Bat Family Crossover

A lesser version of the Crisis Crossover, 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 The DCU, with Batman usually ordering all of the other heroes to stay out. Maybe Superman will show up for an issue or two, but only because, well, 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 Crisis Crossover would.

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Examples:

Anime & Manga

• Pretty Cure All Stars: The movies serve as a crossover for all of the Alternate Continuity Pretty Cure seasons. Eight have been made, with the last uniting thirteen seasons/eleven teams of magical girls for a grand total of 43 (plus one Original Generation character). Since the series has become a Long Runner, later entries in this series drop the All Stars name and only unite the most recent three seasons at most. However, the 2018 All Stars Memories movie features all 55 main Cures up to that point, spanning 15 seasons from Futari wa Pretty Cure to HuGtto! Pretty Cure; it holds a Guinness World Record for "most magical warriors in one anime film". The main Hugtto! series did its own crossover which features even more non-Cure characters on top of that, bumping the number up to over 60.
• In the 1980s, Studio Pierrot did a movie with the heroines of their magical girl shows teaming up.
• Yu-Gi-Oh!: Bonds Beyond Time has the main characters of the first three series team up.
• The movie "Grendizer, Getter Robo G, Great Mazinger: Battle! Giant Sea Beast" that feature some of famous Go Nagai mecha shows fight the Dragosaurus, a mysterious prehistoric animal.

Audio Plays

• The Big Finish Doctor Who 50th anniversary Milestone Celebration 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 Crisis Crossover would have included Bernice Summerfield, Gallifrey, Jago & Lightfoot, and the Intrusion Countermeasures Group).

