History Main / Crossover

7th Aug '16 10:17:55 AM nombretomado
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Alternatively, a single popular character can cross over from one show into the other, for a brief guest appearance; this has the effect of attracting that character's fans from the other show without requiring the writing teams to sync up or creating DVD- and arc-unfriendly episodes. This is very common in comic books, in which most characters are part of a larger universe, such as the MarvelUniverse or TheDCU. It happens less often in TV and movie properties based on comic books, since they are often made by different production companies.

to:

Alternatively, a single popular character can cross over from one show into the other, for a brief guest appearance; this has the effect of attracting that character's fans from the other show without requiring the writing teams to sync up or creating DVD- and arc-unfriendly episodes. This is very common in comic books, in which most characters are part of a larger universe, such as the MarvelUniverse Franchise/MarvelUniverse or TheDCU.Franchise/TheDCU. It happens less often in TV and movie properties based on comic books, since they are often made by different production companies.
22nd Aug '15 3:06:24 PM Josef5678
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Not to be confused with certain [[HummerDinger SUVs]].

to:

[[IThoughtItMeant Not to be confused with with]] certain [[HummerDinger SUVs]].
12th Nov '14 6:17:05 AM rcmerod52
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[-[[caption-width-right:350:Drinking brings the [[WesternAnimation/TheSimpsons most awesome]] [[WesternAnimation/{{Futurama}} of characters]] together.]]-]

to:

[-[[caption-width-right:350:Drinking brings the [[WesternAnimation/TheSimpsons most awesome]] [[WesternAnimation/{{Futurama}} of characters]] together.]]-]
[[Recap/TheSimpsonsS26E6Simpsorama (This actually did happen now.)]]]]-]
1st Nov '14 6:09:40 PM Patachou
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1st Nov '14 5:27:44 PM Patachou
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Added DiffLines:

* CrossOver/{{Music}}
24th Dec '13 12:01:06 PM SeptimusHeap
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!Examples

[[foldercontrol]]

[[folder:Anime and Manga]]
* Creator/GoNagai has frequently crossed their different works (mainly his HumongousMecha series) over since the seventies. Some of the main instances are:
** ''Anime/MazingerZ'' and ''Manga/{{Devilman}}'' in Mazinger tai Devilman movie.
** ''Anime/GreatMazinger'' and ''Manga/GetterRobo'' in the movies: Great Mazinger vs GetterRobo, and Great Mazinger vs Getter Robo G.
** Great Mazinger and ''Anime/UFORoboGrendizer'' in the movie: Great Mazinger vs Grendizer
** Great Mazinger, Getter Robo and ''Anime/UFORoboGrendizer'' in the movie: Grendizer, Getter Robot G, Great Mazinger: Kessen! Daikaijuu.
** Mazinger Z, Devilman and ''Manga/ViolenceJack'' in the CBCharaGoNagaiWorld OVA series.
** Mazinger Z, Great Mazinger, UFO Robo Grendizer, Getter Robo and ''Anime/KotetsuJeeg'' in the SuperRoboRetsuden manga penned by KenIshikawa.
** Mazinger Z, Great Mazinger, Grendizer, Getter Robo G, Kotetsu Jeeg, ''GroizerX'', ''PsychoArmorGovarian'', ''GodMazinger'' and ''Anime/{{Mazinkaiser}}'' [[http://www.youtube.com/watch?v=IdPgpgZPQl8 in an promotional video]].
** Mazinger Z, Great Mazinger, UFO Robo Grendizer, Getter Robo, Getter Robo G, Devilman and Cutey Honey in the Dynamic Heroes e-manga (also known as Nagai Go Manga Gaiden - Dynamic Heroes or Go Nagai manga heroes crossover collection - Dynamic Heroes), an e-manga released in 2004 and later compiled in tankoubon.
** Getter Robo and Devilman in the "Devilman vs Getter Robo" manga. At the end of it, Akira and Miki lampshade the trope, joking about whom they will visit the next time.
* For the 9th anniversary of the MMORPG MapleStory ''TowerOfGod'' author was asked to make a vignette in which each property's respective heroes faced off against each other.
* The mangaka group Creator/{{CLAMP}} have crossed their works over to the [[CanonWelding point that now they are all in one big, weird world]]. Some of these are significant to the plot, many seem to be just for fun. A frequent crossover element is the Clamp Campus, a gigantic private school that shows up in ''CLAMP Campus Detectives'', ''[[Manga/{{X1999}} X/1999]]'', ''Dukylon: CLAMP Defenders'', and ''Man of Many Faces''. Characters from ''Manga/{{Chobits}}'' make an appearance in ''{{Kobato}}''. The protagonist of ''TokyoBabylon'', Sumeragi Subaru, shows up in ''X/1999''. Even their "joke" series ''{{Miyuki-chan in Wonderland}}'' contains crossovers. In one story, Miyuki ends up as the Damsel In Distress in ''X/1999''. In another, she ends up playing (strip) {{Mahjong}} with other characters from CLAMP works. And there are the tribute music videos ''CLAMP in Wonderland'' and ''CLAMP in Wonderland 2'' which have segues between all of their series to date.
** Then there is ''Manga/TsubasaReservoirChronicle''. The entire basic '''premise''' is being an ''AlternateUniverse'' ''MassiveMultiplayerCrossover '' with characters from most of CLAMP's works showing up, often in different contexts from their original portrayal, such as characters from opposing sides of ''[[Manga/{{X1999}} X/1999]]'' hanging around the same cafe. Two of the main characters are alternate versions of the main characters from ''Manga/CardcaptorSakura''. '''AND''' it is the sister series to ''Anime/XxxHoLic''. The plots of the two series are so intertwined that they are essentially two vantage points on the ''same'' story.
* The different stories NasuVerse are all colliding in a hilarious new AffectionateParody called ''Anime/CarnivalPhantasm''. The first episode featured the characters of ''VisualNovel/FateStayNight'' finding out that the Holy Grail War had become a game show. Numerous people from throughout the NasuVerse can be seen in the audience.
* Speaking of NasuVerse, in 2010, the main writer of the ''LyricalNanoha'' franchise has produced two crossover one-shot mangas, ''VisualNovel/FateStayNight×Anime/MagicalGirlLyricalNanoha'' and ''Anime/MagicalGirlLyricalNanoha×Manga/FateKaleidLinerPrismaIllya''. The titles are rather self-explanatory.
* CrossEpoch, a special manga where ''Franchise/DragonBall'' and ''Manga/OnePiece'' crossed over.
** There are also separate anime and manga crossover specials of ''Manga/{{Toriko}}'' and ''Manga/OnePiece''.
** And now there is going to be an OVA crossover with all three.
* In the manga ''Manga/{{Digimon V-Tamer 01}}'' are a total of 3 non canon crossovers, each being about a hero of the current digimon anime series being space warped and ending up battling an extremely powerful digimon together with Taichi and Zero.
* In honor of Shounen Sunday's 50th anniversary, the publisher released a DVD including three {{OVA}}s for their three most popular animes: ''Manga/InuYasha'', ''Manga/UruseiYatsura'', and ''Manga/RanmaOneHalf''. The DVD also included [[http://www.youtube.com/watch?v=8bhBU07b2YM&feature=related this]] animated short, where the main characters of the three series met up. HilarityEnsues.
* ''Anime/{{Voltron}}: The Fleet of Doom'', a TV special made for American audience which had Lion Voltron and Vehicle Voltron working together to battle the allied forces of King Zarkon and the Drule Empire.
* ''Franchise/LupinIII'':
** One could argue this is the premise of the series itself: Lupin from ''Literature/ArseneLupin'', Jigen is Creator/JamesCoburn from ''Film/TheMagnificentSeven'', Goemon is descended from UsefulNotes/IshikawaGoemon, Fujiko was the DisposableLoveInterest from ''Film/JamesBond'', Zenigata is descended from ''Zenigata Heiji Covers all of Edo''.
** ''Anime/LupinIIIVsDetectiveConan'', a crossover movie with... you guessed it ''Manga/DetectiveConan''. Not only works, but also feels like a remake of Anime/TheCastleOfCagliostro. Go figure. Happening again with ''Anime/LupinIIIVsDetectiveConanTheMovie''.
** Lupin and his gang appeared in ''[[Manga/{{Kochikame}} Super Kochikame]]'', a special manga volume for Kochi's 30th anniversary in 2006. The Lupin segment was co-authored by Osami Akimoto and Monkey Punch.
* One episode of ''Manga/DragonBall'' took place in [[Manga/DoctorSlump Penguin Village]].
** And Manga/DoctorSlump's 1997 remake anime has Goku visits Penguin Village. The different is that Arale is now a main character while Goku is a guest star, and ArtEvolution.
* In one episode of the 1980s ''Anime/{{Astroboy}}'', the titular robot is taken back in time, along with his sister Uran, the one and only Manga/BlackJack and the doctor's assistant/companion Pinoko, in order to save the main character from ''Manga/PrincessKnight. Good ol' Tezuka mix-and-match.
* Leiji Matsumoto's works. Like with Creator/{{CLAMP}} everything is in the same universe (Yamato and Harlock and Maetel and Emeraldas and the Queen Millennium...) but details do not match (Tenshiro died in three different ways already).
* ''Manga/UntilDeathDoUsPart'' has characters and organizations from ''Manga/YamiNoAegis'', by a different author.
* ''PrettyCureAllStars'' crosses over all the existing Pretty Cure series in one big movie. This has gone from one movie teaming four teams to ''five'' movies featuring ''eight'' teams.
* ''Anime/TurnAGundam'' acts as one for all of the Gundam shows that came before it. Universal Century mobile suits are excavated and used by the protagonists while newer mobile suits use technology from Universal Century. And near the end of the series, [[spoiler:the Black History is revealed to be every single Gundam series, both before and after Turn A.]]
* All of the shows by AIC makers of TenchiMuyo crossover some what with each other Dual! ended up with an cameo and recycling the "Light hawk wings" for its big mech. later in Tenchi Muyo! GXP and mech looking like the one from DUEL! showed up in an episode.
* The authors of ''Manga/FairyTail'' and ''Manga/FlunkPunkRumble'' did a one-shot called Fairy Megane that brought together the main characters from the two series. (The mangaka of the latter used to work as an assistant to the mangaka of the former.)
* KyoshiroToTowaNoSora is Kaishaku's go at it with his past works, most notably KannazukiNoMiko and {{UFO Princess Valkyrie}}.
* ''OnePiece'' and ''{{Toriko}}'' have crossed over three times so far, the first special (which was animated) took place pre-Timeskip in OnePiece, while the other two take place post. Both authors are real good friends so theres a chance that the crosses are canon.
** The two also crossed over with the ''Manga/DragonBallZ'' universe for the special "Dream 9: Super Collaboration Special", which involves Goku, Luffy, and Toriko fighting in a tournament so they can eat the world's rarest meat, meanwhile an energy sucking monster is stealing energy from the most powerful fighters.
[[/folder]]

[[folder:Asian Animation]]
* The 2011 spring animation festival for CCTV Dream has popular [[http://www.cctvdream.com.cn/qiao/zhuanti/2011dongmanchunwan/2011chunwan.htm characters from Chinese animation watch and interact various animated shorts from different studios]].
[[/folder]]

[[folder:Comics]]
* This was the entire premise of ''TheLeagueOfExtraordinaryGentlemen'' -- graphic novels and [[Film/TheLeagueOfExtraordinaryGentlemen movie]] both.
* ArchieComics is not afraid of this. The only real thing that defines the universes (excluding ''Sonic the Hedgehog'' and other licensed series) is different towns in America. The Archies performing alongside ''JosieAndThePussycats''? Sure!
** Sabrina however did crossover with ''Sonic the Hedgehog'', in a two part-special that expanded both series.
** ''[[http://en.wikipedia.org/wiki/Archie_Meets_the_Punisher Archie Meets The Punisher]]''. Yes, ''really''.
*** In fairness, the early 90's Frank Castle was essentially a well-equipped assassin, not an amoral wholesale slaughtering machine leaving dozens of bloody corpses everywhere. And he not only engages in less violence here than his usual missions of the time, he even lets his target live. Still, the fact that everyone involved managed to pull it off at all, much less make a pretty good story, is downright amazing.
** [[http://www.newsarama.com/comics/archie-tiny-titans-aw-yeah-10719.html Tiny Titans meets Little Archie]]. Yes, ''really''.
** There was also a crossover of Archie and the TeenageMutantNinjaTurtles. Here is a [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/21529-tmnt-meets-archie review]] of it, courtesy of [[WebVideo/AtopTheFourthWall Linkara]].
** The "Night At the Comic Book Shop" trade paperback had Archie deal with some old comic characters that Archie Comics punished.
** Archie Comics is doing a crossover bewtween [[ComicBook/MegaMan Mega Man]] and [[ComicBook/ArchieComicsSonicTheHedgehog Sonic the Hedgehog]] from April to August 2013.
* José Carioca's universe is set in his home country of Brazil, but he's shown to be friends with DonaldDuck in ''Disney/SaludosAmigos'' and ''Disney/TheThreeCaballeros'' (as well as the ride in the Mexican pavilion at Epcot). Thus, there are occasional crossovers between the Carioca universe and the [=McDuck=] Universe. Indeed, there has been a prolonged arc of stories where José visits Duckburg, and interacts with the various characters there.
* Various ImageComics titles (''ComicBook/{{Invincible}}'', ''SavageDragon'', ''Comicbook/{{Witchblade}}'', etc.) occasionally cross over, but the editorial policy is that what happens in one title doesn't have to affect events in another. Each hero lives in his or her own unique universe that may or may not contain versions of the other heroes. For instance, Invincible's universe has a Savage Dragon and a Witchblade who are more or less the same as their counterparts in their own books and have roughly the same adventures, but what happens in Invincible's book stays there.
* The very first superhero crossover was a battle between the Human Torch and the {{Sub-Mariner}} in ''Marvel Mystery Comics'' #8-9 (1940). This is the beginning of the MarvelUniverse.
** Actually, the Shield and the Wizard at MLJ met earlier. The Wizard had learned of an impending attack on Pearl Harbor and contacted the Shield. They spent the next few issues fighting the same enemies (the Soviet/Nazi proxies called Moskovians), occasionally crossing paths for a panel or three.
* Franchise/{{Superman}} and Franchise/{{Batman}} have been appearing in comics together since {{the Silver Age|OfComicBooks}}, and Franchise/WonderWoman joining in isn't uncommon, either. Generally they team up, though having them fight each other is always a good way to drawn in readers.
-->'''Superman''': "We're surrounded, you know. I can hear them all."
-->'''Batman''': "I think we can take them. Do you think we can take them?"
-->'''Superman''': "You ''always'' think we can take them."
-->'''Batman''': "Yes, I do."
-->'''Superman''': "Then, let's do it."
-->(From ''WesternAnimation/SupermanBatmanPublicEnemies'')
** If that counts, we may as well mention ''All Star Comics #3'', the comic which ''created'' TheDCU as a shared universe.
* ''ComicBook/UsagiYojimbo'' and ''Comicbook/{{Teenage Mutant Ninja Turtles|Mirage}}'' had several single-issue gag crossovers in their respective early runs, which culminated, several years later, in a volume of ''Usagi'' which centered around a village shaman summoning the Turtles to fight invading ninjas, and the Turtles' subsequent confusion at being landed in a medieval Japan inhabited by talking animals.
* Marvel's ''ComicBook/WhatIf'' series threw in a few of these over the years, notably stories in which ConanTheBarbarian fought ComicBook/CaptainAmerica (narrow win for Conan) and {{Wolverine}} (Conan wins the first round, Wolverine regenerates and pushes Conan through a portal to the future, where he destroys the universe [[RocksFallEveryoneDies by throwing a rock at Cyclops' head]]).
** Another notable Marvel crossover, this one in-continuity, featured perhaps the two greatest SwordAndSorcery heroes (using the term loosely) of all time; Conan and ''[[TheElricSaga Elric]]''. As if that wasn't epic enough, Elric's creator MichaelMoorcock helped with the plot. It also introduced evil sorcerer Kulan Gath, who at various times has put Comicbook/RedSonja, {{Spider-Man}}, the ComicBook/{{X-Men}}, Comicbook/TheAvengers, and modern day [[BigApplesauce New York City]] through pure hell.
* [[PlanetOfTheApes Ape]] [[Series/AlienNation Nation]]. ''[[http://superdickery.com/index.php?option=com_content&view=category&layout=blog&id=31&Itemid=47&limitstart=76 Ape Nation]]''.
* Marvel's ''SquadronSupreme'' limited series (already itself a psuedo-CrossOver, featuring a team of {{Captain Ersatz}}es from DCComics) also had a one-issue CrossOver with ''ComicBook/CaptainAmerica''.
* Creator/CartoonNetwork once made a comics story in which SpaceGhost's monkey sidekick, Blip, needed to save his friends from [[NinjaPirateZombieRobot Giant Cosmic Monkey Robot]] and asked MagillaGorilla, [[WesternAnimation/DextersLaboratory Monkey]], and other simians from CN's shows for help. Together they saved the hero and defeated cosmic monkey with a giant banana, soooo...yeah.
** At one point, they also did a string of SliceOfLife segments between commercial breaks where ''all'' of the characters were shown coexisting in some sort of vaguely defined urban setting.
* ''Franchise/GIJoe'' and ''Franchise/{{Transformers}}''. While the TV show is limited to the "Old Snake" thing and the hologram of Marissa's dad (see Western Animation below), the comics have crossed over many, many times, even to the point of very important and far-reaching events in one starting in crossovers [[spoiler: such as Cobra being the source of Megatron's tank body, and Bumblebee getting blown up real good and later repaired as his new Goldbug form - though if you're from the UK, you got a different Goldbug origin.]]
* The various Marvel-DC crossovers that have been published over the years, which imply the existence of a third timeline separate from the Marvel and DC continuities in which both exist alongside each other.
** There was also the ComicBook/AmalgamUniverse, which consists of heroes who merge traits of a hero from each universe. Examples include {{Comicbook/Iron|Man}} [[ComicBook/GreenLantern Lantern]] (take a guess) and Darkclaw, who was Franchise/{{Batman}} and {{Wolverine}} (!!!). However, the events of ''{{JLA-Avengers}}'' are taken as canon for both publishers in their mainstream universes.
* ''Comicbook/JudgeDredd'' has had crossovers with ''StrontiumDog'', ''RogueTrooper'', Batman, Film/{{Alien}}s, and Franchise/{{Predator}} among others. It even crossed over with its {{Spin Off}}s on two occasions.
* Every so often, the {{Justice League|OfAmerica}} and {{Justice Society|OfAmerica}} team up and have a crossover. In {{the Bronze Age|OfComicBooks}}, it happened every year; nowadays, it's more like every three years or so.
* In the 90's, DC and Image published a crossover between Franchise/{{Batman}} and {{Spawn}}. It's best remembered for completely rejecting the usual "[[LetsYouAndHimFight meet, fight, become friends]]" routine found in most crossover comics. The two heroes hate each other for almost the entire story. At the end, Spawn wonders aloud if they could try to be friends, and Batman responds by ''burying a batarang in his face.''
* That is the main premise of the IDW comic ''Infestation: Outbreak'', where a dimensional gate (which looks suspiciously like a Franchise/{{Stargate|Verse}}) unleashes hordes of zombies from another world. [[OurZombiesAreDifferent Unlike other zombies]] from this world, these are guided by a single will, the Undermind. They are also somehow capable of infecting technology and other undead creatures. When an elite vampire squad is sent to deal with the situation, one of them, Britt, gets bitten and becomes a vampire/zombie hybrid. Britt uses [[{{Magitek}} artillica]] to open four more dimensional portals, through which the zombies and infected machines pour, along with parts of Britt herself. While the other vampires manage to shut down the portals, the threat has already spread to other worlds. These worlds are those of ''Franchise/GIJoe'', ''Franchise/StarTrek'', ''Franchise/{{Transformers}}'', and ''Film/{{Ghostbusters}}''. All these worlds now have to fight an infestation from a virulence they have not seen, infecting both man and machine.
** Infestation 2 had the Elder Gods invade the IDW Teenage Mutant Ninja Turtles, G.I. Joe, Dungeons and Dragons, Bat Boy, 30 Days of Night, and the Transformers: Hearts of Steel universes by creating a rift through universes through H.P. Lovecraft's writings.
* A special magazine published in 2000 by Creator/CartoonNetwork featured a five-page comic story in which WesternAnimation/ScoobyDoo meets WesternAnimation/ThePowerpuffGirls. Bubbles, as expected, [[TheGlomp glomps]] Scooby ("Puppy!!").
* Some crossovers Linkara has reviewed include ''Franchise/StarTrek'' [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/19736-star-trekx-men-1 and]] ''Franchise/{{X-Men}}'', Music/{{Eminem}} [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/31498-eminem-and-the-punisher-1 and]] ThePunisher, and Franchise/{{Superman}} [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/30797-superman-meets-the-quik-bunny and the Quik Bunny.]]
* Franchise/{{Spider-Man}} vs. [[WesternAnimation/TheRenAndStimpyShow Powdered Toast Man]] [[http://spiderfan.org/comics/images/ren_stimpy/006.jpg here]].
* ''[[{{Asterix}} Asterix In Belgium]]'' features a cameo appearance by [[{{Tintin}} Dupont and Dupondt]] (or Thompson and Thomson if you prefer, although they're unnamed here anyway).
* Creator/BongoComics produced a mini-series called ''WesternAnimation/TheSimpsons WesternAnimation/{{Futurama}}'' Crossover Crisis. The first half is the Planet Express crew being sent into an issue of ''ComicBook/TheSimpsons'' by the Brain Spawn. The second half is the residents of Springfield being pulled into New New York by one of Professor Farnsworth's inventions. And ''then'' it gets weird...
* In the German comic ''ComicBook/{{Werner}}'': Dex & Dogfort appear in ''Volle Latte!'', drawn by Jörg Reymann himself. In retour, Werner appears in the third Dex & Dogfort book, ''Schlachthofgiganten''.
** In the story about Creator/WilhelmBusch's 150th birthday at the end of ''Alles klar?'', Werner and Wilhelm Bush let loose his characters from ''MaxUndMoritz'' because they find the celebration boring. %% This entry was added automatically by FELH2. In case the wording doesn't make sense, rewrite it as you like, remove this comment and tell this troper.
* In ''{{WildCATs}} / Franchise/{{Alien}}s'', the xenomorphs end up destroying {{Stormwatch}}. This leads into ''TheAuthority'', making it one of the few crossovers with real effects.
*** ''World War III'', a FifthWeekEvent that saw the {{Wildstorm}} heroes teaming up with the HeroesReborn versions of Marvel characters.
* IDW Comics has taken advantage of their licenses and has published "[[ComicBook/StarTrekTheNextGenerationDoctorWhoAssimilation2 Assimilation Squared]]", a crossover between ''Series/StarTrekTheNextGeneration'' and ''Series/DoctorWho'', with the Borg and Cybermen as the villains. They even go back in time and have a crossover between the Fourth Doctor and ''Series/StarTrekTheOriginalSeries''.
* The ''{{Tintin}}'' comic ''The Seven Crystal Balls'' featured an appearance by Joey (it's brief, but he does introduce a plot point), from Herge's other comic series ''Joey, Zette and Jocko''.
* The Ferret from ''ComicBook/TheUltraverse'' made a cameo in a fight with E. Honda in ''ComicBook/MalibuComicsStreetFighter''.
* Phil Foglio's graphic novel adaptation of Robert Asprin's '''Another Fine Myth''' features a Law Machine from his own '''Buck Godot: Zap Gun For Hire''' universe:
** Aahz: "That was our introduction to...the Law Machine. We were all dimensional travelers...I haven't seen a Law Machine before or since."
* There were a couple of stories in which ''{{Franchise/Batman}}'' teamed up with ''{{Franchise/Spiderman}}''.
* The ''ComicBook/IncredibleHulk'' has crossed paths with ''{{Franchise/Superman}}'' and ''{{Franchise/Batman}}'' in separate issues.
[[/folder]]

[[folder:Fan Works]]
* In the ''WesternAnimation/JackieChanAdventures'' and ''WesternAnimation/TeenTitans'' crossover fanfiction ''Fanfic/AShadowOfTheTitans'', Jade ends up in the Teen Titans universe.
* Crossovers are huge in all fanworks, one of the two or three biggest reasons to create them.
* FanFic/DungeonKeeperAmi is an improbable mix of DungeonKeeper and SailorMoon. And quite good.
* A favourite for many seems to be ''Series/DoctorWho'', due to the remarkable ease with which the Doctor can be inserted in any story just by having the TARDIS land there. One of the most famous, TheManWithNoName, is a ''Series/{{Firefly}}'' / ''Doctor Who'' crossover, which some say should be officially added to {{Canon}}.
** Yet it VERY strangely lists one of the unofficial rules of the internet dealing with crossovers (specifically, [[VideoGame/{{Touhou}} rule ⑨]]
** There's also ''Fanfic/AHero'', a crossover with ''Anime/PuellaMagiMadokaMagica'' which subverts most ''Series/DoctorWho'' crossover formulas by instead inserting [[ScaryDogmaticAliens Dalek]] [[MadScientist Sec]] to fix the mess.
** Another crossover that's become increasingly popular is SuperWho, which combines ''Doctor Who'' with ''Series/{{Supernatural}}''.
*** Add one more show, ''Series/{{Sherlock}}'', to get SuperWhoLock, which has become quite popular on Tumblr.
** All it took was one scene where a pony had a David Tennant-like hairstyle and an hourglass on his quarter. The result is that under crossovers at FanFictionDotNet, ''Doctor Who'' is the most popular thing to cross into the world of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', beating out Franchise/SonicTheHedgehog.
** ''Fanfic/ChildrenOfTime'' crosses Ten's era with Literature/SherlockHolmes '''and''' ''WesternAnimation/SherlockHolmesInTheTwentySecondCentury''. Holmes and Watson take Martha Jones' place in Season 3 as Companions, with just a handful of episodes staying close to the original. The Eleventh Doctor is planned to make an appearance eventually...
* Fanfic wise, it's almost impossible to find a fandom that ''doesn't'' have a crossover with ''Literature/HarryPotter. ''
** There are crossovers of ''TheLandBeforeTime'' with ''Franchise/StarWars'', ''[[Literature/InheritanceCycle Eragon]]'', ''VideoGame/MegaMan,'' and, in one case, ''VideoGame/{{Halo}}.'' [[http://www.fanfiction.net/s/3007925/1/Star_Wars_The_Land_Before_Time_A_Jedis_Destiny Amazingly, many find that the Star Wars/Land Before time crossover in question is actually good.]]
*** [[http://www.fanfiction.net/s/4307557/1/Harry_Potter_and_the_Land_Before_Time Found the cross between Harry Potter and The Land Before Time!]]
*** "Voldemort has found a way to go back [[SomewhereAPalaeontologistIsCrying thousands of years]], to the time of the great dinosaurs"? That's not a promising opening line. There's even a [[http://www.fanfiction.net/s/5426174/1/ Land Before Time megacrossover series on FanFiction.net.]] Too bad [[SturgeonsLaw it's about the same as 90% of all fanfics.]]
** There is a really good one between ''Literature/HarryPotter'' and ''VideoGame/FinalFantasyVIII'' that starts when Harry, age 5, is magically transported to the world of [[VideoGame/FinalFantasyVIII FF8]] and once there he becomes a fine Gunblade fighter and is somehow able to use [[VideoGame/FinalFantasyVIII FF8]] magic and do everything one can in the game... without using Guardian Forces. He later has to go back to his own world, where an evil Dumbledore lays in waiting... See [[http://www.fanfiction.net/s/3471134/1/ here for the prequel+ Philosopher's Stone]] arc, [[http://www.fanfiction.net/s/3531911/1/ here for the Chamber of Secrets]] arc and [[http://www.fanfiction.net/s/3580477/1/ here for the Prisoner of Azkaban]] arc. It's a pity that the third arc is not finished...
** There's a small collection of ComicStrip/CalvinAndHobbes[=/=]Literature/HarryPotter crossovers, all involving Calvin being a wizard. Luckily this corner of fan fiction seems to be untouched by SturgeonsLaw, although that may be because they're so small in number. [[http://www.fanfiction.net/Harry_Potter_and_Calvin_Hobbes_Crossovers/224/266/ Give em a look.]] [[http://www.fanfiction.net/s/6548722/1/Calvin_and_Hobbes_in_the_Wizarding_World This one is particularly good so far.]]
** Harry Potter in ''Film/ThePrincessBride''. Hermione dreams the people she knows into the plot of the movie, with herself in the role of the Grandson being read the book by Dumbledore. [[http://www.fanfiction.net/s/135041/1/Harry_Potter_and_the_Florinese_Dream No, really!]]
** One involved the plot of Pretty Little Liars being re-imagined in the Potter universe. Unlike most other crossovers, the characters of both series don't actually meet. [[http://www.fanfiction.net/s/6701410/1/Pretty_Little_Witches Here it is]]
** Since both Harry and Edward Elric are looking for the PhilosophersStone at some point, there's a lot of crossover fanfiction with ''Manga/FullmetalAlchemist''.
* Likewise, you will be able to find crossovers between {{Twilight}} and just about anything
** Not many Crossover fics have managed to be as awesome as [[http://www.fanfiction.net/s/4821971/1/Edward_meets_Sherlock_Holmes Sherlock Holmes vs Edward Cullen.]]
* There are a few fics that cross over all the {{Nicktoons}}. One that does this along with extreme AU along with Alternate History (Vlad is now king of an FictionalCounterpart of America!) would be [[http://chesspiece.smackjeeves.com Chess Piece]] by NeoYi. It's filled with tons of continuity nods and has everything, from ''TheWildThornberrys'', ''WesternAnimation/InvaderZim'', and ''WesternAnimation/DoraTheExplorer'' to ''{{Doug}}'', ''WesternAnimation/AaahhRealMonsters'', ''CatDog'', and ''WesternAnimation/MyLifeAsATeenageRobot''. Seriously; it is also [[RuleOfCool awesome]].
* ''StarWars'' and ''Franchise/StarTrek''. The rivalry between their fanbases and The UltimateShowdownOfUltimateDestiny makes it a bygone conclusion feature some, and for those to require at least one major battle between the United Federation of Planets and the Galactic Empire, but there are certain exceptions.
** Another good one is [[http://sfdebris.com/unity.asp Unity]] by notable contributor SFDebris. What is a wormhole was connected from the Delta Quadrant circa Voyager's fifth season to the Star Wars Universe circa early Return of The Jedi, (disrupting the Rebel Alliance's attempt to attack the second Death Star.) Involved every character from TNG forward moving well into the future and exploring all the potential interactions in detail.
** To complete the trifecta of renowned Star Wars vs. Star Trek fanfics, there's [[http://bbs.stardestroyer.net/viewtopic.php?t=404&highlight= StarCrossed]].
* While not a FanFic, [[http://www.youtube.com/user/LogoAttitude this Youtube user]] makes videos which present "what if" situations dealing with [[VanityPlate television logos]], which also includes gems like [[http://www.youtube.com/watch?v=r6r3yR0PzCE "What if Steven Bochco collaborated with 4K!ds Entertainment?"]].
* ''FanFic/ShinjiAndWarhammer40K'' is sort of an odd example. It is not a story where the universes meet, being more of a ForWantOfANail story about Shinji getting a large amount of TabletopGame/{{Warhammer 40000}} pieces and rulebooks as a child. His different (happier) childhood makes for a more dynamic protagonist and leads him to influence the rest of the cast into making things that fit the TabletopGame/{{Warhammer 40000}} ethos more than the original Evangelion series did. It's not the straightest example of a universe to universe CrossOver.
** A more straightfoward example of a mostly in-universe crossover for Evangelion/Warhammer would be ''FanFic/ThousandShinji''.
* [[http://www.fanfiction.net/s/5493333/1/Brother_Bubbles Brother Bubbles]]. Space Marine Terminator finds himself in Rapture. Then meets a Little Sister.
* {{Spider-Man}} has a slew of crossovers on FanFictionDotNet. [[http://www.fanfiction.net/s/5011834/1/Web_of_Shadow_Fallout This one]] crossed with the TeenageMutantNinjaTurtles, and [[http://www.fanfiction.net/s/3914495/1/A_Hospital_In_Jersey this one]] crossed with ''Series/{{House}}'' are quite good.
* In Anime fanfiction (and sometimes in other media), a quite common way to establish a plot, especially in PeggySue fics, is to have a wish be granted by [[Manga/AhMyGoddess Belldandy or her sisters]]. Whether this crossover is minor or major varies between fics.
* Raquaza Master's [[http://s1.zetaboards.com/PokeTown_2/index/ Pokemon Squad]] fanfics are supposed to combine the characters from Franchise/{{Pokemon}}, ''WesternAnimation/KaBlam!'', ''Series/BarneyAndFriends'' (Barney is going to be one of the main antagonists), ''WesternAnimation/DannyPhantom'', ''WesternAnimation/{{Animaniacs}}'', ''Series/SesameStreet'' (Elmo's going to be an upcoming villain), many video games, and much, much more.
* The ''Manga/RanmaOneHalf'' fandom loves to create crossovers. There exists several archives devoted to them. Particularly common are crossovers with ''Manga/SailorMoon'' which has a sub genre called the FukuFic that has more fan fics written for it than most anime has fan fics total.
* Is there anyone Franchise/SonicTheHedgehog hasn't met yet? The blue hedgehog has had crossovers with [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Percy_Jackson_and_the_Olympians_Crossovers/253/2622/ Percy Jackson]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Godzilla_Crossovers/253/448/ Godzilla]], [[http://www.fanfiction.net/Transformers_Beast_Wars_and_Sonic_the_Hedgehog_Crossovers/65/253/ Transformers]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Halo_Crossovers/253/1342/ Halo]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_iCarly_Crossovers/253/2898/ iCarly]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Gorillaz_Crossovers/253/2340/ Gorillaz]], [[http://www.fanfiction.net/Mighty_Ducks_and_Sonic_the_Hedgehog_Crossovers/243/253/ the Mighty Ducks]] and [[FanFic/FuckTheJesusBeam Tengen Toppa Gurren Lagann]]. Are any of these even remotely connected?
** But [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Mario_Crossovers/253/347/ we all know who the big winner is...]]
** [[http://www.fanfiction.net/s/7891955/1/Sonic-Generations-Friendship-is-Timeless This]] fanfiction crosses over ''Franchise/SonicTheHedgehog'' with the cast of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', in a reimagining of the plot of SonicGenerations. It goes far beyond what the original game gives, showing the author did their research. For instance, Ponyville serves as the central [[NoPunIntended hub]], similar to the White Void in the game, the Death Egg Robot battle in the original is replaced with Nightmare Moon and in this fanfiction, Tails fights Metal Sonic instead of Sonic, possibly a reference to ''VideoGame/SonicTheHedgehog4''. The author has even adapted the updated canon of Friendship is Magic into the fanfic. However, how the author intends to implement alicorn Twilight is currently unknown.
* [[http://www.fanfiction.net/s/6095074/1/Takamachi_Nanoha_of_2814 Takamachi Nanoha of 2814]] is a ''MagicalGirlLyricalNanoha'' Crossover with ''Comicbook/GreenLantern''. Then, it started to cross over with ''everything'' by chapter 3. Written by the almost infamous Shadow Crystal Mage, so you know it's good. [[FanFic/TakamichiNanohaOf2814 Now with its own page.]]
* An author on FFnet has created this [[http://www.fanfiction.net/s/2322545/1/Halo_Republic_Commando]] a Star Wars and Halo crossover where the characters of Republic Commando (and some friends and enemies) meet Master Chief and company in the Halo universe. There is a sequel that takes place mostly in the Star Wars universe during the events of the Original Trilogy.
* FanFic/ADarkKnightOverSinCity. It's rather obvious what it is about, going by the [[ExactlyWhatItSaysOnTheTin title.]]
* FanFic/QuinnInWonderland: [[Series/{{Glee}} Quinn Fabray]] falls DownTheRabbitHole and ends up in [[Literature/AliceInWonderland Wonderland]]
* [[FanFic/BrutalSeries Brutal, Horrible, and What If]] is a series of crossovers between ''Manga/AxisPowersHetalia'' and the Hunger Games. Also AlternateUniverse.
* One author has even crossed over (at various times) Transformers with [[http://www.transformersfanfic.com/viewstory.php?sid=2439&chapter=1 Knight Rider]], The [[http://www.transformersfanfic.com/viewstory.php?sid=865&chapter=1 Real Ghostbusters]], Franchise/MastersOfTheUniverse, [[http://www.transformersfanfic.com/viewstory.php?sid=873&chapter=1 Sailor]] [[http://www.transformersfanfic.com/viewstory.php?sid=866&chapter=1 Moon]], [[http://shebakoby.deviantart.com/art/Jewel-Of-4-Sparks-32879715 Inuyasha]], and [[http://www.transformersfanfic.com/viewstory.php?sid=5021&chapter=1 Judge Judy]].
* Another author has crossed over MegasXLR with [[http://www.fanfiction.net/s/7777108/1/The_Golem_of_New_Jersey Harry Potter]], [[http://www.fanfiction.net/s/7734042/1/Megas_Five0 Lilo & Stitch]] and [[http://www.fanfiction.net/s/7929483/1/Perry_XLP Phineas & Ferb]], crossed over Phineas & Ferb with [[http://www.fanfiction.net/s/7712752/1/Seasonal_Sentai_Summerranger Super Sentai]] and [[http://www.fanfiction.net/s/7858523/1/The_Platypus_Rider Kamen Rider]], and then combined all the previous into a [[http://www.fanfiction.net/s/7998417/1/Megas_Final_Wars Mega Crossover]]
* [[http://www.fanfiction.net/u/1263379/gabriel_blessing Gabriel Blessing]] is well known for his two ''VisualNovel/FateStayNight'' crossovers:
** ''Fanfic/TheHillOfSwords'', a ''LightNovel/ZeroNoTsukaima'' crossover wherein Louise summons Shirou as her familiar. This FanFic revived the whole concept of "Let's have Louise summon a different person than Saito !"
** ''Fanfic/InFlight'', a ''Manga/{{Sekirei}}'' crossover where Shirou discovers his NotQuiteDead mother, Takami Sahashi, and replaces Minato as the Ashikabi of the North.
* [[http://www.fanfiction.net/s/5803383/1/Divine_Intervention Divine Intervention]] The [[TheBoondockSaints MacManus brothers]] meet the [[Series/{{Supernatural}} Winchester brothers.]] And it is COOL.
* One of the most prevalent type of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fan fics and fan works in general. The most regular kinds are those such as ''FanFic/BetterLivingThroughScienceAndPonies'' (''VideoGame/{{Portal}}'') and ''WebAnimation/TurnaboutStorm'' (''VisualNovel/AceAttorney''), where another series' characters are transported to Equestria, sometimes [[FisherKingdom turning into ponies in the process]], and {{Fusion Fic}}s such as ''Fanfic/FalloutEquestria'' ([[VideoGame/{{Fallout}} guess]]) and ''Fanfic/FriendsOfASolarEmpire'' (''SinsOfASolarEmpire'').
* ''Fanfic/DemonOfJustice'' is older than FanFictionDotNet and crosses Anime/MobileSuitGundamWing with [[TheWarGods Oath of Swords]], a high fantasy series.
* ''Fanfic/TheCriesOfHaruhiSuzumiya'' is a crossover between ''LightNovel/HaruhiSuzumiya'' and ''VisualNovel/HigurashiNoNakuKoroNi''.
* ''Fanfic/KyonBigDamnHero'' manages to become a crossover between LightNovel/HaruhiSuzumiya and ''TvTropes'', with ''VisualNovel/HigurashiNoNakuKoroNi'' and bits of [[spoiler:''VideoGame/{{Half-Life}}'']] added in as well.
* ''FanFic/{{Survivability}}'': The ''Manga/{{Bleach}}'' universe with an original plot, starring characters from different KPop groups (DongBangShinKi, SHINee, Big Bang, SuperJunior, B2ST, +other solo singers and actors).
* [[http://games.adultfanfiction.net/story.php?no=600086731 Bayonsiders]] has War from ''VideoGame/{{Darksiders}}'' and Bayonetta from ''VideoGame/{{Bayonetta}}'' meet up, have sex, beat up angels, beat up demons, and have sex while beating up angels and demons at the same time. All while trying to stay in continuity of both games.
* The fancomic ''Webcomic/{{Roommates}}'' by [[http://asherhyder.deviantart.com/ Ashe Rhyder]] and its spinoff ''Webcomic/GirlsNextDoor'' by [[http://pika-la-cynique.deviantart.com/ Pika la Cynique]] are this -- a crossover between ''Film/{{Labyrinth}}'', ''Theatre/ThePhantomOfTheOpera'', ''PiratesOfTheCaribbean'', ''Literature/LesMiserables'', and occasionally ''Literature/HarryPotter'' -- the many fandoms that appeared only once or twice are too numerous to count. Both by now run rather independently of each other, with a frequent ContinuityNod and ShoutOut to each other during their many, many storylines. And they are also awesome.
* Decent [[http://www.fanfiction.net/Pokemon_and_Digimon_Crossovers/80/257/ Pokemon/Digimon crossovers]] are not that common in fanfiction, but of late some interesting new submissions have popped up. SturgeonsLaw may be applicable due to grammar issues, but those with decent grammar tend to be alright.
* 4 crossovers with ''WesternAnimation/LooneyTunes'' and ''WesternAnimation/WinxClub'' have been done by [[http://www.fanfiction.net/~looneywriter]] and [[http://www.fanfiction.net/~kidswbyungsta]]. Sure enough, keeping in with the Looney Tunes style of humor, as well as adding characters from ''WesternAnimation/{{Animaniacs}}'', ''WesternAnimation/TinyToonAdventures'', and ''WesternAnimation/PinkyAndTheBrain'' may have helped them in being loved by many on [[http://www.fanfiction.net/]]
* Even though the first story of ''Fanfic/AStickySituation'' remains solidly in the ''[[Anime/DigimonTamers Digimon]]'' season three universe, the second story tosses several of the characters into ''WesternAnimation/StarWarsTheCloneWars'' due to a dimension-traveling digimon called Parallelmon (a {{Canon}} digimon, not an {{OC}} of the author). It is very well written and very entertaining.
* [[RulesOfTheInternet Rule ⑨]]: If it exists, there is a crossover with ''VideoGame/{{Touhou}}''. [[Crossovers/{{Touhou}} The series even has its own article.]]
* When ''Fanfic/WithStringsAttached'' was first conceived, it was supposed to be a [[Music/TheBeatles Beatles]]/''TabletopGame/DungeonsAndDragons'' crossover. Luckily, the author quickly matured out of that notion, and the story turned into something far more interesting and complex, though its {{RPG}} roots are quite evident still.
* There are a lot of fanarts involving [[Disney/TheJungleBook Kaa]] the Snake hypnotizing various victims. Google search "Kaa" and you'll see what the deal is.
* It's easier to count the things that Naruto hasn't had crossovers with when it's had crossovers with ''ComicStrip/TheBoondocks'', ''VideoGame/DukeNukem'', ''WesternAnimation/AquaTeenHungerForce'', ''Film/MeanGirls'', ''Godzilla'', ''Franchise/FridayThe13th'' and probably the strangest with ''MarriedWithChildren''.
* The game-idea series [[http://crossoverx.wikia.com/wiki/Crossover_X_Wiki Crossover X]] practically ''lives'' on this trope. It even uses the word "crossover" in its name.
* At least 300 crossovers of ''WesternAnimation/TotalDramaIsland'' are available on fanfiction.net
** [[http://www.fanfiction.net/~supertrip One writer]] has written the aptly named "Total Crossover" series. They are currently working on ''3'' installments at the same time. [[spoiler: The scenes with JimmyNeutron border on RevengeFic.]]
* [[http://www.fanfiction.net/s/7941617/1/To_Kill_A_Thief To Kill A Thief]]. ''KamikazeKaitouJeanne'' [[XMeetsY meets]] ''Manga/DeathNote''.
* ''Fanfic/CalvinAndHobbesTheSeries'' has a crossover ''episode'' - "Calvin's Franchise/{{Batman}} Adventure".
* [[http://www.fanfiction.net/s/7897742/1/Platinum-Angel This fic]], a crossover of ''Manga/{{Chobits}}'' with, of all things, ''Franchise/AssassinsCreed'' (trope page [[FanFic/PlatinumAngel here]]). Word from the author is that the eventual sequel will add ''Manga/MidoriNoHibi'' to the mix as well.
* The longtime crossover champion for TV shows is ''The Witness'' by Michele Martin, which managed to cross ''Series/ForeverKnight'', ''Series/{{Highlander}}'', ''Series/TheXFiles'', ''Series/QuantumLeap'', and the ''Series/{{Starman}}'' TV series. Believe it or not, the fic manages to keep all those balls in the air successfully, and even bring in cameos from a few other series, all while following a coherent plot and keeping the characters in-character!
* In''[[http://www.fanfiction.net/s/8514012/2/Keena-the-Defendants-of-Constan-Magic-Academy Keena & the Defendants of Constan Magic Academy]]'', starting in chapter 8, the group go to an AlternateUniverse that features characters from the anime film Loups=Garous.
* ''[[http://www.fanfiction.net/s/7843635/1/Portalborn Portalborn]]'' is actually inspired by the [[VideoGame/{{Portal2}} Portal 2 Mod]] for [[VideoGame/TheElderScrollsVSkyrim Skyrim.]] In starts off using the original elements of Fall of the Space Core after pitting [[{{Tsundere}} The]] [[BloodKnight Dragonborn]] with the weird and cooky [[CrazySurvivalist Doug Rattmann]]. It gets crazy, then evolves with a mysterious and adventurous plot.
* TheWTFJournal crosses over at least five fandoms.
* [[http://www.fanfiction.net/s/8985296/1/Avengers-The-Next-Generation This crossover]] between TheAvengers and PitchPerfect. It features Beca as Tony and Pepper's daughter and the rest of the cast as various superheroes.
* It's crazy just how many crossovers on FanFictionDotNet exist between ''Franchise/SonicTheHedgehog'' and ''Franchise/SuperMarioBros''. Sure, [[VideoGame/MarioAndSonicAtTheOlympicGames this may have become canon]] but authors were doing it way before then.
* Due to their popularity, it's very easy to find on deviantArt crossovers involving ''LetsPlay/TheRunawayGuys'', mostly by [=ThatOneNPC=]. The guys have crossed over with such works as ''TheWizardOfOz'', ''Literature/AliceInWonderland'', ''VideoGame/{{Portal2}}'', ''VideoGame/{{Slender}}'', ''VideoGame/ProfessorLaytonVSAceAttorney'' and ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' ([[http://fav.me/d4vqwcn no really]]), to name a few.
** Each of the guys themselves has been subject to individual crossover fanart. For instance, [[http://fav.me/d4wius7 here]] is fanart crossing over LetsPlay/{{Chuggaaconroy}} with ProfessorLayton. (Chugga liked it, by the way.)
* ''WebAnimation/ZanyToTheMax'' has an episode where the Warners (it's an ''WesternAnimation/{{Animaniacs}}'' fan series) enter the world of ''TheTimeMachine'' and try to help the Time Traveler find Weena as part of a contest. If they win, they will be able to [[ImTakingHerHomeWithMe take Weena home with them]]. [[spoiler: They don't win. WebAnimation/{{Homest|arRunner}}ripe [[AuthorAvatar Runner]] does instead.]] The episode is implied to turn into a MassiveMultiplayerCrossover by the end.
-->'''News Reporter''': We just got reports of [[WesternAnimation/ThePowerpuffGirls three super-powered sisters from the city of Townsville, Animenia]], in the Warner Bros. studio.\\
'''Yakko''': Super-powered sisters? Townsville, Animenia? [[BorrowedCatchPhrase Yes!]] Come, Warners. We must prepare for tomorrow.\\
'''Wakko''': Why, Yakko? What are we going to do tomorrow?\\
'''Yakko''': [[WesternAnimation/PinkyAndTheBrain The same thing we do every day, Wakko]]. Unfortunately, I have no idea what that is.\\
'''WesternAnimation/PinkyAndTheBrain''': They're zany, and they're the Warners, eight, eight, eight, eight, eight.
* Originally, the intent was for ''Fanfic/MyLittleUnicorn'' to be completely separate from ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' , but eventually it became a crossover, and then was fully integrated into a ''Franchise/MyLittlePony'' story.
* [[http://www.fanfiction.net/community/Seanzilla115-s-Multi-crossover-stadium/86737/3/0/1/ Seanzilla115's Multi crossover stadium]], This Fanfiction community contains some of the greatist crossover stories by the greatist authors Fanfiction.Net has to offer.
* In ''Manga/YuGiOh'' fandom there's ''Blog/AskDarkHourBakura'' which is a CharacterBlog about a crossover between the characters of Duel Monsters and the world of ''VideoGame/{{Persona 3}}''.
* In this fanfic [[http://www.fanfiction.net/s/7382184/1/Phineas-and-Ferb-Attack-from-other-Dimensions crossover]] sequel to ''Main/PhineasAndFerbTheMovieAcrossThe2ndDimension'' have the characters of Phineas and Ferb teaming up with characters from other franchises. such as ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''WesternAnimation/SpongeBobSquarePants'', ''VideoGames/SonicTheHedgehog'' ''TheVerse/MarvelUniverse'' and among others. for stop Dr. Heinz Doofenshmirtz, Plankton and villians from other universes from taking over the multiverse
* This [[http://www.fanfiction.net/s/7878969/1/The-Transformers-Marvel-Continuty fanfic]] is a shared universe for the Transformers and Marvel characters. as of 2013 an standalone Marvel and an official crossover story are yet to be written, but there plans to do so
* FanFic/TheInfiniteLoops structure allows for almost any crossover and, in the background, is technically a MegaCrossover.

