A lesser version of the CrisisCrossover, but bigger than a regular {{Crossover}}, is the Bat Family Crossover, which typically occurs around a group of titles that are related by the heroes appearing in them or the location in which they take place.

It's named for its repeated use by the group of superheroes around Gotham City, since so much happens in Gotham that affects everyone in the city, but has limited, if any effect on Franchise/TheDCU, with Franchise/{{Batman}} usually [[SupermanStaysOutOfGotham ordering all of the other heroes to stay out]]. ''Maybe'' Franchise/{{Superman}} will show up for an issue or two, but only because, well, [[WolverinePublicity he's Superman]]. Sometimes there will be long-term implications that eventually filter out into the larger DCU (such as the introduction of a new hero or villain), but it won't be anything that shakes up no-Bat titles' ongoing storylines the way a CrisisCrossover would.



[[folder:Anime & Manga]]
* The ''Anime/PrettyCureAllStars'' movies. Eight have been made, with the last uniting ''thirteen seasons/eleven teams'' of magical girls for a grand total of ''43'' (plus one OriginalGeneration character).
** Thanks to the fact that the franchise kept going, All Stars eventually had to be discontinued and replaced by Dream Stars, which restricts the represented teams to the most recent 3.
* In the 1980s, Creator/StudioPierrot did a movie with the heroines of their magical girl shows teaming up.
* ''Anime/YuGiOhBondsBeyondTime'' has the main characters of the first three series team up.
* The movie "[[Anime/UFORoboGrendizer Grendizer]], [[Manga/GetterRobo Getter Robo G]], [[Anime/GreatMazinger Great Mazinger]]: Battle! Giant Sea Beast" that feature some of famous Creator/GoNagai [[HumongousMecha mecha]] shows fight the Dragosaurus, a mysterious prehistoric animal.

[[folder:Audio Plays]]
* The AudioPlay/BigFinishDoctorWho 50th anniversary MilestoneCelebration ''[[Recap/BigFinishDoctorWhoSpecialsTheLightAtTheEnd The Light at the End]]'' is essentially a Bat-Family Crossover between the Eighth Doctor Series, the Fourth Doctor Series and the Main Series (5th, 6th and 7th). (A full blown CrisisCrossover would have included Franchise/BerniceSummerfield, AudioPlay/{{Gallifrey}}, Jago & Lightfoot, and the Intrusion Countermeasures Group).

[[folder:Comic Books]]
* From the Franchise/{{Batman}} titles themselves, and the {{Trope Namer}}s, though not the {{Trope Codifier}}s:
** ''Batman: Comicbook/{{Knightfall}}''
** ''Batman: [[http://en.wikipedia.org/wiki/Batman:_Contagion Contagion]]''
** ''Batman: [[http://en.wikipedia.org/wiki/Batman:_Legacy Legacy]]''
** ''Batman: [[http://en.wikipedia.org/wiki/Batman:_Cataclysm Cataclysm]]''
** ''ComicBook/BatmanNoMansLand''. Franchise/{{Superman}} did make two appearances, but left both times after being shown that he was useless in a situation like the one Gotham was in at that point.
*** Never mind that they had just fixed Metropolis recently in his own series.
** ''Batman: [[ComicBook/BruceWayneFugitive Bruce Wayne: Murderer/Fugitive]]''. Again, Franchise/{{Superman}} made an appearance, but....
** ''Batman: War Games''
** 2011 has a rather odd example. "Judgement on Gotham" is a crossover centered on ComicBook/{{Azrael}}, a minor member of the Bat Family. While part of the story is running in Batman the two other series involved are considered somewhat peripheral series: Comicbook/RedRobin and ComicBook/GothamCitySirens.
** ''The Resurrection of Ra's Al Ghul'' and ''[[ComicBook/GrantMorrisonsBatman Batman RIP]]'' are two examples from 2008. However, ''RIP'''s true conclusion, [[spoiler:the [[FateWorseThanDeath "death"]] of Batman]], occurs in ''ComicBook/FinalCrisis''.
** Following ''RIP'' and ''Final Crisis'' in 2009 was ''Battle for the Cowl'', which encompassed three miniseries and several one-shots.
** One of the older examples was the multi-part arc that crossed over between ''Batman'' and ''Detective Comics'' in 1983 in which Killer Croc and Jason Todd were both introduced.