Comic Books

• From the Batman titles themselves, and the Trope Namers, though not the Trope Codifiers:
  • Batman: Knightfall
  • Batman: Contagion
  • Batman: Legacy
  • Batman: Cataclysm
  • Batman: No Man's Land. 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: Bruce Wayne: Murderer/Fugitive. Again, Superman made an appearance, but....
  • Batman: War Games
  • Fresh Blood was a 2005 storyline that ran through Robin and Batgirl.
  • 2011 has a rather odd example. "Judgement on Gotham" is a crossover centered on 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: Red Robin and Gotham City Sirens.
  • Batman's two major titles (Detective Comics and Batman itself) were interconnected for several years before Crisis on Infinite Earths. From 1982 to 1986, there was nothing but Bat Family Crossovers, and stories from this era include the debuts of Jason Todd, Killer Croc, Black Mask, and Nocturna.
  • Batman (Grant Morrison):
    • The Resurrection Of Ras Al Ghul and Batman R.I.P. are two examples from 2008. However, RIP's true conclusion, the "death" of Batman, occurs in Final Crisis.
    • Following RIP and Final Crisis in 2009 was Batman Battle For The Cowl, which encompassed three miniseries and several one-shots.
  • Batman (2011):
    • The Night of the Owls crossover from May/June 2012. Building on the "Court of Owls" arc, nearly every single Bat-Family book (save for Batwoman which was already in a story arc in Batwoman (New 52), and Batman Incorporated (2010), 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 Elite Mooks of the story. Even All-Star Western (set in the past with Jonah Hex), Birds of Prey (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 Justice League book.
    • Death of the Family featured the return of The Joker and how his return affects Gotham.
  • Batman (2016):
    • The Joker War, running through Batman (James Tynion IV), Nightwing (Rebirth), Batgirl (Rebirth), Catwoman and Detective Comics (Rebirth)
    • Fear State, running through Batman (James Tynion IV), Catwoman, Detective Comics, Harley Quinn, I Am Batman and Batman: Urban Legends
  • Robin War, running through We Are Robin, Robin: Son of Batman, Grayson, and Detective Comics, with tie-ins of Gotham Academy, Teen Titans and Red Hood/Arsenal.
  • Gothtopia, running through Detective Comics, Batgirl, Batwing, Catwoman and Birds of Prey.
• Best Defense, running through solo stories for each of the original four members of The Defenders, then ending in a Defenders one-shot.
• Green Lantern:
  • The Death of Superman (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 Geoff Johns took over the main book in the 2000s:
    • Sinestro Corps War 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 Blue Beetle. People like Superman and the Teen Titans did figure into some tie-ins as well, but only as background or extended cameos.
    • Blackest Night (2009) was originally envisioned as one of these before being expanded to full-blown Crisis Crossover 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 Cross Through, Brightest Day, 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 New 52 status quo, including canceling Emerald Warriors and adding new Red Lanterns and New Guardians books.
    • Rise of the Third Army in 2012.
    • Wrath of the First Lantern in 2013.
    • A short crossover, Green Lantern: Lights Out, happened in October 2013. It started in Green Lantern, ran through Green Lantern Corps, Green Lantern: New Guardians, and Red Lanterns before concluding in the second Green Lantern annual. It involved the Lantern corps coming together to stop an ancient being named Relic.
    • The 2014 storyline Green Lantern: Godhead began in New Gods: Godhead, and goes through Green Lantern, Green Lantern Corps, Green Lantern: New Guardians, Red Lanterns, Sinestro, before concluding in Green Lantern Annual. A crossover with New Gods, the storyline follows Highfather's attempt to gain one ring from each Lantern Corp to help him win against Darkseid.
• 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.
  • 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 Green Lantern that basically ran concurrently with the final Superman issues, showing just how displeased Hal Jordan was with the destruction of his hometown.
  • The Fall of Metropolis: With Lex Luthor's cloned body succumbing to Clone Degeneration, 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 Superboy's own title tied in with the arc due to his own failing health from the clone disease, while 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 Intercontinuity Crossover, featuring titles from the Superman family crossing over with several titles published by Milestone Comics.
  • 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 60th Anniversary.
  • The various New Krypton stories, from 2008-2010.
  • 2012 gives us H'el on Earth, which has Superman, Superboy and Supergirl trying to stop a mysterious Kryptonian from resurrecting Krypton at the expense of Earth. The only Super-book not involved is Action Comics, 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 H'El all travel back in time to before Krypton's destruction.
  • 2013's Krypton Returns, a sequel to H'el on Earth
  • 2014's Red Daughter of Krypton, which runs through Supergirl (2011) and Red Lanterns
  • Superman: Doomed
  • Superman: Truth
  • Superman: Savage Dawn
  • The Final Days of Superman
  • Escape from the Phantom Zone
  • House of Brainiac, the first Super Family Crossover of the 2020s as well as the Dawn of DC
• Rotworld crosses between the Red, the Green, and associated characters (and Frankenstein: Agent of S.H.A.D.E.) in their fight against the Rot/the Black.
• The vast majority of the various X-Men crossovers are Bat Family Crossovers, 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.) This is despite the fact that such stories often would have severe implications for the world as a whole; the typical justification is that the X-teams manage to solve the crisis before it gets to that point, with the Avengers just happening to not notice even though the events so often take place in New York City. 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 Examples/Trope Codifiers, 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, The Fall of the Mutants (with 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 Age of Apocalypse.
  • 2011 has one of these with the AoA inspired Age of X storyline running through X-Men: Legacy and New Mutants.
  • The mid-2000s saw Messiah Complex which then led to Second Coming. Both of which spun off the even events of the Crisis Crossover House of M, and were eventually book ended by another one, Avengers vs. X-Men.
  • Notable exception: Days of Future Present, a 1990 annual titles crossover, in which the Fantastic Four played a crucial part.