[[/folder]]

[[folder:Films]]
* This was the entire premise of ''Film/TheLeagueOfExtraordinaryGentlemen'' -- [[TheLeagueOfExtraordinaryGentlemen graphic novels]] and movie both.
* Too many ''Franchise/{{Godzilla}}'' movie crossovers to list as many of his adversaries (including Film/KingKong and Mothra) had starred in their own films previously. He even had a smackdown with his own the American Godzilla (from [[Film/{{Godzilla 1998}} the 1998 film]]) in ''Film/GodzillaFinalWars.''
* MonsterMash films including:
** ''Film/FrankensteinMeetsTheWolfMan''
** ''Film/HouseOfFrankenstein''
** ''Film/HouseOfDracula''
** ''Film/AbbottAndCostelloMeetFrankenstein''
** ''Abbott and Costello Meet the Invisible Man''
** ''Abbott and Costello Meet Dr. Jekyll and Mr. Hyde''
** ''Abbott and Costello Meet The Mummy''
** ''Film/TheMonsterSquad''
** ''Film/FreddyVsJason''
* ''AlienVsPredator''
* The MarvelCinematicUniverse films, starting in 2008, built up a series of increasingly obvious crossovers (using the same actors in almost all cases):
** TheStinger in ''[[Film/IronMan Iron Man 2]]'' shows a S.H.I.E.L.D. agent finding Film/{{Thor}}'s hammer
** ''Film/IronMan2'' includes news footage of events from ''Film/TheIncredibleHulk''.
** Tony Stark appears in TheStinger in ''Film/TheIncredibleHulk'' (the 2008 one) to comment on those events.
** Captain America's shield appears in three separate movies:
*** In an alternate opening sequence to ''Film/TheIncredibleHulk'' (see [[http://www.firstshowing.net/2008/captain-america-officially-found-in-the-incredible-hulk/ here]]).
*** It can be seen on the table behind Tony Stark in ''Film/IronMan'' ([[http://www.firstshowing.net/2008/captain-americas-shield-found-in-iron-man/ screen cap here]]).
*** It plays a much bigger role in ''[[Film/IronMan Iron Man 2]]''.
** [[{{SHIELD}} S.H.I.E.L.D.]] director NickFury and Agent Coulson play roles in several films:
*** Agent Coulson is a minor character in ''Film/IronMan'', and Nick Fury has a cameo, where he name-drops "The Avengers Initiative", in TheStinger.
*** Both play more significant roles in ''Iron Man 2'', where Fury reveals Howard Stark's S.H.I.E.L.D. connection and Coulson gives Tony Stark Captain America's shield.
**** Black Widow also plays a key role in ''Iron Man 2.''
*** It is Coulson that finds Mjolnir at the end of ''Iron Man 2'', and contacts Fury about it.
*** Coulson plays a major role in ''Thor'', and Nick Fury has a brief cameo.
*** Nick Fury plays a minor role in ''Film/CaptainAmericaTheFirstAvenger'', where he greets a newly-awakened Steve Rogers and invites him to join the Avengers.
** By the time they got to ''Thor'' and ''Captain America'', the crossovers were pretty blatant, as the ''Avengers'' movie was starting production and public knowledge:
*** S.H.I.E.L.D. plays a major role in both films, and is shown to be obviously "collecting" superhero-related artifacts and information.
*** Tony Stark's father is a major character in ''Captain America'' and gets a name-drop in ''Thor''.
** And all of the crossovers up to that point lead to the feature-length [[Film/TheAvengers Avengers movie]] (though they presumably will not stop there)
** It has been confirmed that [[spoiler: the Collector]] from ''Film/GuardiansOfTheGalaxy'' will debut in ''[[ThorTheDarkWorld Thor: The Dark World]]''.
** Both Fury and Black Widow will appear in ''[[CaptainAmericaTheWinterSoldier Captain America: The Winter Soldier]]''.
* The 2005 animated film ''TheBatmanVsDracula''.
* The sequel to ''Film/ManOfSteel'' will revolve around the first live-action team-up between Batman and Superman. For bonus points, it's [[DuelingMovies going up against]] ''[[Film/TheAvengersAgeOfUltron Avengers: Age of Ultron]]'' at the box-office.
* Possibly the largest-scale example of this was when {{Disney}}, WarnerBros, and Turner Entertainment teamed up for the 1988 hit movie ''Film/WhoFramedRogerRabbit''.
** And now, Disney has done it again with ''Film/WreckItRalph''. Although all the characters from existing videogames usually appear for a short period of time, it still counts.
* TheViewAskewniverse movies are all connected, mostly by JayAndSilentBob appearing in every movie. Aside from that, there are numerous events, elements, and secondary characters that intertwine throughout all six films. It also helps that the movies take place in the [[NewJersey same state.]]
** Jay and Bob also pop up in ''{{Franchise/Scream}} 3''.
* There is an old film, ''Hercules, Samson and Ulysses'' which features the two strong men of the bronze age [[CoolVsAwesome coming to blows.]] It's also SoBadItsGood.
* WebVideo/TheCinemaSnob reviewed two crossover films that matched an Old West gunslinger with a classic horror character: ''Billy The Kid Vs. Dracula'' and ''Jesse James Meets Frankenstein's Daughter.''
* Creator/DannyTrejo has [[WordOfSaintPaul stated]] that the Machete Cortez in ''Film/{{Machete}}'' is what the Machete Cortez from ''SpyKids'' does when he's not taking care of the kids. As RobertRodriguez intended to make a ''Machete'' movie years before [[DevelopmentHell he was able to,]] he inserted a more family-friendly version of the same character into Spy Kids in the meantime, so this is technically canonical.
[[/folder]]

[[folder:Literature]]
* There are a large number of ''SherlockHolmes'' CrossOver pastiches, including at least three that pit the GreatDetective against {{Dracula}}.
** NeilGaiman's Hugo-winning 2003 story ''A Study in Emerald'' places SherlockHolmes in the world of Creator/HPLovecraft.
*** The Literature/DoctorWhoNewAdventures novel ''All-Consuming Fire'' did the same thing in 1994.
** ''Sherlock Holmes: The Crossover Casebook'', edited by Howard Hopkins, is an anthology consisting of such stories.
* Long before the Marvel comics put two Robert E. Howard barbarian heroes together, Howard himself did it: in the Bran Mak Morn story ''Kings of the Night'', Kull of Atlantis makes a special guest appearance. He and Bran team up against the Roman Legions invading Britain.
* The 1995 novel ''H: The Story of Heathcliff's Journey Back to Wuthering Heights'' crosses over the two Bronte sister classics ''Literature/JaneEyre'' and ''Literature/WutheringHeights''.
* Just about every Sandra Dallas book includes mentions of characters from previous books. Many times, the connections are so minuscule, it takes a discerning reader to spot them.
* Two minor Percy Jackson and the Olympian Characters, Drew and Lacy appeared in the Serpent's Shadow, after two books worth of hinting at the Greeks and Romans.
* The book ''ComicStrip/{{Garfield}}'s Christmas Tales'' contains a story in which Garfield, during a Christmas trip to the Arbuckle family farm, pays a visit to ComicStrip/USAcres (which happens to be right next door to the Arbuckle farm) and helps Orson, Wade, and Roy win a snowball fight against Orson's brothers.
* Win Scott Eckert documents a vast number of crossover stories that can all be demonstrated as fitting into the same world in the two-volume timeline ''Crossovers: A Secret Chronology of the World''.
* Ally Carter's novella "Double Cross" crosses over her ''TheGallagherGirls'' and ''HeistSociety'' series.
* ''Literature/StarTrekFederation'' {{justifie|dTrope}}s its crossover between ''Series/StarTrekTheOriginalSeries'' and ''[[Series/StarTrekTheNextGeneration The Next Generation]]'' by means of a NegativeSpaceWedgie.
[[/folder]]

[[folder:Live Action TV]]
* The "Tommy Westphall Universe" (or, alternatively, "The John Munch Principle") ties dozens of television series from the 1960's to the present through the characters of Tommy Westphall from ''Series/StElsewhere'' (who is revealed to have imagined the entire series in the final scene of the final episode) and John Munch, the Baltimore detective who has made crossover appearances in many television series (including the ''Franchise/LawAndOrder'' canon, ''Series/TheXFiles'' and ''Series/HomicideLifeOnTheStreet''). Thanks to Munch's crossovers and cameos, as well as shared elements and names that occur between different franchises and series, a theorem was developed showcasing the connections. More than ''90%'' of all television shows are connected via crossover, including the entire ''Series/AllInTheFamily'' franchise, ''Series/TheWire'', the entire ''Franchise/LawAndOrder'' franchise, every major medical drama made in the 90's and 00's, and many more. [[http://home.vicnet.net.au/~kwgow/crossovers%28full%29.jpg Here's a handy chart for those keeping track]]. And the chart isn't even the full extent of it, since the list doesn't include ANIMATED shows that have crossed over with these series (notably a brief crossover between ''The Simpsons'' and ''The X-Files'') increasing the cross overs to just about 99% of all series ever put on television.
* Apparently among Mr. Roark's ''FantasyIsland'' magical, mystical abilities is the [[http://www.youtube.com/watch?v=n_g_4C7-2Dg power to CrossOver with other AaronSpelling series]].
* ''TheNeighbors'' recently crossed over with ''[[DragonsDen Shark Tank]]'', to kick off a story arc featuring one of the Sharks investing in Debbie's quest to go to business school.
* The episodes of ''Series/LawAndOrderSpecialVictimsUnit'' and ''Series/LawAndOrderTrialByJury'' titled "Night" and "Day," respectively, were crossovers of each other on the same night. The major characters from each series appeared on both episodes, which dealt with a rapist. ''SVU'' focused on the investigation and arrest of the rapist, while ''Trial by Jury'' focused on the trial. (There was some discontinuity here. At the end of ''SVU'', the case was declared a slamdunk. At the beginning of ''TBJ'', the case became a sure loser.)
** ''[[Series/LawAndOrderSpecialVictimsUnit Law And Order: SVU]]'' did this years ago with a 2-part event, "Entitled," the second half of which took place on the original ''Series/LawAndOrder''. However, this plays havoc with syndication, because the shows are rerun on different networks in America; the ''SVU'' episode leaves the viewer hanging without the second half.
** ''Series/LawAndOrder'' also crossed over with ''[[Series/HomicideLifeOnTheStreet Homicide]]'' in what was originally a two-parter. While working together on a single case, the two squads had personality clashes, and normally-infallible characters faltered in unfamiliar settings. In a good move, when this episode is rerun TNT will show both the ''L&O'' and ''Homicide'' episodes back-to-back, even though they don't usually show ''Homicide'' at all.
*** This also happened when ChannelFive in the UK - which didn't screen ''Homicide'' - ran that particular ''L&O'' episode... unfortunately this practice is the exception rather than the rule in Britain, meaning numerous crossovers of this ilk are either left hanging (like the ''AllyMcBeal''/''ThePractice'' crossover - or, more germanely to Channel Five, the ''MartialLaw''/''WalkerTexasRanger'' one[[note]]Five screened Sammo's adventures, but not Cordell's[[/note]]) or shown waaaaaaay apart, like the ''MagnumPI''/''SimonAndSimon'' one. However, SkyOne did run the ''Series/NCISLosAngeles''/''Series/HawaiiFive0'' crossover thanks to their airing both series.
** Law and Order: SVU also had a brief crossover from the cast of Law and Order: Los Angeles.
* ''Series/ICarly'' had the crossover episodes "iParty With Series/{{Victorious}}" and "iMeet Series/{{Fred}}."
* ''Series/{{Community}}'' has a great [[Recap/CommunityS2E19CriticalFilmStudies episode]] with one, involving ''CougarTown''. Abed mentions that [[AscendedFanboy he was allowed on the set of Cougar Town as an extra,]] and [[https://www.youtube.com/watch?v=cWfJYJMrYa0 that episode actually exists!]]
* The whole point of moving ''{{Frasier}}'' to Seattle was to prevent [[ExecutiveMeddling network pressure]] for guest stars from ''{{Cheers}}.'' They couldn't hold out forever, though.
* The character of Captain Jack Harkness first appeared in ''Series/DoctorWho'' near the end of the 2005 series. At its finale, he was left behind by the Doctor, and was next seen in 2006 starring in his own spinoff, ''Series/{{Torchwood}}''. ''Torchwood'' ended its first series with Jack running away to rejoin the Doctor, which occurred near the end of ''Doctor Who's'' 2007 series in the three-part finale, after which Jack headed back to his team for ''Torchwood's'' second series.
** Jack returns for the series 4 finale, along with Ianto and Gwen. The episode crosses over even ''further'' with the return of Sarah Jane -- accompanied by her adopted son from [[Series/TheSarahJaneAdventures her own spinoff series]].
** Likewise, the Doctor has had a guest appearance in ''Series/TheSarahJaneAdventures'', as has the Brigadier (making him the first Classic Who character to appear in a Nu-Who spinoff, but not Nu-Who itself). Another SJA crossover aired, with Eleven and Jo Jones.
** ''Doctor Who'' also crossed over with ''Series/{{Eastenders}}'' in the 1993 special "[[Recap/DoctorWho30thASDimensionsInTime Dimensions in Time]]". Later developments in both shows would retcon them as having a ReciprocalFictionParadox.
* ''MartialLaw'' has the appearance of ChuckNorris' character for a couple of episodes. In fact, for that case, you have to watch the continuation of the case in ''WalkerTexasRanger'' if you want to know how it is resolved.
* ''Series/StargateSG1'' and ''Series/StargateAtlantis'' have had several instances of crossovers. Among the most notable are the characters Rodney [=McKay=] and Elizabeth Weir, who were introduced as secondary characters in ''SG-1'' and became two of the first regular characters on ''Atlantis'' (later joined by other ''SG-1'' {{transplant}}s.) Often times, things that happen in one series have an impact on the other, such as the recovery of a ZPM by SG-1 helping to defend Atlantis during its siege.
** There was a dedicated episode where SG-1 goes to Atlantis to find out the secrets of the DeusExMachina that'll save the galaxy, in the process both teams save the other one from disaster by the series' two {{Big Bad}}s. Additionally, several episodes of ''Atlantis'' have included scenes set in the SGC.
* Due to the extra time created by the 2008 [[TVStrikes Writer's Strike]], even some LateNightTalkShows got in on the action. While ''Series/TheDailyShow'' and ''Series/TheColbertReport'' often have crossovers (as Colbert's character originated on Stewart's show), what makes this special is the addition of Conan of ''Late Night with Creator/ConanOBrien.'' The three wound up having a mock feud over then-Presidential candidate Mike Huckabee, culminating in a MeleeATrois on Conan's show.
** Colbert and Jimmy Fallon each had the other crossover in the promotion of a fundraiser competition. It culminated in a performance of Rebecca Black's "Friday" that contained nearly the legal limit of awesome.
* ''{{Casualty}}'' and its spin-off ''HolbyCity'' have had four crossovers titled ''Casualty@Holby City'' (although they were given a special title, they ran as two-parters in the usual slots): two {{Christmas Episode}}s, one HalloweenEpisode, and a {{Very Special|Episode}} Organ Donation Awareness Week episode. We have yet to see ''Casualty@Holby City With Holby Blue'', but doubtless it's coming...
** And it has: although it wasn't called ''Holby Blue@Holby City'', the first episode of Season Two of ''HolbyBlue'' was a direct continuation of that week's ''HolbyCity'', both of which featured the medics and the cops.
* The various ''Franchise/StarTrek'' series saw many of these, beginning with The Next Generation, although events in one series rarely affected the others. The crossovers became more frequent in later years.
** The only storyline to play a major role in multiple ''Star Trek'' series was that involving the Maquis. The reason behind their existence (the creation of the DMZ) was established in ''StarTrekTheNextGeneration'' Season Seven but the Maquis were introduced in ''StarTrekDeepSpaceNine'' Season Two before turning up in "Preemptive Strike", the penultimate episode of ''The Next Generation'', and forming a major part of the backstory of Chakotay and B'Elanna in ''StarTrekVoyager''. The destruction of the Maquis by the Dominion in ''Deep Space Nine'' Season Five comes back to haunt Chakotay and B'Elanna in ''Voyager'' Season Four when the ship finally makes contact with the Alpha Quadrant.
** Events from one series do occasionally impact on later ones in less direct ways though. For instance, a major part of Sisko's backstory in ''Deep Space Nine'' was the death of his wife Jennifer during the Battle of Wolf 359, which occurred in TNG's "The Best of Both Worlds". The subsequent Borg attack on Section 001, which occurred in ''StarTrekFirstContact'', is mentioned occasionally in ''Deep Space Nine'' while the Dominion War from ''Deep Space Nine'' is mentioned in ''Voyager'''s "Message in a Bottle", ''StarTrekInsurrection'' and ''StarTrekNemesis''.
* ''Series/{{CSI}}'' has crossed over with both other shows within the CSI franchise, ''{{CSI NY}}'',''CSIMiami'' and also with ''Series/WithoutATrace.'' Miami, meanwhile, has crossed over twice with ''{{CSINY}}'', and New York once also did so with ''Series/ColdCase'', and the three core CSI programs have crossed over with a three-part story featuring Ray Langston. All five are produced by Jerry Bruckheimer and air on CBS, so bringing them together is less complicated than most.
* ''Series/AllMyChildren'', ''Series/OneLifeToLive'', and the defunct ''Series/{{Loving}}'' were all created by Agnes Nixon and share a universe. Numerous crossovers have occurred over the years. In 2004, AMC and OLTL launched an ambitious crossover storyline in which a baby from ''All My Children'' was kidnapped to ''One Life to Live''. The story lasted several months. Traditionally, ABC considered all of their soaps to share a universe, which allowed for the 1999 story (essentially a ratings stunt) in which Linda Dano's ''One Life to Live'' character traveled to ''All My Children'', ''Series/PortCharles'', and ''Series/GeneralHospital'' searching for her long-lost daughter, who turned out to be a fellow soap-hopping character, Skye Chandler.
** Especially between ''Port Charles'' and ''General Hospital'', which were set in the same town and hospital. Characters from one show frequently appeared on the other, and major eye-candy events like the annual Nurses Ball would start on ''Port Charles'' and finish on ''General Hospital''. Only when ''Port Charles'' took on a more supernatural tone did the crossovers stop.
* Similarly, on CBS, ''TheYoungAndTheRestless'' and ''TheBoldAndTheBeautiful'' were created by William Bell, leading to many crossovers and shared storylines. Though there are occasional glitches when actors who played one character on on show turn up as a completely different character on the other.
* ''TwoPintsOfLagerAndAPacketOfCrisps'' is crossed over with fellow BBC Three shows ''Grownups'' (which also stars Sheridan Smith, who plays Janet in ''Two Pints'') and ''ComingOfAge'' for the show's UsefulNotes/ComicRelief special.
* In a desperate attempt to prop up the ratings of its woebegone late '70s sitcom ''HelloLarry'', Creator/{{NBC}} had the cast make numerous crossover visits to the popular ''DiffrentStrokes''.
* ''Series/HappyDays'' and ''Series/LaverneAndShirley'' had characters appearing on each other's shows fairly regularly, and there was one true crossover storyline that spanned episodes of both series -- which was only reasonable, since ''Laverne And Shirley'' was a SpinOff of ''Happy Days''. And just to add a little weirdness to the mix, ''MorkAndMindy'' was ''also'' a ''HappyDays'' spinoff...
* ''Series/TheGoldenGirls'', ''Empty Nest'', and ''Nurses'' were all made by the same production company and all shared the same Miami setting, so there was predictably a fair amount of crossover among them.
* ''MagnumPI'' had crossovers with ''Series/MurderSheWrote'' and ''Series/SimonAndSimon''.
* ''Series/LasVegas'' and ''Series/CrossingJordan'' crossed over with one another on a regular basis.
* ''EverybodyLovesRaymond'', ''TheKingOfQueens'', and ''TheNanny'' also exist in the same universe and have been known to cross over.
* A rather famous "Night of Elizabeth Taylor" also tied ''Series/TheNanny'' to the other shows on the network that night, ''Can't Hurry Love,'' ''Series/MurphyBrown,'' and ''High Society.''
* Two Creator/DavidEKelley series, ''[[Series/AllyMcBeal Ally [=McBeal=]]]'' and ''ThePractice'', had a 1998 crossover storyline that encompassed episodes of both shows.
** Chi McBride's character from ''Series/BostonPublic'' also crossed over into an episode of ''Series/BostonLegal''.
** The continuity was thrown for a loop when Peter [=MacNicol=] played a one-off character on ''Series/BostonLegal'', a spin-off of ''ThePractice'', [[YouLookFamiliar after having played a lead character]] on ''Ally [=McBeal=]''.
*** And for another loop when the appearance of Bill Smitrovich as a guest star on BostonLegal, in a different role from the cranky, vindictive D.A. he played on The Practice.
*** The role was NotSoDifferent at all. The main difference was that his BostonLegal character worked in a state where Death Penalty was applicable.
*** The most baffling loop-thrower has to be John Laroquette, who had a notable guest appearance as a devious client on ThePractice before showing up as regular character Carl Sack in BostonLegal's fourth season.
* ''Series/{{Friends}}'' with ''MadAboutYou'', somewhat, as in a few eps Ursula can be found as the Buchmans' regular waitress, much to their dismay.
** There was an actual crossover when the MAY characters appeared in the coffee shop, mistook Phoebe for Ursula, and, assuming Ursula had been (rightly) fired there and hired here, tried to order coffee from her.
** There was also at least one with ''The Single Guy''.
** A more straight example would be the crossover with ''Series/CarolineInTheCity'' in the episode "The One With The Baby On The Bus". Caroline meets Chandler and Joey on the street and [[MistakenForGay mistakes them for a gay couple]]. The same night that episode aired, Chandler appeared in an episode of ''Caroline''.
** Then there was NBC's "Blackout Thursday," in which the characters on ''Mad About You'' caused a citywide blackout, followed by the characters on ''Friends'' and ''Madman of the People'' dealing with the aftermath. Notably, ''Seinfeld'' didn't join in as its script for the week had been written long before.
* Characters from ''TheLoveBoat'' guest-starred in episodes of ''Series/CharliesAngels'' and ''{{Martin}}''.
* ''Series/{{Seinfeld}}'' and ''MadAboutYou'' crossed over at least once, which generated FridgeLogic when in an episode of the former two characters were seen watching the latter.
* There hasn't been a direct crossover between ''Series/TheShield'' and ''Series/SonsOfAnarchy'', but a gang called the One-Niners, based in Los Angeles, has appeared in both shows, indicating that the shows share a continuity. Considering that one of ''SonsOfAnarchy'''s producers was a writer on ''TheShield'', it's not surprising.
* All of the series in the {{DCLAU}} tend to have numerous crossovers with eachother. In 2006, ''Series/ThatsSoRaven'', ''HannahMontana'', and ''TheSuiteLifeOfZackAndCody'' have crossed over (in a special called ''That's So Suite Life Of Hannah Montana''), and, in 2009, there was an another one with ''HannahMontana'', ''The Suite Life On Deck'', and ''WizardsOfWaverlyPlace'' (''Wizards On Deck With Hannah Montana''). Interestingly enough for shows with little enough continuity, the characters from ''The Suite Life'' and ''Hannah Montana'' recalled the previous crossover.
** Also, [[TheSuiteLifeOfZackAndCody Zack and Cody]] got to meet Iron Weasel when they snuck aboard the S.S. Tipton in an episode of ''Series/ImInTheBand''.
* Before the DCLAU, there were the TGIF full-night crossovers on ABC. For example, there was one such event in 1996 with ''Series/SabrinaTheTeenageWitch'', ''Series/BoyMeetsWorld'', ''TeenAngel'', and ''YouWish'' where the wise cracking [[BalefulPolymorph wizard turned cat]] Salem uses a [[TimeyWimeyBall temporal]] [[http://www.poobala.com/timeball.html ball]] and starts some shear fun.
* There was an [[http://www.youtube.com/watch?v=1zmDe_gTh84 episode]] of ''Series/PowerRangersInSpace'' that crossed over with ''Series/NinjaTurtlesTheNextMutation''.
** In the realm of examples that don't inflict pain in the viewing audience, from ''Lost Galaxy'' on, there's a recurring tradition of the seasonal team-up, a two-parter where the previous season's cast meets up with the current Rangers to deal with a threat that requires their combined powers.
** As of recent, the new ''Series/PowerRangersMegaforce'' will cross all previous rangers together.
** There was also a three-part episode of MMPR that featured the main character of of the ''MaskedRider'' series. Interestingly enough, 13 years later...
* ''Series/KamenRiderDecade'', itself an anniversary crossover of the previous 9 ''Franchise/KamenRider'' titles, became the first ''Kamen Rider'' series to cross over with a ''Franchise/SuperSentai'' series, with Tsukasa and Daiki appearing in two episodes of ''Series/SamuraiSentaiShinkenger'', and the Shinkenger appearing in an episode of ''Decade''. This, in turn, was followed by...
* ''Series/KaizokuSentaiGokaiger'', the 35th Anniversary ''Super Sentai'' series, features characters who can use the powers of the 34 previous teams, and at least one member of most of the previous teams have appeared on the show.
** As of January 2010, ''Series/KaizokuSentaiGokaiger'' teamed up with ''Series/SpaceSheriffGavan'' for ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie'', the first ''Franchise/SuperSentai''/''Franchise/MetalHeroes'' movie.
** Additionally, both ''Franchise/KamenRider'' and ''Franchise/SuperSentai'' have team-up or vs. movies, which cross over (usually) the current series with the previous one, but as of 2012...
* Both ''Franchise/KamenRider'' and ''Franchise/SuperSentai'' will team up once again with ''Film/KamenRiderXSuperSentaiSuperheroTaisen,'' starring ''Series/KaizokuSentaiGokaiger'' and ''Series/KamenRiderDecade,'' both of which were their respective anniversary series.
** And then a sequel staring some ''Franchise/MetalHeroes'' will be thrown in for ''Film/KamenRiderXSuperSentaiXSpaceSheriffSuperHeroTaisenZ''.
* ''Series/{{Ultraman}}'' and ''Franchise/KamenRider'' had a crossover short in the early '90s, unexpected considering each series is from a different company.
* ''Series/UltramanMebius'' has crossovers with older/the original ''Franchise/UltraSeries'' throughout its run. Be it from classic monsters to the older heroes showing up for a team up. TheMovie, ''Ultraman Mebius and the Ultra Brothers'' takes this to 11.
* Jack Webb's triumvirate of ''Series/AdamTwelve'', ''Franchise/{{Dragnet}}'', and ''Franchise/{{Emergency}}'' featured several crossovers between the three.
* The Polish CrimeAndPunishmentSeries ''W-11'' and ''Detektywi'' made at least one such crossover: an episode on ''Detektywi'' was the first part, depicting the eponymous detectives investigating a case; then, for the second part, the policemen of ''W-11'' took over.
* ''Series/{{Eureka}}'' and ''{{Warehouse 13}}'' have a pair of crossover episodes, where Fargo upgrades the Warehouse's computer system and Claudia visits Eureka. [[ButtMonkey Fargo]] even managed to {{MacGyver|ing}} a ''lightsaber'' with a laser pointer and an artifact. SyFy even used these episodes for a ''canon'' crossover ship. Claudia/Fargo. ''Series/{{Alphas}}'' was also given a crossover with ''Warehouse 13'', although no character in ''Alphas'' has yet appeared in either of the others.
* For one UsefulNotes/ComicRelief event, British {{Panel Game}}s ''HaveIGotNewsForYou'', ''NeverMindTheBuzzcocks'', and ''TheyThinkItsAllOver'' crossed over. The product was titled ''Have I Got Buzzcocks All Over''.
** An earlier UsefulNotes/ComicRelief had ''Have I Got ''Series/AQuestionOfSport'' For You''.
* In ''Series/TheManFromUNCLE'''s heyday an episode of ''Please Don't Eat The Daisies'' had the children believing their father was a spy after seeing him pass a matchbook to [[Series/TheManFromUNCLE Illya Kuryakin]] in an innocuous (or was it?) encounter. Hilarity ensues until, in the show's concluding scene, someone is brought in to convince the children that they've jumped to a foolish conclusion. It is Robert [=Vaughn=] whom the kids recognize instantly as [[Series/TheManFromUNCLE Napoleon Solo]].
** There was also an episode featuring ''Series/TheGirlFromUNCLE'', April Dancer.
* ''Series/HerculesTheLegendaryJourneys'' and ''Series/XenaWarriorPrincess''. ''Xena'' even had the BigBad [[spoiler: ''defeated in the other show'']].
* TV commercial example involving ''Series/{{Monk}}''[='=]s Adrian Monk and ''Series/TheDeadZone''[='=]s Johnny Smith. Three versions of the promos have them avoiding touching other people[=/=]things ([[http://www.youtube.com/watch?v=j-lgJCtcAIA at a detectives association meeting]]) and exhibiting their BlessedWithSuck[=/=]CursedWithAwesome (Monk's [=OCD=] demonstrated on [[http://www.youtube.com/watch?v=f50yHDekFfg corn counting]] and Smith's psychic ability with [[http://www.youtube.com/watch?v=ac5x9NSkW0Y a punch bowl]]). The USANetwork aired both of their shows at the same time.
* WordOfGod says that if ''Series/{{Psych}}'' hadn't made ''Series/{{Leverage}}'' a fictional show within ''Psych'''s universe, ''Leverage'''s Eliot would have had an uncle named Henry.
* TheWB once had a night dedicated to crossing over their shows. A character from one show would pop up in another, mostly for laughs and night contribute much to episode's plot. It was parodied in that night's episode of ''UnhappilyEverAfter'', wherein [[Series/SisterSister Jackee Harry]] and hinted that TheWayansBros were "waiting in the car".
* ''BreakoutKings'' : In the third episode of the first season, ''PrisonBreak'''s T-Bag....breaks out from a prison. An unprecedented case of a character crossing over to a show on a completely different network but not so surprising considering both show have the same producers (and an obvious common theme).
* Pat Tuesday and George Frankly from ''Series/SquareOneTV'''s Mathnet appeared in the ''Series/WhereInTheWorldIsCarmenSandiego'' episode "Minnehaha: The Filching of the Falls" to provide a clue.
* ''Series/CaptainKangaroo'' and ''{{Series/Mister Rogers|Neighborhood}}'' made appearances on each other's shows.
** Likewise, Rogers appeared on ''Series/SesameStreet'', and Big Bird appeared on Rogers' show in the Neighborhood of Make-Believe.
* While at the beach, Logan and Carlos of ''Series/BigTimeRush'' meet up with Patchy the Pirate of ''[[SpongeBob SpongeBob SquarePants]]''.
** MarvinMarvin met up with the Big Time Rush cast in "[[ExactlyWhatItSaysOnTheTin Big Time Marvin]]".
* Mikey and Paul Jr. from ''Series/AmericanChopper'' head down to Baton Rouge to hang out with the guys from ''Series/SonsOfGuns''.
* In the ninth season finale of ''TwoAndAHalfMen'' (the one after Charlie got McLeaned), among the people looking to buy Charlie's house are DharmaAndGreg.
* ''TheSixMillionDollarMan'' and ''Series/TheBionicWoman'' had regular crossovers, with two-part and three-part stories involving both shows (most notably "Kill Oscar," which had parts 1 and 3 on Jaime Sommers's show with the middle part on Steve Austin's). Curiously, although both series aired on {{ITV}} in Britain, the crossover episodes weren't treated as such: all three parts of "Kill Oscar" and both parts of "Welcome Home, Jaime" were aired as episodes of ''The Bionic Woman,'' while both parts of "The Return Of Bigfoot" were shown via ''The Six Million Dollar Man''.
* A 1968 Thanksgiving episode of ''Series/TheBeverlyHillbillies'' had that show's characters traveling to Hooterville, leading to a three-way crossover between ''The Beverly Hillbillies'', ''Series/PetticoatJunction'' and ''Series/GreenAcres''. Earlier episodes of ''Green Acres'' had shown Hootervillians ''watching the fictional Clampetts on TV'' and even producing an amateur play based on ''The Beverly Hillbillies'' TV show.
* USA Network had a set of commercials crossing over their various shows; [[Series/{{Monk}} Adrian Monk]] and [[Series/TheDeadZone Johnny Smith]] are each thankful the other doesn't want to shake hands; Johnny and [[Series/{{Psych}} Shawn Spencer]] debate who has the worse past; until they notice Monk counting his food; etc.
* Kensi from ''Series/NCISLosAngeles'' made a guest appearance on the revival of ''Series/HawaiiFive0''.
** Abby Scuito from the parent series ''Series/{{NCIS}}'' appeared in an episode of ''Series/NCISLosAngeles''.
*** And Bud Roberts from NCIS' parent series ''Series/{{JAG}}'' appeared in one episode in the first season.
** And then ''Series/NCISLosAngeles'' and ''Series/HawaiiFive0'' did a two-way crossover where Callen and Sam came to Hawaii to prevent a black-market bioweapons buy, then Danno and Chin Ho went to L.A. to stop one of the involved parties from unleashing the bioweapon in question.
* Naturally, ''Series/BuffyTheVampireSlayer'' and ''Series/{{Angel}}'' did it several times. Except during season 6/3, when Buffy's ChannelHop made it a lot harder and they were essentially banned. Then the ban was lifted, and crossovers happened again.
** One interesting example was the Buffy episode "Fool for Love", and the immediately-following Angel episode "Darla", which didn't share an A Plot, but were linked together by a series of flashbacks filling in Darla, Angel, Drusilla, and Spike's backstories (including one flashback shown first from Spike's perspective in "Fool for Love", and then OnceMoreWithClarity from Darla's perspective in "Darla").
* The Fox show ''Series/TheFinder'', besides having been given a BackDoorPilot from ''Series/{{Bones}}'', later had a crossover from the same when [[TheProfiler Sweets]] popped up to do a psychological evaluation of [[ShellshockedVeteran Walter]]. Dr. Jack Hodgins appeared in an episode of The Finder.
* ''{{Tinsel}}'' was [[{{Pun}} crossed over]] by ''Jacob's Cross'' during the brief engagement between Phillip Ade-Williams and Chi-Chi Nwachukwu-Abayomi.
* Shonda Rhimes' ''GreysAnatomy'' and ''PrivatePractice'' have crossovers seemingly every five episodes or so. Now that Rhimes has developed a new show, ''Scandal,'' one wonders just what kind of menage a trois is in store.
* UsefulNotes/ComicRelief did a crossover short between ''Series/TheVicarOfDibley'' and ''Series/{{Ballykissangel}}'' called "Ballykissdibley".
* The Australian series ''EscapeOfTheArtfulDodger'', which centered around the Artful Dodger after he's been sent to a penal colony in Australia, also featured fellow Dickens characters, [[Literature/DavidCopperfield Mr. Micawber and Uriah Heep]], in supporting roles.
* In 2010, ''CoronationStreet'' [[DuellingShows and]] ''EastEnders'' had a very well-received crossover to raise money for Children in Need.
* ''8 Out of 10 Cats'' does ''{{Countdown}}'' (twice) and ''DealOrNoDeal'' (once -- and it's the first [=DoND=] UK episode not hosted by Noel Edmonds).
* {{ER}} crossed over with ''ThirdWatch''. Unsurprising, as they were both created by John Wells and have similar subject matter. Unfortunately, it ended up negating a throwaway line in which a ThirdWatch character mentioned ''watching'' {{ER}} on television (obviously a ShoutOut, but it would mean that the two shows ''didn't'' have a SharedUniverse).
[[/folder]]

