonical to the ''Homestuck'' multiverse, though where it fits was never hinted at.
427*** In ''Webcomic/HomestuckBeyondCanon'', Problem Sleuth actually ends up being involved with the events of the story, helping Dad Crocker and Diamonds Droog while the former is in Midnight City.
428* In ''Webcomic/StarslipCrisis'', the character of Vore is all but explicitly stated to be in fact Vaporware from the author's previous comic, ''Webcomic/CheckerboardNightmare''. However, this can be considered only to be a partial example, since said strip's events are never mentioned in ''[[Webcomic/StarslipCrisis Starslip]]'' and Vore himself seems to have lost his memory up to that point, causing a bit of a personality change (yes, Vaporware also expressed desires to exterminate mankind, but Vore's a lot more proactive about it), so for all intents and purposes Vore can be considered a separate character. Eventually he did regain his old memories and personality, and started calling himself Vaporware again...[[spoiler:right before he was killed off for real]]. But records of the past (or Real Life, 21st Century Earth) seem to be extremely sketchy, as evidenced by the ShowWithinAShow "Concrete Universe," where covered wagons exist at the same time as cloning.
429* ''Webcomic/CrossoverWars'' and ''Webcomic/TheCrossoverlord'' established many {{webcomic}}s as part of [[TheMultiverse the same multiverse]] with rules more akin to Westphall's mind. The [[https://web.archive.org/web/20150423152459/http://www.webcomicsnation.com/crossoverlord/REALITEASE.php Realitease]] [[AllThereInTheManual page]] done by ''[[Webcomic/TheCrossoverlord Crossoverlord]]'' creators contains interesting informations about which {{webcomic}}s happens in the same universe with lists of proofs and explanations:
430** ''Webcomic/{{Fans}}'' and ''Webcomic/CollegeRoomiesFromHell'' seems to be set not only in the same universe but also share it with ''eight'' other {{webcomic}}s.
431** ''Webcomic/SomethingPositive'' shares a world with ''Webcomic/QueenOfWands'', ''Webcomic/PunchAnPie'', ''Scandal Sheet'', ''Webcomic/GirlsWithSlingshots'', ''Webcomic/QuestionableContent'', ''Webcomic/{{Shortpacked}}'', ''Webcomic/PennyAndAggie'' and ''All New Issues''. For example, the cats from [=S*P=] and GWS had a litter of hypoallergenic kittens.
432** ''Webcomic/MegaTokyo'', ''Webcomic/AppleGeeks'', ''Webcomic/CtrlAltDel'', ''Webcomic/QuestionableContent'', ''Webcomic/{{Shortpacked}}'' and ''Webcomic/DieselSweeties'' are all set in one universe. Also, one of the hypoallergenic kittens of [[Webcomic/SomethingPositive Choo-Choo Bear]] and [[Webcomic/GirlsWithSlingshots Sprinkles]] ("the fat one") was given to [[Webcomic/{{Walkyverse}} Leslie Bean]] by her lesbian lover's sister, Roz in a weird, drug deal-like handoff with [[Webcomic/SomethingPositive Davan]]. In the words of [[Webcomic/{{Walkyverse}} David Willis]], "{{Webcomics}} are so incestuous".
433** ''Webcomic/{{Mindmistress}}'' shares a universe with ''Webcomic/ClanOfTheCats'' and ''LCD'', as well as with ''Webcomic/ZebraGirl'' or her alternate counterpart.
434** ''Webcomic/{{Crossoverkill}}'' fueled the fire, not only adding more webcomics to TheMultiverse, but also with revelation that Doppleganger Gang members are all alternate reality counterparts of one another and there are members from viarous webcomics among them, including several fantasy webcomics.
435* ''Webcomic/HeroesUnite'' did it with a horrifying amount of SuperHero {{webcomic}}s, hosted on Platform/TheDuck. First it established that ''Webcomic/{{Energize}}'', ''Bombshell,'' and an alternate counterpart of ''Webcomic/{{Acrobat}}'' share an universe, and then a bunch of other superheroes joined in. Some writers even took an advantage of it to make their webcomics more popular. The creators of ''Webcomic/{{Energize}}'' and ''Webcomic/{{Dasien}}'' did a short (currently on hiatus) crossover between their characters, while the former used a new SharedUniverse to bring back his other {{webcomic}}s - ''Fearless'', Webcomic/{{SHELL}} teamed up with The Blonde Marvel and Bombshell and gets his ass kicked by one of Webcomic/HeroForce members before joining HU, and Vora, Princess Of The Skies, appeared a few times in HU before getting her own adventures. And it's all one reality in TheMultiverse of the {{webcomic}}s. Having kickstarted the whole superhero crossover thing on The Duck, ''Webcomic/HeroesUnite'' is now set in its own self-contained universe, but the crossover goodness continues in the spinoff ''Heroes Alliance'' with the characters from ''Webcomic/KarabearComicsUnlimited'' and even involved MediaNotes/JennyEverywhere and golden age characters like Madame Fatal.
436* Creator/TCampbell has done this with various webcomics he's written or co-authored, both played straight and using alternate versions of characters.
437** ''Webcomic/PennyAndAggie'', ''Webcomic/CoolCatStudio'' and ''Sketchies'' are set in the same universe. However, the SF and supernatural elements in ''Webcomic/CoolCatStudio'' are absent from the other two comics. Campbell once [[WordOfGod explained]] this on the ''P&A'' forum by stating that such elements exist on the periphery of the comics' shared universe, so not all its inhabitants experience, nor are even aware of, such things.
438** This is in contrast to the ''Webcomic/{{Fans}}'' universe (and its alternate versions of ''P&A'''s characters), where, particularly after the {{Revival}}, paranormal occurrences are so frequent and prominent that the entire world is aware of them. Also, alternate versions of characters from ''Webcomic/PennyAndAggie'' and ''Webcomic/{{Fans}}'' appear in each other's universes every so often.
