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Crisis Crossover

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The Mini Marvels sum it up.

"So first there was The Infinity Gauntlet, then Infinity War, and now there's Infinity Crusade. It must be like an annual convention for super heroes that Warlock runs for them. It gives them all a chance to get together and network and catch up on each other's continuity, exchange business and trading cards, pose for holograms with each other, stuff like that. They probably just wish the things were held in San Diego or someplace fun, where everyone could hang out at the beach."
Marvel Year in Review 1993

A company-wide Massive Multiplayer Crossover which sweeps all the "mainstream" characters in a ficton into a single storyline and, often, takes their own series along for the ride.

The original was Crisis on Infinite Earths, the event which changed The DCU so much that its history is permanently defined as "pre-Crisis" and "Post-Crisis". It went from April 1985 to March 1986, tying in almost every other series DC published at the time.

After this, it became more and more popular, with not just Marvel and DC but other companies — Malibu, Wildstorm, etc. — getting into the act. Eventually, though, readers were sick of it, and it tapered off, before returning to the scene in 2004 when DC and Marvel both launched new Crisis Crossovers that started Metaplots that are still running today. Time will tell how long it takes for readers to get sick of it this time (if they aren't already).


The advantage of a Crisis Crossover to a publisher is that people reading the main story will want to read the various crossovers, thus increasing sales. The disadvantage is that people who only want to read one of the titles that cross over may be turned off by having to buy all the tie-ins to understand it, thus decreasing sales. In practice, it can go either way, but there's a reason the technique was abandoned for awhile.

In comics, there are several subtypes:

  • The classic is a single mini- or maxi-series, with other titles having a couple issues branded with the crossover's title. Crisis on Infinite Earths itself and Secret Wars II are of this type.
  • A second kind is the all-annuals crossover. Many comic series have, in addition to their twelve monthly titles per year, a thirteenth plus-sized annual. An all-annuals crossover takes place entirely in one year's annuals (plus, perhaps, a special bookending issue or two). Armageddon 2001 and Atlantis Attacks! are examples.
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  • Fifth Week Events. Most comics come out monthly, most comics come out on Wednesday, and most months have four Wednesdays. Four times a year, however, there will be a month with a fifth Wednesday. Instead of moving titles around so that (for example) some comics that usually come out on the fourth Wednesday are pushed to the fifth, the publisher may just schedule an event for that week. Example: Sins of Youth
  • Self-contained: A crossover that doesn't crossover. The heroes take a break from their own books to participate in a mini-series, then return to their own books. Examples: Secret Wars and Cosmic Odyssey.
  • The opposite is the crossover without a self-titled mini-series; the whole crossover takes place in extant books. Marvel used to do this a lot, as with Inferno and Acts of Vengeance.
  • The current format is an expansion of the first type: There will be a core series, one or more spinoff series, probably some one-shots, and crossover into regular titles. Blackest Night, for example, had a core mini-series, seven multi-issue spinoffs, a slew of one-shots (nominally numbered as "new" issues of long-dead series), and heavy crossover into both Green Lantern titles, among others.

When a comic slaps a big, visible "Crisis Crossover" logo on the cover, but only has a token Shout-Out to the Big Event that only peripherally affects the plot of the issue in question, that's a Red Skies Crossover. When a Crossover occurs that involves a couple of characters and their support, but doesn't necessarily affect the large universe, it's a Bat Family Crossover. When the various sets of characters do not interact with each other but still deal with a universal threat, it's a Cross Through. When the same characters from different Alternate Universes work/clash together in a Crisis Crossover, then it's an Intra-Franchise Crossover.