[[folder:Mythology]]
* OlderThanFeudalism: The {{Classical|Mythology}} tale of Jason and the Argonauts brought together many mythological heroes in a sort of Justice League Ancient Greece. "Hero" in ClassicalMythology was an awfully vague term (as [[CartoonHistoryOfTheUniverse Larry Gonick]] put it, heroes aren't necessarily ''heroic'', just excessive), and since the mission was to ''steal'' an item (the Golden Fleece) "Justice League" isn't a terribly good name for them....
* Maid Marian, the [[{{Arcadia}} shepherdess]], featured in many pastoral plays popular at May festivities. Then there was a fad for RobinHood plays. Then someone put the two characters together. It worked so well that Maid Marian is best known as a RobinHood character, even though her independent existence predates him.
* Morgan Le Fey originally appeared in ChivalricRomance in the Matter of France -- tales of Charlemagne -- before showing up in the Matter of Britain -- tales of KingArthur.
[[/folder]]

[[folder:Professional Wrestling]]
* Anything that can be deemed an "interpromotional match" can be considered a crossover of one talent for another promotion.
** After the Wrestling/{{WWE}} brand split, any match that had a ''[[Wrestling/{{WWERaw}} Raw]]'' talent going up against a ''[[Wrestling/WWESmackDown [=SmackDown!=]]]'' talent was considered this, and thus, you got a good bit of cross overs between the two brands. This was further jettisoned with the "Supershows", where Raw and Smack Down stars were on the same shows (to the point where from August of 2011 to the Raw 1000th episode, Raw was renamed the "Raw Supershow" with the word "supershow" being tacked on to the Raw logo in the style of the Smack Down logo
* Perhaps the most well known crossover in wrestling happened on the last episode of ''Wrestling/WCWMondayNitro'', March 26, 2001. After [[Wrestling/VinceMcMahon Vince [=McMahon=]]]'s purchase of the promotion, a simulcast was scheduled, with Vince on ''Raw'' bragging about how he bought his competition, while Nitro featured the WCW talent wrestling for perhaps their last time on television. The final minutes, however, proved to be the most memorable. On Nitro, [[Wrestling/ShaneMcMahon Shane [=McMahon=]]] made an appearance on Nitro (in Panama City, FL), while Vince was at the Raw location (in Cleveland, OH). The titantron showed Shane on Raw, while Nitro had its Nitrovision show Vince. The segment was to begin the invasion storyline (and that, in kayfabe, that Shane was the actual owner). It was memorable in that both TNT and TNN were basically broadcasting the same thing during those final ten minutes or so, but in different settings.
* During the Wrestling/{{ECW}} invasion storyline in 1997, Wrestling/JerryLawler appeared on ECW programming despite being contracted by the WWE. It was actually a work, as Vince had actually been attempting to help ECW be recognized, with Wrestling/PaulHeyman making several appearances on Raw during the angle.
* After [[http://www.wrestling-titles.com/us/ecw/ecw-h.html ECW World Heavyweight Champion]] Wrestling/MikeAwesome appeared on the [[ResetButton April 10, 2000]] ''WCW Monday Nitro'' while still holding the title, Paul Heyman filed an injunction to prevent Awesome from appearing on WCW TV. This led to the one-of-a-kind situation where Wrestling/{{Tazz}}, a WWE-contracted wrestler, defeated Awesome, a WCW-contracted wrestler, for the ECW World Heavyweight Title.[[note]]Tazz then lost the belt to ECW's Tommy Dreamer.[[/note]]
[[/folder]]


[[folder:Radio]]
* On the April 1, 2013, broadcast of "FamilyLife Today", John Fuller and Jim Daly, from "Focus on the Family", crossed over.
* An arguable one, similar to the UsefulNotes/ComicRelief PanelGame crossovers above, the New Year 2010 episode of TheBBC Radio 4 comedy panel game ''Radio/TheUnbelievableTruth'' featured StephenFry, Alan Davies, regular ''{{QI}}'' panelist Rob Brydon and ''{{QI}}'' producer John Lloyd. The format of the game was unchanged, but the "obvious answer" klaxon was added. Much to the satisfaction of the other players (and host David Mitchell), Stephen set it off twice.
* ''Radio/TheArchers'' had a crossover with Gardener's Question Time for Easter 2011, where the real-life panel, chaired by the real-life Eric Robson answered questions from the population of Ambridge.
* Two episodes of ''Radio/TheGoonShow'' featured guest appearances by Jack Train as Colonel Chinstrap from ''[=ITMA=]'', a popular comedy show from the previous decade.
* Batman and Robin made frequent appearances on ''Radio/TheAdventuresOfSuperman''.
[[/folder]]

[[folder:Tabletop Games]]
* "Reality Storm: When Worlds Collide" crossed over Hero Games' TabletopGame/{{Champions}} and Guardians Of Order's ''Silver Age Sentinels'', co-produced by both companies. The adventure itself was dual-statted, but the book also included official conversion notes between the Tri-Stat d10 system and 5th edition Hero System.
* ''TabletopGame/DungeonsAndDragons'' did this with the second edition meta-settings ''TabletopGame/{{Planescape}}'' and ''TabletopGame/{{Spelljammer}}'' connect individual settings' worlds into one {{Multiverse}}. So the characters of ''TabletopGame/ForgottenRealms'', ''TabletopGame/{{Greyhawk}}'' and ''Literature/{{Dragonlance}}'' can take a ride and visit each other. Planar travel reaches isolated places such as ''DarkSun'' and ''{{Ravenloft}}''. The latter hardly is a desirable destination, so it has The Mists that can appear in normal worlds and abduct the [=PCs=] to the Demiplane of Dread.
** The ''{{Spelljammer}}'' novels of ''The Cloakmaster Cycle'' demonstrated such a campaign, with most of the first book taking place on [[Literature/{{Dragonlance}} Krynn]], only gradually introducing the concept of spelljamming to the hero. Later he visited two of less known locations on [[TabletopGame/ForgottenRealms Toril]]. At least ''TabletopGame/ForgottenRealms'' actively supported the meeting with other worlds by [[http://www.thepiazza.org.uk/bb/viewtopic.php?f=2&t=6824 dropping mentions in its own sources]].
* West End Games' ''TabletopGame/{{Paranoia}}'' had a trilogy of crossovers under the banner "Vulture Warriors of Dimension X". The first two adventures crossed over with ''Cyberpunk 2013'' and ''TabletopGame/{{Twilight2000}}'', while the third adventure used time- and dimension-travel as a campaign hook for open-ended crossovers with other franchises.
* One of the planned alternate settings for {{Exalted}}'s third edition: {{Exalted}} vs. [[TabletopGame/OldWorldOfDarkness the World of Darkness]].
[[/folder]]

[[folder:Theatre]]
* ''Don Juan und Faust'' (1829) by Christian Dietrich Grabbe, a German dramatist. It is a crossover of the myth of {{Faust}} and of the tale of DonJuan.
* Stephen Soundheim's ''IntoTheWoods'' features Literature/{{Cinderella}}, Literature/{{Rapunzel}} and Literature/JackAndTheBeanstalk, with cameos by Literature/SleepingBeauty and Literature/SnowWhite.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/ForzaMotorsport 4'' features the Top Gear (UK) test track, and Jeremy Clarkson will provide commentary on dozens of cars in the ''Autovista'' mode. All the Reasonably Priced Cars from the UK and US Top Gear will show up as well.
** The Warthog from ''{{Halo}}'' will appear as an EasterEgg in the Autovista mode with Cortana (Jen Taylor) providing the commentary for it in the place of Clarkson. Unfortunately, it's not drivable.
* {{Konami}} has a great story with this.
** Konami's Wai Wai World series, which was the first cross-over in video game history.
** Konami's VideoGame/{{Parodius}} series.
** ''VideoGame/KonamiKrazyRacers''.
** ''VideoGame/DreamMixTVWorldFighters'', is a crossover between Konami, Hudson and Takara.
** ''VideoGame/SundayVSMagazineShuuketsuChoujouDaikessen'', is crossover between two manga mazine giants, Weekly Shonen Sunday and Weekly Shonen Magazine.
** [[{{Gradius}} The Vic Viper]] appears as a TransformingMecha in ''VideoGame/ZoneOfTheEnders 2''.
** Some characters in ''PopNMusic'' come from other {{Konami}} franchises, as a result of having songs or remixes of songs from games they appeared in being put in the game:
*** [[{{Gradius}} Vic Viper]], in his NES ''Gradius'' form ("Gradius -Full Speed-", "A Shooting Star")
*** [[VideoGame/{{Castlevania}} Simon Belmont]] ("Akumajo Dracula[[note]]the Japanese name for the ''Castlevania'' series[/note]] Medley Hybrid".)
*** [[GanbareGoemon Goemon]] ("Ganbare Goemon Medley")
*** [[VideoGame/DanceDanceRevolution Emi and Afro]], exactly as they appeared in DDR ("Flowers" and "Afronova Primeval," respectively, as well as "DDR Megamix" for Afro)
*** [[BeatmaniaIIDX Tran]] (various IIDX songs)
*** [[BeatmaniaIIDX SigSig]], exactly as she appeared in IIDX ("[=SigSig=]")
*** [[VideoGame/ZoneOfTheEnders Dingo and Ken]] ("Beyond the Bounds")
* ''VideoGame/AdventureQuestWorlds'' has a crossover event with ''Webcomic/CtrlAltDel''.
** ''[=AdventureQuest=] Worlds'' itself is one huge mix of the three main AE games, ''VideoGame/AdventureQuest'', ''VideoGame/DragonFable, and ''VideoGame/MechQuest. Heroes and villains from all three have been featured in the game, although arguably the most evil villain of all three gets killed off right in the beginning of the game.
** Before that, ''[=DragonFable=]'' and ''[=AdventureQuest=]'' had a crossover mission.
** Also, ''[=AdventureQuest=]'' and ''VideoGame/WarpForce'' are in the same period of time, but it began with a crossover from ''[=AdventureQuest=]''.
* ''VideoGame/TheKingOfFighters'' -- Featuring characters from ''VideoGame/FatalFury'', ''VideoGame/ArtOfFighting'', ''VideoGame/PsychoSoldier'', ''VideoGame/IkariWarriors'', and one or few from other SNK titles, as well as some exclusives like Kyo Kusanagi and his partners and rivals.
** One game in its 3D spinoff Maximum Impact (Mainly MI:2) had Hanzo Hattori from ''SamuraiShodown'' and Fio Germi from ''MetalSlug'' as unlockable characters.
** ''MetalSlug 6'' and ''7'' featured Ralf Jones and Clark Still (originally from ''IkariWarriors'', but using their appearances from the ''KOF'' franchise) as playable characters, with fellow Team Ikari member Leona appearing as a DLC character in ''MetalSlug XX'', a PSP re-release of ''Metal Slug 7''.
* In addition to some already present in the KOF series, ''VideoGame/NeoGeoBattleColiseum'' also added characters from other SNK titles that the KOF series didn't add, as well as some ADK titles (due to SNK Playmore's purchase of ADK after it filed for bankruptcy).
* ''KingdomHearts'' -- Where {{Disney}} and ''Franchise/FinalFantasy'' meet.
* The ''VideoGame/RivalSchools'' games have had a few crossovers with {{Capcom}}'s more popular fighting game series ''StreetFighter''; the most obvious was Sakura Kasugano, Ryu's HeroWorshipper, being a playable character in the console versions of the game. There is also a character known as Ran Hibiki, whose name is almost exactly the same as that of Dan Hibiki. Just what her relationship to him is undetermined, assuming there is a relationship at all and it is not simply an {{homage}}.
** Ran's classmate, the unnamed [[ClassRepresentative Chairperson]], also happens to study Dan's self-invented martial art, Saikyo-ryu, with [[JokeCharacter predictable results]].
** Hinata also claims to be a student of "Masters-ryu Karate" in ''Nekketsu Seishun Nikki 2'', which explains why some of her special moves have the same flame effect as Ken's Dragon Punch in ''Super Street Fighter II''.
** Also in ''StreetFighter'', Cody, Guy, Rolento, and Sodom from ''FinalFight'' appear as playable characters in the Alpha series. The crossover between the two also carried over into the cartoon, which featured a retelling of ''Final Fight's'' storyline while adding Ryu and Ken.
* ''VideoGame/SuperRobotWars.'' That is all.
** ...Until the same company also gave us VideoGame/AnotherCenturysEpisode. And said developers also made ''VideoGame/NamcoXCapcom'' and ''VideoGame/ProjectXZone''.
* The adventure game ''SherlockHolmes: Nemesis'' features Holmes matching wits with GentlemanThief Arsene Lupin.
** There are stories and videogames which also cross him over with the CthulhuMythos.
* The ''VideoGame/SegaSuperstars'' series subverts this at first, as it is essentially a collection of games based on Sega properties, but the second game, ''Superstars Tennis'' has Sega characters all play tennis together, playing the trope straight. Then there was a third racing game, which was a lot better than expected.
** Before that we had, ''VideoGame/FightersMegamix'', which included most of Sega's 3D characters in a fighting game.
* While it makes sense since they are a part of the same cosmology, most of Bioware and Obsidian's D&D-based games have subtle crossovers. Most notably, ''BaldursGate II'' features artifacts from some of the characters of ''PlanescapeTorment'', and one of said characters is also mentioned by an NPC in ''VideoGame/NeverwinterNights2''.
** Not surprising. The collusion started with ''VideoGame/NeverwinterNights'', but reached its height with ''VideoGame/KnightsOfTheOldRepublic''. The first game is "''BaldursGate'' with lightsabers." The second is "''PlanescapeTorment'' with lightsabers"
** Perhaps less crossover than {{cameo}} but the fates of the charactera from the TV show of DungeonsAndDragons is on a wall in ''Baldur's Gate II''.
* [[VideoGame/NinjaGaiden Ryu Hayabusa]] in ''VideoGame/DeadOrAlive''. Also done in reverse, with Ayane appearing as a supporting character in the new ''VideoGame/NinjaGaiden'' games.
** ''Dead or Alive 4'' has Nicole-458, a Spartan from the ''Franchise/{{Halo}}'' verse.
** ''Dead or Alive 5'' has [[GuestFighter Guest Fighters]] from VirtuaFighter appear.
* ''VideoGame/{{Battletoads}} and VideoGame/DoubleDragon: The Ultimate Team'' was one of the earliest intercompany video game crossovers, which was made possible by the fact that both series were published in America and Europe by Tradewest. The game itself is really a ''Battletoads'' game with ''Double Dragon'' characters as guest stars (some of which were misnamed).
* ''VideoGame/SuperSmashBros.''
* ''VideoGame/MarioAndSonicAtTheOlympicGames''
* [[NightsIntoDreams NiGHTS]] is featured in both of the ''VideoGame/SonicAdventure'' [[VideoGame/SonicAdventure2 games]], and while he bears no real significance to the plot, he is a part of a level in each, moreso in ''VideoGame/SonicAdventure''.
* NiGHTS and other ''VideoGame/NightsIntoDreams'' characters also make an appearance in the the Deadly Six edition of ''VideoGame/SonicLostWorld''. DLC for the game also includes a ''VideoGame/YoshisIsland'' zone and a [[Franchise/TheLegendOfZelda Zelda]] crossover was hinted in Nintendo Direct.
* ''Jewelry Master Twinkle'', an already-obscure PuzzleGame, is actually a crossover between the ''TetrisTGM''-like game ''Jewelry Master'' and the even-more-obscure mahjong game ''Taikyoku Mahjong Net-De-Ron''.
* ''VideoGame/UnrealChampionship2TheLiandriConflict'' featured Raiden from ''MortalKombat'' and Shao Kahn as an optional announcer. It helps that it was the first Unreal game being published by MidwayGames.
* ''{{Capcom}}'' has [[CapcomVsWhatever something of a history]] with these, with ''VideoGame/MarvelVsCapcom3'' being the latest installment.
* ''VideoGame/MortalKombatVsDCUniverse''
* ''AliensVsPredator''. Unlike the films, this series is actually really good. The Atari Jaguar game and the two PC games are considered classics in the [[FirstPersonShooter FPS]] genre.
* The SoulSeries is famous for this. Guest characters have included [[Franchise/TheLegendOfZelda Link]], {{Spawn}}, [[VideoGame/{{Tekken}} Heihachi]], [[VideoGame/TalesOfSymphonia Lloyd Irving]], [[VideoGame/GodOfWar Kratos]], [[StarWars Yoda and Darth Vader]], and [[VideoGame/AssassinsCreedI Ezio Auditore da Firenze]].
* ''VideoGame/CrossEdge'' is this in and out, with characters from the ''Franchise/{{Disgaea}}'', ''VideoGame/{{Darkstalkers}}'' and ''Franchise/{{Atelier}}'' franchises making playable appearances (some, like Marie from ''Atelier Marie'', being shown to international audiences for the very first time).
* ''VideoGame/AstroBoyOmegaFactor'' is a CrossOver action game of Anime/AstroBoy and other works by Osamu Tezuka.
* ''VideoGame/ProfessorLaytonVsAceAttorney'', obviously combining ''Franchise/ProfessorLayton'' and ''VisualNovel/AceAttorney''.
* A (currently) tentative title game with a three-way crossover with ''Franchise/JakAndDaxter'', ''Franchise/RatchetAndClank'', and ''Franchise/SlyCooper''. Some fans were thrilled, others... [[FandomRivalry Not so much]].
* ''VideoGame/DissidiaFinalFantasy''. It's the main heroes and villains of Final Fantasies I-XII beating the ever-loving crap out of each other!
* The retail version of the ''DoDonPachi [=DaiFukkatsu=] Black Label'' 360 port features an arrange mode that crosses ''[=DoDonPachi=]'' over with ''VideoGame/{{Ketsui}}'', with scoring elements, player ship, and TrueFinalBoss taken right out of ''Ketsui''.
* ''FamicomJump 1'' and 2.
* ''JumpSuperStars''
* ''VideoGame/PuttPutt and VideoGame/FattyBear'''s ''Activity Pack''.
* ''VideoGame/KoumajouDensetsu'', ''VideoGame/{{Touhou}}'' meets ''VideoGame/{{Castlevania}}''.
* ''VideoGame/PokemonConquest'': ''Franchise/{{Pokemon}}'' meets... ''NobunagasAmbition''.
* ''VideoGame/{{Half-Life}}'' and ''VideoGame/{{Portal}}'' were originally different universes altogether. (GLaDOS vaguely alludes to the events of Half-Life once in passing, but that was just an easter egg.) But then! In ''VideoGame/{{Portal 2}}'' you can find the drydock for a ship called the Borealis, and ''VideoGame/{{Half-Life 2}}: Episode 2'' ends with Gordon Freeman about to set off to find it.
** The shared universe is not only an allusion in the first game - in several rooms the player can find projectors with slides explaining explicitly that Black Mesa is a (hated!) competitor of Aperture Science.
* While we're at it, the first official mod for ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'', after the long-awaited HD Texture Pack... was a collaborative effort between Valve and Bethesda, showing just where that [[EnsembleDarkhorse adorable little]] [[VideoGame/{{Portal2}} Space Core]] wound up.
** And one of the fans wrote a mod that adds a crashed SSV ''Normandy'' from ''Franchise/MassEffect''.
* ''DiddyKongRacing'' for the {{Nintendo 64}} is unusual in that it crossed ''VideoGame/DonkeyKongCountry'' with two games still in development when it was released: ''{{Banjo-Kazooie}}'' and ''Conker's Twelve Tales'' (which later became ''VideoGame/ConkersBadFurDay''). Banjo and Conker were removed from the NintendoDS version, obviously due to {{Rare}} and Creator/{{Nintendo}} parting ways.
* Every Mario game that SquareEnix has worked on (''VideoGame/SuperMarioRPG'', ''FortuneStreet'', and ''Mario Hoops 3 on 3'') has included characters from their own series in some form. ''SMRPG'' features a BonusBoss utilizing the boss, victory, and Prelude themes from ''VideoGame/FinalFantasyIV'', ''Hoops'' features [[VideoGame/FinalFantasyI a Ninja, a White Mage, a Black Mage,]] a Moogle, and a Cactuar as unlockable characters, and roughly half the roster of ''FS'' is made up of ''DragonQuest'' characters (with some ''Final Fantasy'' characters appearing in [[NoExportForYou previous Japan-only installments]]).
* ''M.U.G.E.N'' is technically the ultimate crossover game, as, for example, you can fight a Touhou character with a ''VideoGame/MortalKombat'' character. That's just a basic example, as well!
* ''VideoGame/{{Mari0}}'' is a fan-made {{freeware|games}} crossover between ''VideoGame/SuperMarioBros'' and ''VideoGame/{{Portal}}''. You play as Mario... except you have a portal gun.
* Blockland has a ROBLOXian add-on that can make it be this
* ''VideoGame/PAYDAYTheHeist'', with its gameplay so inspired by ''VideoGame/Left4Dead'', went the full mile and released a heist based on Mercy Hospital from ''[=L4D=]'''s "No Mercy" campaign.
* Pop 'n Pop, an obscure puzzle game does this with both the gameplay and the characters. The gameplay is essentially [[VideoGame/BubbleBobble Puzzle Bobble]] with a few elements from {{Space Invaders}} thrown in while the roster is made up of characters from various Taito arcade games.
** Averted in North America, [[DolledUpInstallment where it was rebranded as a Yogi Bear game]].
* The [[http://www.youtube.com/watch?v=OK5-EIzDtKo recently announced]] ''VideoGame/ShinMegamiTenseiXFireEmblem'', which, as its title suggests, will feature characters from both Creator/{{Atlus}}'s flagship metaseries and Creator/{{Nintendo}}'s famed TacticalRPG franchise.
* Capcom and Valve are coming together to have a crossover of sorts in each other's games. For Valve, they are bringing Rochelle, Coach, Ellis and Nick (the survivor characters) to ''VideoGame/ResidentEvil6'' on the PC in Mercenaries mode. For Capcom, they are bringing the Lepotitsa, Napad and Ogroman as special infected counterparts to Valve's special infected for ''VideoGame/Left4Dead2''.
** Way before that, thanks to [[GameMod players modding the game]], you can have various characters from many other games be playable within Left 4 Dead and Left 4 Dead 2.
* ''VideoGame/PokerNightAtTheInventory'' has [[VideoGame/TeamFortress2 the RED Heavy]], [[WebAnimation/HomestarRunner Strong Bad]], [[Webcomic/PennyArcade Tycho]], and [[VideoGame/SamAndMaxFreelancePolice Max]] get together for a game of poker. The sequel adds [[VideoGame/SamAndMaxFreelancePolice Sam]], [[VideoGame/{{Borderlands}} Claptrap]], [[WesternAnimation/TheVentureBrothers Brock Samson]], and [[Franchise/EvilDead Ash Williams]], with [[VideoGame/{{Portal}} GLaDOS]] as the dealer.
* Even the venerable ''MarioKart'' series does this... although ''most'' of the characters are Marioverse stalwarts, Donkey Kong and Diddy Kong are their ''VideoGame/DonkeyKongCountry'' incarnations. Being co-developed by Namco, the ''Mario Kart GP'' arcade games go further than the home console versions and include characters from Pac-Man.
* A small one in the ''VideoGame/WithFriends'' line between ''Running With Friends'' and ''Matching With Friends''; you can pick up letter tiles from ''Words'' as bonuses in ''Running''. Get enough to spell out a word and you earn extra gems and XP.
* The finale of ''GhostRecon: Advanced Warfighter 2'' has the Ghosts call in an air strike, and in ''{{HAWX}}'', you get to play the mission from the jet fighters' point of view. A similar crossover occurs between ''Future Soldier'' and ''HAWX 2''.
* ''VideoGame/StarCraft'' had an unofficial crossover with ''Manga/RanmaOneHalf" in a campaign called Vision of the Future. Unfortunately, the file is currently unavailable as the site that had it expired.
* The ''VideoGame/AngryBirds'' series has a couple of these.
** The "Red's Mighty Feathers" episode in the original game is one with ''VideoGame/BadPiggies'', as Red tries to bust the pigs' various contraptions to keep them from making off with an egg.
* ''AB Rio'' is one with [[WesternAnimation/{{Rio}} the film]], as the poachers capture the birds, who escape and set out to rescue Blu and Jewel. Subsequent levels are set in the movie's Rio de Janiero and have the birds targeting the marmosets instead of the usual pigs. Blu and Jewel are also available as ammunition in some levels.
* ''[[http://www.namcohigh.com/ Namco High]]'' is a DatingSim that stars characters from ''{{Galaga}}, {{Klonoa}}, RollingThunder, {{Homestuck}}'' and more. In a high school setting...
* In ''VideoGame/PersonaQShadowOfTheLabyrinth'', the full casts of ''Persona 3'' and ''Persona 4'' end up becoming involved in the mystery of the Labyrinth.
* ''HyruleWarriors'' for the WiiU is the world of Nintendo's ''Franchise/TheLegendOfZelda'' [[XMeetsY meets]] the combat heavy gameplay of Tecmo-Koei's ''DynastyWarriors''. The game is officially labeled as a non-canon SpinOff of the Zelda franchise, meaning it doesn't conflict at all with the official Zelda timeline, so the developers are given free range on how to go about incorporating established Zelda characters, items, and enemies into this specific game's world.
[[/folder]]

[[folder:Visual Novels]]
* Despite being an internally consistent [[TheMultiverse multiverse]], the {{Nasuverse}} only has crossovers in incredibly round-about ways. Part of the problem is, well, WordOfGod stated that some of the characters simply ''cannot'' exist in the same universe for {{Canon}} reasons.
** Zelretch was seen in the Prologue to ''VisualNovel/{{Tsukihime}}'' with a young Arcueid. He also appears for one scene in the "Heaven's Feel" route to ''VisualNovel/FateStayNight'', walking in from AnotherDimension to meet Rin.
** Aoko Aozaki spends time in the beginning of ''VisualNovel/{{Tsukihime}}'' with a young Shiki Tohno. Her sister, Tohko Aozaki, is the OlderAndWiser of (arguably) ''Tsukihime''-prototype, ''Kara no Kyoukai''. Despite each of them knowing a different Shiki (each possessing the Mystic Eyes) [[WordOfGod it's explicitly stated]] that Tohko and Arcueid cannot exist in the same universe (and most likely, Shiki Ryougi and Shiki Tohno can't, either).
*** Shiki T.'s eyes are [[AllThereInTheManual a genetic thing from the Nanaya]]. Shiki R.'s are really Mystic Eyes. I don't know ''what's'' up with Tohko and Arcueid.
**** It's more along the lines of "Tohko's goal contradicts with the existence of True Ancestor Arcueid", though Nasu hasn't really made it clear on ''why''. And Mystic Eyes are just... eyes with special powers. Many, many characters have them, just that there can't be more than one possessor of the Eyes of Death Perception.
**** Shiki's Eyes of Death Perception is different from the genetic eyes of the Nanaya. Since both Shikis are from closely associated families of assassin though, it might be related to genetic. However Ryougi's family does not possess special eyes. The reason why only one can exist might be due to the nature of those eyes. Given that they are potentially insanely powerful and you can't just have people running around with such things, it might be a case of TheChosenOne.
**** It's just chance. The Eyes of Death Perception have a rare chance of showing up in their respective families. It's not that they can't exist in the same universe, it's that the chances are ''very, very'' low.
***** It may not have been chance any more than Ryougi's selection as a Counter-Force for Alaya; would it be just an accident that she was equipped and proficient with the ability needed in the brief moment the Beast of Alaya possessed her?
* In ''VisualNovel/MajiDeWatashiNiKoiShinasai'', members of the [[TheyAreMyNobleMasters Kuonji household]] shows up in several places, as they live in the neighbouring area. In one of the routes they even spend the night in that mansion. Naturally, one of them mentions that Yukie has a [[ActorAllusion nice voice]].
[[/folder]]