439* Barry T. Smith's ''Webcomic/InkTank'' appeared to be in an entirely new universe from the previous strips...until a story arc which ended with the AuthorAvatar having a nervous breakdown was resolved by Dante from ''Angst Technology'' turning up and treating him to a coffee.
440* Artist Creator/UrsulaVernon's ''Webcomic/{{Digger}}'', an anthro adventure about a mildly cynical wombat and a statue of the god Ganesh, has this if you start reading her other work. An awful lot of everything she's done seems to have characters in common with the Gearworld, her vaguely-steampunk clockwork-labyrinth art-and-fiction setting. It's only vaguely hinted at in ''Digger'' itself.
441* ''Webcomic/SugarBits'' might have done it when one of the villains summoned Red [[spoiler:and TheBigBadWolf]] from ''Webcomic/EverAfter'' to fight protagonists. However, given the nature of the ''Sugar Bits'' world and [[WordOfGod Bleedman's own words]], those two comics may or may not share an universe and this will remain unresolved until Endling, creator of ''Ever After'', will confirm it.
442* Shaenon Garrity's ''Webcomic/{{Narbonic}}'' and ''Webcomic/SkinHorse'' were officially confirmed to take place in the same continuity with the introduction of [[spoiler:Artie Narbon]] to Tip Wilkin. Garrity had previously revealed in ''Webcomic/{{Narbonic}} Director's Cut'' that the main ''Narbonic'' characters, Dave, Helen, and Mell, came from three different comics she had drawn in high school and college. Mell also gets her own SpinoffBabies comic, ''Li'l Mell'', and a character introduced in that comic has now shown up in ''Webcomic/SkinHorse''. Garrity's lesser-known ''Webcomic/{{Smithson}}'' may fit into the same continuity as well; minor character Queensbury Joe appears to be the older version of Homeschool Joe from ''Li'l Mell''.
443** Mel has also appeared twice in ''Webcomic/EverydayHeroes'' - once in a brief flashback where Mr. Mighty thwarts one of Helen's capers and again where she appears as Dr. Unpleasant's lawyer.
444* Eli Parker created several different web projects, including ''Too Far'' (a comedy space opera webcomic), ''Webcomic/PowerupComics'' (a StealthParody of TwoGamersOnACouch webcomics), and ''Website/TheseWebComicsAreSoBad'' (another StealthParody, this time of webcomic review blogs). Then Parker created ''Webcomic/UnwindersTallComics'', which included cameos from all of the above, establishing that they (or at least their fictitious authors) all exist in some sort of continuity.
445* There was earlier hints about ''Webcomic/BobAndGeorge'' and its fancomics/subcomics taking place in the same multiverse. Ridiculous amount of cameos got finally an explanation, when Rick O'Shay and Chick-Bot appeared in the main comic to tell the [[VoidBetweenTheWorlds true nature]] of White Space. It was a demi-plane that connected all the universes together. It was later abused by [[spoiler:[[GondorCallsForAid sending all the Mega Mans and other characters into one universe, to fight Bob]]]].
446* ''Webcomic/{{Glorianna}}'' and Sparky of ''Webcomic/LadySpectraAndSparky'' shared an adventure when Glorianna was briefly transported to the 21st century (while Lady Spectra ended up in Glorianna's era).
447* Anna/Susan from ''Webcomic/{{Sire}}'' showed up in ''Webcomic/EvilPlan'', where it was revealed that they are the cousin of HeroAntagonist Kevin Kolton. Characters from Evil Plan and Mortifer have shown up in each others' works, and Agent/Andrew Cross shows up in both Evil Plan and ''Webcomic/{{Morphe}}''.
448* In ''Webcomic/{{Spinnerette}}'' there are a few arcs centered around Hell and its inhabitants, where we meet Minerva's friends Tom, Kia, Lucretia, and Guinness, all hailing from ''Webcomic/{{Krakow}}''. Whether the ''Webcomic/{{Marilith}}'' duology and ''Charliehorse'' are also part of TheVerse is unknown.
449* [[PlayingWithATrope Played with]] in the various AlternateUniverse comics for ''Webcomic/DarthsAndDroids'', where sources that aren't extensive franchises are sometimes "planned" to be continued with other works (either thematic or from the same creator) according to their [=FAQs=]. Of course, all of these comics are one-shots, and how these instances of canon welding could actually play out is left to the readers' imaginations. Now for the complete list of proposed merged canons...
450** ''[[http://www.darthsanddroids.net/notesandnazis/faq.html Notes and Nazis]]'' (based on ''Theatre/TheSoundOfMusic''):
451--->'''Will you do another movie after this?'''\
452We're certainly thinking about it. We think the next logical candidate is ''Film/MyFairLady''.
453** ''[[http://www.darthsanddroids.net/sandalsandspartans/faq.html Sandals & Spartans]]'' (based on ''Film/ThreeHundred''):
454--->'''Are you going to do something after ''300''?'''\
455We plan to go on and do other films based on classical Greece. Creator/{{Disney}}'s ''WesternAnimation/{{Hercules}}'' comes to mind as an obvious sequel.\
456'''What about other parts of the classical world?'''\
457Greek legend is so rich that we don't think we need to bring in anything else. I mean, just look at ''Series/{{Xena|WarriorPrincess}}''.
458** ''[[http://www.darthsanddroids.net/trenchcoats/faq.html Trenchcoats & Turncoats]]'' (based on ''Film/{{Casablanca}}''):
459--->'''Will you continue with another movie after ''Casablanca''?'''\
460We plan to do all of Creator/HumphreyBogart's movies, as though they were a single connected campaign following the same characters. Next will be ''Film/{{The Maltese Falcon|1941}}''.