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    DC Comics 
  • Crisis on Infinite Earths (1985): The trope namer. Before CoIE, there were two major and nearly a dozen minor separate DCU "Earths" (read: realities), each with its own continuity. They didn't cross over, except when they did (or when a DC writer forgot who was supposed to be on which Earth and a DC editor didn't catch the goof). Afterwards: one Earth, one reality, and the biggest retconning of past events ever. Let one example serve for all: Pre-Crisis, there was Kara Zor-El, better known as Supergirl. During Crisis, she died. Post-Crisis, she had never existed due to the edict that, following the Man of Steel reboot, Superman was to the only surviving Kryptonian (although she did appear in the final arc of Peter David's Supergirl, "Many Happy Returns" and other places). To this day, nobody (save for a few people, namely Donna Troy and The Spectre) remembers her as she was then, though a new version of the character returned in Superman/Batman: The Supergirl from Krypton in 2005 and her death was retconned in the Convergence event. The first act of the "Multiverse Saga" dealing with the "Death of the Multiverse".
  • Legends (DC) (1987): This series was a crossover in which the evil god Darkseid tries to turn humanity against all its superheroes; it doesn't take. Legends was most notable for launching the semi-humorous Justice League International (the one with Blue Beetle) and the perennially popular supervillains-doing-espionage title Suicide Squad, as well as starting the career of third The Flash, Wally West. It also marked the post-Crisis debuts of Wonder Woman (after she was rebooted from scratch by George Perez and Greg Potter) and Captain Marvel.
  • Three events in 1988:
    • In Cosmic Odyssey (ironically the only one that was self-contained), Darkseid, the New Gods, and a group of super-heroes fight a giant shadow that Metron claims is the Anti-Life Equation's true form. Outside of John Stewart (no, not that one) acting like a rookie and causing an entire planet to explode due to his hubris, no one likes to talk about this story since making the Anti-Life Equation a giant shadow monster was a stupid idea.
    • In Millennium, the robotic Manhunters try to stop the Guardians of the Universe from giving a group of really bad ethnic stereotypes virtual Godhood; it doesn't work out. By contractual obligation, at least one secondary character from most of DC's titles turned out to be the Manhunters' molesnote , which was never mentioned again afterwords.
    • In Invasion!, a whole mess of alien planets get together and try to take over Earth to keep all the superbeings we keep producing under control; yet again, it doesn't work out. This crossover also introduced the Metagene Meta Origin concept in the DCU, as well as led to the launching of Justice League Europe and L.E.G.I.O.N., a 20th Century Legion of Super-Heroes spin-off title known mainly for having Lobo and Brainiac 2 on the roster.
  • Two in 1991:
    • War of the Gods wasn't a bad idea in theory: All the different godly pantheons in The DCU (the New Gods, plus the Olympians, the Asgardians, etc.) have at it and the various divinely-powered superheroes (Wonder Woman, Captain Marvel, etc.) get caught up in it. Unfortunately, writer George Perez made the mistake of double-booking himself drawing Marvel's The Infinity Gauntlet and writing/drawing War of the Gods at the same time, leading to War of the Gods suffering from bad writing.
    • Armageddon 2001: One of DC's top super-heroes will become the uber-villain "Monarch"! Except the ending (it was Captain Atom) gets leaked, meaning third-string character Hawk became Monarch instead. Monarch promptly disappeared until three years later, when he was retooled as Extant and became a flunky for A-List hero Hal Jordan, who went evil in the wake of The Death of Superman.
  • Eclipso: The Darkness Within (1992): Over the summer, DC retconned a B-List villain from the '60s into a serious threat capable of possessing anyone — up to and including Superman. Very little changes, other than the Heroic Sacrifice of Starman IV — whose book had been canceled anyway (and it apparently didn't take). Eclipso himself got a series out of it for about two years, notable as one of the few mainstream comic series with a villain as its protagonist at the time.
  • Bloodlines (1993): Whether you like this or not all depends on if you're a fan of the Dark Age. This was a Cross Through of all of DC's Annual series for 1993. A race of Xenomorph-like parasites invade and start killing people by draining their spinal fluid. A small percentage of people, however, gained superpowers by this, leading to the creation of a new bunch of Nineties Anti Heroes. Nothing really changed and these new heroes were eventually reduced to cannon fodder for Infinite Crisis, or else ending up in Comic-Book Limbo. The only notable result from this crossover being Garth Ennis' Hitman. Aside from that, it's probably best remembered for crossing over with two far-better known DC stories from the same time period: The Death of Superman and Knightfall, due to featuring the four replacement Supermen and the Azrael-Batman for most of the crossover.
  • Zero Hour!: Crisis in Time (1994): For this one, DC ended up pressing the reset button again. Well-Intentioned Extremist Parallax (a.k.a. Hal Jordan) plans to destroy the entire DC Universe and remake it in his image. Unlike Crisis on Infinite Earths, Zero Hour ended up changing relatively little (aside from completely rebooting the Legion of Super-Heroes and making Hawkman's continuity even more confusing) and a massive bus being dropped onto the Justice Society of America. And unlike Crisis on Infinite Earths, Zero Hour was met with mixed reviews.
  • Worlds Collide (1994): This was a major DC Comics/Milestone Comics crossover, which had to be handled carefully, since the DC characters were comics in the Milestone universe. It was a scintillating series in that the differences between similar characters such as Superman and Icon were examined. Perhaps the most entertaining was the relationship between Hardware and Steel, who had the same abilities and skills, but were at opposite ends of the Sliding Scale of Idealism vs. Cynicism. Since then, Milestone was folded into the DC universe, which seems even more poignant after the passing of Dwayne McDuffie.
  • A more straight example for Milestone was Shadow War, which included all of the titles in the line, using it to introduce titles like Xombi and Kobalt.
  • 1995's Underworld Unleashed saw Mark Waid killing off 90% of The Flash's rogue's gallery who he felt were too silly even for his Silver Age tastes (though this didn't last long and Waid was proven wrong in a BIG way later on) and introducing Neron, the de facto Satan of the DC Universe proper. It also saw a ton of DC villains selling their souls for grim and gritty revamps, of which only a small handful actually stuck.
    • In the afterword to the collected edition, Waid claims that killing and resurrecting the Rogues was the plan all along in order to protect them from unnecessary Darker and Edgier revision:
      Brian and I arranged for them to lie low in hell for a little while, if only to keep some knuckleheaded creator from, oh, say, turning Heat Wave into a living pillar of fire.