*** Actually, Batman and Detective were inter-connected for the last several years pre-Crisis. The Nocturna arc is probably the best example of this, as it lasted for almost a dozen issues right before COIE.
** The ''ComicBook/NightOfTheOwls'' crossover from May/June 2012. Building on the "Court of Owls" arc from Scott Snyder's Batman run, nearly every single Bat-Family book (save for Batwoman which was already in a story arc, and Batman Incorporated, which was relaunched at the end of May and continuing Morrison's long running storylines) had at least one issue dedicated to the protagonists of each book fighting Talons, the EliteMooks of the story. Even ''All-Star Western'' (set in the past with Comicbook/JonahHex), ''Comicbook/BirdsOfPrey'' (taking place in Gotham with Batgirl as an unofficial team-member but otherwise unrelated) and even a small cameo in an issue of the completely unrelated ''Comicbook/JusticeLeague'' book.
** ''ComicBook/DeathOfTheFamily'' featured [[HesBack the return of]] ComicBook/TheJoker and how his return affects Gotham.
** ''Comicbook/RobinWar'', running through ''We Are Robin'', ''Comicbook/RobinSonOfBatman'', ''Comicbook/{{Grayson}}'', and ''Detective Comics'', with tie-ins of ''Comicbook/GothamAcademy'', ''Comicbook/TeenTitans'' and ''Red Hood/Arsenal''.
** ''Comicbook/{{Gothtopia}}'', running through ''Detective'', ''Batgirl'', ''Batwing'', ''Comicbook/{{Catwoman}}'' and ''Comicbook/BirdsOfPrey''.
* ''Franchise/GreenLantern''
** ''ComicBook/TheDeathOfSuperman'' (see below) did have a minor in-universe ripple, which would be the Green Lantern crossover "Emerald Twilight," encompassing the main GL book, ''Guy Gardner: Warrior'' and ''Green Lantern Corps Quarterly''. The event ended ''Corps Quarterly'' and caused its own extremely minor ripple when Hal Jordan destroyed Guy Gardner's ring and set off his new search for powers (which crossed over with ''Green Lantern'' again and the anthology series ''Showcase'').
** ''Capital Punishment'' was a crossover between ''Green Lantern'' and ''Guy Gardner: Warrior'' where Kyle and Guy faced the Quorum, the organization that turned Guy's brother Mace into supervillain Militia and indirectly caused the death of Kyle's girlfriend Alex.
** The franchise has had recurring Lantern Family Crossovers since Creator/GeoffJohns took over the main book in the 2000s:
*** ''ComicBook/SinestroCorpsWar'' in 2007, which crossed over between ''Green Lantern'' and ''Green Lantern Corps''; the war's final battle took place on Earth, and was touched on in the otherwise unrelated title ''ComicBook/BlueBeetle''. People like Superman and the Teen Titans did figure into some tie-ins as well, but only as background or extended cameos.
*** ''ComicBook/BlackestNight'' (2009) was originally envisioned as one of these before being expanded to full-blown CrisisCrossover status. This was partially because of some sentiment that the aforementioned ''Sinestro Corps War'' had been a missed opportunity for the wider DCU. This led directly into a year-long CrossThrough, ''ComicBook/BrightestDay'', where the Lantern books (including a new one, ''Emerald Warriors'') continued to have connected storylines in that everything was being manipulated by a single villain.
*** ''War of the Green Lanterns'' ran through ''Green Lantern'', ''Green Lantern Corps'' and ''Green Lantern: Emerald Warriors'' in 2011, culminating the Lanterns' ''Brightest Day'' storylines and setting up their ComicBook/{{New 52}} status quo, including canceling ''Emerald Warriors'' and adding new ''ComicBook/RedLanterns'' and ''New Guardians'' books.
*** ''ComicBook/RiseOfTheThirdArmy'' in 2012.
*** ''ComicBook/WrathOfTheFirstLantern'' in 2013.
*** A short crossover, "ComicBook/LightsOut", happened in October 2013. It started in ''Green Lantern'', ran through ''ComicBook/GreenLanternCorps'', ''Green Lantern: New Guardians'', and ''ComicBook/RedLanterns'' before concluding in the second ''Green Lantern'' annual. It involved the Lantern corps coming together to stop an ancient being named Relic.
* Comicbook/{{Superman}}:
** ''Panic in the Sky'' in 1992. Interestingly enough, despite taking place only in the main Superman books it did involve nearly every major DC hero currently in action at the time.