461** ''[[http://www.darthsanddroids.net/heists/faq.html Heists & Hypnagogic Hallucinations]]'' (based on ''Film/{{Inception}}''):
462--->'''What are you going to do when you finish ''Inception''?'''\
463We plan to do go on to other Creator/ChristopherNolan films. ''Film/{{Memento}}'' and ''Film/ThePrestige'' seem like logical choices.
464** ''[[http://www.darthsanddroids.net/chocolates/faq.html Chocolates & Chumps]]'' (based on ''Film/WillyWonkaAndTheChocolateFactory''):
465--->'''Are you going to do any other Creator/RoaldDahl works?'''\
466Yes! We're going to do some of his other screenplays. We plan to make a trilogy by scripting ''Film/ChittyChittyBangBang'' and then ''Film/YouOnlyLiveTwice'' as sequels to ''Willy Wonka and the Chocolate Factory''.
467** ''[[http://www.darthsanddroids.net/hellenes/faq.html Hellenes & Harryhausens]]'' (based on ''Film/JasonAndTheArgonauts''):
468--->'''Are you planning to do any other [[Creator/RayHarryhausen Harryhausen]] films?'''\
469Yep. We've planned a story arc through ''Film/The7thVoyageOfSinbad'' and the [[Film/TheGoldenVoyageOfSinbad two]] [[Film/SinbadAndTheEyeOfTheTiger other]] Sinbad movies, climaxing with ''Film/{{Clash of the Titans|1981}}''!
470** ''[[http://www.darthsanddroids.net/marmosets/faq.html Marmosets & Meerkats]]'' (based on based on Creator/DavidAttenborough's ''The Life of Mammals''):
471--->'''Are you planning to do all of David Attenborough's nature documentaries?'''\
472Yep. We've planned a story arc through all current documentaries from ''Life on Earth'' through to ''Conquest of the Skies''!
473** ''[[http://www.darthsanddroids.net/elliots/faq.html Elliotts & Extraterrestrials]]'' (based on ''Film/ETTheExtraTerrestrial''):
474--->'''Are you planning to do any further movies?'''\
475Yep. We've planned a story arc involving aliens which will continue with other Creator/StevenSpielberg films: ''Film/CloseEncountersOfTheThirdKind'' and then ''Film/{{War of the Worlds|2005}}''!
476** ''[[http://www.darthsanddroids.net/moonshots/faq.html Moonshots & Mishaps]]'' (based on ''Film/Apollo13''):
477--->'''Are you planning to do any further movies?'''\
478Yep. We've planned a story arc involving all the other films directed by Creator/RonHoward and starring Creator/TomHanks: ''Film/{{Splash}}'', followed by ''Literature/TheDaVinciCode'', ''Literature/AngelsAndDemons'', and ''Literature/{{Inferno|2013}}''!
479** ''[[http://www.darthsanddroids.net/pacmans/faq.html Pac-Mans & Power Pellets]]'' (based on ''VideoGame/PacMan''):
480--->'''Are you planning to do any further video games?'''\
481Yep. We've planned a story arc involving other classic games such as: ''VideoGame/SpaceInvaders'', ''VideoGame/{{Asteroids}}'', ''VideoGame/DonkeyKong'', and ''VideoGame/{{Tetris}}''!
482** ''[[http://www.darthsanddroids.net/drivers/faq.html Drivers & Dubble-yas]]'' (based on ''Film/ItsAMadMadMadMadWorld''):
483--->'''Are you planning to do any other Creator/StanleyKramer films?'''\
484Yep. We've planned a story arc involving several of his other films, including: ''Literature/OnTheBeach'', ''Film/JudgmentAtNuremberg'', and ''Film/GuessWhosComingToDinner''!
485* Two of Doctor Glasgow's previous comics were folded into ''Webcomic/EnnuiGo'':
486** Izzy's clone Kirsty and her husband Lucian are explicitly stated by WordOfGod to be the parents of the protagonist of his previous comic, ''Webcomic/RainbowSkiesForever'', but WordOfGod also states that ''Ennui GO!'' is an AlternateUniverse.
487** Max, Min, Adelie, and Bella come from another old comic called ''Max and Min''. [[https://www.deviantart.com/doctorglasgow/art/Max-and-Min-043-357681012 One of its strips]] would even be recycled as "Avast", suggesting that it actually is canon rather than merely being an AlternateUniverse.
488* Characters from [=SgtCrisis=]' earlier projects make appearances in their comic, ''Webcomic/BigBreak2019''. For example, two characters, Brett and Mira, were part of a''Franchise/{{Gundam}}'' fan-project called "Gundam Attrition", where the former was a pilot and the latter an engineer. They were also a couple in that story. In ''Big Break'', they both have been given more mundane jobs (i.e. Brett now owns an indoor pool business while Mira owns a gym.) and, while originally stated to be a married couple, the creators retconned their status as never having met in the comic proper.
489* Harry Bogosian's [[spoiler:''Webcomic/DemonsMirror'' and ''Webcomic/ABetterPlace'']] are welded together in the former's ongoing [[https://demonsmirror.com/ rerelease.]] The rerelease's [[TheRant captions,]] which are its new content, are centered around firmly welding the two continuities together. It's unlikely that the latter was originally intended as a proper StealthPrequel, because the captions do a ''lot'' of welding, and it's all ''still'' a little hard to buy.
490* A arc of ''Webcomic/PS238'' revealed that the author's previous work, ''Webcomic/{{Nodwick}}'' was actually set in [=PS238's=] distant past when time travel results in the protagonists from both settings encountering each other.