  • Final Nightnote  (1996): is probably the most fondly-remembered crossover from the 1990s, most likely because the whole thing became one huge Author's Saving Throw/Last Hurrah for Hal Jordan (writer Karl Kessel agreed to write the story for DC on the condition that he could give Hal a mercy killing/heroic sacrifice death). An alien weapon called a Sun-Eater arrives in the solar system and, surprisingly enough, eats the sun. After Earth's heroes try to keep their sunless world alive, Hal Jordan make a Heroic Sacrifice to rekindle the sun and redeem himself (of course, Redemption Equals Death). Also, the Post-Zero Hour Legion meets everyone in the DC Universe proper for the first time — and before his death, Hal resurrects Green Arrow off-panel, or rather shoehorned in retroactively in-panel by Kevin Smith about three years later. Realtime, of course.
  • Genesis (1997): John Byrne "kills off" Darkseid in a lame plot where the Source Wall breaks and everyone's powers start acting wonky. Nobody cares. Moving on...
  • DC One Million (1998): All DCU books stopped and became "<Title> #1,000,000" as the JLA and the rest of the DC Universe go into the future to fight Solaris the Sentient Sun, who wants to kill his creator Superman. As Grant Morrison stories go, you'll either love it or hate it. This crossover is certainly part of the main DCU canon (Hourman One Million becomes a major player in JLA, JSA and his own book). (The final issue of Morrison's later All-Star Superman features the present-day Solaris, and acts as a kind of origin story for the future society depicted in One Million — or rather, presumably an alternative version of that future society, since All-Star Superman is definitely not part of the main DCU canon.)
  • Day of Judgment (1999): Featured a then unknown Geoff Johns writing a story where the demons Neron and Etrigan steal the nigh-omnipotent powers of the Spectre. Hilarity Ensues, and the ghost of Hal Jordan ends up becoming the new Spectre. Led to the creation of the Sentinels of Magic - a group of DC's mystic heroes who then appeared absolutely nowhere.
  • Sins of Youth (2000): In an effort to promote Young Justice, DC produced this series, which was a special Crisis Crossover in which Young Justice, the JLA, the JSA, the Titans and as many others as the pencilers could cram into frame descended on the National Mall in Washington, D.C., for a rally, only to face the mother of all Fountain of Youth plots wherein nearly every character present was aged or de-aged. It only interrupted the monthly run of YJ and crossed over into Superboy, and was over within a month real-time, but the scale of the story and the villains' plot was worthy of this trope.
  • 2001 had two events:
    • Our Worlds at War featured an Omnicidal Maniac trying to destroy the universe via destroying Earth (with Brainiac-13 pulling up the rear to exploit the madness) and the entire universe teaming up in a galactic alliance to save the universe. Infamous for it's massive number of deaths (Guy Gardner, Martha and Johnathan Kent, Aquaman, Sam Lane, and Wonder Woman's mom Hippolyta), just about all of which were overturned, with Gardner and the Kents being upgraded to living within months of the storyline ending.
    • Joker's Last Laugh, tied very much to the other crossover (almost literally starting after Our Worlds At War had ended). This story had Joker infect all of the DC Universe's villains with chemicals turning them into Joker-lite mass murderers, after Joker is falsely told he has terminal cancer. Two notable scenes are when Joker Lampshades previous crises by desiring red skies for his plan, and Chuck Dixon spending the entire storyline effectively cursing out readers for asking why no one kills the Joker.
  • Identity Crisis (2004): This was the first book to use "Crisis" in its title since Zero Hour. It was a crossover, but not necessarily a crisis crossover — in fact, it was a very low-key murder mystery far more concerned with buried secrets and the personal lives of heroes than with blowing stuff up — but it did end up changing things, due to the nature of the secrets revealed rather than any cosmic shenanigans. It's also notable as it deretconed back into existence many pre-Crisis story lines from the Silver and Bronze ages, but at the same time made them Darker and Edgier. It turned B-list Teen Titans Villain Dr. Light into a rapist, revealing that his "bumbling" and "pathetic" status was the result of a magically-induced lobotomy. The story was eventually revealed to be the first part of a trilogy to "explore the DC heroes" in which they were put up against "a very personal threat". Its repercussions were felt throughout The DCU (leading to mini-Crisis Crossovers such as Villains United and the Day of Judgement sequel Day of Vengeance) until they coalesced in:
  • Infinite Crisis (2005-2006): Refugees from the original Crisis, who had been watching the DCU since, had decided that the events of Identity Crisis and the things that followed were the last straw, and returned to the universe to "set things right". As their version of setting things right involved destroying reality and replacing it with a "better" one, the current inhabitants of the DCU were less than pleased with the plan. Fighting ensued, and in the end a "soft reset" occurred — some things were changed but by and large, continuity remained the same (except for the Legion of Super-Heroes, which received its second complete reboot) — and the multiverse, gone since the pre-Crisis days, returned. Served as the second act of the "Multiverse Trilogy" as the "rebuild of the Multiverse" and the second act of the "Exploration Trilogy" by "putting the greatest odds against the heroes". Was immediately followed by:
  • 52 (2006-7): Basically the final act of the storyline of Identity Crisis and Infinite Crisis (story-wise). Innovative for its use of real time continuity, tossing Comic-Book Time out the window in favor of the 24 approach, published weekly, from May 2006 to May 2007, each issue represents a week of time in-universe, covering the "missing year" of the DCU, as after Infinite Crisis, all books were jumped forward "One year later". Written by a "dream team" of four writers (Geoff Johns, Greg Rucka, Mark Waid, and Grant Morrison) each of whom contributed something to every issue. It also followed the lives of minor characters of the DCU while the "Big Three" Batman, Superman, and Wonder Woman took the year off for various reasons, Widely considered to be one of the greatest story lines of the Modern Age. It also introduced the Modern Batwoman, and Renee Montoya as The Question.
  • Countdown to Final Crisis (2007-2008): Meant to act as a bridge between 52 and Final Crisis. It's remembered as "one of the worst comic storylines of all time", having by hampered by massive Executive Meddling, which led to an oversaturation of tie-ins resulting in even worse Archive Panic (How bad? Another reviled event comic, Amazons Attack!, ties into it... and that event has tie-in issues of its own!), and the main comic itself was riddled with plotholes and bad art. DC quickly worked to move the whole mess into Canon Discontinuity.
  • Final Crisis (2008): Picking up at the end of the year-long weekly series Countdown to Final Crisis and a mounting sense of crossover fatigue among fans, it faced an uphill battle, but the strength of its writer and artist (Grant Morrison and J. G. Jones) saw it through to sales success. The newly reincarnated Darkseid accomplishes his goal of ruling the human race as he unleashes the Anti-Life Equation on Earth, plunging Earth into a black hole that threatens to destroy the Multiverse. The heroes save all of existence, but at the high cost of several high profile casualties (including Martian Manhunter and Batman) and lots of dead civilians who died while Darkseid reigned. Served as the final acts of the "Multiverse Trilogy" ("the Final Crisis of the Multiverse") and the "Exploration Trilogy" ("the day that evil won").