** ''[[ComicBook/TheDeathOfSuperman The Death and Return of Superman]]''. Actually DID affect the rest of the Universe, most notably the destruction of Coast City. But did any of this occur outside of Superman's own books? Not really.
*** A chapter of the original ''Death'' storyline happened in Justice League, since Superman was a member at that point and it was written by Dan Jurgens, who also was more or less in charge of the Superman books at that point. And the first issue of ''Funeral'' was also in JL, which drew so much attention that rumour has it that when DC saw people's reaction to the scaled-down JL of that time, they began the first discussions that would eventually result in the new JLA. Part of the "Return" of Superman also had an issue of Franchise/GreenLantern that basically ran concurrently with the final Superman issues, showing just how displeased Hal Jordan was with the destruction of his hometown.
** ''ComicBook/TheFallOfMetropolis'': With Lex Luthor's cloned body succumbing to CloneDegeneration, he attempts to make one last stand against Cadmust for a cure, with Metropolis getting demolished in the process. While the main story occurred in Superman's four books, it had ramifications for most of the other Superman Family titles, as ComicBook/{{Superboy}}'s own title tied in with the arc due to his own failing health from the clone disease, while ComicBook/{{Supergirl}} finally broke off from Luthor after discovering he wasn't the good guy she thought he was in a tie-in mini-series building up to the whole thing. The whole arc ended up also crossing over with the above-''Worlds Collide''. Speaking of which...
** ''Worlds Collide'' from 1994 bordered between this and IntercontinuityCrossover, featuring titles from the Superman family crossing over with several titles published by Creator/MilestoneComics.
** 1998's ''Behold! The Millennium Giants!'' involved a few characters like Aquaman and the Teen Titans, but was primarily set in the Superman books involving the Superman Family taking on a trio of giant titans set to cause the end of the world. The crossover is most notable for wrapping up the infamous "Energy Superman" period and restoring the Man of Steel's original powers and costume in time for his [[MilestoneCelebration 60th Anniversary]].
** The various ''ComicBook/NewKrypton'' stories, from 2008-2010.
** 2012 gives us ''ComicBook/HelOnEarth'', which has Franchise/{{Superman}}, ComicBook/{{Superboy}} and ComicBook/{{Supergirl}} trying to stop a mysterious Kryptonian from resurrecting Krypton at the expense of Earth. The only Super-book not involved is ComicBook/ActionComics, as that takes place 5 years before events of the other three.
** 2013's ''Psi-War'' is a debatable case: it mostly ran between ''Superman'' and ''Action Comics'', but at the same time Superboy was fighting a series of psychic enemies without any real idea what was going on.
** ''Psi-War'' was immediately followed by ''Return to Krypton'', where Superman, Superboy, Supergirl and [[spoiler: H'El]] all travel back in time to before Krypton's destruction.
* ComicBook/{{Rotworld}} crosses between [[ComicBook/AnimalMan the Red]] [[ComicBook/SwampThing the Green]], and associated characters (and ''Frankenstein: Agent of S.H.A.D.E.'') in their fight against [[DarkIsEvil the Rot/the Black]].
* The vast majority of the various Comicbook/XMen crossovers are {{Bat Family Crossover}}s, as they seldom have any effect on anyone but the various groups of mutants that appear in them. (For example, the majority of the stories involving the alien Phalanx.) The "X-Overs" are actually an every-year-or-so tradition, and tend to have lasting effects (such as Apocalypse's introduction and Angel's transformation into Archangel in "Fall of the Mutants," and Generation X's creation in "Phalanx Covenant.")
** X-Men's "X-Overs" are really the {{Ur Example}}s[=/=]{{Trope Codifier}}s, with 1986's "Mutant Massacre" arc spread out in the three then-current X-Men comics at the time (''Uncanny X-Men, X-Factor,'' and ''The New Mutants'', and even branched into an issue of ''The Mighty Thor''). 1987 saw the first crossover with a full banner identifying the relevant issues, "Fall of the Mutants" (with [[RedSkiesCrossover additional series tying in with one-shots]]), and 1988 followed up with "Inferno", which was the first "true" X-crossover (in "Mutant Massacre" and "Fall of the Mutants", the X-Men and X-Factor were involved in the same conflict but never actually interacted, while "Inferno" and every crossover since has flowed directly from one team's title to the next).