491[[/folder]]
492
493[[folder:Web Original]]
494* The (In)Famous Creator/DavidGonterman, Creator/EdWood of the World Wide Web and the Internet's Most Dangerous Cartoonist; reuses characters, concepts and names so often that it more or less seems that every single thing he's ever written or drawn are all set in the same vague [[TheMultiverse universe/multiverse]]. This may be partially intentional, but, well...
495* Franchise/TheFearMythos incorporates Franchise/TheSlenderManMythos into their canon, as well as the Black Dog from folklores of the British Isles, and later incorporated the Smiling Man from Blog/TheJeanetteExperience as a CanonImmigrant. The Franchise/CthulhuMythos is a part of it too, with the blog [[http://mephirevolution.blogspot.com/ Mephi]], having many of Lovecraft's creatures being a major part of the story. The Fear Mythos and Sleeper Mythos are also an example of this, while the Fear Mythos and WebOriginal/TheArknMythos are an inversion (depending on who you ask, as the exact history of the latter is disputed and unclear). The Fear Mythos as a whole was created from several separate [[Franchise/TheSlenderManMythos Slender Man Mythos]] spinoffs, then separated into countless canons as the authors of each story see fit.
496[[/folder]]
497
498[[folder:Web Videos]]
499* Website/ChannelAwesome likes this trope, finally creating an official merging of every TGWTG-involved character during the huge anniversary brawl, and again during ''WebVideo/{{Kickassia}}'', ''WebVideo/SuburbanKnights'' and ''WebVideo/ToBoldlyFlee'', plus the millions of crossovers between producers. WebVideo/TheNostalgiaCritic took this a step further and incorporated Doug himself into the mix, crossing over with his vlogs.
500* The ''WebVideo/DreamSMP'' has done this on multiple occasions, most notably when Jschlatt confirmed that the older server ''WebVideo/SMPLive'' is at least ''partially'' canon, and when Niki Nihachu confirmed that her character travels between Dream SMP and the otherwise unrelated ''WebVideo/BearSMP''. Seapeekay has also established himself as a DimensionalTraveler capable of visiting the world of the WebVideo/MinecraftChampionship.
501* A [=YouTuber=] named [=PopularMMOs=] has a series called ''The Crafting Dead''. In the third season, he puts Dr. Trayaurus of [[LetsPlay/DanTDM TheDiamondMinecart]] fame into the series. Before him, he puts Captain Cookie, from Epic Proportions, another series by the [=YouTuber=], became part of the story.
502* ''WebVideo/EmpiresSMP'' plays with this heavily as part of the Minecraft Multiverse:
503** In Season 2, [[spoiler:Oli]] canonizes the ''WebVideo/AfterlifeSMP'' to the events of Season 2 as his character's origin story. [[spoiler:Sausage's]] post-Season 1 ending, revealed in Season 2, also canonizes the ALSMP to the timeline.
504** The ''WebVideo/LifeSMP'' is canon to ''Empires'' on multiple levels, via PastLifeMemories of the WebVideo/ThirdLifeSMP leading to a ReincarnationRomance in Season 1, and shared memories of the WebVideo/DoubleLifeSMP being present in the character dynamics of Season 2.
505** The ending of Shelby's POV of Season 2 ties directly into [[spoiler:the events of the WebVideo/WitchCraftSMP, which then ties into ''One Life SMP'' Season 3 via a cursory mention in the finale]], while Oli's ending [[spoiler:brings us to ''Crazy Craft'']].
506* This is a frequent occurrence for ''WebVideo/SMPLive'' retroactively, due to the creators moving on to new projects over the years and tending to enjoy connecting them.
507** Schlatt retroactively confirms that [=SMPLive=] is at least ''partially'' canon to the ''WebVideo/DreamSMP'' in an episode of the spin-off ''Tales from the SMP''. This indirectly connects it to ''WebVideo/BearSMP'' as well, and WebVideo/MinecraftChampionship, both of which are canonical to ''Dream SMP''.
508** It is also implied at some points during ''WebVideo/EpicSMP'' Season 2 that it's canon to that server as well.
509** In ''WebVideo/SMPEarth'', it is noted that Wilbur's character wants to reform from his "dirty crime boy" ways on [=SMPLive=], adding yet another layer.
510[[/folder]]
511
512[[folder:Western Animation]]
513* Creator/{{Disney}}, if you can believe it, did this.
514** ''WesternAnimation/LiloAndStitchTheSeries'' had {{Crossover}}s with ''WesternAnimation/KimPossible'', ''WesternAnimation/TheProudFamily'', ''WesternAnimation/{{Recess}}'', and ''WesternAnimation/AmericanDragonJakeLong''. The Franchise/DisneyChannelAnimatedUniverse was codified by these crossovers.
515** ''Recess''' Ashley Spinelli appeared on ''WesternAnimation/{{Fillmore}}'', adding that show to the universe.
516** There was also [[Recap/HerculesTheAnimatedSeriesS1E44HerculesAndTheArabianNight an episode]] of ''WesternAnimation/HerculesTheAnimatedSeries'' in which Jafar and Hades cut a deal to eliminate each other's enemies, resulting in an ''WesternAnimation/AladdinTheSeries'' crossover.
517** While ''WesternAnimation/DuckTales1987'' and ''WesternAnimation/DarkwingDuck'' were obviously (to the fans, despite Tad Stone's statement that they were supposed to be separate universes) part of the same universe what with both shows having Launchpad [=McQuack=], a ''Magazine/DisneyAdventures'' story known as ''ComicBook/TheLegendOfTheChaosGod'' establishes ''WesternAnimation/GoofTroop'', ''WesternAnimation/TaleSpin'', and ''WesternAnimation/ChipNDaleRescueRangers'' are part of the same universe as well.