[[folder:Web Comics]]
* The main character in ''Webcomic/HereWolf'' debuted in the comic book ''{{Horndog}}'', and there are occasionally crossovers from time to time.
* ''Webcomic/IrregularWebcomic'' does this from time to time, sometimes in ways you might not imagine.
* ''Webcomic/LeastICouldDo'' recently had a huge one with characters from every video game webcomic (and a few others), all fighting each other to the death. Rayne [[spoiler:died multiple times, but always came back due to them being clones.]] Combatants included ''Webcomic/DinosaurComics'', ''Webcomic/EightBitTheater'', ''Webcomic/LookingForGroup'', ''Webcomic/CtrlAltDel'', ''Webcomic/PennyArcade'', ''Webcomic/{{xkcd}}'', ''Webcomic/CyanideAndHappiness'', and many, ''many'' others. Also, John dressed as the ''Comicbook/GreenLantern'' and Rayne's car became a Franchise/{{Transformer|s}}. And he got it on with some superhero babes.
** Sadly, the long-awaited battle between [[Webcomic/EightBitTheater Black Mage]] and [[Webcomic/LookingforGroup Richard the Warlock]] never happened since they were apparently on the same side, but 's not to say it never will. You never know with Sohmer and Lar.
*** Props if you noticed [[spoiler: the background of the first ''8-Bit Theater'' in Rayne and John's apartment window on one of the pages.]]
* ''Webcomic/SomethingPositive'' (and all of Randy's other strips by proxy except for ''Super Stupor''), ''Webcomic/QueenOfWands'' (and ''PunchAnPie'' by proxy), ''PennyAndAggie'', ''Webcomic/QuestionableContent'', ''Scandal Sheet!'', and ''GirlsWithSlingshots'' are all part of the same webcomic universe. Using S* P as a node, this is the beginning of the Grand Unified Webcomic Universe.
** [[http://www.shortpacked.com/2010/comic/book-12/01-dominus-jacobus/davan/ And now]], ''Shortpacked!'' and the rest of the WalkyVerse by proxy. (Although a previous [[http://www.questionablecontent.net/view.php?comic=1550 two]]-[[http://www.shortpacked.com/2009/comic/book-10/03-the-comedy-laugh/coffeehouse/ sided]] crossover between ''Shortpacked!'' and ''Webcomic/QuestionableContent'' had already unofficially put it into the S*P Multiverse.)
* It's been established in ''TheInexplicableAdventuresOfBob'' that Molly likes to write {{crack|Fic}} crossover {{fan fic}}s, like ''Literature/TheBrothersKaramazov'' meet ''Literature/HaroldAndThePurpleCrayon'' (Harold uses his purple crayon to break Dmitri out of a Siberian prison). One of her fics got illustrated to appear on [[Webcomic/TheAdventuresOfDrMcNinja Dr. McNinja's]] website, [[http://drmcninja.com/wp-content/uploads/McNinj-2.jpg thusly.]]
** The strip itself has had brief cameos by characters from ''{{Melonpool}}, {{Zortic}},'' ''EverydayHeroes,'' and ''Zeera the Space Pirate.''
* One of the earliest webcomic crossovers was a week of strips in 1998 between ''UserFriendly'' and ''Webcomic/SluggyFreelance'' where Torg temps at the [=ISP=] while Riff ends up battling the Coffee Monster.
* ''Webcomic/EmergencyExit'' is quite famous for its ''very'' extensive crossover with ''ParallelDementia'', notably having a drastic effect on the plots of both series. It was also very, very long. ''Webcomic/EmergencyExit'' also had a crossover with BeyondReality before that (Though that crossover didn't really effect the plot at all) and later had a second crossover with ''ParallelDementia'' that consisted largely of Fall and Eddie having a conversation, with several big revelations made.
* ''Webcomic/{{Jix}}'' has at least two crossovers from the creator's other series Dragon City. Both of which involve stories told about encounters with dragons, both of which were also mentioned in Dragon City, but without the Jix characters. Both times it involved main characters.
* Also, in [[http://www.drunkduck.com/Dragon_City Dragon City]], there were four major crossovers from Jix. One was when an Ambis (the alien species from Jix) tried to take over the dragons' world, another instance when one of the villains tried to kill Erin because he thought the previous crossover was still disguised as her, one was when Jonas got kidnapped by one of Jix's minor villains, and the last was when Lauren and Jix saved Erin from her editor.
* In summer 2010, the world was introduced to an WebComic/AxeCop and [[Webcomic/TheAdventuresOfDrMcNinja Dr. McNinja]] crossover. And it was awesome.
* ''{{Fans}}'' had a crossover with ''PennyAndAggie'' recently, or at least the version of ''Penny and Aggie'' that exists in the Fans-verse. [[spoiler: Charlotte turns to dark magic during the story and after being taken into custody by Aegis, ends up reluctantly helping them in their fight against The Order.]]
* ''WebComic/NerfNow'' [[http://www.nerfnow.com/comic/603 explains the reasoning]] behind this.
* The MagickChicks[=/=]EerieCuties crossover is in full swing at the time of this writing.
* ''EvilPlanTheWebcomic'' had a brief and chilling crossover with the creator's other work [[http://sire.smackjeeves.com Sire]] as of Chapter 7.
* ''ComicStrip/WhatsNewWithPhilAndDixie'' throws in [[http://www.airshipentertainment.com/growfcomic.php?date=20090315 a few ideas]].
--> TabletopGame/{{Deadlands}} is a game combining two unconnected categories - [[TheWestern Western]] and {{Horror}}. As a result of the popularity of this refreshing juxtaposition, we can expect a slew of new games created by [[XMeetsY stitching together]] various "best selling" categories. Here's a preview...
* There's a crossover saga in ''Webcomic/SlimyThief'' where in each arc the main character, Aisha, interacts with other creator owned characters. Apparently portals are opening up in alternate dimensions and sucking characters into hers.
* A brief subtle cross over in ''Webcomic/TheWhiteboard'', a quantum coffee maker dinosaur from ''Webcomic/QuestionableContent'' pays a visit, [[http://www.the-whiteboard.com/autotwb1379.html here.]]
* ''[[Webcomic/EnsignSueMustDie Ensign Two: The Wrath of Sue]]'' takes this trope UpToEleven by having the cast traverse across most every alternate universe you can imagine. Characters and places of note are [[Series/DoctorWho the Tenth Doctor]], [[Franchise/{{Pokemon}} the Pokémon world]], [[Series/{{Sherlock}} Sherlock Holmes]], [[WesternAnimation/AvatarTheLastAirbender the world of Avatar]], and [[WesternAnimation/MyLittlePonyFriendshipIsMagic Ponyville]]. And that isn't even half of them.
[[/folder]]

[[folder:Web Original]]
* ''{{lonelygirl15}}'' crossed over with ''[=OpAphid v. Tachyon=]'' in season one and ''KateModern'' in season three.
* The feud between WebVideo/TheAngryVideoGameNerd and WebVideo/TheNostalgiaCritic.
** The Critic's [[Website/ThatGuyWithTheGlasses website]] decided to run it to the ground [[http://thatguywiththeglasses.wikia.com/wiki/Cameos quite often]], starting with the MassiveMultiplayerCrossover [[WebVideo/TGWTGYearOneBrawl brawl]] [[http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/nostalgia-critic/6719-1-year-anniversary-video celebrating TGWTG's first anniversary]]. Many of the crossover reviews are shot during production of the [[{{Kickassia}} other]] [[SuburbanKnights anniversaries]] or conventions where many are reunited (most notably MAGfest).
** Not only does [[WebVideo/TheSpoonyExperiment Doctor Insano]] end up in [[WebVideo/AtopTheFourthWall Linkara's]] videos often, he first appeared in one.
*** [[WebVideo/YugiohTheAbridgedSeries Bandit Keith]] also appears in a few of Spoony's videos, portrayed by LittleKuriboh.
** The ''WebVideo/EightiesDan'' Christmas special had a crossover with other characters on ''WebVideo/TheCinemaSnob''.
* ''WebAnimation/SuperMarioBrosZ'' crosses the universe of ''Franchise/SuperMarioBros'' with that of ''Franchise/SonicTheHedgehog''. And its one big love letter to Franchise/DragonBall.
* ''WebAnimation/HowItShouldHaveEnded'' gives their take on how the Film/{{Terminator}} series [[http://www.youtube.com/watch?v=bBBw9E2Q_aY&feature should end]]. With an [[Film/BackToTheFuture unexpected crossover]].
* LemonDemon's "UltimateShowdownOfUltimateDestiny".
* [[http://www.youtube.com/watch?v=u8g_MSPVBk0 Roosterteeth]] and [[http://www.youtube.com/watch?v=LwVIJFGzptU Mega64]] ''Finally'' teaming up this week (as of Monday, November 29th, 2010). Though they have run into each other [[http://www.youtube.com/watch?v=wCujys4QAhw before.]]
* ''WebVideo/ImAMarvelAndImADC''.
* The AntiClicheAndMarySueEliminationSociety actually uses Crossovers as a gadget. It can temporarily fuse two fandoms together, but it isn't used all that often.
* A few of the AbridgedSeries' have crossovers. Examples include Ghost Nappa appearing in a ''WebVideo/YuGiOhTheAbridgedSeries'' video, and Yami Yugi appearing at the end of the ''[[WebVideo/DragonBallAbridged Dragon Ball Kai Abridged]]'' video.
* The fifth episode of ''NonePiece'' is a crossover with ''CodeMent'' (both are made by Purpleeyeswtf and has the sub-title of "CodeMent episode 14.5").
** One episode of ''CodeMent'' said that ''HellsingAbridged''[='s=] Alucard was ''CodeMent''[='s=] Lelouch's uncle and ''WebVideo/DragonBallAbridged'''s Nappa makes a short appearance.
** ''NonePiece'' received a crossover with ''NarutoTheAbridgedComedyFandubSpoofSeriesShow'', ''CodeMent'' and ''WebVideo/YuGiOhTheAbridgedSeries'' in the "Ninjas v Pirates" video.
* ''Franchise/FinalFantasy'' + ''VideoGame/DeadOrAlive'' = ''DeadFantasy''
* ''WebVideo/EpicMealTime'' has had several, including the likes of {{deadmau5}} and WebVideo/{{SMOSH}}.
-->'''Ian''': So I heard you ordered the collabo.\\
'''Harley''': I hate these guys!\\
'''Anthony''': Yeah, we hate you, too. This is for the children. [[ThinkOfTheChildren Think about the kids]].\\
'''Ian''': Yeah. C'mon, asshole.
* The "WebVideo/SlenderManMythos" has an enormous amount of crossovers. http://imgur.com/0XSOjTg
* Some of the characters in ''WebVideo/VaguelyRecallingJoJo'' are replaced with various characters from other works because the fan is vaguely recalling the series, so he fills in the things he does not remember with the things he remembers from the other series. Sometimes, they are used in {{funny background event}}s
** Magician's Red is now a [[VideoGame/PokemonRubyAndSapphire Blaziken]] and GEB happens to be its weakness because GEB is a Water-type.
** Hermit Purple is [[VideoGame/MegaMan6 Plant Man]].
** [[VideoGame/GuiltyGear Faust]] is the doctor that treats Joseph.
** Nena is replaced with [[VideoGame/GuiltyGear Bridget]] and Empress is replaced with Roger the Teddy Bear.
** Jesus and Buddha from ''Manga/SaintYoungMen'' can be seen in the background when Jotaro is confronting Enya.
** ZZ is replaced with [[VideoGame/FZero Captain Falcon]].
** [[VideoGame/YumeNikki Madotsuki and Seccom Masada]] are background characters during the Death 13 arc.
** [[VideoGame/{{Darkstalkers}} Hsien-Ko]] is the cashier at the Egyptian McDonalds.
** Blossom of the WesternAnimation/PowerpuffGirls is High Priestess and Polnareff becomes Prof. Utonium during an ArtShift.
** Part 24 starts off with a parody of [[LiveAction/TwentyFour 24]].
** The Speedwagon Foundation workers are replaced with [[VideoGame/GuiltyGear Zato-1]] (who is Rubber Soul in disguise), Manga/BlackJack, Pinoko, Faust, [[Manga/OnePiece Dr. Kureha]] and [[Anime/DragonBallZ Broly]].
** Iggy turns the Fool into [[{{Pokemon}} Regirock]] and pummels N'Doul into the ground.
** Khnum is now Oingo's [[Series/KamenRider belt buckle]]
** Chaka is replaced with [[Manga/RurouniKenshin Makoto Shishio]] and he fights off characters from his series.
** Bast is replaced with [[VideoGame/BlazBlue Taokaka]] and the old lady is replaced with [[LightNovel/SpiceAndWolf Holo the Wise One]].
** [[VideoGame/CastlevaniaRondoOfBlood Richter Belmont]] and [[VisualNovel/{{Tsukihime}} Ciel]] provide Jonathan with some backup.
** Will A. Zeppeli punches [[Manga/SoulEater Eruka]] and [[VideoGame/TouhouProject Suwako]] out.
** VideoGame/DukeNukem's soul is in Daniel J. D'Arby's collection.
** [[VideoGame/{{Skullgirls}} Squigly]] is one of the wedding party-goers
** [[VideoGame/SkullGirls Double]], [[VideoGame/GuiltyGear Dr. Baldhead]], [[Manga/{{Yugioh}} Tom]], and [[VideoGame/TouhouProject Nazrin]] are in Telence T. D'Arby's doll collection.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/DextersLaboratory'', Justice Friends and Monkey with each other, but also one episode with DynomuttDogWonder.
* ''WesternAnimation/LiloAndStitchTheSeries'' had four episodes crossing over with another Disney series each - one for ''WesternAnimation/KimPossible'', ''WesternAnimation/{{Recess}}'', ''WesternAnimation/AmericanDragonJakeLong'', and ''WesternAnimation/TheProudFamily''.
* Creator/HannaBarbera did this a ''lot''. ''Franchise/ScoobyDoo'' was usually the host show. Other Hanna-Barbera examples are ''{{Laff-a-Lympics}}'' and ''Yogi's Gang''.
** ''WesternAnimation/TheJetsonsMeetTheFlintstones'' was one of the few movies they did of this.
** Perhaps the most notorious use of this was ''WesternAnimation/ScoobyDooInArabianNights''.
** There was a multi-episode arc of ''WesternAnimation/SpaceGhost'' where the title character went up against the Council of Doom, each of whom managed to defeat Space Ghost and banish him to some other realm/time/planet, just so the other Hanna-Barbera heroes of that setting could help save him. This allowed Space Ghost to team up with the Herculoids, Mightor, WesternAnimation/{{Shazzan}}, and Super Moby Dick.
** The 1981-82 Hanna-Barbera show ''WesternAnimation/SpaceStars'' was also built around this trope. Each hourlong episode would have a short eight- to 10-minute segment starring one of the show's hero teams: SpaceGhost, TheHerculoids, the Teen Force, and Astro from ''TheJetsons''. The last five to 10 minutes of the show would then be a "Space Stars Finale" team-up between two or more of the groups against a common foe.
** ''WesternAnimation/JohnnyBravo'', "Bravo-Dooby-Doo": Johnny hitches a ride with the cast of ''WesternAnimation/ScoobyDoo'' to his great-aunt's mansion. At the end, WesternAnimation/SpeedBuggy shows up.
*** A later episode has a past incarnation of Johnny meeting Fred Flintstone.
*** The later seasons had a lot of episodes revolving around him meeting other cartoon characters. Blue Falcon, Huckleberry Hound, Music/WeirdAlYankovic...
** WesternAnimation/YogiBear and Boo Boo once turned up in a ''[[TheFlintstones Flintstones]]'' episode. Apparently, those bears are really, really old. Or able to time-travel. Or [[BreadEggsBreadedEggs both]].
** A rare live-action to animation crossover took place on ''TheFlintstones'' when [[Series/{{Bewitched}} Samantha and Darrin moved in next door]] (both series aired on ABC, and ''Bewitched'' was made by ''The Flintstones'''s (then) distributor [[ColumbiaPictures Screen Gems]]). How old ''is'' Samantha, anyway?
** Ironically averted with several of the later Flintstone shows, such as ''FredAndBarneyMeetTheThing''. They never actually met, it was just some Flintstone shorts mixed with shorts with [[ComicBook/FantasticFour the Thing]].
* ''WesternAnimation/TheVentureBrothers'' started off as a parody of ''WesternAnimation/JonnyQuest''. Eventually, characters from ''Jonny Quest'' started showing up on the show... or at least demented versions of them.
* MattGroening's shows ''WesternAnimation/TheSimpsons'' and ''WesternAnimation/{{Futurama}}'' tend to crossover for brief instances, including in the futuristic ''Simpsons'' episode "Future Drama".
-->''[Homer and Bart accidentally pick up Bender of Futurama while driving through a portal tunnel]''
-->'''Bender:''' ''Oh boy! You guys are gonna be my best friends, right?''
-->'''Homer:''' ''You wish, loser!''
-->''[Throws Bender out the car.]''
** Then there was the time ''WesternAnimation/TheSimpsons'' crossed over with ''WesternAnimation/TheCritic'', which Matt Groening was against since ''The Critic'' has a completely different style and therefore did not have Groening's involvement. Because of this, Groening's name is not shown in the credits for "A Star is Burns" (making it the only instance that this has happened). However, Jay Sherman made cameos in two other episodes that ''did'' have Groening's name in the credits.
** And one of the show's couch gags featured ''WesternAnimation/TheSimpsons'' meeting their ''TracyUllmanShow'' counterparts sitting on the sofa.
* The [[WesternAnimation/TeenageMutantNinjaTurtles1987 1987]], [[WesternAnimation/TeenageMutantNinjaTurtles2003 2003]], and [[ComicBook/TeenageMutantNinjaTurtlesMirage original comic book]] versions of the ''TeenageMutantNinjaTurtles'', in ''TurtlesForever''.
** Also, [[ComicBook/UsagiYojimbo Miyamoto Usagi]] appeared in both TMNT cartoon series.
* ''{{Spider-Man The Animated Series}}'' had a crossover with the 90's WesternAnimation/{{X-Men}} animated series. It was considered a big deal because it was a completely different animation studio involving the then current roster from X-Men in a show that was not their own. Even more impressive was the effort put in to keeping all the same cast (save for one, Gambit, presumably for contractual or scheduling reasons) for the sake of continuity. Even more fun, the crossover remains in continuity for Spider-Man, as {{Storm}} returns during the series' adaptation of the ''SecretWars'' crossover event.
** The Marvel cartoons from around this era were frequently cameo-ing in each other's series, as well (though it's hard to know if they were the same characters as the other cartoons; they all take place in ''a'' MarvelUniverse, where ''a'' Spider-Man, Human Torch, etc. would likely exist somewhere.) You never know who'll be briefly shown watching from a rooftop, or looking up at the PillarOfLight in the distance when something ''really'' big goes down. Also, Comicbook/IronMan, Comicbook/FantasticFour, Comicbook/IncredibleHulk, etc. guest starred in each other's shows often enough to make the 90s Marvel cartoons a [[{{DCAU}} Diniverse]] of sorts - you can connect the dots through all of them.
* It was a bit more subtle than most of these examples, but ''Franchise/GIJoe'' crossed over with ''WesternAnimation/TheTransformers'' in the episode "Only Human". A masked character named "Old Snake" (voiced by Chris Latta) helps the BigBad of the week with a machine to put Transformers' minds into synthetic human bodies. After the plan inevitably fails, Old Snake escapes and idly muses that "they just don't make terrorists like they used to", then raises his arms and yells "COBRAAAAAA!", ending in a coughing fit.
** At the time the episode aired, it initially had a hard time fitting in with the events of ''WesternAnimation/GIJoeTheMovie'', where Cobra Commander was transformed into an humanoid yellow cobra-man and then finally doomed to a fate as an actual non-anthropomorphic cobra. However in "Only Human", Cobra Commander is obviously humanoid and visible from his torn-up gloves are hands covered in yellow scales; presumably in reference to when he was transformed into a yellow-scaled snake man in the movie. Through what was likely coincidence, this seemingly erroneous depiction of a future Cobra Commander was later made to make sense: In 1989 (three years after "Only Human" originally aired), [=DiC=] produced a continuation of the ''G.I. Joe'' animated series, beginning with the five-part mini-series "Operation: Dragonfire". In this mini-series, Cobra Commander is still just a snake, but he's eventually returned into a humanoid form (specifically the snake-man form) by the Baroness.
** And from the same season, recurring character Marissa Faireborne was obviously the daughter of Flint (Dashiell R. Faireborne) and Lady Jaye. The DVD commentary for ''WesternAnimation/TransformersTheMovie'' finally admitted this officially.
*** One "cameo" was made when a hologram version of an aged Flint was used in order to trick Marissa in one episode.
** In a more meta case, all of Marvel/Sunbow's cartoons of TheEighties (''Transformers, G.I. Joe, WesternAnimation/{{Inhumanoids}}, WesternAnimation/{{Jem}}'' etc.) were tied into each other via Hector Ramirez, an {{Expy}} of television reporter Geraldo Rivera. Hector would show up just about any time a story needed a television reporter, suggesting the shows all resided in a shared universe.
* The all-too-trippy anti-drug {{PSA}} ''CartoonAllStarsToTheRescue''?
* ''WesternAnimation/TheFairlyOddParents'' and ''WesternAnimation/TheAdventuresOfJimmyNeutron'' crossed over three times in the JimmyTimmyPowerHour Trilogy. This was an interesting exercise because one show is ThickLineAnimation while the other is computer-generated, requiring the characters to be [[MediumBlending re-animated in the appropriate style]] while in the "other" show's universe.
** Also notable for the "MagicVersusScience" theme in all three specials.
** Eventually, this led to the ''NicktoonsUnite'' video game series, which had those three specials as their basis (and made some {{continuity nod}}s towards them).
* Creator/CartoonNetwork [[http://www.youtube.com/watch?v=Lt074nJUthI has done]] [[http://www.youtube.com/watch?v=aji96i_z7xE many promo spots]] [[http://www.youtube.com/watch?v=GlbAGOIWuB8 for itself]] [[http://www.youtube.com/watch?v=Pzth7hcueTs using odd]] [[http://www.youtube.com/watch?v=H8WPmNYDtU0 and unusual crossovers]] such as Shaggy from ''WesternAnimation/ScoobyDoo'' and Droopy Dog discussing what they call ''The Pound Puppies'' in France while driving a (live-action) convertible in (live-action) L.A., à la ''Film/PulpFiction''.
** Another showed a group of sidekicks discussing their position at [[WesternAnimation/JonnyQuest Hadji's]], while [[WesternAnimation/CowAndChicken Chicken]] protested that [[InsistentTerminology he was a co-star, not a sidekick]]. "My name is in the title, for cryin' out loud!"
** There's one line of promos they did called "Perfect as It Is", which show that certain cartoon character cross pairings just don't work out right. Take a look at "[[http://www.youtube.com/watch?v=X23fDk_UmT4 Tom and Speedy]]" (there was also "Road Runner & Dexter" and "Batman and Inch High Private Eye".
** Creator/CartoonNetwork liked the concept of [[http://www.youtube.com/watch?v=6juEOmOaYVk having their characters]] [[http://www.youtube.com/watch?v=EkbdAKna3EU in one workplace]]. It's even shown on the [[http://www.youtube.com/watch?v=1AH6QWK6z6Q Friday Nights]] intro.
** "Tom and Speedy" could work. After all, Speedy Gonzales' nemesis is Sylvester, which is just Tom with a lispy voice.
** The WesternAnimation/{{Superfriends}} and WesternAnimation/ThePowerpuffGirls [[http://youtu.be/2-8lAEB_1NE here]].
** Yet another had Fred Flintstone, Chicken, and WesternAnimation/ThundarrTheBarbarian returning from lunch and futilely searching for a parking space. Thundarr is incensed that Papa Smurf has a reserved space:
--->'''Thundarr:''' Can no leader go untainted?!
*** You can also see them [[ContinuityNod still going to work together]] in the Friday nights intro.
* A ''WesternAnimation/{{Ben 10}}'' and ''WesternAnimation/GeneratorRex'' crossover titled ''[[WesternAnimation/Ben10GeneratorRexHeroesUnited Ben 10/Generator Rex: Heroes United]]'' aired on Creator/CartoonNetwork during Thanksgiving 2011, as a "special, extended" episode of Generator Rex. A clip was shown at Comic-Con 2011, in which Ben is seen entering Rex's world through a portal, and is at first [[LetsYouAndHimFight mistaken for an EVO]].
** The ''WesternAnimation/Ben10Omniverse'' epsidoe "T.G.I.S." sees the title characters of ''WesternAnimation/TheSecretSaturdays'' appear, teaming up with Ben and Rook. Unlike the crossover with ''Generator Rex'', the team-up is presented as (as per WordOfGod by Jay Stephens, the creator of ''TSS'') as them existing in the same universe.
* ''WesternAnimation/{{Rugrats}}'' and ''WesternAnimation/TheWildThornberrys'' had a feature-film crossover.
* ''WesternAnimation/HarveyBirdmanAttorneyAtLaw'' is nearly built around this trope, with most episodes involving Harvey's law firm taking the case of some 1960s or 1970s {{Hanna-Barbera}} cartoon character.
* ''WesternAnimation/LiloAndStitchTheSeries'' has crossed over with several other DisneyChannel original cartoons, including ''WesternAnimation/TheProudFamily'', ''WesternAnimation/KimPossible'', ''WesternAnimation/AmericanDragonJakeLong'', and ''WesternAnimation/{{Recess}}''.
* A crossover of ''WesternAnimation/DarkwingDuck'' with ''WesternAnimation/ChipNDaleRescueRangers'' was planned but was never produced beyond a few voices. A quick clip of these voices can be heard in the ''Darkwing'' episode "Twitching Channels".
** ''Darkwing Duck'' did have ''WesternAnimation/DuckTales''' Gizmoduck as a reoccurring character though.
*** And in one episode, the entire recurring villain cast from ''WesternAnimation/DuckTales'' showed up in one scene.
** Also in the same vein, ''Disney/{{Hercules}}'' crossed over with ''WesternAnimation/AladdinTheSeries''.
** ''PepperAnn'' is the only animated Disney television show to ever be covered in ''HouseOfMouse''.
* ''WesternAnimation/{{Freakazoid}}'', ''WesternAnimation/{{Animaniacs}}'', and ''WesternAnimation/PinkyAndTheBrain'' did a crossover in [[http://www.youtube.com/watch?v=2NLrjVnMO7k this]] clip.
** ''WesternAnimation/{{Animaniacs}}'' sometimes did crossovers with other cartoons on its show, including one incident where Franchise/{{Batman}} rescued them from an angry fairy (as Yakko's Shakespeare recital had foretold). Coincidentally, ''WesternAnimation/BatmanTheAnimatedSeries'' aired right afterward.
*** One ''Animaniacs'' episode featured internal crossovers, with Dot and Slappy Squirrel trading places, as well as shorts featuring Mindy and the Brain, Pinky and the Cat (Rita), and Pesto and Runt.
* ''WesternAnimation/TinyToonAdventures'' was also in this same mold (considering both shows were from the same producer, Creator/StevenSpielberg). In fact, some ''WesternAnimation/{{Animaniacs}}'' characters made quick cameos in the two prime-time ''Tiny Toons'' specials in 1994.
** In the Tiny Toons direct-to-video movie ''How I Spent My Vacation,'' Buster and Babs are saved from a fall by {{Superman}}. The Bunnies promptly told the Man of Steel to get his own video.
** The episode "Fields of Honey" featured the forgotten ''LooneyTunes'' duo [[BoskoTheTalkInkKid Bosko and Honey]].
* Additionally, the ''WesternAnimation/LooneyTunes'' characters made several guest cameos on ''WesternAnimation/{{Animaniacs}}'' and ''WesternAnimation/{{Histeria}}''.
** Buddy, the failed successor to Bosko, appeared in ''The Warners 65th Anniversary Special''.
* [[WesternAnimation/SupermanTheAnimatedSeries Superman]] and [[WesternAnimation/BatmanTheAnimatedSeries Batman]] (in their Creator/BruceTimm[=/=]Creator/PaulDini incarnations) crossed over multiple times, starting with the ''World's Finest'' three-parter. Eventually, this led to the {{DCAU}}, which had this trope as its foundation.
* ''WesternAnimation/SouthPark'' did a Cartoon Crossover where Mr. Garrison sought therapy from [[WesternAnimation/DrKatzProfessionalTherapist Dr. Katz]].
** Interestingly, ''Magazine/{{Mad}}'' did the very same crossover earlier.
** Also the "Imaginationland" trilogy could also be considered something of a massive crossover as well.
** Bart Simpson of ''WesternAnimation/TheSimpsons'' appears in the two-part "Cartoon Wars". There are even references to his series, including mentioning that he stole the head off a statue once (a reference to the episode "The Telltale Head" and him saying "Cowabunga!" (in ''WesternAnimation/TheSimpsons'' episode "Behind the Laughter", Bart, after a sketch written by Homer in which Bart has the line "Cowabunga!", remarks with irritation that he's never said "Cowabunga" in his life).
* "WesternAnimation/{{The Grim Adventures|OfBillyAndMandy}} of [[WesternAnimation/CodenameKidsNextDoor the KND]]" was really more of a ''Kids Next Door'' episode with ''Billy and Mandy'' characters, but many plot points rely on the main characters of the latter (such as the AppliedPhlebotinum). There were also many a ShoutOut to other Cartoon Network original properties, including a brief ArtShift to the world of ''WesternAnimation/EdEddNEddy''.
** Fred Flintstone made a guest appearance in an episode of ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' strangely enough, though no one ever referred to him by name.
** He was referred to as "Jake Steele!" and spoke only in "Yabba dabbas". [[spoiler:That is, until the end of the episode]].
** In the same light, WesternAnimation/YogiBear, Boo Boo, and Scooby-Doo showed up in GABM as well.
* WesternAnimation/InspectorGadget once [[http://www.youtube.com/watch?v=6pduYbyIGqM#t=1m14s paid a visit]] to the live-action half of ''The Series/SuperMarioBrosSuperShow'', played by a svelte young MauriceLaMarche.
* An arc of ''WesternAnimation/StreetSharks'' dealt with them teaming up with the ''WesternAnimation/ExtremeDinosaurs''.
* ''AceVentura'' and ''WesternAnimation/TheMask'' crossed over on two episodes: the final episode of ''The Mask'' ("The Aceman Cometh") and the last episode of ''Ace Ventura'''s second season "Have Mask, Will Travel."
* Back in 1972, ''The ABC Saturday Superstar Movie'' anthology series featured ''WesternAnimation/LooneyTunes'' characters in a {{Filmation}} production, ''DaffyDuck and PorkyPig MeetTheGroovieGoolies'' -- an atypical crossover of characters from different animation studios. (Consider that veteran WB animators, such as Ted Bonnicksen, Virgil Ross, and Norm [=McCabe=] were all working at Filmation at the time.)
** Earlier in the series, King Features had produced a film, ''WesternAnimation/TheManWhoHatedLaughter'', which featured a crossover of characters such as ComicStrip/{{Blondie}}, ComicStrip/BeetleBailey, ComicStrip/FlashGordon, ComicStrip/HiAndLois, The Katzenjammer Kids, ComicStrip/MandrakeTheMagician, ComicStrip/ThePhantom, ComicStrip/{{Popeye}}, ComicStrip/PrinceValiant, and Snuffy Smith from the syndicate's various comic strips.
** Another King Features example: The main characters of ''WesternAnimation/DefendersOfTheEarth'' (King's action/adventure heroes Flash Gordon, The Phantom and Mandrake the Magician) were all from previous series, making the entire series a Crossover.
** Parodied by ''WesternAnimation/RobotChicken'': "WesternAnimation/FlashGordon! ComicStrip/ThePhantom! ComicStrip/MandrakeTheMagician! These three heroes united by a quest for justice and the coincidence they're all owned by King Features Syndicate now defend the Earth as... the Defenders of the Earth!"
* ''WesternAnimation/AlvinAndTheChipmunks'' once had a crossover with... ''WesternAnimation/AlvinAndTheChipmunks''. Or rather, the 1980s cartoon chipmunks got to meet their 1960s counterparts in a manner involving time travel, similar to ''TurtlesForever''.
* Creator/SethMacFarlane's ''WesternAnimation/FamilyGuy'', ''WesternAnimation/AmericanDad'', and ''WesternAnimation/TheClevelandShow'' have had characters make occasional appearances, but the first true crossover among them is ''Night of the Hurricane'', in which Hurricane Flozell affects all three shows and the actual "crossing over" occurs after the hurricane when Cleveland Brown, Stan Smith and Peter Griffin get involved in a stand-off.
* The ''WesternAnimation/BatmanTheAnimatedSeries'' vs ''Anime/{{Pokemon}}'' promos on KidsWB. [[http://www.youtube.com/watch?v=O4e3CDc1r5k Part One]] [[http://www.youtube.com/watch?v=uqH5WZhaKEw and two.]]
** Several other promos running on KidsWB featured similar interactive crossovers between the block's various shows.
* Building on the Scooby example above, the 14th episode of ''WesternAnimation/ScoobyDooMysteryIncorporated'' had Scooby team up with WesternAnimation/{{Captain Caveman|AndTheTeenAngels}}, WesternAnimation/{{Jabberjaw}}, WesternAnimation/TheFunkyPhantom, & WesternAnimation/SpeedBuggy in an AffectionateParody of old Hanna-Barbera cartoons.
** Blue Falcon, Dynomutt, Benton Quest, Race Bannon, and the cast of the 1967 ''Moby Dick'' cartoon also appeared.
* It seems that one of the animators that exist in ''WesternAnimation/TheClevelandShow'' created an animated version of a Na'vi from ''Film/{{Avatar}}''.
** Comic Book Guy from ''WesternAnimation/TheSimpsons'' cameo in one episode.
-->"WORST. CAMEO. EVER!"
* ''The Simpsons'' is confirmed to have crossovers with ''Family Guy'' and ''Futurama''.
* An episode of ''WesternAnimation/TheZetaProject'' crossed over with ''WesternAnimation/BatmanBeyond'', justified in this case as the former was a spinoff of the latter. (Due to Bob Kane's contractual billing being what it is, this is also the only episode where the opening titles omit the "Created by Robert Goodman" credit - the end credits specify Kane's being behind Batman, with Goodman being behind the characters for the spinoff.)
* RankinBassProductions did it with ''Rudolph and Frosty's Christmas in July'', combining Rudolph with ''WesternAnimation/FrostyTheSnowman'', ''Frosty's Winter Wonderland'', ''Rudolph's Shiny New Year'', and it appears that ''WesternAnimation/SantaClausIsCominToTown'' and ''WesternAnimation/TheYearWithoutASantaClaus'' may figure in, but mostly in dialogue references rather than character appearances. Strangely, there were never any crossovers with characters from the original ''WesternAnimation/RudolphTheRedNosedReindeer'' special -- they only appeared again in ''Rudolph and the Island of Misfit Toys''.
* [[WesternAnimation/HeManAndTheMastersOfTheUniverse1983 He-Man]] and [[WesternAnimation/SheRaPrincessOfPower She-Ra]] did this more than once, as special episodes. Made sense, since they were siblings, but every time it happened it was a big deal. The two would do their transformation sequences simultaneously, making for a doubly psych-up scene. Strangely[[note]] or not, if you're a cheap scene-recycling animation house[[/note]] though, despite being in the same place at the time, they would then each appear in front of their respective castles, which were located in different countries.
* ''EekTheCat'', it would seem, [[SharedUniverse shares a universe]] with ''Series/TheXFiles''; the episode "Eek Space 9" features cameos by Mulder and Scully (several years before ''WesternAnimation/TheSimpsons'') - an alien ship crashes into Scully's office and she screams that he was right all along [[spoiler: ([[HilariousInHindsight a not inaccurate prediction of how her character turned out on the live action show]])]]! And yes, they ''are'' voiced by Messrs. Duchovny and Anderson, which makes it even funnier.
* The [[DisneyChannel Disney Junior]] preschool shows ''WesternAnimation/SpecialAgentOso'' and ''WesternAnimation/HandyManny'' had a CrossOver called "The Manny with the Golden Bear," in which Oso called in Handy Manny when he had to help a kid who had a broken bike.
* The show HouseOfMouse was all about Disney animated characters going the house to watch various acts.
* 'Victor & Hugo - Bunglers in Crime' - Many times, either in reference or in guest stars. Count Duckula, Igor, Nanny, Hawkeye Soames and Dr. Potson (from 'Count Duckula') Danger Mouse, Colonel K, Baron Greenback, Nero and Stiletto (from Danger Mouse) and even a nod to Badger from 'Wind in the Willows. It seems fitting since 'Victor & Hugo' were a spin-off from 'Count Duckula' who in turn span off from 'Danger Mouse.'
* [[WesternAnimation/AdventureTime Finn and Jake]] appeared on an episode of {{WesternAnimation/Futurama}} [[http://www.youtube.com/watch?v=fz4tTZ4TsGA here]].
[[/folder]]

to:

!Examples

[[foldercontrol]]