** The most famous and arguably successful of these crossovers is ComicBook/AgeOfApocalypse.
** 2011 has one of these with the [[SpiritualSuccessor AoA inspired]] [[AlternateUniverse Age of X]] storyline running through ''X-Men: Legacy'' and ''ComicBook/NewMutants''.
** The mid-2000s saw ''Messiah [=CompleX=]'' which then led to ''Second Coming''. Both of which spun off the even events of the CrisisCrossover ''ComicBook/HouseOfM'', and were eventually [[BookEnds book ended]] by another one, ''[[ComicBook/AvengersVsXMen Avengers vs. X-Men]]''.
** Notable exception: ''Days of Future Present'', a 1990 annual titles crossover, in which the ComicBook/FantasticFour played a crucial part.
** 2013 saw the X-Men through "ComicBook/BattleOfTheAtom", while 2014 was the "Death of ComicBook/{{Wolverine}}".
** The X-Men have crossed over with characters of Marvel's cosmic line on a few occasions: "The Trial of Jean Grey" (with the ''ComicBook/GuardiansOfTheGalaxy'' in 2013, and once again with them (and ''ComicBook/{{Nova}}'') in 2015's "The Black Vortex."
* Any number of [[UsefulNotes/TheGoldenAgeOfComicBooks Golden Age]] Marvel Family (the ''ComicBook/{{Shazam}}!'' group) crossovers, who might be the originators of this.
* [[Franchise/MarvelUniverse Marvel's]] ''ComicBook/{{Annihilation}}'' wasn't a crossover, but a set of linked MiniSeries where a tyrant from another universe broke into ours and started conquering and destroying alien empires; this had no effect on the heroes on Earth, who were, at about the same time, going through ''ComicBook/CivilWar''.
** Lampshaded in ''Nova'' #2, where ComicBook/{{Nova}}, a native Earthling who was involved in ''Annihilation'', comes back. He and [[Comicbook/IronMan Tony Stark]] compare notes, and realize that neither knew of the earth-shattering events the other had faced. Amusingly, Nova is put rather out of sorts to learn that while the rest of the universe has been fighting a desperate attempt to stave off the complete destruction of all that lives, Earth has been busy squabbling over a piece of legislation.
** Further lampshaded in a "What If" story about the Annihilation villains arriving during the final battle of ''ComicBook/CivilWar''... and making everyone stop fighting and focus on the real menace. Oh, and Nova calls both Stark and Rogers [[WhatAnIdiot complete idiots]].
** And again in an issue of ''Comicbook/{{Exiles}}'' set in a world where the Annihilation Wave had been ''directed'' at Earth; apparently Annihilus was defeated by the Comicbook/IncredibleHulk between ''PlanetHulk'' and ''ComicBook/WorldWarHulk'', and he decided this would be an effective means of getting his vengeance.
** ''ComicBook/WarOfKings'' is mostly about the Inhumans and the Shi'ar, but includes a Bat Family Crossover between the two titles that launched out of ''Annihilation''; ''Comicbook/GuardiansOfTheGalaxy'' and ''Nova''.
** Ditto its sequel, ''Annihilation: Conquest'', which has exactly the same structure (only difference is that one mini was this time replaced with the ''Nova'' ongoing series as tie-in) and has no influence on any other comics.
* ''The Janus Directive'' was a 1989 crossover between DC's secret-ops-themed titles: ''ComicBook/SuicideSquad'', ''ComicBook/{{Checkmate}}'', ''ComicBook/CaptainAtom'', ''Comicbook/{{Manhunter}}'', and ''Firestorm''.
* ''The Children's Crusade'' was a crossover through the Creator/VertigoComics annuals in 1993-94. Although this was during the time Vertigo was part of Franchise/TheDCU (especially the titles involved: ''Comicbook/BlackOrchid'', ''Comicbook/SwampThing'', ''Comicbook/AnimalMan'' and ''Comicbook/DoomPatrol''; characters from ''Comicbook/TheSandman'' and ''ComicBook/{{Hellblazer}}'' were featured, but didn't get titles), no non-Vertigo characters even noticed.
* Franchise/TheDCU also had ''Trinity'', in which their three SpacePolice organisations, the Franchise/GreenLantern Corps, the Darkstars and [[Comicbook/{{Legion Of Super-Heroes}} L.E.G.I.O.N.]] had to work together against ancient Maltusian entities that predated the Guardians and Controllers.