  • 2013 saw the X-Men through "Battle of the Atom", while 2014 was the "Death of 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 Guardians of the Galaxy in 2013, and once again with them (and Nova) in 2015's The Black Vortex.
• Any number of Golden Age Marvel Family (the Shazam!! group) crossovers, who might be the originators of this.
• Marvel's Annihilation wasn't a crossover, but a set of linked Mini Series 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 Civil War.
  • Lampshaded in Nova (2007) #2, where Nova, a native Earthling who was involved in Annihilation, comes back. He and 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 Civil War... and making everyone stop fighting and focus on the real menace. Oh, and Nova calls both Stark and Rogers complete idiots.
  • And again in an issue of Exiles set in a world where the Annihilation Wave had been directed at Earth; apparently Annihilus was defeated by the Hulk between Planet Hulk and World War Hulk, and he decided this would be an effective means of getting his vengeance.
  • War of Kings is mostly about the Inhumans and the Shi'ar, but includes a Bat Family Crossover between the two titles that launched out of Annihilation; Guardians of the Galaxy 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: Suicide Squad, Checkmate, Captain Atom, Manhunter, and Firestorm.
• The Children's Crusade was a crossover through the Vertigo Comics annuals in 1993-94. Although this was during the time Vertigo was part of The DCU (especially the titles involved: Black Orchid, Swamp Thing, Animal Man and Doom Patrol; characters from The Sandman (1989) and Hellblazer were featured, but didn't get titles), no non-Vertigo characters even noticed.
• The DCU also had Trinity, in which their three Space Police organisations, the Green Lantern Corps, the Darkstars and 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 JSA and Hawkman, both written by Geoff Johns at the time.
• Way of the Warrior, a crossover between Justice League America, Guy Gardner: Warrior and Hawkman.
• Justice League
  • Breakdowns (crossovered Justice League America and Justice League Europe)
  • Judgement Day (Justice League America, Justice League International and Justice League Task Force).
  • Trinity War featured a crossover between the three main New 52 Justice League titles, Justice League (2011), Justice League Of America New 52 and Justice League Dark
  • Justice League vs. Suicide Squad featured the revelation of the Suicide Squad to the members of the Justice League, which would later launch Justice League of America (Rebirth)
  • The Witching War featured a crossover between Wonder Woman (Rebirth) and Wonder Woman 2018.
• "Convergence", a crossover between the four titles of The DCU's "Weirdoverse" (a late 90s group of titles that amounted to "Vertigo Lite"): Challengers of the Unknown; Scare Tactics (DC Comics); The Book Of Fate; and Night Force.
• Shadowland did this for Marvel's street-level heroes, such as Daredevil, Luke Cage, and The Punisher.
• Spider-Man:
  • The Clone Saga was essentially one of these, albeit one stretched out for OVER TWO YEARS, and requiring you to read all four of the Spider-Man titles running at the time to follow.
  • A shorter followup to the Clone Saga was Identity Crisis (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.
  • Spider-Island, which does include other Marvel characters but is contained to the main Spider-Man title, 2 tie-in minis, a one-shot, and a tie-in through Venom's title.
  • SpiderVerse and SpiderGeddon are the best examples of this, as they feature pretty much EVERY SINGLE spider-themed hero (and sometimes villain) across the multiverse that Marvel could legally include and/or remember, while creating new ones such as sp//dr and Spider-Gwen.
  • Dead No More: The Clone Conspiracy crosses over with Silk and a Prowler miniseries, as well as featuring Spider-Gwen and Scarlet Spider.
  • Spider-Women crosses over Silk, Jessica Drew, and Spider-Gwen.
  • The Amazing Spider-Man (2018) includes the Sins Rising and Last Remains story arcs, which feature Spider-Gwen, Spider-Woman, Miles Morales, Silk and Anya Corazón. Interestingly, for most of the run, the other Spiders are working against Peter Parker; firstly because he's trying to save Norman Osborn, and later because they've all been possessed by Kindred.
• Fall of the Hulks for The Incredible Hulk and Hulk, plus a number of minis and one-shots.
• The Avengers-related titles have had:
  • Acts of Vengeance, the first major crossover storyline involving the core Avengers titles which also involved the Fantastic Four 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.
  • Galactic Storm, in which every Avengers title at the time was involved in a war between the Kree and the Shi'ar.
  • The Crossing, where Kang the Conqueror (later Retconned 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.
• Teen Titans
  • Total Chaos (which actually predates Knightfall) focuses on the then-Titans related titles (New Titans, Deathstroke The Terminator and Team Titans) following a lingering plot point from Titans Hunt where the Team Titans, a new future version of the Teen Titans from an alternate timeline, travel to the past to kill Donna Troy's baby before he grows up to become the evil Lord Chaos. This event launches the aforemented Team Titans book.
  • Crimelord-Syndicate War saw a crossover between the Post-Zero Hour era of New Titans, Deathstroke The Terminator and Darkstars
  • The Siege Of Zi Charam
  • Teen Titans/Outsiders: The Insiders
  • Deathtrap
  • The Culling, focused upon the mysterious Harvest and N.O.W.H.E.R.E., the main antagonistic force behind Superboy (2011) and Teen Titans (New 52), as well as a tie-in with Legion Lost; The Ravagers spun out of this event.
  • The Lazarus Contract
  • The Terminus Agenda
• Throne of Atlantis: 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.
• Trinity War has the Justice League, Justice League of America, and Justice League Dark involved in a confrontation between the Trinity of Sin: Pandora, The Phantom Stranger, and The Question.
• The Marvel 2099 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.
• The Black Vortex event in 2015 only involves Marvel's cosmic titles, including Guardians of the Galaxy, 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 Kitty Pryde dating Star-Lord.
• Revolutionary War was a 2014 event centred around the Marvel UK titles introduced in the 1990s, plus other British heroes such as Pete Wisdom and Captain Britain.
• War of the Bounty Hunters is a 2021 crossover event between all of the then-concurrent Star Wars Expanded Universe comic titles being published by Marvel — Star Wars (Marvel 2015), Star Wars: Darth Vader (2020), Star Wars: Bounty Hunters, and Star Wars: Doctor Aphra — as well as central miniseries and several oneshots, all built around the fight between various factions over the block of carbonite containing Han Solo.