[[folder:Anime and Manga]]
!Examples:
[[index]]
* Creator/GoNagai has frequently crossed their different works (mainly his HumongousMecha series) over since the seventies. Some of the main instances are:
** ''Anime/MazingerZ'' and ''Manga/{{Devilman}}'' in Mazinger tai Devilman movie.
** ''Anime/GreatMazinger'' and ''Manga/GetterRobo'' in the movies: Great Mazinger vs GetterRobo, and Great Mazinger vs Getter Robo G.
** Great Mazinger and ''Anime/UFORoboGrendizer'' in the movie: Great Mazinger vs Grendizer
** Great Mazinger, Getter Robo and ''Anime/UFORoboGrendizer'' in the movie: Grendizer, Getter Robot G, Great Mazinger: Kessen! Daikaijuu.
** Mazinger Z, Devilman and ''Manga/ViolenceJack'' in the CBCharaGoNagaiWorld OVA series.
** Mazinger Z, Great Mazinger, UFO Robo Grendizer, Getter Robo and ''Anime/KotetsuJeeg'' in the SuperRoboRetsuden manga penned by KenIshikawa.
** Mazinger Z, Great Mazinger, Grendizer, Getter Robo G, Kotetsu Jeeg, ''GroizerX'', ''PsychoArmorGovarian'', ''GodMazinger'' and ''Anime/{{Mazinkaiser}}'' [[http://www.youtube.com/watch?v=IdPgpgZPQl8 in an promotional video]].
** Mazinger Z, Great Mazinger, UFO Robo Grendizer, Getter Robo, Getter Robo G, Devilman and Cutey Honey in the Dynamic Heroes e-manga (also known as Nagai Go Manga Gaiden - Dynamic Heroes or Go Nagai manga heroes crossover collection - Dynamic Heroes), an e-manga released in 2004 and later compiled in tankoubon.
** Getter Robo and Devilman in the "Devilman vs Getter Robo" manga. At the end of it, Akira and Miki lampshade the trope, joking about whom they will visit the next time.
CrossOver/AnimeAndManga
* For the 9th anniversary of the MMORPG MapleStory ''TowerOfGod'' author was asked to make a vignette in which each property's respective heroes faced off against each other.
CrossOver/AsianAnimation
* The mangaka group Creator/{{CLAMP}} have crossed their works over to the [[CanonWelding point that now they are all in one big, weird world]]. Some of these are significant to the plot, many seem to be just for fun. A frequent crossover element is the Clamp Campus, a gigantic private school that shows up in ''CLAMP Campus Detectives'', ''[[Manga/{{X1999}} X/1999]]'', ''Dukylon: CLAMP Defenders'', and ''Man of Many Faces''. Characters from ''Manga/{{Chobits}}'' make an appearance in ''{{Kobato}}''. The protagonist of ''TokyoBabylon'', Sumeragi Subaru, shows up in ''X/1999''. Even their "joke" series ''{{Miyuki-chan in Wonderland}}'' contains crossovers. In one story, Miyuki ends up as the Damsel In Distress in ''X/1999''. In another, she ends up playing (strip) {{Mahjong}} with other characters from CLAMP works. And there are the tribute music videos ''CLAMP in Wonderland'' and ''CLAMP in Wonderland 2'' which have segues between all of their series to date.
** Then there is ''Manga/TsubasaReservoirChronicle''. The entire basic '''premise''' is being an ''AlternateUniverse'' ''MassiveMultiplayerCrossover '' with characters from most of CLAMP's works showing up, often in different contexts from their original portrayal, such as characters from opposing sides of ''[[Manga/{{X1999}} X/1999]]'' hanging around the same cafe. Two of the main characters are alternate versions of the main characters from ''Manga/CardcaptorSakura''. '''AND''' it is the sister series to ''Anime/XxxHoLic''. The plots of the two series are so intertwined that they are essentially two vantage points on the ''same'' story.
CrossOver/{{Comics}}
* The different stories NasuVerse are all colliding in a hilarious new AffectionateParody called ''Anime/CarnivalPhantasm''. The first episode featured the characters of ''VisualNovel/FateStayNight'' finding out that the Holy Grail War had become a game show. Numerous people from throughout the NasuVerse can be seen in the audience.
CrossOver/FanWorks
* Speaking of NasuVerse, in 2010, the main writer of the ''LyricalNanoha'' franchise has produced two crossover one-shot mangas, ''VisualNovel/FateStayNight×Anime/MagicalGirlLyricalNanoha'' and ''Anime/MagicalGirlLyricalNanoha×Manga/FateKaleidLinerPrismaIllya''. The titles are rather self-explanatory.
CrossOver/{{Films}}
* CrossEpoch, a special manga where ''Franchise/DragonBall'' and ''Manga/OnePiece'' crossed over.
** There are also separate anime and manga crossover specials of ''Manga/{{Toriko}}'' and ''Manga/OnePiece''.
** And now there is going to be an OVA crossover with all three.
CrossOver/{{Literature}}
* In the manga ''Manga/{{Digimon V-Tamer 01}}'' are a total of 3 non canon crossovers, each being about a hero of the current digimon anime series being space warped and ending up battling an extremely powerful digimon together with Taichi and Zero.
CrossOver/LiveActionTV
* In honor of Shounen Sunday's 50th anniversary, the publisher released a DVD including three {{OVA}}s for their three most popular animes: ''Manga/InuYasha'', ''Manga/UruseiYatsura'', and ''Manga/RanmaOneHalf''. The DVD also included [[http://www.youtube.com/watch?v=8bhBU07b2YM&feature=related this]] animated short, where the main characters of the three series met up. HilarityEnsues.
CrossOver/{{Mythology}}
* ''Anime/{{Voltron}}: The Fleet of Doom'', a TV special made for American audience which had Lion Voltron and Vehicle Voltron working together to battle the allied forces of King Zarkon and the Drule Empire.
CrossOver/ProfessionalWrestling
* ''Franchise/LupinIII'':
** One could argue this is the premise of the series itself: Lupin from ''Literature/ArseneLupin'', Jigen is Creator/JamesCoburn from ''Film/TheMagnificentSeven'', Goemon is descended from UsefulNotes/IshikawaGoemon, Fujiko was the DisposableLoveInterest from ''Film/JamesBond'', Zenigata is descended from ''Zenigata Heiji Covers all of Edo''.
** ''Anime/LupinIIIVsDetectiveConan'', a crossover movie with... you guessed it ''Manga/DetectiveConan''. Not only works, but also feels like a remake of Anime/TheCastleOfCagliostro. Go figure. Happening again with ''Anime/LupinIIIVsDetectiveConanTheMovie''.
** Lupin and his gang appeared in ''[[Manga/{{Kochikame}} Super Kochikame]]'', a special manga volume for Kochi's 30th anniversary in 2006. The Lupin segment was co-authored by Osami Akimoto and Monkey Punch.
CrossOver/{{Radio}}
* One episode of ''Manga/DragonBall'' took place in [[Manga/DoctorSlump Penguin Village]].
** And Manga/DoctorSlump's 1997 remake anime has Goku visits Penguin Village. The different is that Arale is now a main character while Goku is a guest star, and ArtEvolution.
CrossOver/TabletopGame
* In one episode of the 1980s ''Anime/{{Astroboy}}'', the titular robot is taken back in time, along with his sister Uran, the one and only Manga/BlackJack and the doctor's assistant/companion Pinoko, in order to save the main character from ''Manga/PrincessKnight. Good ol' Tezuka mix-and-match.
CrossOver/{{Theatre}}
* Leiji Matsumoto's works. Like with Creator/{{CLAMP}} everything is in the same universe (Yamato and Harlock and Maetel and Emeraldas and the Queen Millennium...) but details do not match (Tenshiro died in three different ways already).
CrossOver/VideoGames
* ''Manga/UntilDeathDoUsPart'' has characters and organizations from ''Manga/YamiNoAegis'', by a different author.
CrossOver/VisualNovels
* ''PrettyCureAllStars'' crosses over all the existing Pretty Cure series in one big movie. This has gone from one movie teaming four teams to ''five'' movies featuring ''eight'' teams.
CrossOver/{{Webcomics}}
* ''Anime/TurnAGundam'' acts as one for all of the Gundam shows that came before it. Universal Century mobile suits are excavated and used by the protagonists while newer mobile suits use technology from Universal Century. And near the end of the series, [[spoiler:the Black History is revealed to be every single Gundam series, both before and after Turn A.]]
CrossOver/WebOriginal
* All of the shows by AIC makers of TenchiMuyo crossover some what with each other Dual! ended up with an cameo and recycling the "Light hawk wings" for its big mech. later in Tenchi Muyo! GXP and mech looking like the one from DUEL! showed up in an episode.
* The authors of ''Manga/FairyTail'' and ''Manga/FlunkPunkRumble'' did a one-shot called Fairy Megane that brought together the main characters from the two series. (The mangaka of the latter used to work as an assistant to the mangaka of the former.)
* KyoshiroToTowaNoSora is Kaishaku's go at it with his past works, most notably KannazukiNoMiko and {{UFO Princess Valkyrie}}.
* ''OnePiece'' and ''{{Toriko}}'' have crossed over three times so far, the first special (which was animated) took place pre-Timeskip in OnePiece, while the other two take place post. Both authors are real good friends so theres a chance that the crosses are canon.
** The two also crossed over with the ''Manga/DragonBallZ'' universe for the special "Dream 9: Super Collaboration Special", which involves Goku, Luffy, and Toriko fighting in a tournament so they can eat the world's rarest meat, meanwhile an energy sucking monster is stealing energy from the most powerful fighters.
[[/folder]]

[[folder:Asian Animation]]
* The 2011 spring animation festival for CCTV Dream has popular [[http://www.cctvdream.com.cn/qiao/zhuanti/2011dongmanchunwan/2011chunwan.htm characters from Chinese animation watch and interact various animated shorts from different studios]].
[[/folder]]

[[folder:Comics]]
* This was the entire premise of ''TheLeagueOfExtraordinaryGentlemen'' -- graphic novels and [[Film/TheLeagueOfExtraordinaryGentlemen movie]] both.
* ArchieComics is not afraid of this. The only real thing that defines the universes (excluding ''Sonic the Hedgehog'' and other licensed series) is different towns in America. The Archies performing alongside ''JosieAndThePussycats''? Sure!
** Sabrina however did crossover with ''Sonic the Hedgehog'', in a two part-special that expanded both series.
** ''[[http://en.wikipedia.org/wiki/Archie_Meets_the_Punisher Archie Meets The Punisher]]''. Yes, ''really''.
*** In fairness, the early 90's Frank Castle was essentially a well-equipped assassin, not an amoral wholesale slaughtering machine leaving dozens of bloody corpses everywhere. And he not only engages in less violence here than his usual missions of the time, he even lets his target live. Still, the fact that everyone involved managed to pull it off at all, much less make a pretty good story, is downright amazing.
** [[http://www.newsarama.com/comics/archie-tiny-titans-aw-yeah-10719.html Tiny Titans meets Little Archie]]. Yes, ''really''.
** There was also a crossover of Archie and the TeenageMutantNinjaTurtles. Here is a [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/21529-tmnt-meets-archie review]] of it, courtesy of [[WebVideo/AtopTheFourthWall Linkara]].
** The "Night At the Comic Book Shop" trade paperback had Archie deal with some old comic characters that Archie Comics punished.
** Archie Comics is doing a crossover bewtween [[ComicBook/MegaMan Mega Man]] and [[ComicBook/ArchieComicsSonicTheHedgehog Sonic the Hedgehog]] from April to August 2013.
* José Carioca's universe is set in his home country of Brazil, but he's shown to be friends with DonaldDuck in ''Disney/SaludosAmigos'' and ''Disney/TheThreeCaballeros'' (as well as the ride in the Mexican pavilion at Epcot). Thus, there are occasional crossovers between the Carioca universe and the [=McDuck=] Universe. Indeed, there has been a prolonged arc of stories where José visits Duckburg, and interacts with the various characters there.
* Various ImageComics titles (''ComicBook/{{Invincible}}'', ''SavageDragon'', ''Comicbook/{{Witchblade}}'', etc.) occasionally cross over, but the editorial policy is that what happens in one title doesn't have to affect events in another. Each hero lives in his or her own unique universe that may or may not contain versions of the other heroes. For instance, Invincible's universe has a Savage Dragon and a Witchblade who are more or less the same as their counterparts in their own books and have roughly the same adventures, but what happens in Invincible's book stays there.
* The very first superhero crossover was a battle between the Human Torch and the {{Sub-Mariner}} in ''Marvel Mystery Comics'' #8-9 (1940). This is the beginning of the MarvelUniverse.
** Actually, the Shield and the Wizard at MLJ met earlier. The Wizard had learned of an impending attack on Pearl Harbor and contacted the Shield. They spent the next few issues fighting the same enemies (the Soviet/Nazi proxies called Moskovians), occasionally crossing paths for a panel or three.
* Franchise/{{Superman}} and Franchise/{{Batman}} have been appearing in comics together since {{the Silver Age|OfComicBooks}}, and Franchise/WonderWoman joining in isn't uncommon, either. Generally they team up, though having them fight each other is always a good way to drawn in readers.
-->'''Superman''': "We're surrounded, you know. I can hear them all."
-->'''Batman''': "I think we can take them. Do you think we can take them?"
-->'''Superman''': "You ''always'' think we can take them."
-->'''Batman''': "Yes, I do."
-->'''Superman''': "Then, let's do it."
-->(From ''WesternAnimation/SupermanBatmanPublicEnemies'')
** If that counts, we may as well mention ''All Star Comics #3'', the comic which ''created'' TheDCU as a shared universe.
* ''ComicBook/UsagiYojimbo'' and ''Comicbook/{{Teenage Mutant Ninja Turtles|Mirage}}'' had several single-issue gag crossovers in their respective early runs, which culminated, several years later, in a volume of ''Usagi'' which centered around a village shaman summoning the Turtles to fight invading ninjas, and the Turtles' subsequent confusion at being landed in a medieval Japan inhabited by talking animals.
* Marvel's ''ComicBook/WhatIf'' series threw in a few of these over the years, notably stories in which ConanTheBarbarian fought ComicBook/CaptainAmerica (narrow win for Conan) and {{Wolverine}} (Conan wins the first round, Wolverine regenerates and pushes Conan through a portal to the future, where he destroys the universe [[RocksFallEveryoneDies by throwing a rock at Cyclops' head]]).
** Another notable Marvel crossover, this one in-continuity, featured perhaps the two greatest SwordAndSorcery heroes (using the term loosely) of all time; Conan and ''[[TheElricSaga Elric]]''. As if that wasn't epic enough, Elric's creator MichaelMoorcock helped with the plot. It also introduced evil sorcerer Kulan Gath, who at various times has put Comicbook/RedSonja, {{Spider-Man}}, the ComicBook/{{X-Men}}, Comicbook/TheAvengers, and modern day [[BigApplesauce New York City]] through pure hell.
* [[PlanetOfTheApes Ape]] [[Series/AlienNation Nation]]. ''[[http://superdickery.com/index.php?option=com_content&view=category&layout=blog&id=31&Itemid=47&limitstart=76 Ape Nation]]''.
* Marvel's ''SquadronSupreme'' limited series (already itself a psuedo-CrossOver, featuring a team of {{Captain Ersatz}}es from DCComics) also had a one-issue CrossOver with ''ComicBook/CaptainAmerica''.
* Creator/CartoonNetwork once made a comics story in which SpaceGhost's monkey sidekick, Blip, needed to save his friends from [[NinjaPirateZombieRobot Giant Cosmic Monkey Robot]] and asked MagillaGorilla, [[WesternAnimation/DextersLaboratory Monkey]], and other simians from CN's shows for help. Together they saved the hero and defeated cosmic monkey with a giant banana, soooo...yeah.
** At one point, they also did a string of SliceOfLife segments between commercial breaks where ''all'' of the characters were shown coexisting in some sort of vaguely defined urban setting.
* ''Franchise/GIJoe'' and ''Franchise/{{Transformers}}''. While the TV show is limited to the "Old Snake" thing and the hologram of Marissa's dad (see Western Animation below), the comics have crossed over many, many times, even to the point of very important and far-reaching events in one starting in crossovers [[spoiler: such as Cobra being the source of Megatron's tank body, and Bumblebee getting blown up real good and later repaired as his new Goldbug form - though if you're from the UK, you got a different Goldbug origin.]]
* The various Marvel-DC crossovers that have been published over the years, which imply the existence of a third timeline separate from the Marvel and DC continuities in which both exist alongside each other.
** There was also the ComicBook/AmalgamUniverse, which consists of heroes who merge traits of a hero from each universe. Examples include {{Comicbook/Iron|Man}} [[ComicBook/GreenLantern Lantern]] (take a guess) and Darkclaw, who was Franchise/{{Batman}} and {{Wolverine}} (!!!). However, the events of ''{{JLA-Avengers}}'' are taken as canon for both publishers in their mainstream universes.
* ''Comicbook/JudgeDredd'' has had crossovers with ''StrontiumDog'', ''RogueTrooper'', Batman, Film/{{Alien}}s, and Franchise/{{Predator}} among others. It even crossed over with its {{Spin Off}}s on two occasions.
* Every so often, the {{Justice League|OfAmerica}} and {{Justice Society|OfAmerica}} team up and have a crossover. In {{the Bronze Age|OfComicBooks}}, it happened every year; nowadays, it's more like every three years or so.
* In the 90's, DC and Image published a crossover between Franchise/{{Batman}} and {{Spawn}}. It's best remembered for completely rejecting the usual "[[LetsYouAndHimFight meet, fight, become friends]]" routine found in most crossover comics. The two heroes hate each other for almost the entire story. At the end, Spawn wonders aloud if they could try to be friends, and Batman responds by ''burying a batarang in his face.''
* That is the main premise of the IDW comic ''Infestation: Outbreak'', where a dimensional gate (which looks suspiciously like a Franchise/{{Stargate|Verse}}) unleashes hordes of zombies from another world. [[OurZombiesAreDifferent Unlike other zombies]] from this world, these are guided by a single will, the Undermind. They are also somehow capable of infecting technology and other undead creatures. When an elite vampire squad is sent to deal with the situation, one of them, Britt, gets bitten and becomes a vampire/zombie hybrid. Britt uses [[{{Magitek}} artillica]] to open four more dimensional portals, through which the zombies and infected machines pour, along with parts of Britt herself. While the other vampires manage to shut down the portals, the threat has already spread to other worlds. These worlds are those of ''Franchise/GIJoe'', ''Franchise/StarTrek'', ''Franchise/{{Transformers}}'', and ''Film/{{Ghostbusters}}''. All these worlds now have to fight an infestation from a virulence they have not seen, infecting both man and machine.
** Infestation 2 had the Elder Gods invade the IDW Teenage Mutant Ninja Turtles, G.I. Joe, Dungeons and Dragons, Bat Boy, 30 Days of Night, and the Transformers: Hearts of Steel universes by creating a rift through universes through H.P. Lovecraft's writings.
* A special magazine published in 2000 by Creator/CartoonNetwork featured a five-page comic story in which WesternAnimation/ScoobyDoo meets WesternAnimation/ThePowerpuffGirls. Bubbles, as expected, [[TheGlomp glomps]] Scooby ("Puppy!!").
* Some crossovers Linkara has reviewed include ''Franchise/StarTrek'' [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/19736-star-trekx-men-1 and]] ''Franchise/{{X-Men}}'', Music/{{Eminem}} [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/31498-eminem-and-the-punisher-1 and]] ThePunisher, and Franchise/{{Superman}} [[http://thatguywiththeglasses.com/videolinks/linkara/at4w/30797-superman-meets-the-quik-bunny and the Quik Bunny.]]
* Franchise/{{Spider-Man}} vs. [[WesternAnimation/TheRenAndStimpyShow Powdered Toast Man]] [[http://spiderfan.org/comics/images/ren_stimpy/006.jpg here]].
* ''[[{{Asterix}} Asterix In Belgium]]'' features a cameo appearance by [[{{Tintin}} Dupont and Dupondt]] (or Thompson and Thomson if you prefer, although they're unnamed here anyway).
* Creator/BongoComics produced a mini-series called ''WesternAnimation/TheSimpsons WesternAnimation/{{Futurama}}'' Crossover Crisis. The first half is the Planet Express crew being sent into an issue of ''ComicBook/TheSimpsons'' by the Brain Spawn. The second half is the residents of Springfield being pulled into New New York by one of Professor Farnsworth's inventions. And ''then'' it gets weird...
* In the German comic ''ComicBook/{{Werner}}'': Dex & Dogfort appear in ''Volle Latte!'', drawn by Jörg Reymann himself. In retour, Werner appears in the third Dex & Dogfort book, ''Schlachthofgiganten''.
** In the story about Creator/WilhelmBusch's 150th birthday at the end of ''Alles klar?'', Werner and Wilhelm Bush let loose his characters from ''MaxUndMoritz'' because they find the celebration boring. %% This entry was added automatically by FELH2. In case the wording doesn't make sense, rewrite it as you like, remove this comment and tell this troper.
* In ''{{WildCATs}} / Franchise/{{Alien}}s'', the xenomorphs end up destroying {{Stormwatch}}. This leads into ''TheAuthority'', making it one of the few crossovers with real effects.
*** ''World War III'', a FifthWeekEvent that saw the {{Wildstorm}} heroes teaming up with the HeroesReborn versions of Marvel characters.
* IDW Comics has taken advantage of their licenses and has published "[[ComicBook/StarTrekTheNextGenerationDoctorWhoAssimilation2 Assimilation Squared]]", a crossover between ''Series/StarTrekTheNextGeneration'' and ''Series/DoctorWho'', with the Borg and Cybermen as the villains. They even go back in time and have a crossover between the Fourth Doctor and ''Series/StarTrekTheOriginalSeries''.
* The ''{{Tintin}}'' comic ''The Seven Crystal Balls'' featured an appearance by Joey (it's brief, but he does introduce a plot point), from Herge's other comic series ''Joey, Zette and Jocko''.
* The Ferret from ''ComicBook/TheUltraverse'' made a cameo in a fight with E. Honda in ''ComicBook/MalibuComicsStreetFighter''.
* Phil Foglio's graphic novel adaptation of Robert Asprin's '''Another Fine Myth''' features a Law Machine from his own '''Buck Godot: Zap Gun For Hire''' universe:
** Aahz: "That was our introduction to...the Law Machine. We were all dimensional travelers...I haven't seen a Law Machine before or since."
* There were a couple of stories in which ''{{Franchise/Batman}}'' teamed up with ''{{Franchise/Spiderman}}''.
* The ''ComicBook/IncredibleHulk'' has crossed paths with ''{{Franchise/Superman}}'' and ''{{Franchise/Batman}}'' in separate issues.
[[/folder]]

[[folder:Fan Works]]
* In the ''WesternAnimation/JackieChanAdventures'' and ''WesternAnimation/TeenTitans'' crossover fanfiction ''Fanfic/AShadowOfTheTitans'', Jade ends up in the Teen Titans universe.
* Crossovers are huge in all fanworks, one of the two or three biggest reasons to create them.
* FanFic/DungeonKeeperAmi is an improbable mix of DungeonKeeper and SailorMoon. And quite good.
* A favourite for many seems to be ''Series/DoctorWho'', due to the remarkable ease with which the Doctor can be inserted in any story just by having the TARDIS land there. One of the most famous, TheManWithNoName, is a ''Series/{{Firefly}}'' / ''Doctor Who'' crossover, which some say should be officially added to {{Canon}}.
** Yet it VERY strangely lists one of the unofficial rules of the internet dealing with crossovers (specifically, [[VideoGame/{{Touhou}} rule ⑨]]
** There's also ''Fanfic/AHero'', a crossover with ''Anime/PuellaMagiMadokaMagica'' which subverts most ''Series/DoctorWho'' crossover formulas by instead inserting [[ScaryDogmaticAliens Dalek]] [[MadScientist Sec]] to fix the mess.
** Another crossover that's become increasingly popular is SuperWho, which combines ''Doctor Who'' with ''Series/{{Supernatural}}''.
*** Add one more show, ''Series/{{Sherlock}}'', to get SuperWhoLock, which has become quite popular on Tumblr.
** All it took was one scene where a pony had a David Tennant-like hairstyle and an hourglass on his quarter. The result is that under crossovers at FanFictionDotNet, ''Doctor Who'' is the most popular thing to cross into the world of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', beating out Franchise/SonicTheHedgehog.
** ''Fanfic/ChildrenOfTime'' crosses Ten's era with Literature/SherlockHolmes '''and''' ''WesternAnimation/SherlockHolmesInTheTwentySecondCentury''. Holmes and Watson take Martha Jones' place in Season 3 as Companions, with just a handful of episodes staying close to the original. The Eleventh Doctor is planned to make an appearance eventually...
* Fanfic wise, it's almost impossible to find a fandom that ''doesn't'' have a crossover with ''Literature/HarryPotter. ''
** There are crossovers of ''TheLandBeforeTime'' with ''Franchise/StarWars'', ''[[Literature/InheritanceCycle Eragon]]'', ''VideoGame/MegaMan,'' and, in one case, ''VideoGame/{{Halo}}.'' [[http://www.fanfiction.net/s/3007925/1/Star_Wars_The_Land_Before_Time_A_Jedis_Destiny Amazingly, many find that the Star Wars/Land Before time crossover in question is actually good.]]
*** [[http://www.fanfiction.net/s/4307557/1/Harry_Potter_and_the_Land_Before_Time Found the cross between Harry Potter and The Land Before Time!]]
*** "Voldemort has found a way to go back [[SomewhereAPalaeontologistIsCrying thousands of years]], to the time of the great dinosaurs"? That's not a promising opening line. There's even a [[http://www.fanfiction.net/s/5426174/1/ Land Before Time megacrossover series on FanFiction.net.]] Too bad [[SturgeonsLaw it's about the same as 90% of all fanfics.]]
** There is a really good one between ''Literature/HarryPotter'' and ''VideoGame/FinalFantasyVIII'' that starts when Harry, age 5, is magically transported to the world of [[VideoGame/FinalFantasyVIII FF8]] and once there he becomes a fine Gunblade fighter and is somehow able to use [[VideoGame/FinalFantasyVIII FF8]] magic and do everything one can in the game... without using Guardian Forces. He later has to go back to his own world, where an evil Dumbledore lays in waiting... See [[http://www.fanfiction.net/s/3471134/1/ here for the prequel+ Philosopher's Stone]] arc, [[http://www.fanfiction.net/s/3531911/1/ here for the Chamber of Secrets]] arc and [[http://www.fanfiction.net/s/3580477/1/ here for the Prisoner of Azkaban]] arc. It's a pity that the third arc is not finished...
** There's a small collection of ComicStrip/CalvinAndHobbes[=/=]Literature/HarryPotter crossovers, all involving Calvin being a wizard. Luckily this corner of fan fiction seems to be untouched by SturgeonsLaw, although that may be because they're so small in number. [[http://www.fanfiction.net/Harry_Potter_and_Calvin_Hobbes_Crossovers/224/266/ Give em a look.]] [[http://www.fanfiction.net/s/6548722/1/Calvin_and_Hobbes_in_the_Wizarding_World This one is particularly good so far.]]
** Harry Potter in ''Film/ThePrincessBride''. Hermione dreams the people she knows into the plot of the movie, with herself in the role of the Grandson being read the book by Dumbledore. [[http://www.fanfiction.net/s/135041/1/Harry_Potter_and_the_Florinese_Dream No, really!]]
** One involved the plot of Pretty Little Liars being re-imagined in the Potter universe. Unlike most other crossovers, the characters of both series don't actually meet. [[http://www.fanfiction.net/s/6701410/1/Pretty_Little_Witches Here it is]]
** Since both Harry and Edward Elric are looking for the PhilosophersStone at some point, there's a lot of crossover fanfiction with ''Manga/FullmetalAlchemist''.
* Likewise, you will be able to find crossovers between {{Twilight}} and just about anything
** Not many Crossover fics have managed to be as awesome as [[http://www.fanfiction.net/s/4821971/1/Edward_meets_Sherlock_Holmes Sherlock Holmes vs Edward Cullen.]]
* There are a few fics that cross over all the {{Nicktoons}}. One that does this along with extreme AU along with Alternate History (Vlad is now king of an FictionalCounterpart of America!) would be [[http://chesspiece.smackjeeves.com Chess Piece]] by NeoYi. It's filled with tons of continuity nods and has everything, from ''TheWildThornberrys'', ''WesternAnimation/InvaderZim'', and ''WesternAnimation/DoraTheExplorer'' to ''{{Doug}}'', ''WesternAnimation/AaahhRealMonsters'', ''CatDog'', and ''WesternAnimation/MyLifeAsATeenageRobot''. Seriously; it is also [[RuleOfCool awesome]].
* ''StarWars'' and ''Franchise/StarTrek''. The rivalry between their fanbases and The UltimateShowdownOfUltimateDestiny makes it a bygone conclusion feature some, and for those to require at least one major battle between the United Federation of Planets and the Galactic Empire, but there are certain exceptions.
** Another good one is [[http://sfdebris.com/unity.asp Unity]] by notable contributor SFDebris. What is a wormhole was connected from the Delta Quadrant circa Voyager's fifth season to the Star Wars Universe circa early Return of The Jedi, (disrupting the Rebel Alliance's attempt to attack the second Death Star.) Involved every character from TNG forward moving well into the future and exploring all the potential interactions in detail.
** To complete the trifecta of renowned Star Wars vs. Star Trek fanfics, there's [[http://bbs.stardestroyer.net/viewtopic.php?t=404&highlight= StarCrossed]].
* While not a FanFic, [[http://www.youtube.com/user/LogoAttitude this Youtube user]] makes videos which present "what if" situations dealing with [[VanityPlate television logos]], which also includes gems like [[http://www.youtube.com/watch?v=r6r3yR0PzCE "What if Steven Bochco collaborated with 4K!ds Entertainment?"]].
* ''FanFic/ShinjiAndWarhammer40K'' is sort of an odd example. It is not a story where the universes meet, being more of a ForWantOfANail story about Shinji getting a large amount of TabletopGame/{{Warhammer 40000}} pieces and rulebooks as a child. His different (happier) childhood makes for a more dynamic protagonist and leads him to influence the rest of the cast into making things that fit the TabletopGame/{{Warhammer 40000}} ethos more than the original Evangelion series did. It's not the straightest example of a universe to universe CrossOver.
** A more straightfoward example of a mostly in-universe crossover for Evangelion/Warhammer would be ''FanFic/ThousandShinji''.
* [[http://www.fanfiction.net/s/5493333/1/Brother_Bubbles Brother Bubbles]]. Space Marine Terminator finds himself in Rapture. Then meets a Little Sister.
* {{Spider-Man}} has a slew of crossovers on FanFictionDotNet. [[http://www.fanfiction.net/s/5011834/1/Web_of_Shadow_Fallout This one]] crossed with the TeenageMutantNinjaTurtles, and [[http://www.fanfiction.net/s/3914495/1/A_Hospital_In_Jersey this one]] crossed with ''Series/{{House}}'' are quite good.
* In Anime fanfiction (and sometimes in other media), a quite common way to establish a plot, especially in PeggySue fics, is to have a wish be granted by [[Manga/AhMyGoddess Belldandy or her sisters]]. Whether this crossover is minor or major varies between fics.
* Raquaza Master's [[http://s1.zetaboards.com/PokeTown_2/index/ Pokemon Squad]] fanfics are supposed to combine the characters from Franchise/{{Pokemon}}, ''WesternAnimation/KaBlam!'', ''Series/BarneyAndFriends'' (Barney is going to be one of the main antagonists), ''WesternAnimation/DannyPhantom'', ''WesternAnimation/{{Animaniacs}}'', ''Series/SesameStreet'' (Elmo's going to be an upcoming villain), many video games, and much, much more.
* The ''Manga/RanmaOneHalf'' fandom loves to create crossovers. There exists several archives devoted to them. Particularly common are crossovers with ''Manga/SailorMoon'' which has a sub genre called the FukuFic that has more fan fics written for it than most anime has fan fics total.
* Is there anyone Franchise/SonicTheHedgehog hasn't met yet? The blue hedgehog has had crossovers with [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Percy_Jackson_and_the_Olympians_Crossovers/253/2622/ Percy Jackson]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Godzilla_Crossovers/253/448/ Godzilla]], [[http://www.fanfiction.net/Transformers_Beast_Wars_and_Sonic_the_Hedgehog_Crossovers/65/253/ Transformers]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Halo_Crossovers/253/1342/ Halo]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_iCarly_Crossovers/253/2898/ iCarly]], [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Gorillaz_Crossovers/253/2340/ Gorillaz]], [[http://www.fanfiction.net/Mighty_Ducks_and_Sonic_the_Hedgehog_Crossovers/243/253/ the Mighty Ducks]] and [[FanFic/FuckTheJesusBeam Tengen Toppa Gurren Lagann]]. Are any of these even remotely connected?
** But [[http://www.fanfiction.net/Sonic_the_Hedgehog_and_Mario_Crossovers/253/347/ we all know who the big winner is...]]
** [[http://www.fanfiction.net/s/7891955/1/Sonic-Generations-Friendship-is-Timeless This]] fanfiction crosses over ''Franchise/SonicTheHedgehog'' with the cast of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', in a reimagining of the plot of SonicGenerations. It goes far beyond what the original game gives, showing the author did their research. For instance, Ponyville serves as the central [[NoPunIntended hub]], similar to the White Void in the game, the Death Egg Robot battle in the original is replaced with Nightmare Moon and in this fanfiction, Tails fights Metal Sonic instead of Sonic, possibly a reference to ''VideoGame/SonicTheHedgehog4''. The author has even adapted the updated canon of Friendship is Magic into the fanfic. However, how the author intends to implement alicorn Twilight is currently unknown.
* [[http://www.fanfiction.net/s/6095074/1/Takamachi_Nanoha_of_2814 Takamachi Nanoha of 2814]] is a ''MagicalGirlLyricalNanoha'' Crossover with ''Comicbook/GreenLantern''. Then, it started to cross over with ''everything'' by chapter 3. Written by the almost infamous Shadow Crystal Mage, so you know it's good. [[FanFic/TakamichiNanohaOf2814 Now with its own page.]]
* An author on FFnet has created this [[http://www.fanfiction.net/s/2322545/1/Halo_Republic_Commando]] a Star Wars and Halo crossover where the characters of Republic Commando (and some friends and enemies) meet Master Chief and company in the Halo universe. There is a sequel that takes place mostly in the Star Wars universe during the events of the Original Trilogy.
* FanFic/ADarkKnightOverSinCity. It's rather obvious what it is about, going by the [[ExactlyWhatItSaysOnTheTin title.]]
* FanFic/QuinnInWonderland: [[Series/{{Glee}} Quinn Fabray]] falls DownTheRabbitHole and ends up in [[Literature/AliceInWonderland Wonderland]]
* [[FanFic/BrutalSeries Brutal, Horrible, and What If]] is a series of crossovers between ''Manga/AxisPowersHetalia'' and the Hunger Games. Also AlternateUniverse.
* One author has even crossed over (at various times) Transformers with [[http://www.transformersfanfic.com/viewstory.php?sid=2439&chapter=1 Knight Rider]], The [[http://www.transformersfanfic.com/viewstory.php?sid=865&chapter=1 Real Ghostbusters]], Franchise/MastersOfTheUniverse, [[http://www.transformersfanfic.com/viewstory.php?sid=873&chapter=1 Sailor]] [[http://www.transformersfanfic.com/viewstory.php?sid=866&chapter=1 Moon]], [[http://shebakoby.deviantart.com/art/Jewel-Of-4-Sparks-32879715 Inuyasha]], and [[http://www.transformersfanfic.com/viewstory.php?sid=5021&chapter=1 Judge Judy]].
* Another author has crossed over MegasXLR with [[http://www.fanfiction.net/s/7777108/1/The_Golem_of_New_Jersey Harry Potter]], [[http://www.fanfiction.net/s/7734042/1/Megas_Five0 Lilo & Stitch]] and [[http://www.fanfiction.net/s/7929483/1/Perry_XLP Phineas & Ferb]], crossed over Phineas & Ferb with [[http://www.fanfiction.net/s/7712752/1/Seasonal_Sentai_Summerranger Super Sentai]] and [[http://www.fanfiction.net/s/7858523/1/The_Platypus_Rider Kamen Rider]], and then combined all the previous into a [[http://www.fanfiction.net/s/7998417/1/Megas_Final_Wars Mega Crossover]]
* [[http://www.fanfiction.net/u/1263379/gabriel_blessing Gabriel Blessing]] is well known for his two ''VisualNovel/FateStayNight'' crossovers:
** ''Fanfic/TheHillOfSwords'', a ''LightNovel/ZeroNoTsukaima'' crossover wherein Louise summons Shirou as her familiar. This FanFic revived the whole concept of "Let's have Louise summon a different person than Saito !"
** ''Fanfic/InFlight'', a ''Manga/{{Sekirei}}'' crossover where Shirou discovers his NotQuiteDead mother, Takami Sahashi, and replaces Minato as the Ashikabi of the North.
* [[http://www.fanfiction.net/s/5803383/1/Divine_Intervention Divine Intervention]] The [[TheBoondockSaints MacManus brothers]] meet the [[Series/{{Supernatural}} Winchester brothers.]] And it is COOL.
* One of the most prevalent type of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fan fics and fan works in general. The most regular kinds are those such as ''FanFic/BetterLivingThroughScienceAndPonies'' (''VideoGame/{{Portal}}'') and ''WebAnimation/TurnaboutStorm'' (''VisualNovel/AceAttorney''), where another series' characters are transported to Equestria, sometimes [[FisherKingdom turning into ponies in the process]], and {{Fusion Fic}}s such as ''Fanfic/FalloutEquestria'' ([[VideoGame/{{Fallout}} guess]]) and ''Fanfic/FriendsOfASolarEmpire'' (''SinsOfASolarEmpire'').
* ''Fanfic/DemonOfJustice'' is older than FanFictionDotNet and crosses Anime/MobileSuitGundamWing with [[TheWarGods Oath of Swords]], a high fantasy series.
* ''Fanfic/TheCriesOfHaruhiSuzumiya'' is a crossover between ''LightNovel/HaruhiSuzumiya'' and ''VisualNovel/HigurashiNoNakuKoroNi''.
* ''Fanfic/KyonBigDamnHero'' manages to become a crossover between LightNovel/HaruhiSuzumiya and ''TvTropes'', with ''VisualNovel/HigurashiNoNakuKoroNi'' and bits of [[spoiler:''VideoGame/{{Half-Life}}'']] added in as well.
* ''FanFic/{{Survivability}}'': The ''Manga/{{Bleach}}'' universe with an original plot, starring characters from different KPop groups (DongBangShinKi, SHINee, Big Bang, SuperJunior, B2ST, +other solo singers and actors).
* [[http://games.adultfanfiction.net/story.php?no=600086731 Bayonsiders]] has War from ''VideoGame/{{Darksiders}}'' and Bayonetta from ''VideoGame/{{Bayonetta}}'' meet up, have sex, beat up angels, beat up demons, and have sex while beating up angels and demons at the same time. All while trying to stay in continuity of both games.
* The fancomic ''Webcomic/{{Roommates}}'' by [[http://asherhyder.deviantart.com/ Ashe Rhyder]] and its spinoff ''Webcomic/GirlsNextDoor'' by [[http://pika-la-cynique.deviantart.com/ Pika la Cynique]] are this -- a crossover between ''Film/{{Labyrinth}}'', ''Theatre/ThePhantomOfTheOpera'', ''PiratesOfTheCaribbean'', ''Literature/LesMiserables'', and occasionally ''Literature/HarryPotter'' -- the many fandoms that appeared only once or twice are too numerous to count. Both by now run rather independently of each other, with a frequent ContinuityNod and ShoutOut to each other during their many, many storylines. And they are also awesome.
* Decent [[http://www.fanfiction.net/Pokemon_and_Digimon_Crossovers/80/257/ Pokemon/Digimon crossovers]] are not that common in fanfiction, but of late some interesting new submissions have popped up. SturgeonsLaw may be applicable due to grammar issues, but those with decent grammar tend to be alright.
* 4 crossovers with ''WesternAnimation/LooneyTunes'' and ''WesternAnimation/WinxClub'' have been done by [[http://www.fanfiction.net/~looneywriter]] and [[http://www.fanfiction.net/~kidswbyungsta]]. Sure enough, keeping in with the Looney Tunes style of humor, as well as adding characters from ''WesternAnimation/{{Animaniacs}}'', ''WesternAnimation/TinyToonAdventures'', and ''WesternAnimation/PinkyAndTheBrain'' may have helped them in being loved by many on [[http://www.fanfiction.net/]]
* Even though the first story of ''Fanfic/AStickySituation'' remains solidly in the ''[[Anime/DigimonTamers Digimon]]'' season three universe, the second story tosses several of the characters into ''WesternAnimation/StarWarsTheCloneWars'' due to a dimension-traveling digimon called Parallelmon (a {{Canon}} digimon, not an {{OC}} of the author). It is very well written and very entertaining.
* [[RulesOfTheInternet Rule ⑨]]: If it exists, there is a crossover with ''VideoGame/{{Touhou}}''. [[Crossovers/{{Touhou}} The series even has its own article.]]
* When ''Fanfic/WithStringsAttached'' was first conceived, it was supposed to be a [[Music/TheBeatles Beatles]]/''TabletopGame/DungeonsAndDragons'' crossover. Luckily, the author quickly matured out of that notion, and the story turned into something far more interesting and complex, though its {{RPG}} roots are quite evident still.
* There are a lot of fanarts involving [[Disney/TheJungleBook Kaa]] the Snake hypnotizing various victims. Google search "Kaa" and you'll see what the deal is.
* It's easier to count the things that Naruto hasn't had crossovers with when it's had crossovers with ''ComicStrip/TheBoondocks'', ''VideoGame/DukeNukem'', ''WesternAnimation/AquaTeenHungerForce'', ''Film/MeanGirls'', ''Godzilla'', ''Franchise/FridayThe13th'' and probably the strangest with ''MarriedWithChildren''.
* The game-idea series [[http://crossoverx.wikia.com/wiki/Crossover_X_Wiki Crossover X]] practically ''lives'' on this trope. It even uses the word "crossover" in its name.
* At least 300 crossovers of ''WesternAnimation/TotalDramaIsland'' are available on fanfiction.net
** [[http://www.fanfiction.net/~supertrip One writer]] has written the aptly named "Total Crossover" series. They are currently working on ''3'' installments at the same time. [[spoiler: The scenes with JimmyNeutron border on RevengeFic.]]
* [[http://www.fanfiction.net/s/7941617/1/To_Kill_A_Thief To Kill A Thief]]. ''KamikazeKaitouJeanne'' [[XMeetsY meets]] ''Manga/DeathNote''.
* ''Fanfic/CalvinAndHobbesTheSeries'' has a crossover ''episode'' - "Calvin's Franchise/{{Batman}} Adventure".
* [[http://www.fanfiction.net/s/7897742/1/Platinum-Angel This fic]], a crossover of ''Manga/{{Chobits}}'' with, of all things, ''Franchise/AssassinsCreed'' (trope page [[FanFic/PlatinumAngel here]]). Word from the author is that the eventual sequel will add ''Manga/MidoriNoHibi'' to the mix as well.
* The longtime crossover champion for TV shows is ''The Witness'' by Michele Martin, which managed to cross ''Series/ForeverKnight'', ''Series/{{Highlander}}'', ''Series/TheXFiles'', ''Series/QuantumLeap'', and the ''Series/{{Starman}}'' TV series. Believe it or not, the fic manages to keep all those balls in the air successfully, and even bring in cameos from a few other series, all while following a coherent plot and keeping the characters in-character!
* In''[[http://www.fanfiction.net/s/8514012/2/Keena-the-Defendants-of-Constan-Magic-Academy Keena & the Defendants of Constan Magic Academy]]'', starting in chapter 8, the group go to an AlternateUniverse that features characters from the anime film Loups=Garous.
* ''[[http://www.fanfiction.net/s/7843635/1/Portalborn Portalborn]]'' is actually inspired by the [[VideoGame/{{Portal2}} Portal 2 Mod]] for [[VideoGame/TheElderScrollsVSkyrim Skyrim.]] In starts off using the original elements of Fall of the Space Core after pitting [[{{Tsundere}} The]] [[BloodKnight Dragonborn]] with the weird and cooky [[CrazySurvivalist Doug Rattmann]]. It gets crazy, then evolves with a mysterious and adventurous plot.
* TheWTFJournal crosses over at least five fandoms.
* [[http://www.fanfiction.net/s/8985296/1/Avengers-The-Next-Generation This crossover]] between TheAvengers and PitchPerfect. It features Beca as Tony and Pepper's daughter and the rest of the cast as various superheroes.
* It's crazy just how many crossovers on FanFictionDotNet exist between ''Franchise/SonicTheHedgehog'' and ''Franchise/SuperMarioBros''. Sure, [[VideoGame/MarioAndSonicAtTheOlympicGames this may have become canon]] but authors were doing it way before then.
* Due to their popularity, it's very easy to find on deviantArt crossovers involving ''LetsPlay/TheRunawayGuys'', mostly by [=ThatOneNPC=]. The guys have crossed over with such works as ''TheWizardOfOz'', ''Literature/AliceInWonderland'', ''VideoGame/{{Portal2}}'', ''VideoGame/{{Slender}}'', ''VideoGame/ProfessorLaytonVSAceAttorney'' and ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' ([[http://fav.me/d4vqwcn no really]]), to name a few.
** Each of the guys themselves has been subject to individual crossover fanart. For instance, [[http://fav.me/d4wius7 here]] is fanart crossing over LetsPlay/{{Chuggaaconroy}} with ProfessorLayton. (Chugga liked it, by the way.)
* ''WebAnimation/ZanyToTheMax'' has an episode where the Warners (it's an ''WesternAnimation/{{Animaniacs}}'' fan series) enter the world of ''TheTimeMachine'' and try to help the Time Traveler find Weena as part of a contest. If they win, they will be able to [[ImTakingHerHomeWithMe take Weena home with them]]. [[spoiler: They don't win. WebAnimation/{{Homest|arRunner}}ripe [[AuthorAvatar Runner]] does instead.]] The episode is implied to turn into a MassiveMultiplayerCrossover by the end.
-->'''News Reporter''': We just got reports of [[WesternAnimation/ThePowerpuffGirls three super-powered sisters from the city of Townsville, Animenia]], in the Warner Bros. studio.\\
'''Yakko''': Super-powered sisters? Townsville, Animenia? [[BorrowedCatchPhrase Yes!]] Come, Warners. We must prepare for tomorrow.\\
'''Wakko''': Why, Yakko? What are we going to do tomorrow?\\
'''Yakko''': [[WesternAnimation/PinkyAndTheBrain The same thing we do every day, Wakko]]. Unfortunately, I have no idea what that is.\\
'''WesternAnimation/PinkyAndTheBrain''': They're zany, and they're the Warners, eight, eight, eight, eight, eight.
* Originally, the intent was for ''Fanfic/MyLittleUnicorn'' to be completely separate from ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' , but eventually it became a crossover, and then was fully integrated into a ''Franchise/MyLittlePony'' story.
* [[http://www.fanfiction.net/community/Seanzilla115-s-Multi-crossover-stadium/86737/3/0/1/ Seanzilla115's Multi crossover stadium]], This Fanfiction community contains some of the greatist crossover stories by the greatist authors Fanfiction.Net has to offer.
* In ''Manga/YuGiOh'' fandom there's ''Blog/AskDarkHourBakura'' which is a CharacterBlog about a crossover between the characters of Duel Monsters and the world of ''VideoGame/{{Persona 3}}''.
* In this fanfic [[http://www.fanfiction.net/s/7382184/1/Phineas-and-Ferb-Attack-from-other-Dimensions crossover]] sequel to ''Main/PhineasAndFerbTheMovieAcrossThe2ndDimension'' have the characters of Phineas and Ferb teaming up with characters from other franchises. such as ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', ''WesternAnimation/SpongeBobSquarePants'', ''VideoGames/SonicTheHedgehog'' ''TheVerse/MarvelUniverse'' and among others. for stop Dr. Heinz Doofenshmirtz, Plankton and villians from other universes from taking over the multiverse
* This [[http://www.fanfiction.net/s/7878969/1/The-Transformers-Marvel-Continuty fanfic]] is a shared universe for the Transformers and Marvel characters. as of 2013 an standalone Marvel and an official crossover story are yet to be written, but there plans to do so
* FanFic/TheInfiniteLoops structure allows for almost any crossover and, in the background, is technically a MegaCrossover.