518** ''WesternAnimation/{{Gargoyles}}'' WordOfGod, Creator/GregWeisman, says it shares its universe with ''WesternAnimation/AtlantisTheLostEmpire'' — or at least, each 'verse includes a BroadStrokes version of the other franchise. (This occurred when Weisman worked on an ''Atlantis'' TV {{spinoff}} — but the series, including the ''Gargoyles'' CrossThrough episode, got canned when the movie bombed.)
519** ''WesternAnimation/TheLegendOfTarzan'' features the villain Queen La; a native of Atlantis in the original Tarzan novels, the series gives her a character design that strongly implies that she is indeed an Atlantean, and that ''WesternAnimation/Tarzan1999'' shares a universe with ''WesternAnimation/AtlantisTheLostEmpire''.
520** The ''Franchise/KingdomHearts'' series of video games has most major Disney worlds—or rather, explicitly AU versions of them—existing in a larger multiverse.
521** ''WesternAnimation/SofiaTheFirst'' is connected to the ''Franchise/DisneyAnimatedCanon'' due to appearances from Disney Princesses like Cinderella and Mulan, and even a bit of Pixar with Merida's appearances. Plus, characters like Aurora's fairies and Merlin also appear.
522** The ''WesternAnimation/DuckTales2017'' reboot is a new setting in which the pilot episode establishes that [[WesternAnimation/TaleSpin Cape Suzette]] and [[WesternAnimation/GoofTroop Spoonerville]] exist.
523*** ''Darkwing Duck'' exists as a ShowWithinAShow but in later episodes, [[{{Defictionalization}} a fan of the series is inspired to adopt the identity]].
524*** ''From The Confidential Casefiles Of Agent 22!'' establishes that ''WesternAnimation/AdventuresOfTheGummiBears'' took place somewhere in the Duck universe's past, as well as establishing that both [[WesternAnimation/DarkwingDuck F.O.W.L. and S.H.U.S.H.]] are actual organizations.
525*** ''Quack Pack!'' introduces Goofy, who then goes on to show pictures of Max, P.J., and Roxanne, establishing ''WesternAnimation/GoofTroop'' and the [[WesternAnimation/AGoofyMovie two]] [[WesternAnimation/AnExtremelyGoofyMovie movies]] that followed as part of the continuity as well.
526*** Later episodes also establish ''Chip 'n Dale: Rescue Rangers'', ''WesternAnimation/{{Bonkers}}'', and ''The Three Caballeros'' in this continuity, feature on-screen appearances of [[WesternAnimation/TaleSpin Cape Suzette, Don Karnage, and the grown-up versions of Kit Cloudkicker and Molly Cunningham]], include the Phantom Blot from ''ComicBook/MickeyMouseComicUniverse'', reference ''WesternAnimation/QuackPack'' in one episode, and add blatant, lawyer-friendly {{expies}} of characters from other Disney shows, including ''Gargoyles'', ''WesternAnimation/PhineasAndFerb'', and ''WesternAnimation/TheWuzzles'', with even a reference to the above ''The Legend Of The Chaos God'' crossover!
527** Both Creator/DanaTerrace and Creator/AlexHirsch have long implied that ''WesternAnimation/TheOwlHouse'' and ''WesternAnimation/GravityFalls'' share a universe. As of "Yesterday's Lie" this seems to be confirmed, as Eda is mentioned as using "Marilyn" as an alias in the Human World, the same name as Grunkle Stan's purported ex-wife, who otherwise matches Eda's description to a T.
528*** ''The Owl House'' also seems to be connected to ''WesternAnimation/{{Amphibia}}'' given how Terrace and Creator/MattBraly include easter eggs in their shows. This gains possible confirmation in the latter series episode "If You Give a Frog a Cookie", since Dr. Frakes' pictures of other dimensions includes a shot of the former series' titular location, albeit blurred. It was outright confirmed when the season 2 finale of ''Owl House'' displayed a news article about the events of ''Amphibia'' on a smart device with a partially obscured picture of Anne.
529*** On another note, ''Amphibia'' and ''Gravity Falls'' are also in the same boat since "Wax Museum" is basically a tribute to the latter series and includes counterparts of Stan and Soos. There's even a cryptogram that when translated says, "There is a Soos in every dimension".
530* ''Creator/HannaBarbera'' hit this trope super heavy to the point regardless of ContinuitySnarl most people assume HB as a whole has a SharedUniverse.
531** It can be said while there had been years of ShoutOut from FunnyAnimal to other FunnyAnimal, ''Yogi's Birthday Party'' was an end to ''WesternAnimation/YogiBear'' that not only featured characters from his own show and supporting shows but also from ''WesternAnimation/TheHuckleberryHoundShow'' and ''WesternAnimation/QuickDrawMcGraw''.
532** There's a minor supporting character Bigelow Mouse had appeared on ''WesternAnimation/{{Snagglepuss}}'', ''WesternAnimation/YakkyDoodle'' and ''WesternAnimation/LoopyDeLoop''.
533** When ''WesternAnimation/TheFlintstones'' came along they got in on the fun too. Yogi even showed up in person in one episode (despite being name dropped as a tv show before). When the Flintstones went to the then-present Officer Dibble from ''WesternAnimation/TopCat'' could be seen and when they went into the future it used the same design from ''WesternAnimation/TheJetsons''. The two families finally meet in the movie fittingly called ''WesternAnimation/TheJetsonsMeetTheFlintstones''.
534** Over in the action world the original ''WesternAnimation/SpaceGhost'' cartoon ended with TimeTravel and dimensional travel in the last six original episodes, became part of the same universe of, ''WesternAnimation/TheHerculoids'', ''WesternAnimation/{{Shazzan}}'', WesternAnimation/MightyMightor, and ''[[WesternAnimation/MobyDickHannaBarbera Moby Dick]]''
535** Then in the 1970s came along and ''WesternAnimation/YogisArkLark'' brought a good chunk of the FunnyAnimal characters together into one story including the ones from Top Cat. For good measure Sawtooth from ''WesternAnimation/WackyRaces'' was there and they ran into [[WesternAnimation/MobyDickHannaBarbera Moby Dick]]. This special was followed by ''WesternAnimation/YogisGang''.