    Final Crisis itself is a huge crossover dealing with multiple stories. In addition to the event proper, there was Final Crisis: Rogues' Revenge where the Flash's Rogues Gallery reject Libra's invitation to the new Secret Society and kill the murderous speedster Inertia just before the events of Final Crisis begins; Final Crisis: Revelations which takes place during Darkseid's siege of a controlled Earth as seen by the Spectre and the Question; and Final Crisis: Legion of Three Worlds (taking place after all the previously listed ) which has the titular 3 Legions fighting against Superboy-Prime and a new Time Trapper and his army of villains before being revealed as an older version of Prime, which ultimately lead to Prime returning powerless to his reconstructed Earth (but having to face the sins of his actions while in the Multiverse).
  • Blackest Night (2009): Following on from the events of the epic Sinestro Corps War storyline that proved to be infinitely more popular than the Countdown event that was happening at the same time, the culmination of a prophecy first mentioned in an Alan Moore penned back-up strip in "Tales of the Green Lantern Corps" back during the 80s. The best way to describe it is as Space Opera meets Zombie Apocalypse. As dead super heroes, super villains, and their families and friends are brought back to life by Nekron, the various color corps from Geoff Johns' run on Green Lantern must put aside their differences and fight to protect all life in the universe. While being heavily Green Lantern-centric, it crosses over with the entire DCU. Most books had at least one issue involved with the event.