Fan Works

• Subverted in Amazing Fantasy. Izuku lucked out in getting his powers when he did. Peter says he dodged a shitshow involving interdimensional vampires, alluding to the events of Spider-Verse and Spider-Geddon.
• Skyhold Academy Yearbook is a Lighter and Softer combination of this and High School AU for the Dragon Age franchise. It features characters from all of the games and supplemental materials, many of whom would never normally interact with each other (or at least not pleasantly), in a modern setting framed around a Boarding School.

Films — Animation

• The Super Mario Bros. Movie: Much of the Donkey Kong Country cast appears in what is otherwise a movie focused on the Super Mario Bros. end of the Shared Universe, including Cranky, Diddy, Dixie, and Swanky alongside DK himself. While Cranky Kong did originally share his debut appearance with Mario and DK himself would later appear in the sequel, he and his fellow Kongs usually only join the Mario characters in spin-off games like Mario Kart and Mario Party (and usually just Donkey and Diddy). Several Yoshis are also seen, and Foreman Spike makes a couple of appearences in a few scenes.

Films — Live-Action

• Spider-Man: No Way Home is such a big Crisis Crossover that it brings together the characters, and therefore universes, of the Spider-Man films already in the Marvel Cinematic Universe (and also Doctor Strange with a cameo by Wong), with the two cinematic predecessors and pits the three Spider-Man incarnations against a Legion of Doom consisting of most of their villains. It also crosses over further with a mid-credits cameo of Tom Hardy's Eddie Brock and Venom.

Live-Action TV

• A Muppet Family Christmas, which goes beyond the regular Muppet cast to include other cornerstones of the creations of Jim Henson, such as Sesame Street, Fraggle Rock, and Muppet Babies.
• There was talk of doing one of these for Law & Order, Law & Order: Special Victims Unit, and Law & Order: Criminal Intent when the latter launched, with all three shows investigating a potential terrorist attack on New York City from different angles. And then 9/11 happened.
• Kamen Riders often meet each other in their movies, although given the sheer variety of the Kamen Rider verse, this could count more as a Crisis Crossover. Kamen Rider × Super Sentai: Super Hero Taisen and its sequels wander into Crisis Crossover territory.

Professional 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. NWA 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 (Pro Wrestling ZERO1, Pro Wrestling Noah, etc) and World Wrestling League (CMLL, TNA, etc).
• 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. Último Dragón's Toryumon was largely Mexican based but had a Japanese branch, which eventually became Dragon Gate 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. WCW had the Heartland Wrestling Association for instance and gave national exposure to some of its stars, such as Shark Boy. Chikara meanwhile has its "Wrestling IS" affiliates, one of which (RESPECT) used to be a showcase for Ring of Honor and 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 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", WWE was divided into two different brands, one being Monday Night Raw and its B Show, Sunday Heat, the other being Thursday Night Smackdown and its B Show, 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 Royal Rumble and WrestleMania, making those two events bat family crossovers.
• Some promotions act as "parents" to others, such as when Dramatic Dream Team experimented with two "child" Joshi promotions, TJP and Union Pro, in the 2010s. A few wrestlers being used in minor DDT roles would be more important on the "child" shows and also interact with wrestlers otherwise not being booked by DDT.