536** When ''WesternAnimation/TheNewScoobyDooMovies'' came along, ''Franchise/ScoobyDoo'' crossed over with multiple other HB shows such as ''WesternAnimation/TheHarlemGlobetrotters'', ''WesternAnimation/{{Jeannie}}'', ''WesternAnimation/JosieAndThePussycats'' and ''WesternAnimation/SpeedBuggy''. Although some had referenced each other before. Also Scooby met ''Creator/LaurelAndHardy'' who had a previous HB AnimatedAdaptation, the same voice actors from that show returned but they did give them an ArtShift to match the Scooby look more than the Yogi look.
537** Both ''Series/TheAddamsFamily'' and ''The Three Stooges'' (as WesternAnimation/TheRobonicStooges) got their own cartoon series following this series.
538** When Scooby Doo got another show that aired in the same block as ''WesternAnimation/DynomuttDogWonder'', the Scooby gang showed up in three direct episodes of Dynomutt's show. Mumbly did likewise at the end of another episode. Even further in one episode where a singer sings the theme song from ''WesternAnimation/{{Jabberjaw}}''.
539** In the last episode of ''WesternAnimation/HongKongPhooey'' we first meet Posse Impossible, who later got their own spinoff series on ''WesternAnimation/CBBears''.
540** Then came ''WesternAnimation/LaffALympics'' that established all those FunnyAnimal characters and those YouMeddlingKids characters could compete in crossover Olympics. ''WesternAnimation/CaptainCavemanAndTheTeenAngels'' and ''WesternAnimation/TheGreatGrapeApe'' were both newer and connected here for the first time. Guest appearances by Fred Flintstone and Barney Rubble as well as Jabberjaw helped seal that neither CelebrityParadox nor TimeyWimeyBall could affect this trope.
541** Then came ''WesternAnimation/YogisSpaceRace''. Yogi, Huck and Jabberjaw were back now crossing over with new characters such as the other Galaxy Goofups and Buford and the Galloping Ghost. This series also provided cameos from the usual Fred and Barney, Grape Ape and Quick Draw. And the not as usual, ''WesternAnimation/FrankensteinJr'', ''WesternAnimation/JanaOfTheJungle'' and the HB version of Godzilla from ''WesternAnimation/TheGodzillaPowerHour''.
542** There was also ''WesternAnimation/CaspersFirstChristmas'' which used Casper the Friendly Ghost and Hairy Scary from their previous Casper series ''WesternAnimation/CasperAndTheAngels'' meeting up with Yogi and other FunnyAnimal characters.
543** Then WesternAnimation/TheFlintstoneComedyShow came along as tied Captain Caveman into having been alive in Bedrock before being frozen and revealed The New Shmoo was there too or at least one of his ancestors was.
544** ''WesternAnimation/SpaceStars'' loved to play with crossovers bringing back Space Ghost and the Herculoids but also letting them meet up with new characters the Teen Force and Astro from the Jetsons. In one segment there's even a statute of Fred Flintstone in a museum for good measure.
545* In the ''WesternAnimation/SouthPark'' episode "Super Best Friends", there is a brief scene of the cast of ''Series/ThatsMyBush'' in the White House, indicating that the two series (both created by Matt Stone and Trey Parker) take place in the same universe (which is particularly silly, since ''That's My Bush!'' is a live-action show). Another Creator/ComedyCentral show, ''WesternAnimation/DrKatzProfessionalTherapist'', was also included in a brief bit from a season 2 episode with Mr. Garrison going for therapy (Dr. Katz ultimately gets killed by the [[ItMakesSenseInContext giant firework snake]]).
546* There were reportedly plans to weld the canons of ''WesternAnimation/ExoSquad'' and ''Anime/{{Robotech}}'' back when the former was produced. Considering that their primary motivation seemed to be that both shows were MerchandiseDriven, your mileage may vary on whether it's a good or bad thing that this never happened. It went beyond just planning; there were figures of Robotech mecha sold in ''WesternAnimation/ExoSquad''-branded packaging.
547* In a crossover episode, Stan and Bullock from ''WesternAnimation/AmericanDad'' try to stop ''WesternAnimation/FamilyGuy'''s Stewie plan to take over the world, with Stewie mistaking [[LampshadeHanging Stan for Joe]]. Of course, [[spoiler:this takes place in a virtual reality simulation]], so it's debatable whether it's canonical or not. There have been a few other smaller cameos.
548** There is a deliberate lack of crossovers between ''Family Guy'' and ''American Dad!'', but they're considered to be part of the same universe. However at the end of the ''American Dad!'' episode "Hurricane!", [[spoiler:the houses of Cleveland and Peter end up on the sides of Stan's house, resulting in them going into a stand-off that ends with Francine accidentally being shot by Stan]]. [[StatusQuoIsGod It's never addressed in later episodes of any of the shows]].
549** Thanks to the ''WesternAnimation/FamilyGuy'' episode "[[Recap/FamilyGuyS13E1TheSimpsonsGuy The Simpsons Guy]]", it can now be said that ''WesternAnimation/TheSimpsons'' takes place in the same universe as the aforementioned Creator/SethMacFarlane cartoons.
550* ''WesternAnimation/ThunderCats2011'', as of the episode "Legacy" features new versions of characters from ''WesternAnimation/SilverHawks'' and ''[[WesternAnimation/TheComicStrip TigerSharks]]'', all of which were action cartoon shows produced by [[Creator/RankinBassProductions Rankin/Bass]] in the '80s, sharing the same art style, writers, and voice actors. While the shows were incredibly similar and could easily be mistaken for being part of the same universe, it's only official now after twenty plus years.