* ''Black Reign'', a crossover between ''[[ComicBook/JusticeSocietyOfAmerica JSA]]'' and ''ComicBook/{{Hawkman}}'', both written by Creator/GeoffJohns at the time.
* ''Way of the Warrior'', a crossover between ''[[Franchise/JusticeLeagueOfAmerica Justice League America]]'', ''[[Franchise/GreenLantern Guy Gardner: Warrior]]'' and ''ComicBook/{{Hawkman}}''.
** The ''Justice League'' titles also had ''Breakdowns'' (''Justice League America''/''Justice League Europe'') and ''Judgement Day'' (''Justice League America''/''Justice League International''/''Justice League Task Force'').
* "Convergence", a crossover between the four titles of Franchise/TheDCU's "Weirdoverse" (a late 90s group of titles that amounted to "Vertigo Lite"): ''Comicbook/ChallengersOfTheUnknown''; ''Comicbook/ScareTactics''; ''[[ComicBook/DoctorFate The Book Of Fate]]''; and ''Night Force''.
* ''Comicbook/{{Shadowland}}'' did this for Marvel's street-level heroes, such as ComicBook/{{Daredevil}}, ComicBook/{{Luke Cage|HeroForHire}} and ComicBook/ThePunisher.
* Franchise/SpiderMan's [[ComicBook/TheCloneSaga Clone Saga]] was essentially one of these, albeit one stretched out for OVER TWO YEARS, and requiring you to read all four Spider-Man titles to follow.
** A shorter followup to the Clone Saga was ''Identity Crisis'' ([[ComicBook/IdentityCrisis no, not that one]]), in which Spider-Man creates four new heroic identities after a $5 million bounty makes it hard to operate in his normal identity.
** 2011 has a big Spider-Man centric story coming in the form of ''ComicBook/SpiderIsland,'' which does include other Marvel characters but is contained to the main Spider-Man title, 2 tie-in minis, a one-shot and tie in through Venom's title.
** And 2014 has probably the biggest Spider Family Crossover of all time, ''ComicBook/{{Spiderverse}}'', which features pretty much EVERY SINGLE spider themed hero (and sometimes villain) that Marvel could legally include and/or remember.
** ''Comicbook/DeadNoMoreTheCloneConspiracy'' crosses over with ''Comicbook/{{Silk}}'' and a ''Prowler'' miniseries, as well as featuring Comicbook/SpiderGwen and Comicbook/ScarletSpider.
* ''ComicBook/FallOfTheHulks'' for ''Comicbook/IncredibleHulk'' and ''[[ComicBook/RedHulk Hulk]]'', plus a number of minis and one-shots.
* The [[Comicbook/TheAvengers Avengers]]-related titles have had:
** ''Acts of Vengeance'', the first major crossover storyline involving the core Avengers titles which also involved the ComicBook/FantasticFour and had a loose tie-in with other series. The premise was that Loki several supervillains were to trade arch-nemeses and face off against heroes they didn't usually face.
** ''[[ComicBook/OperationGalacticStorm Galactic Storm]]'', in which every Avengers title at the time was involved in a war between the Kree and the Shi'ar.
** ''ComicBook/TheCrossing'', where Kang the Conqueror (later {{Retcon}}ned to be Immortus) manipulates one of the Avengers into becoming a murderer.
** ''First Sign'', when a new Zodiac takes Manhattan by creating a general blackout.
** ''Live Kree or Die'', with the Kree Lunatic Legion trying to use Carol Danvers' half-Kree DNA and terrigen mists to make all humanity into Kree which, if it backfires, would end life on Earth.
* "The Culling", which involves ''ComicBook/{{Superboy}}'', ''ComicBook/TeenTitans'', and ''Legion Lost''; ''The Ravagers'' spun out of this event.
* "ComicBook/ThroneOfAtlantis": a crossover between ''Justice League'' and ''Aquaman'' which chronicles an invasion of the surface world by Aquaman's brother, Ocean Master, and the forces of Atlantis.
* "ComicBook/TrinityWar" has the ''[[Franchise/JusticeLeagueOfAmerica Justice League]]'', ''[[ComicBook/JusticeLeagueOfAmerica2013 Justice League of America]]'', and ''ComicBook/JusticeLeagueDark'' involved in a confrontation between the Trinity of Sin: [[ComicBook/TrinityOfSinPandora Pandora]], ComicBook/ThePhantomStranger, and ComicBook/TheQuestion.