[[/folder]]

[[folder:Films]]
* This was the entire premise of ''Film/TheLeagueOfExtraordinaryGentlemen'' -- [[TheLeagueOfExtraordinaryGentlemen graphic novels]] and movie both.
* Too many ''Franchise/{{Godzilla}}'' movie crossovers to list as many of his adversaries (including Film/KingKong and Mothra) had starred in their own films previously. He even had a smackdown with his own the American Godzilla (from [[Film/{{Godzilla 1998}} the 1998 film]]) in ''Film/GodzillaFinalWars.''
* MonsterMash films including:
** ''Film/FrankensteinMeetsTheWolfMan''
** ''Film/HouseOfFrankenstein''
** ''Film/HouseOfDracula''
** ''Film/AbbottAndCostelloMeetFrankenstein''
** ''Abbott and Costello Meet the Invisible Man''
** ''Abbott and Costello Meet Dr. Jekyll and Mr. Hyde''
** ''Abbott and Costello Meet The Mummy''
** ''Film/TheMonsterSquad''
** ''Film/FreddyVsJason''
* ''AlienVsPredator''
* The MarvelCinematicUniverse films, starting in 2008, built up a series of increasingly obvious crossovers (using the same actors in almost all cases):
** TheStinger in ''[[Film/IronMan Iron Man 2]]'' shows a S.H.I.E.L.D. agent finding Film/{{Thor}}'s hammer
** ''Film/IronMan2'' includes news footage of events from ''Film/TheIncredibleHulk''.
** Tony Stark appears in TheStinger in ''Film/TheIncredibleHulk'' (the 2008 one) to comment on those events.
** Captain America's shield appears in three separate movies:
*** In an alternate opening sequence to ''Film/TheIncredibleHulk'' (see [[http://www.firstshowing.net/2008/captain-america-officially-found-in-the-incredible-hulk/ here]]).
*** It can be seen on the table behind Tony Stark in ''Film/IronMan'' ([[http://www.firstshowing.net/2008/captain-americas-shield-found-in-iron-man/ screen cap here]]).
*** It plays a much bigger role in ''[[Film/IronMan Iron Man 2]]''.
** [[{{SHIELD}} S.H.I.E.L.D.]] director NickFury and Agent Coulson play roles in several films:
*** Agent Coulson is a minor character in ''Film/IronMan'', and Nick Fury has a cameo, where he name-drops "The Avengers Initiative", in TheStinger.
*** Both play more significant roles in ''Iron Man 2'', where Fury reveals Howard Stark's S.H.I.E.L.D. connection and Coulson gives Tony Stark Captain America's shield.
**** Black Widow also plays a key role in ''Iron Man 2.''
*** It is Coulson that finds Mjolnir at the end of ''Iron Man 2'', and contacts Fury about it.
*** Coulson plays a major role in ''Thor'', and Nick Fury has a brief cameo.
*** Nick Fury plays a minor role in ''Film/CaptainAmericaTheFirstAvenger'', where he greets a newly-awakened Steve Rogers and invites him to join the Avengers.
** By the time they got to ''Thor'' and ''Captain America'', the crossovers were pretty blatant, as the ''Avengers'' movie was starting production and public knowledge:
*** S.H.I.E.L.D. plays a major role in both films, and is shown to be obviously "collecting" superhero-related artifacts and information.
*** Tony Stark's father is a major character in ''Captain America'' and gets a name-drop in ''Thor''.
** And all of the crossovers up to that point lead to the feature-length [[Film/TheAvengers Avengers movie]] (though they presumably will not stop there)
** It has been confirmed that [[spoiler: the Collector]] from ''Film/GuardiansOfTheGalaxy'' will debut in ''[[ThorTheDarkWorld Thor: The Dark World]]''.
** Both Fury and Black Widow will appear in ''[[CaptainAmericaTheWinterSoldier Captain America: The Winter Soldier]]''.
* The 2005 animated film ''TheBatmanVsDracula''.
* The sequel to ''Film/ManOfSteel'' will revolve around the first live-action team-up between Batman and Superman. For bonus points, it's [[DuelingMovies going up against]] ''[[Film/TheAvengersAgeOfUltron Avengers: Age of Ultron]]'' at the box-office.
* Possibly the largest-scale example of this was when {{Disney}}, WarnerBros, and Turner Entertainment teamed up for the 1988 hit movie ''Film/WhoFramedRogerRabbit''.
** And now, Disney has done it again with ''Film/WreckItRalph''. Although all the characters from existing videogames usually appear for a short period of time, it still counts.
* TheViewAskewniverse movies are all connected, mostly by JayAndSilentBob appearing in every movie. Aside from that, there are numerous events, elements, and secondary characters that intertwine throughout all six films. It also helps that the movies take place in the [[NewJersey same state.]]
** Jay and Bob also pop up in ''{{Franchise/Scream}} 3''.
* There is an old film, ''Hercules, Samson and Ulysses'' which features the two strong men of the bronze age [[CoolVsAwesome coming to blows.]] It's also SoBadItsGood.
* WebVideo/TheCinemaSnob reviewed two crossover films that matched an Old West gunslinger with a classic horror character: ''Billy The Kid Vs. Dracula'' and ''Jesse James Meets Frankenstein's Daughter.''
* Creator/DannyTrejo has [[WordOfSaintPaul stated]] that the Machete Cortez in ''Film/{{Machete}}'' is what the Machete Cortez from ''SpyKids'' does when he's not taking care of the kids. As RobertRodriguez intended to make a ''Machete'' movie years before [[DevelopmentHell he was able to,]] he inserted a more family-friendly version of the same character into Spy Kids in the meantime, so this is technically canonical.
[[/folder]]

[[folder:Literature]]
* There are a large number of ''SherlockHolmes'' CrossOver pastiches, including at least three that pit the GreatDetective against {{Dracula}}.
** NeilGaiman's Hugo-winning 2003 story ''A Study in Emerald'' places SherlockHolmes in the world of Creator/HPLovecraft.
*** The Literature/DoctorWhoNewAdventures novel ''All-Consuming Fire'' did the same thing in 1994.
** ''Sherlock Holmes: The Crossover Casebook'', edited by Howard Hopkins, is an anthology consisting of such stories.
* Long before the Marvel comics put two Robert E. Howard barbarian heroes together, Howard himself did it: in the Bran Mak Morn story ''Kings of the Night'', Kull of Atlantis makes a special guest appearance. He and Bran team up against the Roman Legions invading Britain.
* The 1995 novel ''H: The Story of Heathcliff's Journey Back to Wuthering Heights'' crosses over the two Bronte sister classics ''Literature/JaneEyre'' and ''Literature/WutheringHeights''.
* Just about every Sandra Dallas book includes mentions of characters from previous books. Many times, the connections are so minuscule, it takes a discerning reader to spot them.
* Two minor Percy Jackson and the Olympian Characters, Drew and Lacy appeared in the Serpent's Shadow, after two books worth of hinting at the Greeks and Romans.
* The book ''ComicStrip/{{Garfield}}'s Christmas Tales'' contains a story in which Garfield, during a Christmas trip to the Arbuckle family farm, pays a visit to ComicStrip/USAcres (which happens to be right next door to the Arbuckle farm) and helps Orson, Wade, and Roy win a snowball fight against Orson's brothers.
* Win Scott Eckert documents a vast number of crossover stories that can all be demonstrated as fitting into the same world in the two-volume timeline ''Crossovers: A Secret Chronology of the World''.
* Ally Carter's novella "Double Cross" crosses over her ''TheGallagherGirls'' and ''HeistSociety'' series.
* ''Literature/StarTrekFederation'' {{justifie|dTrope}}s its crossover between ''Series/StarTrekTheOriginalSeries'' and ''[[Series/StarTrekTheNextGeneration The Next Generation]]'' by means of a NegativeSpaceWedgie.
[[/folder]]

[[folder:Live Action TV]]
* The "Tommy Westphall Universe" (or, alternatively, "The John Munch Principle") ties dozens of television series from the 1960's to the present through the characters of Tommy Westphall from ''Series/StElsewhere'' (who is revealed to have imagined the entire series in the final scene of the final episode) and John Munch, the Baltimore detective who has made crossover appearances in many television series (including the ''Franchise/LawAndOrder'' canon, ''Series/TheXFiles'' and ''Series/HomicideLifeOnTheStreet''). Thanks to Munch's crossovers and cameos, as well as shared elements and names that occur between different franchises and series, a theorem was developed showcasing the connections. More than ''90%'' of all television shows are connected via crossover, including the entire ''Series/AllInTheFamily'' franchise, ''Series/TheWire'', the entire ''Franchise/LawAndOrder'' franchise, every major medical drama made in the 90's and 00's, and many more. [[http://home.vicnet.net.au/~kwgow/crossovers%28full%29.jpg Here's a handy chart for those keeping track]]. And the chart isn't even the full extent of it, since the list doesn't include ANIMATED shows that have crossed over with these series (notably a brief crossover between ''The Simpsons'' and ''The X-Files'') increasing the cross overs to just about 99% of all series ever put on television.
* Apparently among Mr. Roark's ''FantasyIsland'' magical, mystical abilities is the [[http://www.youtube.com/watch?v=n_g_4C7-2Dg power to CrossOver with other AaronSpelling series]].
* ''TheNeighbors'' recently crossed over with ''[[DragonsDen Shark Tank]]'', to kick off a story arc featuring one of the Sharks investing in Debbie's quest to go to business school.
* The episodes of ''Series/LawAndOrderSpecialVictimsUnit'' and ''Series/LawAndOrderTrialByJury'' titled "Night" and "Day," respectively, were crossovers of each other on the same night. The major characters from each series appeared on both episodes, which dealt with a rapist. ''SVU'' focused on the investigation and arrest of the rapist, while ''Trial by Jury'' focused on the trial. (There was some discontinuity here. At the end of ''SVU'', the case was declared a slamdunk. At the beginning of ''TBJ'', the case became a sure loser.)
** ''[[Series/LawAndOrderSpecialVictimsUnit Law And Order: SVU]]'' did this years ago with a 2-part event, "Entitled," the second half of which took place on the original ''Series/LawAndOrder''. However, this plays havoc with syndication, because the shows are rerun on different networks in America; the ''SVU'' episode leaves the viewer hanging without the second half.
** ''Series/LawAndOrder'' also crossed over with ''[[Series/HomicideLifeOnTheStreet Homicide]]'' in what was originally a two-parter. While working together on a single case, the two squads had personality clashes, and normally-infallible characters faltered in unfamiliar settings. In a good move, when this episode is rerun TNT will show both the ''L&O'' and ''Homicide'' episodes back-to-back, even though they don't usually show ''Homicide'' at all.
*** This also happened when ChannelFive in the UK - which didn't screen ''Homicide'' - ran that particular ''L&O'' episode... unfortunately this practice is the exception rather than the rule in Britain, meaning numerous crossovers of this ilk are either left hanging (like the ''AllyMcBeal''/''ThePractice'' crossover - or, more germanely to Channel Five, the ''MartialLaw''/''WalkerTexasRanger'' one[[note]]Five screened Sammo's adventures, but not Cordell's[[/note]]) or shown waaaaaaay apart, like the ''MagnumPI''/''SimonAndSimon'' one. However, SkyOne did run the ''Series/NCISLosAngeles''/''Series/HawaiiFive0'' crossover thanks to their airing both series.
** Law and Order: SVU also had a brief crossover from the cast of Law and Order: Los Angeles.
* ''Series/ICarly'' had the crossover episodes "iParty With Series/{{Victorious}}" and "iMeet Series/{{Fred}}."
* ''Series/{{Community}}'' has a great [[Recap/CommunityS2E19CriticalFilmStudies episode]] with one, involving ''CougarTown''. Abed mentions that [[AscendedFanboy he was allowed on the set of Cougar Town as an extra,]] and [[https://www.youtube.com/watch?v=cWfJYJMrYa0 that episode actually exists!]]
* The whole point of moving ''{{Frasier}}'' to Seattle was to prevent [[ExecutiveMeddling network pressure]] for guest stars from ''{{Cheers}}.'' They couldn't hold out forever, though.
* The character of Captain Jack Harkness first appeared in ''Series/DoctorWho'' near the end of the 2005 series. At its finale, he was left behind by the Doctor, and was next seen in 2006 starring in his own spinoff, ''Series/{{Torchwood}}''. ''Torchwood'' ended its first series with Jack running away to rejoin the Doctor, which occurred near the end of ''Doctor Who's'' 2007 series in the three-part finale, after which Jack headed back to his team for ''Torchwood's'' second series.
** Jack returns for the series 4 finale, along with Ianto and Gwen. The episode crosses over even ''further'' with the return of Sarah Jane -- accompanied by her adopted son from [[Series/TheSarahJaneAdventures her own spinoff series]].
** Likewise, the Doctor has had a guest appearance in ''Series/TheSarahJaneAdventures'', as has the Brigadier (making him the first Classic Who character to appear in a Nu-Who spinoff, but not Nu-Who itself). Another SJA crossover aired, with Eleven and Jo Jones.
** ''Doctor Who'' also crossed over with ''Series/{{Eastenders}}'' in the 1993 special "[[Recap/DoctorWho30thASDimensionsInTime Dimensions in Time]]". Later developments in both shows would retcon them as having a ReciprocalFictionParadox.
* ''MartialLaw'' has the appearance of ChuckNorris' character for a couple of episodes. In fact, for that case, you have to watch the continuation of the case in ''WalkerTexasRanger'' if you want to know how it is resolved.
* ''Series/StargateSG1'' and ''Series/StargateAtlantis'' have had several instances of crossovers. Among the most notable are the characters Rodney [=McKay=] and Elizabeth Weir, who were introduced as secondary characters in ''SG-1'' and became two of the first regular characters on ''Atlantis'' (later joined by other ''SG-1'' {{transplant}}s.) Often times, things that happen in one series have an impact on the other, such as the recovery of a ZPM by SG-1 helping to defend Atlantis during its siege.
** There was a dedicated episode where SG-1 goes to Atlantis to find out the secrets of the DeusExMachina that'll save the galaxy, in the process both teams save the other one from disaster by the series' two {{Big Bad}}s. Additionally, several episodes of ''Atlantis'' have included scenes set in the SGC.
* Due to the extra time created by the 2008 [[TVStrikes Writer's Strike]], even some LateNightTalkShows got in on the action. While ''Series/TheDailyShow'' and ''Series/TheColbertReport'' often have crossovers (as Colbert's character originated on Stewart's show), what makes this special is the addition of Conan of ''Late Night with Creator/ConanOBrien.'' The three wound up having a mock feud over then-Presidential candidate Mike Huckabee, culminating in a MeleeATrois on Conan's show.
** Colbert and Jimmy Fallon each had the other crossover in the promotion of a fundraiser competition. It culminated in a performance of Rebecca Black's "Friday" that contained nearly the legal limit of awesome.
* ''{{Casualty}}'' and its spin-off ''HolbyCity'' have had four crossovers titled ''Casualty@Holby City'' (although they were given a special title, they ran as two-parters in the usual slots): two {{Christmas Episode}}s, one HalloweenEpisode, and a {{Very Special|Episode}} Organ Donation Awareness Week episode. We have yet to see ''Casualty@Holby City With Holby Blue'', but doubtless it's coming...
** And it has: although it wasn't called ''Holby Blue@Holby City'', the first episode of Season Two of ''HolbyBlue'' was a direct continuation of that week's ''HolbyCity'', both of which featured the medics and the cops.
* The various ''Franchise/StarTrek'' series saw many of these, beginning with The Next Generation, although events in one series rarely affected the others. The crossovers became more frequent in later years.
** The only storyline to play a major role in multiple ''Star Trek'' series was that involving the Maquis. The reason behind their existence (the creation of the DMZ) was established in ''StarTrekTheNextGeneration'' Season Seven but the Maquis were introduced in ''StarTrekDeepSpaceNine'' Season Two before turning up in "Preemptive Strike", the penultimate episode of ''The Next Generation'', and forming a major part of the backstory of Chakotay and B'Elanna in ''StarTrekVoyager''. The destruction of the Maquis by the Dominion in ''Deep Space Nine'' Season Five comes back to haunt Chakotay and B'Elanna in ''Voyager'' Season Four when the ship finally makes contact with the Alpha Quadrant.
** Events from one series do occasionally impact on later ones in less direct ways though. For instance, a major part of Sisko's backstory in ''Deep Space Nine'' was the death of his wife Jennifer during the Battle of Wolf 359, which occurred in TNG's "The Best of Both Worlds". The subsequent Borg attack on Section 001, which occurred in ''StarTrekFirstContact'', is mentioned occasionally in ''Deep Space Nine'' while the Dominion War from ''Deep Space Nine'' is mentioned in ''Voyager'''s "Message in a Bottle", ''StarTrekInsurrection'' and ''StarTrekNemesis''.
* ''Series/{{CSI}}'' has crossed over with both other shows within the CSI franchise, ''{{CSI NY}}'',''CSIMiami'' and also with ''Series/WithoutATrace.'' Miami, meanwhile, has crossed over twice with ''{{CSINY}}'', and New York once also did so with ''Series/ColdCase'', and the three core CSI programs have crossed over with a three-part story featuring Ray Langston. All five are produced by Jerry Bruckheimer and air on CBS, so bringing them together is less complicated than most.
* ''Series/AllMyChildren'', ''Series/OneLifeToLive'', and the defunct ''Series/{{Loving}}'' were all created by Agnes Nixon and share a universe. Numerous crossovers have occurred over the years. In 2004, AMC and OLTL launched an ambitious crossover storyline in which a baby from ''All My Children'' was kidnapped to ''One Life to Live''. The story lasted several months. Traditionally, ABC considered all of their soaps to share a universe, which allowed for the 1999 story (essentially a ratings stunt) in which Linda Dano's ''One Life to Live'' character traveled to ''All My Children'', ''Series/PortCharles'', and ''Series/GeneralHospital'' searching for her long-lost daughter, who turned out to be a fellow soap-hopping character, Skye Chandler.
** Especially between ''Port Charles'' and ''General Hospital'', which were set in the same town and hospital. Characters from one show frequently appeared on the other, and major eye-candy events like the annual Nurses Ball would start on ''Port Charles'' and finish on ''General Hospital''. Only when ''Port Charles'' took on a more supernatural tone did the crossovers stop.
* Similarly, on CBS, ''TheYoungAndTheRestless'' and ''TheBoldAndTheBeautiful'' were created by William Bell, leading to many crossovers and shared storylines. Though there are occasional glitches when actors who played one character on on show turn up as a completely different character on the other.
* ''TwoPintsOfLagerAndAPacketOfCrisps'' is crossed over with fellow BBC Three shows ''Grownups'' (which also stars Sheridan Smith, who plays Janet in ''Two Pints'') and ''ComingOfAge'' for the show's UsefulNotes/ComicRelief special.
* In a desperate attempt to prop up the ratings of its woebegone late '70s sitcom ''HelloLarry'', Creator/{{NBC}} had the cast make numerous crossover visits to the popular ''DiffrentStrokes''.
* ''Series/HappyDays'' and ''Series/LaverneAndShirley'' had characters appearing on each other's shows fairly regularly, and there was one true crossover storyline that spanned episodes of both series -- which was only reasonable, since ''Laverne And Shirley'' was a SpinOff of ''Happy Days''. And just to add a little weirdness to the mix, ''MorkAndMindy'' was ''also'' a ''HappyDays'' spinoff...
* ''Series/TheGoldenGirls'', ''Empty Nest'', and ''Nurses'' were all made by the same production company and all shared the same Miami setting, so there was predictably a fair amount of crossover among them.
* ''MagnumPI'' had crossovers with ''Series/MurderSheWrote'' and ''Series/SimonAndSimon''.
* ''Series/LasVegas'' and ''Series/CrossingJordan'' crossed over with one another on a regular basis.
* ''EverybodyLovesRaymond'', ''TheKingOfQueens'', and ''TheNanny'' also exist in the same universe and have been known to cross over.
* A rather famous "Night of Elizabeth Taylor" also tied ''Series/TheNanny'' to the other shows on the network that night, ''Can't Hurry Love,'' ''Series/MurphyBrown,'' and ''High Society.''
* Two Creator/DavidEKelley series, ''[[Series/AllyMcBeal Ally [=McBeal=]]]'' and ''ThePractice'', had a 1998 crossover storyline that encompassed episodes of both shows.
** Chi McBride's character from ''Series/BostonPublic'' also crossed over into an episode of ''Series/BostonLegal''.
** The continuity was thrown for a loop when Peter [=MacNicol=] played a one-off character on ''Series/BostonLegal'', a spin-off of ''ThePractice'', [[YouLookFamiliar after having played a lead character]] on ''Ally [=McBeal=]''.
*** And for another loop when the appearance of Bill Smitrovich as a guest star on BostonLegal, in a different role from the cranky, vindictive D.A. he played on The Practice.
*** The role was NotSoDifferent at all. The main difference was that his BostonLegal character worked in a state where Death Penalty was applicable.
*** The most baffling loop-thrower has to be John Laroquette, who had a notable guest appearance as a devious client on ThePractice before showing up as regular character Carl Sack in BostonLegal's fourth season.
* ''Series/{{Friends}}'' with ''MadAboutYou'', somewhat, as in a few eps Ursula can be found as the Buchmans' regular waitress, much to their dismay.
** There was an actual crossover when the MAY characters appeared in the coffee shop, mistook Phoebe for Ursula, and, assuming Ursula had been (rightly) fired there and hired here, tried to order coffee from her.
** There was also at least one with ''The Single Guy''.
** A more straight example would be the crossover with ''Series/CarolineInTheCity'' in the episode "The One With The Baby On The Bus". Caroline meets Chandler and Joey on the street and [[MistakenForGay mistakes them for a gay couple]]. The same night that episode aired, Chandler appeared in an episode of ''Caroline''.
** Then there was NBC's "Blackout Thursday," in which the characters on ''Mad About You'' caused a citywide blackout, followed by the characters on ''Friends'' and ''Madman of the People'' dealing with the aftermath. Notably, ''Seinfeld'' didn't join in as its script for the week had been written long before.
* Characters from ''TheLoveBoat'' guest-starred in episodes of ''Series/CharliesAngels'' and ''{{Martin}}''.
* ''Series/{{Seinfeld}}'' and ''MadAboutYou'' crossed over at least once, which generated FridgeLogic when in an episode of the former two characters were seen watching the latter.
* There hasn't been a direct crossover between ''Series/TheShield'' and ''Series/SonsOfAnarchy'', but a gang called the One-Niners, based in Los Angeles, has appeared in both shows, indicating that the shows share a continuity. Considering that one of ''SonsOfAnarchy'''s producers was a writer on ''TheShield'', it's not surprising.
* All of the series in the {{DCLAU}} tend to have numerous crossovers with eachother. In 2006, ''Series/ThatsSoRaven'', ''HannahMontana'', and ''TheSuiteLifeOfZackAndCody'' have crossed over (in a special called ''That's So Suite Life Of Hannah Montana''), and, in 2009, there was an another one with ''HannahMontana'', ''The Suite Life On Deck'', and ''WizardsOfWaverlyPlace'' (''Wizards On Deck With Hannah Montana''). Interestingly enough for shows with little enough continuity, the characters from ''The Suite Life'' and ''Hannah Montana'' recalled the previous crossover.
** Also, [[TheSuiteLifeOfZackAndCody Zack and Cody]] got to meet Iron Weasel when they snuck aboard the S.S. Tipton in an episode of ''Series/ImInTheBand''.
* Before the DCLAU, there were the TGIF full-night crossovers on ABC. For example, there was one such event in 1996 with ''Series/SabrinaTheTeenageWitch'', ''Series/BoyMeetsWorld'', ''TeenAngel'', and ''YouWish'' where the wise cracking [[BalefulPolymorph wizard turned cat]] Salem uses a [[TimeyWimeyBall temporal]] [[http://www.poobala.com/timeball.html ball]] and starts some shear fun.
* There was an [[http://www.youtube.com/watch?v=1zmDe_gTh84 episode]] of ''Series/PowerRangersInSpace'' that crossed over with ''Series/NinjaTurtlesTheNextMutation''.
** In the realm of examples that don't inflict pain in the viewing audience, from ''Lost Galaxy'' on, there's a recurring tradition of the seasonal team-up, a two-parter where the previous season's cast meets up with the current Rangers to deal with a threat that requires their combined powers.
** As of recent, the new ''Series/PowerRangersMegaforce'' will cross all previous rangers together.
** There was also a three-part episode of MMPR that featured the main character of of the ''MaskedRider'' series. Interestingly enough, 13 years later...
* ''Series/KamenRiderDecade'', itself an anniversary crossover of the previous 9 ''Franchise/KamenRider'' titles, became the first ''Kamen Rider'' series to cross over with a ''Franchise/SuperSentai'' series, with Tsukasa and Daiki appearing in two episodes of ''Series/SamuraiSentaiShinkenger'', and the Shinkenger appearing in an episode of ''Decade''. This, in turn, was followed by...
* ''Series/KaizokuSentaiGokaiger'', the 35th Anniversary ''Super Sentai'' series, features characters who can use the powers of the 34 previous teams, and at least one member of most of the previous teams have appeared on the show.
** As of January 2010, ''Series/KaizokuSentaiGokaiger'' teamed up with ''Series/SpaceSheriffGavan'' for ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie'', the first ''Franchise/SuperSentai''/''Franchise/MetalHeroes'' movie.
** Additionally, both ''Franchise/KamenRider'' and ''Franchise/SuperSentai'' have team-up or vs. movies, which cross over (usually) the current series with the previous one, but as of 2012...
* Both ''Franchise/KamenRider'' and ''Franchise/SuperSentai'' will team up once again with ''Film/KamenRiderXSuperSentaiSuperheroTaisen,'' starring ''Series/KaizokuSentaiGokaiger'' and ''Series/KamenRiderDecade,'' both of which were their respective anniversary series.
** And then a sequel staring some ''Franchise/MetalHeroes'' will be thrown in for ''Film/KamenRiderXSuperSentaiXSpaceSheriffSuperHeroTaisenZ''.
* ''Series/{{Ultraman}}'' and ''Franchise/KamenRider'' had a crossover short in the early '90s, unexpected considering each series is from a different company.
* ''Series/UltramanMebius'' has crossovers with older/the original ''Franchise/UltraSeries'' throughout its run. Be it from classic monsters to the older heroes showing up for a team up. TheMovie, ''Ultraman Mebius and the Ultra Brothers'' takes this to 11.
* Jack Webb's triumvirate of ''Series/AdamTwelve'', ''Franchise/{{Dragnet}}'', and ''Franchise/{{Emergency}}'' featured several crossovers between the three.
* The Polish CrimeAndPunishmentSeries ''W-11'' and ''Detektywi'' made at least one such crossover: an episode on ''Detektywi'' was the first part, depicting the eponymous detectives investigating a case; then, for the second part, the policemen of ''W-11'' took over.
* ''Series/{{Eureka}}'' and ''{{Warehouse 13}}'' have a pair of crossover episodes, where Fargo upgrades the Warehouse's computer system and Claudia visits Eureka. [[ButtMonkey Fargo]] even managed to {{MacGyver|ing}} a ''lightsaber'' with a laser pointer and an artifact. SyFy even used these episodes for a ''canon'' crossover ship. Claudia/Fargo. ''Series/{{Alphas}}'' was also given a crossover with ''Warehouse 13'', although no character in ''Alphas'' has yet appeared in either of the others.
* For one UsefulNotes/ComicRelief event, British {{Panel Game}}s ''HaveIGotNewsForYou'', ''NeverMindTheBuzzcocks'', and ''TheyThinkItsAllOver'' crossed over. The product was titled ''Have I Got Buzzcocks All Over''.
** An earlier UsefulNotes/ComicRelief had ''Have I Got ''Series/AQuestionOfSport'' For You''.
* In ''Series/TheManFromUNCLE'''s heyday an episode of ''Please Don't Eat The Daisies'' had the children believing their father was a spy after seeing him pass a matchbook to [[Series/TheManFromUNCLE Illya Kuryakin]] in an innocuous (or was it?) encounter. Hilarity ensues until, in the show's concluding scene, someone is brought in to convince the children that they've jumped to a foolish conclusion. It is Robert [=Vaughn=] whom the kids recognize instantly as [[Series/TheManFromUNCLE Napoleon Solo]].
** There was also an episode featuring ''Series/TheGirlFromUNCLE'', April Dancer.
* ''Series/HerculesTheLegendaryJourneys'' and ''Series/XenaWarriorPrincess''. ''Xena'' even had the BigBad [[spoiler: ''defeated in the other show'']].
* TV commercial example involving ''Series/{{Monk}}''[='=]s Adrian Monk and ''Series/TheDeadZone''[='=]s Johnny Smith. Three versions of the promos have them avoiding touching other people[=/=]things ([[http://www.youtube.com/watch?v=j-lgJCtcAIA at a detectives association meeting]]) and exhibiting their BlessedWithSuck[=/=]CursedWithAwesome (Monk's [=OCD=] demonstrated on [[http://www.youtube.com/watch?v=f50yHDekFfg corn counting]] and Smith's psychic ability with [[http://www.youtube.com/watch?v=ac5x9NSkW0Y a punch bowl]]). The USANetwork aired both of their shows at the same time.
* WordOfGod says that if ''Series/{{Psych}}'' hadn't made ''Series/{{Leverage}}'' a fictional show within ''Psych'''s universe, ''Leverage'''s Eliot would have had an uncle named Henry.
* TheWB once had a night dedicated to crossing over their shows. A character from one show would pop up in another, mostly for laughs and night contribute much to episode's plot. It was parodied in that night's episode of ''UnhappilyEverAfter'', wherein [[Series/SisterSister Jackee Harry]] and hinted that TheWayansBros were "waiting in the car".
* ''BreakoutKings'' : In the third episode of the first season, ''PrisonBreak'''s T-Bag....breaks out from a prison. An unprecedented case of a character crossing over to a show on a completely different network but not so surprising considering both show have the same producers (and an obvious common theme).
* Pat Tuesday and George Frankly from ''Series/SquareOneTV'''s Mathnet appeared in the ''Series/WhereInTheWorldIsCarmenSandiego'' episode "Minnehaha: The Filching of the Falls" to provide a clue.
* ''Series/CaptainKangaroo'' and ''{{Series/Mister Rogers|Neighborhood}}'' made appearances on each other's shows.
** Likewise, Rogers appeared on ''Series/SesameStreet'', and Big Bird appeared on Rogers' show in the Neighborhood of Make-Believe.
* While at the beach, Logan and Carlos of ''Series/BigTimeRush'' meet up with Patchy the Pirate of ''[[SpongeBob SpongeBob SquarePants]]''.
** MarvinMarvin met up with the Big Time Rush cast in "[[ExactlyWhatItSaysOnTheTin Big Time Marvin]]".
* Mikey and Paul Jr. from ''Series/AmericanChopper'' head down to Baton Rouge to hang out with the guys from ''Series/SonsOfGuns''.
* In the ninth season finale of ''TwoAndAHalfMen'' (the one after Charlie got McLeaned), among the people looking to buy Charlie's house are DharmaAndGreg.
* ''TheSixMillionDollarMan'' and ''Series/TheBionicWoman'' had regular crossovers, with two-part and three-part stories involving both shows (most notably "Kill Oscar," which had parts 1 and 3 on Jaime Sommers's show with the middle part on Steve Austin's). Curiously, although both series aired on {{ITV}} in Britain, the crossover episodes weren't treated as such: all three parts of "Kill Oscar" and both parts of "Welcome Home, Jaime" were aired as episodes of ''The Bionic Woman,'' while both parts of "The Return Of Bigfoot" were shown via ''The Six Million Dollar Man''.
* A 1968 Thanksgiving episode of ''Series/TheBeverlyHillbillies'' had that show's characters traveling to Hooterville, leading to a three-way crossover between ''The Beverly Hillbillies'', ''Series/PetticoatJunction'' and ''Series/GreenAcres''. Earlier episodes of ''Green Acres'' had shown Hootervillians ''watching the fictional Clampetts on TV'' and even producing an amateur play based on ''The Beverly Hillbillies'' TV show.
* USA Network had a set of commercials crossing over their various shows; [[Series/{{Monk}} Adrian Monk]] and [[Series/TheDeadZone Johnny Smith]] are each thankful the other doesn't want to shake hands; Johnny and [[Series/{{Psych}} Shawn Spencer]] debate who has the worse past; until they notice Monk counting his food; etc.
* Kensi from ''Series/NCISLosAngeles'' made a guest appearance on the revival of ''Series/HawaiiFive0''.
** Abby Scuito from the parent series ''Series/{{NCIS}}'' appeared in an episode of ''Series/NCISLosAngeles''.
*** And Bud Roberts from NCIS' parent series ''Series/{{JAG}}'' appeared in one episode in the first season.
** And then ''Series/NCISLosAngeles'' and ''Series/HawaiiFive0'' did a two-way crossover where Callen and Sam came to Hawaii to prevent a black-market bioweapons buy, then Danno and Chin Ho went to L.A. to stop one of the involved parties from unleashing the bioweapon in question.
* Naturally, ''Series/BuffyTheVampireSlayer'' and ''Series/{{Angel}}'' did it several times. Except during season 6/3, when Buffy's ChannelHop made it a lot harder and they were essentially banned. Then the ban was lifted, and crossovers happened again.
** One interesting example was the Buffy episode "Fool for Love", and the immediately-following Angel episode "Darla", which didn't share an A Plot, but were linked together by a series of flashbacks filling in Darla, Angel, Drusilla, and Spike's backstories (including one flashback shown first from Spike's perspective in "Fool for Love", and then OnceMoreWithClarity from Darla's perspective in "Darla").
* The Fox show ''Series/TheFinder'', besides having been given a BackDoorPilot from ''Series/{{Bones}}'', later had a crossover from the same when [[TheProfiler Sweets]] popped up to do a psychological evaluation of [[ShellshockedVeteran Walter]]. Dr. Jack Hodgins appeared in an episode of The Finder.
* ''{{Tinsel}}'' was [[{{Pun}} crossed over]] by ''Jacob's Cross'' during the brief engagement between Phillip Ade-Williams and Chi-Chi Nwachukwu-Abayomi.
* Shonda Rhimes' ''GreysAnatomy'' and ''PrivatePractice'' have crossovers seemingly every five episodes or so. Now that Rhimes has developed a new show, ''Scandal,'' one wonders just what kind of menage a trois is in store.
* UsefulNotes/ComicRelief did a crossover short between ''Series/TheVicarOfDibley'' and ''Series/{{Ballykissangel}}'' called "Ballykissdibley".
* The Australian series ''EscapeOfTheArtfulDodger'', which centered around the Artful Dodger after he's been sent to a penal colony in Australia, also featured fellow Dickens characters, [[Literature/DavidCopperfield Mr. Micawber and Uriah Heep]], in supporting roles.
* In 2010, ''CoronationStreet'' [[DuellingShows and]] ''EastEnders'' had a very well-received crossover to raise money for Children in Need.
* ''8 Out of 10 Cats'' does ''{{Countdown}}'' (twice) and ''DealOrNoDeal'' (once -- and it's the first [=DoND=] UK episode not hosted by Noel Edmonds).
* {{ER}} crossed over with ''ThirdWatch''. Unsurprising, as they were both created by John Wells and have similar subject matter. Unfortunately, it ended up negating a throwaway line in which a ThirdWatch character mentioned ''watching'' {{ER}} on television (obviously a ShoutOut, but it would mean that the two shows ''didn't'' have a SharedUniverse).
[[/folder]]