551* ''WesternAnimation/TheVentureBrothers'' attempted to weld itself onto the ''WesternAnimation/JonnyQuest'' canon, even going as far as to feature Race Bannon as a character in one episode, but after Warner Bros. withheld the characters in anticipation of an unreleased live-action movie, all references to Jonny Quest were quietly replaced with LawyerFriendlyCameo versions.
552* Creator/RankinBassProductions is also famous for its adaptations of Christmas stories, and eventually welded many of them together in a movie called ''WesternAnimation/RudolphAndFrostysChristmasInJuly.'' Naturally there were a lot of elements that did not quite fit together -- SantaClaus, for example, had a subtly different appearance and personality in each previous special--so decisions and adjustments were made. Likewise some scenes from Rudolph and Frosty's lives were shown that differed from their own specials, but [[BroadStrokes kept the basic facts the same]].
553* Originally ''WesternAnimation/StaticShock'' referenced Franchise/{{Superman}} as a fictional character but this was {{retcon}}ned allowing the show to be welded into the Franchise/DCAnimatedUniverse.
554* ''WesternAnimation/TheCritic''[='=]s Jay Sherman once showed up to judge the ''WesternAnimation/TheSimpsons''[='=] Springfield Film Festival, though Matt Groening was so against the idea that he took his name off the opening credits for that episode. The welding is a bit awkward, since it's established that ''The Simpsons'' are a cartoon in Jay's world, but he appears twice more in Springfield.
555-->'''Jay:''' ''[in a straightjacket]'' It stinks! It stinks! It stinks!\
556'''Springfield psychiatrist:''' Yes, Mr. Sherman. Everything stinks.
557* ''WesternAnimation/TheTransformers'':
558** In the '80s, it was broadly hinted that the original cartoon shared a universe with the ''WesternAnimation/GIJoeARealAmericanHero'' cartoon, and not-quite-as-broadly that the same was true for ''WesternAnimation/{{Jem}}'' and ''WesternAnimation/{{Inhumanoids}}''[[note]]''[[WesternAnimation/MyLittlePonyAndFriends My Little Pony]]'' was close to being the same universe with a couple scenes scrapped from ''WesternAnimation/MyLittlePonyTheMovie1986''[[/note]]. This has been taken much further in the 21st century, where not only were the previous hints confirmed, but now ''every'' Hasbro cartoon from the time period has been stated to be part of the same universe, and every other Hasbro property exists within the Transformers multiverse.
559** Thanks to Hasbro acquiring the IP to the characters '''[[WesternAnimation/ChallengeOfTheGobots the Go-Bots]]''', one of the ''Transformers'' franchise's most infamous rivals, are now part of the TF multiverse. Further, the official fan club's long-running comic storyline and some new toys mean that Hasbro has retconned the Go-Bots into being just another ''Transformers'' show, with the Go-Bots having their own universal designation (something reserved for actual TF series) and Gobotron being retroactively declared as an alternate form of Primus.
560* Space Ghost has become a recurring character in the Creator/AdultSwim Universe currently consisting of ''WesternAnimation/SpaceGhostCoastToCoast'', ''WesternAnimation/AquaTeenHungerForce'', ''WesternAnimation/TheBrakShow'', ''WesternAnimation/PerfectHairForever'', ''WesternAnimation/HarveyBirdmanAttorneyAtLaw'', ''WesternAnimation/TwelveOunceMouse'', and possibly ''WesternAnimation/Sealab2021''.
561* ''WesternAnimation/StevenUniverse'' crossed over with ''WesternAnimation/UncleGrandpa''; UG himself declared it to be a non-canonical, April Fools' ep. And at the end, he pulls out a checklist revealing he's visited ''[[WesternAnimation/DextersLaboratory Dexter and Dee-Dee]]'', [[Franchise/ThePowerpuffGirls Blossom, Bubbles and Buttercup]], [[WesternAnimation/EdEddnEddy the Eds]], [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Billy and Mandy]], [[WesternAnimation/FostersHomeForImaginaryFriends Mac]], [[WesternAnimation/TheLifeAndTimesOfJuniperLee Juniper Lee]], the ''WesternAnimation/SWATKats'' (!), [[WesternAnimation/TheMarvelousMisadventuresOfFlapjack Flapjack]], and [[WesternAnimation/AdventureTime Finn]], with ''WesternAnimation/{{Clarence}}'' next up. (''SWAT Kats'' being included was kinda surprising, considering it debuted in 1993, before the Cartoon Cartoons, and wasn't originally for CN, but rather for sister station Creator/{{TBS}} back when they aired cartoons.)
562* WordOfGod places ''WesternAnimation/TheAvengersEarthsMightiestHeroes'', ''WesternAnimation/WolverineAndTheXMen2009'', ''WesternAnimation/HulkVS'', and ''WesternAnimation/ThorTalesOfAsgard'' in the same universe. We have [[spoiler:Wolverine appearing as a member of both the Howling Commandos and New Avengers and the Mutant Response Division imprisoning Whirlwind]], as well as one ''Wolverine'' episode being a direct sequel to ''WesternAnimation/HulkVs''. (However, contradictions do exist, mainly in the portrayal of the Hulk and which eye Fury's eyepatch is on.)
563** WordOfGod has also said that the X-Men would have shown up in Season Three [[WhatCouldHaveBeen had it not been cancelled]].
564** The show's [[AllThereInTheManual tie-in comic]] (which was written by the show's creators) blatantly contradicted this, showing versions of ComicBook/ScarletWitch and ComicBook/{{Quicksilver}} that were nothing at all like their ''WATXM'' counterparts.