Tabletop Games

• Word of God is that Sentinels of the Multiverse represents these. For instance, the Wraith has repeatedly fought and defeated Spite in her solo adventures, but the in-game battle against him represents a larger confrontation where she needs to call in help to take him down.

Theatre

• Several Tsukipro plays have had "guest" characters, main characters from other Tsukipro series, appearing in a different unit's play. They will generally fill supporting roles in the story (unless Shun shows up, because he will have an outsize role in the plot no matter what), and they won't appear in the dance live (with the exceptions of "Dear Dreamer" in Tsukino Empire 2, and the SeleaS junior pair in Shiawase Awase before there was a Megasta.
  • All 8 SQ members appear in Tsukino Empire : Unleash Your Mind (Tsukista episode 8)
  • Haru, Aoi, Yoru, Rui, Iku, and Shun of Tsukiuta appear in Tsukino Empire 2: Beginning of the World. Shortly before the performances, they were revealed to be the only 6 actors who were not graduating. 8 of the 9 Alivestage members also appear, with Nozomu (live-action film actor Chiharu Sawashiro) appearing in a video message.
  • Kurotenko (Hajime) appears in ''Tengoku'' (Alivestage episode 5)
  • Rui of Procellarum, Kakeru of Six Gravity, Kensuke of Growth, and Soshi and Sora of SOARA appear in Theatre/Machine Elements zwei: Akai Hono (SQS episode 6).
  • Tsubasa, Dai, Issei, Ichiru, and Shu of SQS are appearing in Tsukista 12, Ura-Zanshin.

Video Games

• Whether it be Mario Kart, Mario Party, or the plethora of sports titles based on the Super Mario Bros. series, you'll be sure they'll add some characters and settings from the Donkey Kong Country series. In fact, they were planning to have Donkey Kong himself participate in the first Mario and Sonic at the Olympic Games (DK's model was ultimately Dummied Out, but he made it into the sequels). They also threw in 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, Dr. Mario 64 features almost every character that appeared in Wario Land 3. This makes it one of the few times where Mario gets the chance to appear alongside characters that originated from the Wario games. Wii Sports Resort is also added 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 Resort and Pilotwings Resort), as well as a battle arena dedicated to a portion of the island.
• Fire Emblem Heroes is a mobile crossover game featuring characters from various Fire Emblem games.
• The Street Fighter Alpha prequel series formally introduced the Final Fight cast to Street Fighter 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 Street Fighter III 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 Street Fighter X Tekken and Ultra Street Fighter IV after having a passive role as Hugo's manager in III. Recently, Abigail has been added to the roster of Street Fighter V, with Lucia coming later afterwards. Street Fighter 6 would also feature an Wide-Open Sandbox set primarily in Metro City.
• The game-within-a-game Professor Layton's London Life, packaged in some versions of Professor Layton and the Last Specter, is a miniature Bat Family Crossover - 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.
• JoJo's Bizarre Adventure: Eyes of Heaven features an original storyline in which every JoJo from parts 1-8 team up to take down DIO after he succeeds in "obtaining Heaven" and gains nigh-unstoppable cross-timeline Reality Warper powers.
• Downplayed by River City Girls, which involves characters from other Technos properties, specifically Double Dragon and The Combatribes, and integrates them into the game's universe as shopkeepers, enemies and bosses.
• Yuki Yuna Is A Hero A Sparkling Flower is a mobile crossover where various Heroes from Yuusha De Aru come together to fight Vertexes.

Western Animation

• The Teenage Mutant Ninja Turtles Milestone Celebration Turtles Forever was a Turtles Family Crossover, teaming the 80's toon with the 00's toon AND having them meet the original comic Turtles.
  • The 2003 show's 2012 successor would also feature numerous appearances from the 80s cartoon Turtles, complete with their original voice actors reprising their roles.

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