[[folder:Mythology]]
* OlderThanFeudalism: The {{Classical|Mythology}} tale of Jason and the Argonauts brought together many mythological heroes in a sort of Justice League Ancient Greece. "Hero" in ClassicalMythology was an awfully vague term (as [[CartoonHistoryOfTheUniverse Larry Gonick]] put it, heroes aren't necessarily ''heroic'', just excessive), and since the mission was to ''steal'' an item (the Golden Fleece) "Justice League" isn't a terribly good name for them....
* Maid Marian, the [[{{Arcadia}} shepherdess]], featured in many pastoral plays popular at May festivities. Then there was a fad for RobinHood plays. Then someone put the two characters together. It worked so well that Maid Marian is best known as a RobinHood character, even though her independent existence predates him.
* Morgan Le Fey originally appeared in ChivalricRomance in the Matter of France -- tales of Charlemagne -- before showing up in the Matter of Britain -- tales of KingArthur.
[[/folder]]

[[folder:Professional Wrestling]]
* Anything that can be deemed an "interpromotional match" can be considered a crossover of one talent for another promotion.
** After the Wrestling/{{WWE}} brand split, any match that had a ''[[Wrestling/{{WWERaw}} Raw]]'' talent going up against a ''[[Wrestling/WWESmackDown [=SmackDown!=]]]'' talent was considered this, and thus, you got a good bit of cross overs between the two brands. This was further jettisoned with the "Supershows", where Raw and Smack Down stars were on the same shows (to the point where from August of 2011 to the Raw 1000th episode, Raw was renamed the "Raw Supershow" with the word "supershow" being tacked on to the Raw logo in the style of the Smack Down logo
* Perhaps the most well known crossover in wrestling happened on the last episode of ''Wrestling/WCWMondayNitro'', March 26, 2001. After [[Wrestling/VinceMcMahon Vince [=McMahon=]]]'s purchase of the promotion, a simulcast was scheduled, with Vince on ''Raw'' bragging about how he bought his competition, while Nitro featured the WCW talent wrestling for perhaps their last time on television. The final minutes, however, proved to be the most memorable. On Nitro, [[Wrestling/ShaneMcMahon Shane [=McMahon=]]] made an appearance on Nitro (in Panama City, FL), while Vince was at the Raw location (in Cleveland, OH). The titantron showed Shane on Raw, while Nitro had its Nitrovision show Vince. The segment was to begin the invasion storyline (and that, in kayfabe, that Shane was the actual owner). It was memorable in that both TNT and TNN were basically broadcasting the same thing during those final ten minutes or so, but in different settings.
* During the Wrestling/{{ECW}} invasion storyline in 1997, Wrestling/JerryLawler appeared on ECW programming despite being contracted by the WWE. It was actually a work, as Vince had actually been attempting to help ECW be recognized, with Wrestling/PaulHeyman making several appearances on Raw during the angle.
* After [[http://www.wrestling-titles.com/us/ecw/ecw-h.html ECW World Heavyweight Champion]] Wrestling/MikeAwesome appeared on the [[ResetButton April 10, 2000]] ''WCW Monday Nitro'' while still holding the title, Paul Heyman filed an injunction to prevent Awesome from appearing on WCW TV. This led to the one-of-a-kind situation where Wrestling/{{Tazz}}, a WWE-contracted wrestler, defeated Awesome, a WCW-contracted wrestler, for the ECW World Heavyweight Title.[[note]]Tazz then lost the belt to ECW's Tommy Dreamer.[[/note]]
[[/folder]]


[[folder:Radio]]
* On the April 1, 2013, broadcast of "FamilyLife Today", John Fuller and Jim Daly, from "Focus on the Family", crossed over.
* An arguable one, similar to the UsefulNotes/ComicRelief PanelGame crossovers above, the New Year 2010 episode of TheBBC Radio 4 comedy panel game ''Radio/TheUnbelievableTruth'' featured StephenFry, Alan Davies, regular ''{{QI}}'' panelist Rob Brydon and ''{{QI}}'' producer John Lloyd. The format of the game was unchanged, but the "obvious answer" klaxon was added. Much to the satisfaction of the other players (and host David Mitchell), Stephen set it off twice.
* ''Radio/TheArchers'' had a crossover with Gardener's Question Time for Easter 2011, where the real-life panel, chaired by the real-life Eric Robson answered questions from the population of Ambridge.
* Two episodes of ''Radio/TheGoonShow'' featured guest appearances by Jack Train as Colonel Chinstrap from ''[=ITMA=]'', a popular comedy show from the previous decade.
* Batman and Robin made frequent appearances on ''Radio/TheAdventuresOfSuperman''.
[[/folder]]

[[folder:Tabletop Games]]
* "Reality Storm: When Worlds Collide" crossed over Hero Games' TabletopGame/{{Champions}} and Guardians Of Order's ''Silver Age Sentinels'', co-produced by both companies. The adventure itself was dual-statted, but the book also included official conversion notes between the Tri-Stat d10 system and 5th edition Hero System.
* ''TabletopGame/DungeonsAndDragons'' did this with the second edition meta-settings ''TabletopGame/{{Planescape}}'' and ''TabletopGame/{{Spelljammer}}'' connect individual settings' worlds into one {{Multiverse}}. So the characters of ''TabletopGame/ForgottenRealms'', ''TabletopGame/{{Greyhawk}}'' and ''Literature/{{Dragonlance}}'' can take a ride and visit each other. Planar travel reaches isolated places such as ''DarkSun'' and ''{{Ravenloft}}''. The latter hardly is a desirable destination, so it has The Mists that can appear in normal worlds and abduct the [=PCs=] to the Demiplane of Dread.
** The ''{{Spelljammer}}'' novels of ''The Cloakmaster Cycle'' demonstrated such a campaign, with most of the first book taking place on [[Literature/{{Dragonlance}} Krynn]], only gradually introducing the concept of spelljamming to the hero. Later he visited two of less known locations on [[TabletopGame/ForgottenRealms Toril]]. At least ''TabletopGame/ForgottenRealms'' actively supported the meeting with other worlds by [[http://www.thepiazza.org.uk/bb/viewtopic.php?f=2&t=6824 dropping mentions in its own sources]].
* West End Games' ''TabletopGame/{{Paranoia}}'' had a trilogy of crossovers under the banner "Vulture Warriors of Dimension X". The first two adventures crossed over with ''Cyberpunk 2013'' and ''TabletopGame/{{Twilight2000}}'', while the third adventure used time- and dimension-travel as a campaign hook for open-ended crossovers with other franchises.
* One of the planned alternate settings for {{Exalted}}'s third edition: {{Exalted}} vs. [[TabletopGame/OldWorldOfDarkness the World of Darkness]].
[[/folder]]

[[folder:Theatre]]
* ''Don Juan und Faust'' (1829) by Christian Dietrich Grabbe, a German dramatist. It is a crossover of the myth of {{Faust}} and of the tale of DonJuan.
* Stephen Soundheim's ''IntoTheWoods'' features Literature/{{Cinderella}}, Literature/{{Rapunzel}} and Literature/JackAndTheBeanstalk, with cameos by Literature/SleepingBeauty and Literature/SnowWhite.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/ForzaMotorsport 4'' features the Top Gear (UK) test track, and Jeremy Clarkson will provide commentary on dozens of cars in the ''Autovista'' mode. All the Reasonably Priced Cars from the UK and US Top Gear will show up as well.
** The Warthog from ''{{Halo}}'' will appear as an EasterEgg in the Autovista mode with Cortana (Jen Taylor) providing the commentary for it in the place of Clarkson. Unfortunately, it's not drivable.
* {{Konami}} has a great story with this.
** Konami's Wai Wai World series, which was the first cross-over in video game history.
** Konami's VideoGame/{{Parodius}} series.
** ''VideoGame/KonamiKrazyRacers''.
** ''VideoGame/DreamMixTVWorldFighters'', is a crossover between Konami, Hudson and Takara.
** ''VideoGame/SundayVSMagazineShuuketsuChoujouDaikessen'', is crossover between two manga mazine giants, Weekly Shonen Sunday and Weekly Shonen Magazine.
** [[{{Gradius}} The Vic Viper]] appears as a TransformingMecha in ''VideoGame/ZoneOfTheEnders 2''.
** Some characters in ''PopNMusic'' come from other {{Konami}} franchises, as a result of having songs or remixes of songs from games they appeared in being put in the game:
*** [[{{Gradius}} Vic Viper]], in his NES ''Gradius'' form ("Gradius -Full Speed-", "A Shooting Star")
*** [[VideoGame/{{Castlevania}} Simon Belmont]] ("Akumajo Dracula[[note]]the Japanese name for the ''Castlevania'' series[/note]] Medley Hybrid".)
*** [[GanbareGoemon Goemon]] ("Ganbare Goemon Medley")
*** [[VideoGame/DanceDanceRevolution Emi and Afro]], exactly as they appeared in DDR ("Flowers" and "Afronova Primeval," respectively, as well as "DDR Megamix" for Afro)
*** [[BeatmaniaIIDX Tran]] (various IIDX songs)
*** [[BeatmaniaIIDX SigSig]], exactly as she appeared in IIDX ("[=SigSig=]")
*** [[VideoGame/ZoneOfTheEnders Dingo and Ken]] ("Beyond the Bounds")
* ''VideoGame/AdventureQuestWorlds'' has a crossover event with ''Webcomic/CtrlAltDel''.
** ''[=AdventureQuest=] Worlds'' itself is one huge mix of the three main AE games, ''VideoGame/AdventureQuest'', ''VideoGame/DragonFable, and ''VideoGame/MechQuest. Heroes and villains from all three have been featured in the game, although arguably the most evil villain of all three gets killed off right in the beginning of the game.
** Before that, ''[=DragonFable=]'' and ''[=AdventureQuest=]'' had a crossover mission.
** Also, ''[=AdventureQuest=]'' and ''VideoGame/WarpForce'' are in the same period of time, but it began with a crossover from ''[=AdventureQuest=]''.
* ''VideoGame/TheKingOfFighters'' -- Featuring characters from ''VideoGame/FatalFury'', ''VideoGame/ArtOfFighting'', ''VideoGame/PsychoSoldier'', ''VideoGame/IkariWarriors'', and one or few from other SNK titles, as well as some exclusives like Kyo Kusanagi and his partners and rivals.
** One game in its 3D spinoff Maximum Impact (Mainly MI:2) had Hanzo Hattori from ''SamuraiShodown'' and Fio Germi from ''MetalSlug'' as unlockable characters.
** ''MetalSlug 6'' and ''7'' featured Ralf Jones and Clark Still (originally from ''IkariWarriors'', but using their appearances from the ''KOF'' franchise) as playable characters, with fellow Team Ikari member Leona appearing as a DLC character in ''MetalSlug XX'', a PSP re-release of ''Metal Slug 7''.
* In addition to some already present in the KOF series, ''VideoGame/NeoGeoBattleColiseum'' also added characters from other SNK titles that the KOF series didn't add, as well as some ADK titles (due to SNK Playmore's purchase of ADK after it filed for bankruptcy).
* ''KingdomHearts'' -- Where {{Disney}} and ''Franchise/FinalFantasy'' meet.
* The ''VideoGame/RivalSchools'' games have had a few crossovers with {{Capcom}}'s more popular fighting game series ''StreetFighter''; the most obvious was Sakura Kasugano, Ryu's HeroWorshipper, being a playable character in the console versions of the game. There is also a character known as Ran Hibiki, whose name is almost exactly the same as that of Dan Hibiki. Just what her relationship to him is undetermined, assuming there is a relationship at all and it is not simply an {{homage}}.
** Ran's classmate, the unnamed [[ClassRepresentative Chairperson]], also happens to study Dan's self-invented martial art, Saikyo-ryu, with [[JokeCharacter predictable results]].
** Hinata also claims to be a student of "Masters-ryu Karate" in ''Nekketsu Seishun Nikki 2'', which explains why some of her special moves have the same flame effect as Ken's Dragon Punch in ''Super Street Fighter II''.
** Also in ''StreetFighter'', Cody, Guy, Rolento, and Sodom from ''FinalFight'' appear as playable characters in the Alpha series. The crossover between the two also carried over into the cartoon, which featured a retelling of ''Final Fight's'' storyline while adding Ryu and Ken.
* ''VideoGame/SuperRobotWars.'' That is all.
** ...Until the same company also gave us VideoGame/AnotherCenturysEpisode. And said developers also made ''VideoGame/NamcoXCapcom'' and ''VideoGame/ProjectXZone''.
* The adventure game ''SherlockHolmes: Nemesis'' features Holmes matching wits with GentlemanThief Arsene Lupin.
** There are stories and videogames which also cross him over with the CthulhuMythos.
* The ''VideoGame/SegaSuperstars'' series subverts this at first, as it is essentially a collection of games based on Sega properties, but the second game, ''Superstars Tennis'' has Sega characters all play tennis together, playing the trope straight. Then there was a third racing game, which was a lot better than expected.
** Before that we had, ''VideoGame/FightersMegamix'', which included most of Sega's 3D characters in a fighting game.
* While it makes sense since they are a part of the same cosmology, most of Bioware and Obsidian's D&D-based games have subtle crossovers. Most notably, ''BaldursGate II'' features artifacts from some of the characters of ''PlanescapeTorment'', and one of said characters is also mentioned by an NPC in ''VideoGame/NeverwinterNights2''.
** Not surprising. The collusion started with ''VideoGame/NeverwinterNights'', but reached its height with ''VideoGame/KnightsOfTheOldRepublic''. The first game is "''BaldursGate'' with lightsabers." The second is "''PlanescapeTorment'' with lightsabers"
** Perhaps less crossover than {{cameo}} but the fates of the charactera from the TV show of DungeonsAndDragons is on a wall in ''Baldur's Gate II''.
* [[VideoGame/NinjaGaiden Ryu Hayabusa]] in ''VideoGame/DeadOrAlive''. Also done in reverse, with Ayane appearing as a supporting character in the new ''VideoGame/NinjaGaiden'' games.
** ''Dead or Alive 4'' has Nicole-458, a Spartan from the ''Franchise/{{Halo}}'' verse.
** ''Dead or Alive 5'' has [[GuestFighter Guest Fighters]] from VirtuaFighter appear.
* ''VideoGame/{{Battletoads}} and VideoGame/DoubleDragon: The Ultimate Team'' was one of the earliest intercompany video game crossovers, which was made possible by the fact that both series were published in America and Europe by Tradewest. The game itself is really a ''Battletoads'' game with ''Double Dragon'' characters as guest stars (some of which were misnamed).
* ''VideoGame/SuperSmashBros.''
* ''VideoGame/MarioAndSonicAtTheOlympicGames''
* [[NightsIntoDreams NiGHTS]] is featured in both of the ''VideoGame/SonicAdventure'' [[VideoGame/SonicAdventure2 games]], and while he bears no real significance to the plot, he is a part of a level in each, moreso in ''VideoGame/SonicAdventure''.
* NiGHTS and other ''VideoGame/NightsIntoDreams'' characters also make an appearance in the the Deadly Six edition of ''VideoGame/SonicLostWorld''. DLC for the game also includes a ''VideoGame/YoshisIsland'' zone and a [[Franchise/TheLegendOfZelda Zelda]] crossover was hinted in Nintendo Direct.
* ''Jewelry Master Twinkle'', an already-obscure PuzzleGame, is actually a crossover between the ''TetrisTGM''-like game ''Jewelry Master'' and the even-more-obscure mahjong game ''Taikyoku Mahjong Net-De-Ron''.
* ''VideoGame/UnrealChampionship2TheLiandriConflict'' featured Raiden from ''MortalKombat'' and Shao Kahn as an optional announcer. It helps that it was the first Unreal game being published by MidwayGames.
* ''{{Capcom}}'' has [[CapcomVsWhatever something of a history]] with these, with ''VideoGame/MarvelVsCapcom3'' being the latest installment.
* ''VideoGame/MortalKombatVsDCUniverse''
* ''AliensVsPredator''. Unlike the films, this series is actually really good. The Atari Jaguar game and the two PC games are considered classics in the [[FirstPersonShooter FPS]] genre.
* The SoulSeries is famous for this. Guest characters have included [[Franchise/TheLegendOfZelda Link]], {{Spawn}}, [[VideoGame/{{Tekken}} Heihachi]], [[VideoGame/TalesOfSymphonia Lloyd Irving]], [[VideoGame/GodOfWar Kratos]], [[StarWars Yoda and Darth Vader]], and [[VideoGame/AssassinsCreedI Ezio Auditore da Firenze]].
* ''VideoGame/CrossEdge'' is this in and out, with characters from the ''Franchise/{{Disgaea}}'', ''VideoGame/{{Darkstalkers}}'' and ''Franchise/{{Atelier}}'' franchises making playable appearances (some, like Marie from ''Atelier Marie'', being shown to international audiences for the very first time).
* ''VideoGame/AstroBoyOmegaFactor'' is a CrossOver action game of Anime/AstroBoy and other works by Osamu Tezuka.
* ''VideoGame/ProfessorLaytonVsAceAttorney'', obviously combining ''Franchise/ProfessorLayton'' and ''VisualNovel/AceAttorney''.
* A (currently) tentative title game with a three-way crossover with ''Franchise/JakAndDaxter'', ''Franchise/RatchetAndClank'', and ''Franchise/SlyCooper''. Some fans were thrilled, others... [[FandomRivalry Not so much]].
* ''VideoGame/DissidiaFinalFantasy''. It's the main heroes and villains of Final Fantasies I-XII beating the ever-loving crap out of each other!
* The retail version of the ''DoDonPachi [=DaiFukkatsu=] Black Label'' 360 port features an arrange mode that crosses ''[=DoDonPachi=]'' over with ''VideoGame/{{Ketsui}}'', with scoring elements, player ship, and TrueFinalBoss taken right out of ''Ketsui''.
* ''FamicomJump 1'' and 2.
* ''JumpSuperStars''
* ''VideoGame/PuttPutt and VideoGame/FattyBear'''s ''Activity Pack''.
* ''VideoGame/KoumajouDensetsu'', ''VideoGame/{{Touhou}}'' meets ''VideoGame/{{Castlevania}}''.
* ''VideoGame/PokemonConquest'': ''Franchise/{{Pokemon}}'' meets... ''NobunagasAmbition''.
* ''VideoGame/{{Half-Life}}'' and ''VideoGame/{{Portal}}'' were originally different universes altogether. (GLaDOS vaguely alludes to the events of Half-Life once in passing, but that was just an easter egg.) But then! In ''VideoGame/{{Portal 2}}'' you can find the drydock for a ship called the Borealis, and ''VideoGame/{{Half-Life 2}}: Episode 2'' ends with Gordon Freeman about to set off to find it.
** The shared universe is not only an allusion in the first game - in several rooms the player can find projectors with slides explaining explicitly that Black Mesa is a (hated!) competitor of Aperture Science.
* While we're at it, the first official mod for ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'', after the long-awaited HD Texture Pack... was a collaborative effort between Valve and Bethesda, showing just where that [[EnsembleDarkhorse adorable little]] [[VideoGame/{{Portal2}} Space Core]] wound up.
** And one of the fans wrote a mod that adds a crashed SSV ''Normandy'' from ''Franchise/MassEffect''.
* ''DiddyKongRacing'' for the {{Nintendo 64}} is unusual in that it crossed ''VideoGame/DonkeyKongCountry'' with two games still in development when it was released: ''{{Banjo-Kazooie}}'' and ''Conker's Twelve Tales'' (which later became ''VideoGame/ConkersBadFurDay''). Banjo and Conker were removed from the NintendoDS version, obviously due to {{Rare}} and Creator/{{Nintendo}} parting ways.
* Every Mario game that SquareEnix has worked on (''VideoGame/SuperMarioRPG'', ''FortuneStreet'', and ''Mario Hoops 3 on 3'') has included characters from their own series in some form. ''SMRPG'' features a BonusBoss utilizing the boss, victory, and Prelude themes from ''VideoGame/FinalFantasyIV'', ''Hoops'' features [[VideoGame/FinalFantasyI a Ninja, a White Mage, a Black Mage,]] a Moogle, and a Cactuar as unlockable characters, and roughly half the roster of ''FS'' is made up of ''DragonQuest'' characters (with some ''Final Fantasy'' characters appearing in [[NoExportForYou previous Japan-only installments]]).
* ''M.U.G.E.N'' is technically the ultimate crossover game, as, for example, you can fight a Touhou character with a ''VideoGame/MortalKombat'' character. That's just a basic example, as well!
* ''VideoGame/{{Mari0}}'' is a fan-made {{freeware|games}} crossover between ''VideoGame/SuperMarioBros'' and ''VideoGame/{{Portal}}''. You play as Mario... except you have a portal gun.
* Blockland has a ROBLOXian add-on that can make it be this
* ''VideoGame/PAYDAYTheHeist'', with its gameplay so inspired by ''VideoGame/Left4Dead'', went the full mile and released a heist based on Mercy Hospital from ''[=L4D=]'''s "No Mercy" campaign.
* Pop 'n Pop, an obscure puzzle game does this with both the gameplay and the characters. The gameplay is essentially [[VideoGame/BubbleBobble Puzzle Bobble]] with a few elements from {{Space Invaders}} thrown in while the roster is made up of characters from various Taito arcade games.
** Averted in North America, [[DolledUpInstallment where it was rebranded as a Yogi Bear game]].
* The [[http://www.youtube.com/watch?v=OK5-EIzDtKo recently announced]] ''VideoGame/ShinMegamiTenseiXFireEmblem'', which, as its title suggests, will feature characters from both Creator/{{Atlus}}'s flagship metaseries and Creator/{{Nintendo}}'s famed TacticalRPG franchise.
* Capcom and Valve are coming together to have a crossover of sorts in each other's games. For Valve, they are bringing Rochelle, Coach, Ellis and Nick (the survivor characters) to ''VideoGame/ResidentEvil6'' on the PC in Mercenaries mode. For Capcom, they are bringing the Lepotitsa, Napad and Ogroman as special infected counterparts to Valve's special infected for ''VideoGame/Left4Dead2''.
** Way before that, thanks to [[GameMod players modding the game]], you can have various characters from many other games be playable within Left 4 Dead and Left 4 Dead 2.
* ''VideoGame/PokerNightAtTheInventory'' has [[VideoGame/TeamFortress2 the RED Heavy]], [[WebAnimation/HomestarRunner Strong Bad]], [[Webcomic/PennyArcade Tycho]], and [[VideoGame/SamAndMaxFreelancePolice Max]] get together for a game of poker. The sequel adds [[VideoGame/SamAndMaxFreelancePolice Sam]], [[VideoGame/{{Borderlands}} Claptrap]], [[WesternAnimation/TheVentureBrothers Brock Samson]], and [[Franchise/EvilDead Ash Williams]], with [[VideoGame/{{Portal}} GLaDOS]] as the dealer.
* Even the venerable ''MarioKart'' series does this... although ''most'' of the characters are Marioverse stalwarts, Donkey Kong and Diddy Kong are their ''VideoGame/DonkeyKongCountry'' incarnations. Being co-developed by Namco, the ''Mario Kart GP'' arcade games go further than the home console versions and include characters from Pac-Man.
* A small one in the ''VideoGame/WithFriends'' line between ''Running With Friends'' and ''Matching With Friends''; you can pick up letter tiles from ''Words'' as bonuses in ''Running''. Get enough to spell out a word and you earn extra gems and XP.
* The finale of ''GhostRecon: Advanced Warfighter 2'' has the Ghosts call in an air strike, and in ''{{HAWX}}'', you get to play the mission from the jet fighters' point of view. A similar crossover occurs between ''Future Soldier'' and ''HAWX 2''.
* ''VideoGame/StarCraft'' had an unofficial crossover with ''Manga/RanmaOneHalf" in a campaign called Vision of the Future. Unfortunately, the file is currently unavailable as the site that had it expired.
* The ''VideoGame/AngryBirds'' series has a couple of these.
** The "Red's Mighty Feathers" episode in the original game is one with ''VideoGame/BadPiggies'', as Red tries to bust the pigs' various contraptions to keep them from making off with an egg.
* ''AB Rio'' is one with [[WesternAnimation/{{Rio}} the film]], as the poachers capture the birds, who escape and set out to rescue Blu and Jewel. Subsequent levels are set in the movie's Rio de Janiero and have the birds targeting the marmosets instead of the usual pigs. Blu and Jewel are also available as ammunition in some levels.
* ''[[http://www.namcohigh.com/ Namco High]]'' is a DatingSim that stars characters from ''{{Galaga}}, {{Klonoa}}, RollingThunder, {{Homestuck}}'' and more. In a high school setting...
* In ''VideoGame/PersonaQShadowOfTheLabyrinth'', the full casts of ''Persona 3'' and ''Persona 4'' end up becoming involved in the mystery of the Labyrinth.
* ''HyruleWarriors'' for the WiiU is the world of Nintendo's ''Franchise/TheLegendOfZelda'' [[XMeetsY meets]] the combat heavy gameplay of Tecmo-Koei's ''DynastyWarriors''. The game is officially labeled as a non-canon SpinOff of the Zelda franchise, meaning it doesn't conflict at all with the official Zelda timeline, so the developers are given free range on how to go about incorporating established Zelda characters, items, and enemies into this specific game's world.
[[/folder]]

[[folder:Visual Novels]]
* Despite being an internally consistent [[TheMultiverse multiverse]], the {{Nasuverse}} only has crossovers in incredibly round-about ways. Part of the problem is, well, WordOfGod stated that some of the characters simply ''cannot'' exist in the same universe for {{Canon}} reasons.
** Zelretch was seen in the Prologue to ''VisualNovel/{{Tsukihime}}'' with a young Arcueid. He also appears for one scene in the "Heaven's Feel" route to ''VisualNovel/FateStayNight'', walking in from AnotherDimension to meet Rin.
** Aoko Aozaki spends time in the beginning of ''VisualNovel/{{Tsukihime}}'' with a young Shiki Tohno. Her sister, Tohko Aozaki, is the OlderAndWiser of (arguably) ''Tsukihime''-prototype, ''Kara no Kyoukai''. Despite each of them knowing a different Shiki (each possessing the Mystic Eyes) [[WordOfGod it's explicitly stated]] that Tohko and Arcueid cannot exist in the same universe (and most likely, Shiki Ryougi and Shiki Tohno can't, either).
*** Shiki T.'s eyes are [[AllThereInTheManual a genetic thing from the Nanaya]]. Shiki R.'s are really Mystic Eyes. I don't know ''what's'' up with Tohko and Arcueid.
**** It's more along the lines of "Tohko's goal contradicts with the existence of True Ancestor Arcueid", though Nasu hasn't really made it clear on ''why''. And Mystic Eyes are just... eyes with special powers. Many, many characters have them, just that there can't be more than one possessor of the Eyes of Death Perception.
**** Shiki's Eyes of Death Perception is different from the genetic eyes of the Nanaya. Since both Shikis are from closely associated families of assassin though, it might be related to genetic. However Ryougi's family does not possess special eyes. The reason why only one can exist might be due to the nature of those eyes. Given that they are potentially insanely powerful and you can't just have people running around with such things, it might be a case of TheChosenOne.
**** It's just chance. The Eyes of Death Perception have a rare chance of showing up in their respective families. It's not that they can't exist in the same universe, it's that the chances are ''very, very'' low.
***** It may not have been chance any more than Ryougi's selection as a Counter-Force for Alaya; would it be just an accident that she was equipped and proficient with the ability needed in the brief moment the Beast of Alaya possessed her?
* In ''VisualNovel/MajiDeWatashiNiKoiShinasai'', members of the [[TheyAreMyNobleMasters Kuonji household]] shows up in several places, as they live in the neighbouring area. In one of the routes they even spend the night in that mansion. Naturally, one of them mentions that Yukie has a [[ActorAllusion nice voice]].
[[/folder]]