565* In the ''WesternAnimation/TeenageMutantNinjaTurtles2012'' episode "Trans-Dimensional Turtles", it's revealed that the [[WesternAnimation/TeenageMutantNinjaTurtles1987 87 Krang]] is actually part of the Kraang gathering. He was kicked out for being an idiot. When Krang and the Sub-Prime meet, Krang is referred to as the Sub-Prime's cousin.
566* ''WesternAnimation/TheSimpsons'' and ''WesternAnimation/{{Futurama}}'' started out as MutuallyFictional, but then "[[Recap/TheSimpsonsS26E6Simpsorama Simpsorama]]" happened. The later ''Simpsons'' episode "[[Recap/TheSimpsonsS27E2CueDetective Cue Detective]]" establishes that Bender is still on TheSlowPath in the Simpsons' basement. Coincidentally, ''Simpsons'' episodes "[[Recap/TheSimpsonsS23E9HolidaysOfFuturePassed Holidays of Future Passed]]" and "[[Recap/TheSimpsonsS25E18DaysOfFutureFuture Days of Future Future]]" exhibited more traits of ''Futurama''[='=]s depiction of the future (e.g. aliens living with humans on Earth) than in previous episodes depicting the Simpsons' lives in the future. There's still no explanation behind [[AmazingTechnicolorPopulation the differences in skin colors between shows]], however.
567** Years before the "Simpsorama" episode, the [[ComicBook/TheSimpsons Simpsons comics]] already had a crossover with the cast of ''Futurama'', ''ComicBook/TheSimpsonsFuturamaCrossoverCrisis'' and a sequel comic. However, since the comics seem to be their own weird little conitnuity, the later TV crossover completly ignores that story line.
568** A blink-and-you-miss-it frame in ''Futurama''[='=]s season 8 ChristmasEpisode "[[Recap/FuturamaS8E6IKnowWhatYouDidNextXmas I Know What You Did Next Xmas]]" featuring Bean, Elfo ans Luci from ''WesternAnimation/{{Disenchantment}}'', a third animated series from the mind of Creator/MattGroening, seems to confirm the latter show takes place in the former show's future.
569* Owing to how ''WesternAnimation/RickAndMorty'' deals with infinite timelines and infinite universes, theoretically ''any'' work could exist in the same canon. A few works have taken advantage of this for a good [[TheCameo cameo]]:
570** There's more than a few cameos in ''Rick And Morty'' that show it takes place in the same continuity as ''WesternAnimation/GravityFalls''. Rick and Morty has the mug and notepad Grunkle Stan lost in a portal popping out of one of Rick's, Bill Cipher popping up on a computer screen, and Bill's ally 8-Ball dead in the Detoxifier, while ''Literature/GravityFallsJournal3'' contained a silhouette of a Plumbus and a Zigerionon, as well as an encoded message left by Rick.
571** A couch gag in ''WesternAnimation/TheSimpsons'' featured Rick and Morty burst into The Simpson's home, thus proving that they exist in the same ''multiverse''. It culminates in an OverlyLongGag involving the death of The Simpsons and them being brought back, very poorly, via cloning while Rick robs their house.
572--->'''Bart:''' No more guest animators, man!!!
573** Even ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' isn't safe from these two. [[https://trixiebooru.org/images/1708387 Pony Rick and Pony Morty]] appear in the background of ''Grannies Gone Wild'' where, unlike their cameo in ''The Simpsons'', they thankfully didn't kill anyone this time. We hope.
574** Rick and Morty have a cameo in ''Film/SpaceJamANewLegacy'' which is proven canon to the show's multiverse in season 7, when Rick lists this two as part of dead alternate selfs.
575* WordOfGod stated that ''WesternAnimation/MiloMurphysLaw'' was in the same universe as ''WesternAnimation/PhineasAndFerb'' from the beginning, but the shows have become more closely joined as the former goes on, with the eventual reveal that [[spoiler:Doofensmirtz is destined to invent the TimeTravel technology that Cavendish and Dakota use]]. ''WesternAnimation/HamsterAndGretel'' was also confirmed via Word of God to take place in the same continuity. So far, this is only confirmed by a quick non-speaking [[TheCameo cameo]] by Doofensmirtz in the episode "Strawberry Fest Forever".
576* ''WesternAnimation/Ben10'' has one with ''WesternAnimation/TheSecretSaturdays'' with the ''WesternAnimation/Ben10Omniverse'' episode titled TGIS where it was shown that Ben and Zak happen to be the same age. Previous hints had been dropped due to references made (mostly on Secret Saturdays) such as some of Ben's villains appearing in a criminal database in Secret Saturdays or Dr. Beaman frequently using the expression "Great Galvan Prime". Another episode of ''Ommiverse'' has {{exp|y}}ies of WesternAnimation/CowAndChicken appearing as customers of an interdimensional Mr. Smoothie. Creator/CharlieAdler reprised both roles.
577* ''WesternAnimation/{{Jellystone}}'': In addition to the many characters established as part of Hanna-Barbera's FunnyAnimal universe, characters like WesternAnimation/JonnyQuest and WesternAnimation/{{Shazzan}}, who were not originally comedy characters, reside in Jellystone as well.
578* ''WesternAnimation/{{Young Justice|2010}}''
579** The fourth season had one with ''WesternAnimation/GreenLanternTheAnimatedSeries'' [[spoiler: In the episode "Encounter Upon the Razor's Edge!", Razer makes his return weilding the Blue Lantern Ring that came to him at the series finale. At the end of the episode, Razer combines both his Blue ring and his old Red ring into a new form where he wields the powers of both Rage and Hope before returning to his quest to find Aya.]]
580** The tie-in comic "Young Justice: Target" shows that the short ''WesternAnimation/DCShowcaseGreenArrow'', written by Creator/GregWeisman as ''Young Justice'' was, had occurred in Earth-16.
581[[/folder]]

Top