* The ComicBook/Marvel2099 line had its lone crossover with "Fall of the Hammer". Later, "One Nation Under Doom" storyline was mainly played on the pages of ''Doom 2099'', but it had an effect on the other titles as well.
* Comicbook/TheBlackVortex event in 2015 only involves Marvel's cosmic titles, including ''Comicbook/GuardiansOfTheGalaxy'', ''Comicbook/{{Nova}}'', etc. The X-Men are the only Earth-based heroes involved, and that's mainly due to their previous encounter with the All-New X-Men and Comicbook/KittyPryde dating Star-Lord.
* ''Spider-Women'' has ComicBook/{{Silk}}, [[ComicBook/SpiderWoman2014 Jessica Drew]], and ComicBook/SpiderGwen teaming up after the first two end up stranded on Earth-65 (Gwen's home universe) by Silk's evil counterpart. It starts with an independent issue called "Alpha", then cycles through each of the superheroines' solo series and ends with another independent issue aptly called "Omega".

[[folder:Live-Action TV]]
* ''Film/AMuppetFamilyChristmas'', which goes beyond the regular Muppet cast to include other cornerstones of the creations of Creator/JimHenson, such as ''Series/SesameStreet'', ''Series/FraggleRock'', and ''WesternAnimation/MuppetBabies''.
* There was talk of doing one of these for ''Series/LawAndOrder'', ''Series/LawAndOrderSpecialVictimsUnit'', and ''Series/LawAndOrderCriminalIntent'' when the latter launched, with all three shows investigating a potential terrorist attack on New York City from different angles. [[TooSoon And then 9/11 happened.]]
* Kamen Riders often meet each other in their movies, although given the sheer [[FantasyKitchenSink variety]] of the Franchise/KamenRider verse, this could count more as a CrisisCrossover. ''Film/KamenRiderXSuperSentaiSuperHeroTaisen'' and its sequels wander into CrisisCrossover territory.

[[folder:Pro Wrestling]]
* While there are plenty of cross promotional events in pro wrestling that do not qualify, sometimes promotions will establish widespread, long term alliances that create a lasting continuity between them. Wrestling/{{N|ational Wrestling Alliance}}WA Showtime All-Star Wrestling and NWA Smokey Mountain doing a joint event, for instance, as the NWA members acknowledge the same champions and have a say in the NWA's general direction. Similar cases include the World Wrestling Network (EVOLVE, Full Impact Pro, etc), Global Pro Wrestling Alliance (Wrestling/ProWrestlingZero1, Wrestling/ProWrestlingNoah, etc) and World Wrestling League (Wrestling/{{CMLL}}, Wrestling/{{TNA}}, ect).
* Promotions overseen by the Box y Lucha Libre Comision tend to keep luchadors, luchadoras and mini estrellas seperate from one another in competition. The most common place wrestlers from all three designations match up against each other under such circumstances is "lightweight" division, which predates the comision's acceptance of luchadoras and the mini estrella concept entirely.
* Sometimes a promotion will have multiple branches, each with their own champions and angles. The International Wrestling Association was Puerto Rican but also had a popular Japanese branch and would bounce wrestlers between the two. Wrestling/UltimoDragon's Toryumon was largely Mexican based but had a Japanese branch, which eventually became Wrestling/DragonGate and went on to set up branches in the USA and UK, who it would rotate talent through.
* With the collapse of the territory system, many professional wrestling promotions have opened up or contracted smaller promotions to act as "farm leagues" to train new talent for their rosters. Since this often results in "developmental" losing its biggest money makers, the larger and often more popular promotion will loan some members of its own roster to help the smaller one keep crowds interested. Wrestling/{{WCW}} had the Heartland Wrestling Association for instance and gave national exposure to some of its stars, such as Shark Boy. Wrestling/{{Chikara}} meanwhile has its "Wrestling IS" affiliates, one of which (RESPECT) used to be a showcase for Wrestling/RingOfHonor and Wrestling/{{SHIMMER}} trainees.
* Some wrestling promotions are considered "sisters", either due to an overwhelmingly shared roster, mutual involvement or ownership from the same behind the scenes figures, reliance on the same distributors and various other reasons, such as Wrestling/{{CZW}} and the Maven Bentley Association, where the owner of the latter acts as an authority figure in the former.