[[folder:Web Comics]]
* The main character in ''Webcomic/HereWolf'' debuted in the comic book ''{{Horndog}}'', and there are occasionally crossovers from time to time.
* ''Webcomic/IrregularWebcomic'' does this from time to time, sometimes in ways you might not imagine.
* ''Webcomic/LeastICouldDo'' recently had a huge one with characters from every video game webcomic (and a few others), all fighting each other to the death. Rayne [[spoiler:died multiple times, but always came back due to them being clones.]] Combatants included ''Webcomic/DinosaurComics'', ''Webcomic/EightBitTheater'', ''Webcomic/LookingForGroup'', ''Webcomic/CtrlAltDel'', ''Webcomic/PennyArcade'', ''Webcomic/{{xkcd}}'', ''Webcomic/CyanideAndHappiness'', and many, ''many'' others. Also, John dressed as the ''Comicbook/GreenLantern'' and Rayne's car became a Franchise/{{Transformer|s}}. And he got it on with some superhero babes.
** Sadly, the long-awaited battle between [[Webcomic/EightBitTheater Black Mage]] and [[Webcomic/LookingforGroup Richard the Warlock]] never happened since they were apparently on the same side, but 's not to say it never will. You never know with Sohmer and Lar.
*** Props if you noticed [[spoiler: the background of the first ''8-Bit Theater'' in Rayne and John's apartment window on one of the pages.]]
* ''Webcomic/SomethingPositive'' (and all of Randy's other strips by proxy except for ''Super Stupor''), ''Webcomic/QueenOfWands'' (and ''PunchAnPie'' by proxy), ''PennyAndAggie'', ''Webcomic/QuestionableContent'', ''Scandal Sheet!'', and ''GirlsWithSlingshots'' are all part of the same webcomic universe. Using S* P as a node, this is the beginning of the Grand Unified Webcomic Universe.
** [[http://www.shortpacked.com/2010/comic/book-12/01-dominus-jacobus/davan/ And now]], ''Shortpacked!'' and the rest of the WalkyVerse by proxy. (Although a previous [[http://www.questionablecontent.net/view.php?comic=1550 two]]-[[http://www.shortpacked.com/2009/comic/book-10/03-the-comedy-laugh/coffeehouse/ sided]] crossover between ''Shortpacked!'' and ''Webcomic/QuestionableContent'' had already unofficially put it into the S*P Multiverse.)
* It's been established in ''TheInexplicableAdventuresOfBob'' that Molly likes to write {{crack|Fic}} crossover {{fan fic}}s, like ''Literature/TheBrothersKaramazov'' meet ''Literature/HaroldAndThePurpleCrayon'' (Harold uses his purple crayon to break Dmitri out of a Siberian prison). One of her fics got illustrated to appear on [[Webcomic/TheAdventuresOfDrMcNinja Dr. McNinja's]] website, [[http://drmcninja.com/wp-content/uploads/McNinj-2.jpg thusly.]]
** The strip itself has had brief cameos by characters from ''{{Melonpool}}, {{Zortic}},'' ''EverydayHeroes,'' and ''Zeera the Space Pirate.''
* One of the earliest webcomic crossovers was a week of strips in 1998 between ''UserFriendly'' and ''Webcomic/SluggyFreelance'' where Torg temps at the [=ISP=] while Riff ends up battling the Coffee Monster.
* ''Webcomic/EmergencyExit'' is quite famous for its ''very'' extensive crossover with ''ParallelDementia'', notably having a drastic effect on the plots of both series. It was also very, very long. ''Webcomic/EmergencyExit'' also had a crossover with BeyondReality before that (Though that crossover didn't really effect the plot at all) and later had a second crossover with ''ParallelDementia'' that consisted largely of Fall and Eddie having a conversation, with several big revelations made.
* ''Webcomic/{{Jix}}'' has at least two crossovers from the creator's other series Dragon City. Both of which involve stories told about encounters with dragons, both of which were also mentioned in Dragon City, but without the Jix characters. Both times it involved main characters.
* Also, in [[http://www.drunkduck.com/Dragon_City Dragon City]], there were four major crossovers from Jix. One was when an Ambis (the alien species from Jix) tried to take over the dragons' world, another instance when one of the villains tried to kill Erin because he thought the previous crossover was still disguised as her, one was when Jonas got kidnapped by one of Jix's minor villains, and the last was when Lauren and Jix saved Erin from her editor.
* In summer 2010, the world was introduced to an WebComic/AxeCop and [[Webcomic/TheAdventuresOfDrMcNinja Dr. McNinja]] crossover. And it was awesome.
* ''{{Fans}}'' had a crossover with ''PennyAndAggie'' recently, or at least the version of ''Penny and Aggie'' that exists in the Fans-verse. [[spoiler: Charlotte turns to dark magic during the story and after being taken into custody by Aegis, ends up reluctantly helping them in their fight against The Order.]]
* ''WebComic/NerfNow'' [[http://www.nerfnow.com/comic/603 explains the reasoning]] behind this.
* The MagickChicks[=/=]EerieCuties crossover is in full swing at the time of this writing.
* ''EvilPlanTheWebcomic'' had a brief and chilling crossover with the creator's other work [[http://sire.smackjeeves.com Sire]] as of Chapter 7.
* ''ComicStrip/WhatsNewWithPhilAndDixie'' throws in [[http://www.airshipentertainment.com/growfcomic.php?date=20090315 a few ideas]].
--> TabletopGame/{{Deadlands}} is a game combining two unconnected categories - [[TheWestern Western]] and {{Horror}}. As a result of the popularity of this refreshing juxtaposition, we can expect a slew of new games created by [[XMeetsY stitching together]] various "best selling" categories. Here's a preview...
* There's a crossover saga in ''Webcomic/SlimyThief'' where in each arc the main character, Aisha, interacts with other creator owned characters. Apparently portals are opening up in alternate dimensions and sucking characters into hers.
* A brief subtle cross over in ''Webcomic/TheWhiteboard'', a quantum coffee maker dinosaur from ''Webcomic/QuestionableContent'' pays a visit, [[http://www.the-whiteboard.com/autotwb1379.html here.]]
* ''[[Webcomic/EnsignSueMustDie Ensign Two: The Wrath of Sue]]'' takes this trope UpToEleven by having the cast traverse across most every alternate universe you can imagine. Characters and places of note are [[Series/DoctorWho the Tenth Doctor]], [[Franchise/{{Pokemon}} the Pokémon world]], [[Series/{{Sherlock}} Sherlock Holmes]], [[WesternAnimation/AvatarTheLastAirbender the world of Avatar]], and [[WesternAnimation/MyLittlePonyFriendshipIsMagic Ponyville]]. And that isn't even half of them.
[[/folder]]

[[folder:Web Original]]
* ''{{lonelygirl15}}'' crossed over with ''[=OpAphid v. Tachyon=]'' in season one and ''KateModern'' in season three.
* The feud between WebVideo/TheAngryVideoGameNerd and WebVideo/TheNostalgiaCritic.
** The Critic's [[Website/ThatGuyWithTheGlasses website]] decided to run it to the ground [[http://thatguywiththeglasses.wikia.com/wiki/Cameos quite often]], starting with the MassiveMultiplayerCrossover [[WebVideo/TGWTGYearOneBrawl brawl]] [[http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/nostalgia-critic/6719-1-year-anniversary-video celebrating TGWTG's first anniversary]]. Many of the crossover reviews are shot during production of the [[{{Kickassia}} other]] [[SuburbanKnights anniversaries]] or conventions where many are reunited (most notably MAGfest).
** Not only does [[WebVideo/TheSpoonyExperiment Doctor Insano]] end up in [[WebVideo/AtopTheFourthWall Linkara's]] videos often, he first appeared in one.
*** [[WebVideo/YugiohTheAbridgedSeries Bandit Keith]] also appears in a few of Spoony's videos, portrayed by LittleKuriboh.
** The ''WebVideo/EightiesDan'' Christmas special had a crossover with other characters on ''WebVideo/TheCinemaSnob''.
* ''WebAnimation/SuperMarioBrosZ'' crosses the universe of ''Franchise/SuperMarioBros'' with that of ''Franchise/SonicTheHedgehog''. And its one big love letter to Franchise/DragonBall.
* ''WebAnimation/HowItShouldHaveEnded'' gives their take on how the Film/{{Terminator}} series [[http://www.youtube.com/watch?v=bBBw9E2Q_aY&feature should end]]. With an [[Film/BackToTheFuture unexpected crossover]].
* LemonDemon's "UltimateShowdownOfUltimateDestiny".
* [[http://www.youtube.com/watch?v=u8g_MSPVBk0 Roosterteeth]] and [[http://www.youtube.com/watch?v=LwVIJFGzptU Mega64]] ''Finally'' teaming up this week (as of Monday, November 29th, 2010). Though they have run into each other [[http://www.youtube.com/watch?v=wCujys4QAhw before.]]
* ''WebVideo/ImAMarvelAndImADC''.
* The AntiClicheAndMarySueEliminationSociety actually uses Crossovers as a gadget. It can temporarily fuse two fandoms together, but it isn't used all that often.
* A few of the AbridgedSeries' have crossovers. Examples include Ghost Nappa appearing in a ''WebVideo/YuGiOhTheAbridgedSeries'' video, and Yami Yugi appearing at the end of the ''[[WebVideo/DragonBallAbridged Dragon Ball Kai Abridged]]'' video.
* The fifth episode of ''NonePiece'' is a crossover with ''CodeMent'' (both are made by Purpleeyeswtf and has the sub-title of "CodeMent episode 14.5").
** One episode of ''CodeMent'' said that ''HellsingAbridged''[='s=] Alucard was ''CodeMent''[='s=] Lelouch's uncle and ''WebVideo/DragonBallAbridged'''s Nappa makes a short appearance.
** ''NonePiece'' received a crossover with ''NarutoTheAbridgedComedyFandubSpoofSeriesShow'', ''CodeMent'' and ''WebVideo/YuGiOhTheAbridgedSeries'' in the "Ninjas v Pirates" video.
* ''Franchise/FinalFantasy'' + ''VideoGame/DeadOrAlive'' = ''DeadFantasy''
* ''WebVideo/EpicMealTime'' has had several, including the likes of {{deadmau5}} and WebVideo/{{SMOSH}}.
-->'''Ian''': So I heard you ordered the collabo.\\
'''Harley''': I hate these guys!\\
'''Anthony''': Yeah, we hate you, too. This is for the children. [[ThinkOfTheChildren Think about the kids]].\\
'''Ian''': Yeah. C'mon, asshole.
* The "WebVideo/SlenderManMythos" has an enormous amount of crossovers. http://imgur.com/0XSOjTg
* Some of the characters in ''WebVideo/VaguelyRecallingJoJo'' are replaced with various characters from other works because the fan is vaguely recalling the series, so he fills in the things he does not remember with the things he remembers from the other series. Sometimes, they are used in {{funny background event}}s
** Magician's Red is now a [[VideoGame/PokemonRubyAndSapphire Blaziken]] and GEB happens to be its weakness because GEB is a Water-type.
** Hermit Purple is [[VideoGame/MegaMan6 Plant Man]].
** [[VideoGame/GuiltyGear Faust]] is the doctor that treats Joseph.
** Nena is replaced with [[VideoGame/GuiltyGear Bridget]] and Empress is replaced with Roger the Teddy Bear.
** Jesus and Buddha from ''Manga/SaintYoungMen'' can be seen in the background when Jotaro is confronting Enya.
** ZZ is replaced with [[VideoGame/FZero Captain Falcon]].
** [[VideoGame/YumeNikki Madotsuki and Seccom Masada]] are background characters during the Death 13 arc.
** [[VideoGame/{{Darkstalkers}} Hsien-Ko]] is the cashier at the Egyptian McDonalds.
** Blossom of the WesternAnimation/PowerpuffGirls is High Priestess and Polnareff becomes Prof. Utonium during an ArtShift.
** Part 24 starts off with a parody of [[LiveAction/TwentyFour 24]].
** The Speedwagon Foundation workers are replaced with [[VideoGame/GuiltyGear Zato-1]] (who is Rubber Soul in disguise), Manga/BlackJack, Pinoko, Faust, [[Manga/OnePiece Dr. Kureha]] and [[Anime/DragonBallZ Broly]].
** Iggy turns the Fool into [[{{Pokemon}} Regirock]] and pummels N'Doul into the ground.
** Khnum is now Oingo's [[Series/KamenRider belt buckle]]
** Chaka is replaced with [[Manga/RurouniKenshin Makoto Shishio]] and he fights off characters from his series.
** Bast is replaced with [[VideoGame/BlazBlue Taokaka]] and the old lady is replaced with [[LightNovel/SpiceAndWolf Holo the Wise One]].
** [[VideoGame/CastlevaniaRondoOfBlood Richter Belmont]] and [[VisualNovel/{{Tsukihime}} Ciel]] provide Jonathan with some backup.
** Will A. Zeppeli punches [[Manga/SoulEater Eruka]] and [[VideoGame/TouhouProject Suwako]] out.
** VideoGame/DukeNukem's soul is in Daniel J. D'Arby's collection.
** [[VideoGame/{{Skullgirls}} Squigly]] is one of the wedding party-goers
** [[VideoGame/SkullGirls Double]], [[VideoGame/GuiltyGear Dr. Baldhead]], [[Manga/{{Yugioh}} Tom]], and [[VideoGame/TouhouProject Nazrin]] are in Telence T. D'Arby's doll collection.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/DextersLaboratory'', Justice Friends and Monkey with each other, but also one episode with DynomuttDogWonder.
* ''WesternAnimation/LiloAndStitchTheSeries'' had four episodes crossing over with another Disney series each - one for ''WesternAnimation/KimPossible'', ''WesternAnimation/{{Recess}}'', ''WesternAnimation/AmericanDragonJakeLong'', and ''WesternAnimation/TheProudFamily''.
* Creator/HannaBarbera did this a ''lot''. ''Franchise/ScoobyDoo'' was usually the host show. Other Hanna-Barbera examples are ''{{Laff-a-Lympics}}'' and ''Yogi's Gang''.
** ''WesternAnimation/TheJetsonsMeetTheFlintstones'' was one of the few movies they did of this.
** Perhaps the most notorious use of this was ''WesternAnimation/ScoobyDooInArabianNights''.
** There was a multi-episode arc of ''WesternAnimation/SpaceGhost'' where the title character went up against the Council of Doom, each of whom managed to defeat Space Ghost and banish him to some other realm/time/planet, just so the other Hanna-Barbera heroes of that setting could help save him. This allowed Space Ghost to team up with the Herculoids, Mightor, WesternAnimation/{{Shazzan}}, and Super Moby Dick.
** The 1981-82 Hanna-Barbera show ''WesternAnimation/SpaceStars'' was also built around this trope. Each hourlong episode would have a short eight- to 10-minute segment starring one of the show's hero teams: SpaceGhost, TheHerculoids, the Teen Force, and Astro from ''TheJetsons''. The last five to 10 minutes of the show would then be a "Space Stars Finale" team-up between two or more of the groups against a common foe.
** ''WesternAnimation/JohnnyBravo'', "Bravo-Dooby-Doo": Johnny hitches a ride with the cast of ''WesternAnimation/ScoobyDoo'' to his great-aunt's mansion. At the end, WesternAnimation/SpeedBuggy shows up.
*** A later episode has a past incarnation of Johnny meeting Fred Flintstone.
*** The later seasons had a lot of episodes revolving around him meeting other cartoon characters. Blue Falcon, Huckleberry Hound, Music/WeirdAlYankovic...
** WesternAnimation/YogiBear and Boo Boo once turned up in a ''[[TheFlintstones Flintstones]]'' episode. Apparently, those bears are really, really old. Or able to time-travel. Or [[BreadEggsBreadedEggs both]].
** A rare live-action to animation crossover took place on ''TheFlintstones'' when [[Series/{{Bewitched}} Samantha and Darrin moved in next door]] (both series aired on ABC, and ''Bewitched'' was made by ''The Flintstones'''s (then) distributor [[ColumbiaPictures Screen Gems]]). How old ''is'' Samantha, anyway?
** Ironically averted with several of the later Flintstone shows, such as ''FredAndBarneyMeetTheThing''. They never actually met, it was just some Flintstone shorts mixed with shorts with [[ComicBook/FantasticFour the Thing]].
* ''WesternAnimation/TheVentureBrothers'' started off as a parody of ''WesternAnimation/JonnyQuest''. Eventually, characters from ''Jonny Quest'' started showing up on the show... or at least demented versions of them.
* MattGroening's shows ''WesternAnimation/TheSimpsons'' and ''WesternAnimation/{{Futurama}}'' tend to crossover for brief instances, including in the futuristic ''Simpsons'' episode "Future Drama".
-->''[Homer and Bart accidentally pick up Bender of Futurama while driving through a portal tunnel]''
-->'''Bender:''' ''Oh boy! You guys are gonna be my best friends, right?''
-->'''Homer:''' ''You wish, loser!''
-->''[Throws Bender out the car.]''
** Then there was the time ''WesternAnimation/TheSimpsons'' crossed over with ''WesternAnimation/TheCritic'', which Matt Groening was against since ''The Critic'' has a completely different style and therefore did not have Groening's involvement. Because of this, Groening's name is not shown in the credits for "A Star is Burns" (making it the only instance that this has happened). However, Jay Sherman made cameos in two other episodes that ''did'' have Groening's name in the credits.
** And one of the show's couch gags featured ''WesternAnimation/TheSimpsons'' meeting their ''TracyUllmanShow'' counterparts sitting on the sofa.
* The [[WesternAnimation/TeenageMutantNinjaTurtles1987 1987]], [[WesternAnimation/TeenageMutantNinjaTurtles2003 2003]], and [[ComicBook/TeenageMutantNinjaTurtlesMirage original comic book]] versions of the ''TeenageMutantNinjaTurtles'', in ''TurtlesForever''.
** Also, [[ComicBook/UsagiYojimbo Miyamoto Usagi]] appeared in both TMNT cartoon series.
* ''{{Spider-Man The Animated Series}}'' had a crossover with the 90's WesternAnimation/{{X-Men}} animated series. It was considered a big deal because it was a completely different animation studio involving the then current roster from X-Men in a show that was not their own. Even more impressive was the effort put in to keeping all the same cast (save for one, Gambit, presumably for contractual or scheduling reasons) for the sake of continuity. Even more fun, the crossover remains in continuity for Spider-Man, as {{Storm}} returns during the series' adaptation of the ''SecretWars'' crossover event.
** The Marvel cartoons from around this era were frequently cameo-ing in each other's series, as well (though it's hard to know if they were the same characters as the other cartoons; they all take place in ''a'' MarvelUniverse, where ''a'' Spider-Man, Human Torch, etc. would likely exist somewhere.) You never know who'll be briefly shown watching from a rooftop, or looking up at the PillarOfLight in the distance when something ''really'' big goes down. Also, Comicbook/IronMan, Comicbook/FantasticFour, Comicbook/IncredibleHulk, etc. guest starred in each other's shows often enough to make the 90s Marvel cartoons a [[{{DCAU}} Diniverse]] of sorts - you can connect the dots through all of them.
* It was a bit more subtle than most of these examples, but ''Franchise/GIJoe'' crossed over with ''WesternAnimation/TheTransformers'' in the episode "Only Human". A masked character named "Old Snake" (voiced by Chris Latta) helps the BigBad of the week with a machine to put Transformers' minds into synthetic human bodies. After the plan inevitably fails, Old Snake escapes and idly muses that "they just don't make terrorists like they used to", then raises his arms and yells "COBRAAAAAA!", ending in a coughing fit.
** At the time the episode aired, it initially had a hard time fitting in with the events of ''WesternAnimation/GIJoeTheMovie'', where Cobra Commander was transformed into an humanoid yellow cobra-man and then finally doomed to a fate as an actual non-anthropomorphic cobra. However in "Only Human", Cobra Commander is obviously humanoid and visible from his torn-up gloves are hands covered in yellow scales; presumably in reference to when he was transformed into a yellow-scaled snake man in the movie. Through what was likely coincidence, this seemingly erroneous depiction of a future Cobra Commander was later made to make sense: In 1989 (three years after "Only Human" originally aired), [=DiC=] produced a continuation of the ''G.I. Joe'' animated series, beginning with the five-part mini-series "Operation: Dragonfire". In this mini-series, Cobra Commander is still just a snake, but he's eventually returned into a humanoid form (specifically the snake-man form) by the Baroness.
** And from the same season, recurring character Marissa Faireborne was obviously the daughter of Flint (Dashiell R. Faireborne) and Lady Jaye. The DVD commentary for ''WesternAnimation/TransformersTheMovie'' finally admitted this officially.
*** One "cameo" was made when a hologram version of an aged Flint was used in order to trick Marissa in one episode.
** In a more meta case, all of Marvel/Sunbow's cartoons of TheEighties (''Transformers, G.I. Joe, WesternAnimation/{{Inhumanoids}}, WesternAnimation/{{Jem}}'' etc.) were tied into each other via Hector Ramirez, an {{Expy}} of television reporter Geraldo Rivera. Hector would show up just about any time a story needed a television reporter, suggesting the shows all resided in a shared universe.
* The all-too-trippy anti-drug {{PSA}} ''CartoonAllStarsToTheRescue''?
* ''WesternAnimation/TheFairlyOddParents'' and ''WesternAnimation/TheAdventuresOfJimmyNeutron'' crossed over three times in the JimmyTimmyPowerHour Trilogy. This was an interesting exercise because one show is ThickLineAnimation while the other is computer-generated, requiring the characters to be [[MediumBlending re-animated in the appropriate style]] while in the "other" show's universe.
** Also notable for the "MagicVersusScience" theme in all three specials.
** Eventually, this led to the ''NicktoonsUnite'' video game series, which had those three specials as their basis (and made some {{continuity nod}}s towards them).
* Creator/CartoonNetwork [[http://www.youtube.com/watch?v=Lt074nJUthI has done]] [[http://www.youtube.com/watch?v=aji96i_z7xE many promo spots]] [[http://www.youtube.com/watch?v=GlbAGOIWuB8 for itself]] [[http://www.youtube.com/watch?v=Pzth7hcueTs using odd]] [[http://www.youtube.com/watch?v=H8WPmNYDtU0 and unusual crossovers]] such as Shaggy from ''WesternAnimation/ScoobyDoo'' and Droopy Dog discussing what they call ''The Pound Puppies'' in France while driving a (live-action) convertible in (live-action) L.A., à la ''Film/PulpFiction''.
** Another showed a group of sidekicks discussing their position at [[WesternAnimation/JonnyQuest Hadji's]], while [[WesternAnimation/CowAndChicken Chicken]] protested that [[InsistentTerminology he was a co-star, not a sidekick]]. "My name is in the title, for cryin' out loud!"
** There's one line of promos they did called "Perfect as It Is", which show that certain cartoon character cross pairings just don't work out right. Take a look at "[[http://www.youtube.com/watch?v=X23fDk_UmT4 Tom and Speedy]]" (there was also "Road Runner & Dexter" and "Batman and Inch High Private Eye".
** Creator/CartoonNetwork liked the concept of [[http://www.youtube.com/watch?v=6juEOmOaYVk having their characters]] [[http://www.youtube.com/watch?v=EkbdAKna3EU in one workplace]]. It's even shown on the [[http://www.youtube.com/watch?v=1AH6QWK6z6Q Friday Nights]] intro.
** "Tom and Speedy" could work. After all, Speedy Gonzales' nemesis is Sylvester, which is just Tom with a lispy voice.
** The WesternAnimation/{{Superfriends}} and WesternAnimation/ThePowerpuffGirls [[http://youtu.be/2-8lAEB_1NE here]].
** Yet another had Fred Flintstone, Chicken, and WesternAnimation/ThundarrTheBarbarian returning from lunch and futilely searching for a parking space. Thundarr is incensed that Papa Smurf has a reserved space:
--->'''Thundarr:''' Can no leader go untainted?!
*** You can also see them [[ContinuityNod still going to work together]] in the Friday nights intro.
* A ''WesternAnimation/{{Ben 10}}'' and ''WesternAnimation/GeneratorRex'' crossover titled ''[[WesternAnimation/Ben10GeneratorRexHeroesUnited Ben 10/Generator Rex: Heroes United]]'' aired on Creator/CartoonNetwork during Thanksgiving 2011, as a "special, extended" episode of Generator Rex. A clip was shown at Comic-Con 2011, in which Ben is seen entering Rex's world through a portal, and is at first [[LetsYouAndHimFight mistaken for an EVO]].
** The ''WesternAnimation/Ben10Omniverse'' epsidoe "T.G.I.S." sees the title characters of ''WesternAnimation/TheSecretSaturdays'' appear, teaming up with Ben and Rook. Unlike the crossover with ''Generator Rex'', the team-up is presented as (as per WordOfGod by Jay Stephens, the creator of ''TSS'') as them existing in the same universe.
* ''WesternAnimation/{{Rugrats}}'' and ''WesternAnimation/TheWildThornberrys'' had a feature-film crossover.
* ''WesternAnimation/HarveyBirdmanAttorneyAtLaw'' is nearly built around this trope, with most episodes involving Harvey's law firm taking the case of some 1960s or 1970s {{Hanna-Barbera}} cartoon character.
* ''WesternAnimation/LiloAndStitchTheSeries'' has crossed over with several other DisneyChannel original cartoons, including ''WesternAnimation/TheProudFamily'', ''WesternAnimation/KimPossible'', ''WesternAnimation/AmericanDragonJakeLong'', and ''WesternAnimation/{{Recess}}''.
* A crossover of ''WesternAnimation/DarkwingDuck'' with ''WesternAnimation/ChipNDaleRescueRangers'' was planned but was never produced beyond a few voices. A quick clip of these voices can be heard in the ''Darkwing'' episode "Twitching Channels".
** ''Darkwing Duck'' did have ''WesternAnimation/DuckTales''' Gizmoduck as a reoccurring character though.
*** And in one episode, the entire recurring villain cast from ''WesternAnimation/DuckTales'' showed up in one scene.
** Also in the same vein, ''Disney/{{Hercules}}'' crossed over with ''WesternAnimation/AladdinTheSeries''.
** ''PepperAnn'' is the only animated Disney television show to ever be covered in ''HouseOfMouse''.
* ''WesternAnimation/{{Freakazoid}}'', ''WesternAnimation/{{Animaniacs}}'', and ''WesternAnimation/PinkyAndTheBrain'' did a crossover in [[http://www.youtube.com/watch?v=2NLrjVnMO7k this]] clip.
** ''WesternAnimation/{{Animaniacs}}'' sometimes did crossovers with other cartoons on its show, including one incident where Franchise/{{Batman}} rescued them from an angry fairy (as Yakko's Shakespeare recital had foretold). Coincidentally, ''WesternAnimation/BatmanTheAnimatedSeries'' aired right afterward.
*** One ''Animaniacs'' episode featured internal crossovers, with Dot and Slappy Squirrel trading places, as well as shorts featuring Mindy and the Brain, Pinky and the Cat (Rita), and Pesto and Runt.
* ''WesternAnimation/TinyToonAdventures'' was also in this same mold (considering both shows were from the same producer, Creator/StevenSpielberg). In fact, some ''WesternAnimation/{{Animaniacs}}'' characters made quick cameos in the two prime-time ''Tiny Toons'' specials in 1994.
** In the Tiny Toons direct-to-video movie ''How I Spent My Vacation,'' Buster and Babs are saved from a fall by {{Superman}}. The Bunnies promptly told the Man of Steel to get his own video.
** The episode "Fields of Honey" featured the forgotten ''LooneyTunes'' duo [[BoskoTheTalkInkKid Bosko and Honey]].
* Additionally, the ''WesternAnimation/LooneyTunes'' characters made several guest cameos on ''WesternAnimation/{{Animaniacs}}'' and ''WesternAnimation/{{Histeria}}''.
** Buddy, the failed successor to Bosko, appeared in ''The Warners 65th Anniversary Special''.
* [[WesternAnimation/SupermanTheAnimatedSeries Superman]] and [[WesternAnimation/BatmanTheAnimatedSeries Batman]] (in their Creator/BruceTimm[=/=]Creator/PaulDini incarnations) crossed over multiple times, starting with the ''World's Finest'' three-parter. Eventually, this led to the {{DCAU}}, which had this trope as its foundation.
* ''WesternAnimation/SouthPark'' did a Cartoon Crossover where Mr. Garrison sought therapy from [[WesternAnimation/DrKatzProfessionalTherapist Dr. Katz]].
** Interestingly, ''Magazine/{{Mad}}'' did the very same crossover earlier.
** Also the "Imaginationland" trilogy could also be considered something of a massive crossover as well.
** Bart Simpson of ''WesternAnimation/TheSimpsons'' appears in the two-part "Cartoon Wars". There are even references to his series, including mentioning that he stole the head off a statue once (a reference to the episode "The Telltale Head" and him saying "Cowabunga!" (in ''WesternAnimation/TheSimpsons'' episode "Behind the Laughter", Bart, after a sketch written by Homer in which Bart has the line "Cowabunga!", remarks with irritation that he's never said "Cowabunga" in his life).
* "WesternAnimation/{{The Grim Adventures|OfBillyAndMandy}} of [[WesternAnimation/CodenameKidsNextDoor the KND]]" was really more of a ''Kids Next Door'' episode with ''Billy and Mandy'' characters, but many plot points rely on the main characters of the latter (such as the AppliedPhlebotinum). There were also many a ShoutOut to other Cartoon Network original properties, including a brief ArtShift to the world of ''WesternAnimation/EdEddNEddy''.
** Fred Flintstone made a guest appearance in an episode of ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' strangely enough, though no one ever referred to him by name.
** He was referred to as "Jake Steele!" and spoke only in "Yabba dabbas". [[spoiler:That is, until the end of the episode]].
** In the same light, WesternAnimation/YogiBear, Boo Boo, and Scooby-Doo showed up in GABM as well.
* WesternAnimation/InspectorGadget once [[http://www.youtube.com/watch?v=6pduYbyIGqM#t=1m14s paid a visit]] to the live-action half of ''The Series/SuperMarioBrosSuperShow'', played by a svelte young MauriceLaMarche.
* An arc of ''WesternAnimation/StreetSharks'' dealt with them teaming up with the ''WesternAnimation/ExtremeDinosaurs''.
* ''AceVentura'' and ''WesternAnimation/TheMask'' crossed over on two episodes: the final episode of ''The Mask'' ("The Aceman Cometh") and the last episode of ''Ace Ventura'''s second season "Have Mask, Will Travel."
* Back in 1972, ''The ABC Saturday Superstar Movie'' anthology series featured ''WesternAnimation/LooneyTunes'' characters in a {{Filmation}} production, ''DaffyDuck and PorkyPig MeetTheGroovieGoolies'' -- an atypical crossover of characters from different animation studios. (Consider that veteran WB animators, such as Ted Bonnicksen, Virgil Ross, and Norm [=McCabe=] were all working at Filmation at the time.)
** Earlier in the series, King Features had produced a film, ''WesternAnimation/TheManWhoHatedLaughter'', which featured a crossover of characters such as ComicStrip/{{Blondie}}, ComicStrip/BeetleBailey, ComicStrip/FlashGordon, ComicStrip/HiAndLois, The Katzenjammer Kids, ComicStrip/MandrakeTheMagician, ComicStrip/ThePhantom, ComicStrip/{{Popeye}}, ComicStrip/PrinceValiant, and Snuffy Smith from the syndicate's various comic strips.
** Another King Features example: The main characters of ''WesternAnimation/DefendersOfTheEarth'' (King's action/adventure heroes Flash Gordon, The Phantom and Mandrake the Magician) were all from previous series, making the entire series a Crossover.
** Parodied by ''WesternAnimation/RobotChicken'': "WesternAnimation/FlashGordon! ComicStrip/ThePhantom! ComicStrip/MandrakeTheMagician! These three heroes united by a quest for justice and the coincidence they're all owned by King Features Syndicate now defend the Earth as... the Defenders of the Earth!"
* ''WesternAnimation/AlvinAndTheChipmunks'' once had a crossover with... ''WesternAnimation/AlvinAndTheChipmunks''. Or rather, the 1980s cartoon chipmunks got to meet their 1960s counterparts in a manner involving time travel, similar to ''TurtlesForever''.
* Creator/SethMacFarlane's ''WesternAnimation/FamilyGuy'', ''WesternAnimation/AmericanDad'', and ''WesternAnimation/TheClevelandShow'' have had characters make occasional appearances, but the first true crossover among them is ''Night of the Hurricane'', in which Hurricane Flozell affects all three shows and the actual "crossing over" occurs after the hurricane when Cleveland Brown, Stan Smith and Peter Griffin get involved in a stand-off.
* The ''WesternAnimation/BatmanTheAnimatedSeries'' vs ''Anime/{{Pokemon}}'' promos on KidsWB. [[http://www.youtube.com/watch?v=O4e3CDc1r5k Part One]] [[http://www.youtube.com/watch?v=uqH5WZhaKEw and two.]]
** Several other promos running on KidsWB featured similar interactive crossovers between the block's various shows.
* Building on the Scooby example above, the 14th episode of ''WesternAnimation/ScoobyDooMysteryIncorporated'' had Scooby team up with WesternAnimation/{{Captain Caveman|AndTheTeenAngels}}, WesternAnimation/{{Jabberjaw}}, WesternAnimation/TheFunkyPhantom, & WesternAnimation/SpeedBuggy in an AffectionateParody of old Hanna-Barbera cartoons.
** Blue Falcon, Dynomutt, Benton Quest, Race Bannon, and the cast of the 1967 ''Moby Dick'' cartoon also appeared.
* It seems that one of the animators that exist in ''WesternAnimation/TheClevelandShow'' created an animated version of a Na'vi from ''Film/{{Avatar}}''.
** Comic Book Guy from ''WesternAnimation/TheSimpsons'' cameo in one episode.
-->"WORST. CAMEO. EVER!"
* ''The Simpsons'' is confirmed to have crossovers with ''Family Guy'' and ''Futurama''.
* An episode of ''WesternAnimation/TheZetaProject'' crossed over with ''WesternAnimation/BatmanBeyond'', justified in this case as the former was a spinoff of the latter. (Due to Bob Kane's contractual billing being what it is, this is also the only episode where the opening titles omit the "Created by Robert Goodman" credit - the end credits specify Kane's being behind Batman, with Goodman being behind the characters for the spinoff.)
* RankinBassProductions did it with ''Rudolph and Frosty's Christmas in July'', combining Rudolph with ''WesternAnimation/FrostyTheSnowman'', ''Frosty's Winter Wonderland'', ''Rudolph's Shiny New Year'', and it appears that ''WesternAnimation/SantaClausIsCominToTown'' and ''WesternAnimation/TheYearWithoutASantaClaus'' may figure in, but mostly in dialogue references rather than character appearances. Strangely, there were never any crossovers with characters from the original ''WesternAnimation/RudolphTheRedNosedReindeer'' special -- they only appeared again in ''Rudolph and the Island of Misfit Toys''.
* [[WesternAnimation/HeManAndTheMastersOfTheUniverse1983 He-Man]] and [[WesternAnimation/SheRaPrincessOfPower She-Ra]] did this more than once, as special episodes. Made sense, since they were siblings, but every time it happened it was a big deal. The two would do their transformation sequences simultaneously, making for a doubly psych-up scene. Strangely[[note]] or not, if you're a cheap scene-recycling animation house[[/note]] though, despite being in the same place at the time, they would then each appear in front of their respective castles, which were located in different countries.
* ''EekTheCat'', it would seem, [[SharedUniverse shares a universe]] with ''Series/TheXFiles''; the episode "Eek Space 9" features cameos by Mulder and Scully (several years before ''WesternAnimation/TheSimpsons'') - an alien ship crashes into Scully's office and she screams that he was right all along [[spoiler: ([[HilariousInHindsight a not inaccurate prediction of how her character turned out on the live action show]])]]! And yes, they ''are'' voiced by Messrs. Duchovny and Anderson, which makes it even funnier.
* The [[DisneyChannel Disney Junior]] preschool shows ''WesternAnimation/SpecialAgentOso'' and ''WesternAnimation/HandyManny'' had a CrossOver called "The Manny with the Golden Bear," in which Oso called in Handy Manny when he had to help a kid who had a broken bike.
* The show HouseOfMouse was all about Disney animated characters going the house to watch various acts.
* 'Victor & Hugo - Bunglers in Crime' - Many times, either in reference or in guest stars. Count Duckula, Igor, Nanny, Hawkeye Soames and Dr. Potson (from 'Count Duckula') Danger Mouse, Colonel K, Baron Greenback, Nero and Stiletto (from Danger Mouse) and even a nod to Badger from 'Wind in the Willows. It seems fitting since 'Victor & Hugo' were a spin-off from 'Count Duckula' who in turn span off from 'Danger Mouse.'
* [[WesternAnimation/AdventureTime Finn and Jake]] appeared on an episode of {{WesternAnimation/Futurama}} [[http://www.youtube.com/watch?v=fz4tTZ4TsGA here]].
[[/folder]]
CrossOver/WesternAnimation
[[/index]]
22nd Dec '13 9:17:41 PM nombretomado
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* DannyTrejo has [[WordOfSaintPaul stated]] that the Machete Cortez in ''Film/{{Machete}}'' is what the Machete Cortez from ''SpyKids'' does when he's not taking care of the kids. As RobertRodriguez intended to make a ''Machete'' movie years before [[DevelopmentHell he was able to,]] he inserted a more family-friendly version of the same character into Spy Kids in the meantime, so this is technically canonical.

to:

* DannyTrejo Creator/DannyTrejo has [[WordOfSaintPaul stated]] that the Machete Cortez in ''Film/{{Machete}}'' is what the Machete Cortez from ''SpyKids'' does when he's not taking care of the kids. As RobertRodriguez intended to make a ''Machete'' movie years before [[DevelopmentHell he was able to,]] he inserted a more family-friendly version of the same character into Spy Kids in the meantime, so this is technically canonical.
19th Dec '13 3:47:57 PM Masterweaver
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* FanFic/TheInfinteLoops structure allows for almost any crossover and, in the background, is technically a MegaCrossover.

to:

* FanFic/TheInfinteLoops FanFic/TheInfiniteLoops structure allows for almost any crossover and, in the background, is technically a MegaCrossover.
19th Dec '13 3:46:45 PM Masterweaver
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to:

* FanFic/TheInfinteLoops structure allows for almost any crossover and, in the background, is technically a MegaCrossover.
19th Dec '13 5:46:04 AM Ninjabot
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Added DiffLines:

* NiGHTS and other ''VideoGame/NightsIntoDreams'' characters also make an appearance in the the Deadly Six edition of ''VideoGame/SonicLostWorld''. DLC for the game also includes a ''VideoGame/YoshisIsland'' zone and a [[Franchise/TheLegendOfZelda Zelda]] crossover was hinted in Nintendo Direct.
This list shows the last 10 events of 139. Show all.
http://tvtropes.org/pmwiki/article_history.php?article=Main.Crossover