* During its "brand extension era", Wrestling/{{WWE}} was divided into two different brands, one being [[Wrestling/WWERaw Monday Night Raw]] and its BShow, Sunday Heat, the other being [[Wrestling/WWESmackdown Thursday Night Smackdown]] and its BShow, Velocity. It was rare to see a wrestler affiliated with one brand have any interaction whatsoever with a wrestler from the other outside of The Wrestling/RoyalRumble and Wrestling/WrestleMania, making those two events bat family crossovers.
* Some promotions act as "parents" in order to others, such as when Wrestling/DramaticDreamTeam experimented with two "child" Joshi promotions, TJP and Union Pro, in the 2010s.[[/folder]]

[[folder:Video Games]]
* Whether it be ''VideoGame/MarioKart'', ''VideoGame/MarioParty'', or the plethora of sports titles based on the ''Videogame/SuperMarioBros'' series, you'll be sure they'll add some characters and settings from the ''VideoGame/DonkeyKongCountry'' series. In fact, [[WhatCouldHaveBeen they were planning to have Donkey Kong himself participate in]] ''[[{{Crossover}} Mario & Sonic at the Olympic Games]]'' (DK's model was ultimately DummiedOut, but he made it into the sequel). They also threw in ''VideoGame/{{WarioWare}}'' in these titles, though its representation is not as pronounced. All we got basically was art of Wario from the ''[=WarioWare=]'' series on the walls of ''Mario Power Tennis''[='=]s Wario Factory stage, and the Wario Bike in ''Mario Kart Wii'' -- none of Wario's supporting cast from the ''[=WarioWare=]'' series has actually shown up in these games yet. With that said, ''[[VideoGame/DrMario Dr. Mario 64]]'' features almost every character that appeared in ''VideoGame/WarioLand3''. This makes it one of the few times where Mario gets the chance to appear alongside characters that originated from the Wario games.
** We could add ''Videogame/WiiSportsResort'' into the mix since Wuhu Island ends up having not one, but ''two'' courses in Mario Kart 7 (one of which features assets from both Wii Sports and Pilotwings), as well as a battle arena dedicated to a portion of the island.
* The ''VideoGame/StreetFighterAlpha'' prequel series formally introduced the ''VideoGame/FinalFight'' cast to Franchise/StreetFighter with the addition of Guy and Sodom in the first entry, followed by Rolento in ''Alpha 2'' and Cody in ''Alpha 3''. There's even an entire stage in both ''Alpha 2'' and ''Alpha 3'' featuring the rest of the ''Final Fight'' cast cheering on the fight. The ''VideoGame/StreetFighterIII'' series added another ''Final Fight'' alumni to the roster with the addition of Hugo (formerly known as Andore) in ''[=2nd Impact=]'' and Poison appears as playable fighter in ''VideoGame/StreetFighterXTekken'' and ''Ultra VideoGame/StreetFighterIV'' after having a passive role as Hugo's manager in ''III''. Recently, Abigail has been added to the roster of ''VideoGame/StreetFighterV''.
* The game-within-a-game ''Professor Layton's London Life'', packaged in some versions of ''VideoGame/ProfessorLaytonAndTheLastSpecter'', is a miniature BatFamilyCrossover - rather literally. The community of Little London is populated by sprite versions of Laytonverse characters from all of the games which had been released up to that point.
* ''VideoGame/JojosBizarreAdventureEyesOfHeaven'' features an original storyline in which every [=JoJo=] from parts 1-8 team up to take down DIO after he succeeds in [[AscendToAHigherPlaneOfExistence "obtaining Heaven"]] and gains nigh-unstoppable cross-timeline RealityWarper powers.

[[folder: Web Original ]]
* The ''Roleplay/GlobalGuardiansPBEMUniverse'' features a lot of these, especially when two campaigns were operating out of the same city.

[[folder:Western Animation]]
* The ''Franchise/TeenageMutantNinjaTurtles'' MilestoneCelebration ''WesternAnimation/TurtlesForever'' was a Turtles Family Crossover, teaming [[WesternAnimation/TeenageMutantNinjaTurtles1987 the 80's toon]] with [[WesternAnimation/TeenageMutantNinjaTurtles2003 the 00's toon]] [[spoiler:AND having them meet [[ComicBook/TeenageMutantNinjaTurtlesMirage the original comic Turtles]]]].