    The whole thing was initially conceived as a Bat Family Crossover in the Green Lantern books, along the lines of Sinestro Corps War. As mentioned, the absolute success of Sinestro Corps War has lead DC to expand it into a full blown crossover. Even a few canceled books were temporary brought "back to life" for one shot issues just to add to this event. It now seems hard to imagine the relatively simple origins of this event given the hugeness it eventually grew to.
  • Brightest Day (2010): Following up from 'Blackest Night'', this was a year-long event dealing with the newly resurrected characters' attempts to rebuild their lives after being dead, and the quest for the newly created White Light Battery on Earth. In many ways it was more of a Cross Through; the books involved shared a feeling of making a fresh start but each one mostly followed their own story that was only tangentially connected to the main series.
  • Flashpoint (2011): This is to The Flash what Blackest Night was to Green Lantern. Barry Allen has woken up to find reality changed around him; now he needs to find out what the heck happened? His discovery of the truth behind the altered world quickly leads to a line-wide reboot on a scale not seen since the original Crisis.
  • Forever Evil (2013-14): Continuing off where Trinity War left off, the Crime Syndicate, the Justice League of a universe where everyone is evil, has arrived to the prime Earth and knocked the three Justice Leagues out cold in a bid to Take Over the World. Not every supervillain is happy about this new development, least of which is Lex Luthor, who leads Earth's native supervillains to stop the Syndicate from destroying what little they all value on Earth.
  • Convergence (2015): Brainiac uses his access to the Vanishing Point to pluck cities out of three pre-New 52 eras of DC history (the pre-Crisis on Infinite Earths era, the pre-Zero Hour! era, and the pre-Flashpoint era). Additionally, he also captured cities from various Alternate Universes from the DC Multiverse, such as the Tangent Comics universe, the WildStorm universe, and the Flashpoint universe. With 40 captive cities in total, Brainiac takes them to the mysterious world of Telos within domes, to observe them. But when Braniac mysteriously vanishes when attempting to gain yet another city from a doomed timeline, Telos itself releases them to see which world deserves to live amongst them all. The ensuing chaos sees a massive conflict that pits hero against hero and spans decades of continuity.
    • The 40 tie-in stories this event had were very well received (many of them brought back beloved characters and status quos that hadn't been seen in years or even decades). The main miniseries was much less popular.
    • The main effect this event had on the New 52 universe was that the Superman and Lois Lane of the Post Crisis/Pre-Flashpoint Universe immigrated to the New 52 Universe, as seen in Superman: Lois and Clark.
  • 2017 brings us two:
    • Dark Nights: Metal is the culmination of Scott Snyder's Batman run, in which the Justice League comes face to face with a "Dark Multiverse" with the crossover restoring many elements and characters that have been missing since the New 52 began.
    • Doomsday Clock is the self-contained example, coming off plot threads that have been built up since the DC Rebirth relaunch started, where the DC Universe crosses over with Watchmen.
  • 2018 brings us Heroes in Crisis, which features Superman, Batman, and Wonder Woman investigating a horrible massacre at a getaway designed to help heroes with PTSD.
  • 2019:
    • Event Leviathan, a noir-inspired arc featuring Lois Lane seeking the aid of detective-based heroes to investigate the criminal organization of the same name.
    • And that is but part of the massive DC Year of the Villain storyline which began in May and concludes in 2020, during which the DCU is essentially in a permanent state of Crisis Crossover.

    Marvel Comics 
  • Contest of Champions, the first crossover done as a Mini Series.
  • Secret Wars (1984) was essentially twelve issues of good guys and bad guys beating each other up in various and creative ways in order to promote a toy line, still, it was a blast. Sometimes you buy a comic to read good guys fighting bad guys. Relatively little impact on the larger Marvel Universe. A few things did change following it:
  • The sequel, Secret Wars II, was less successful. The Beyonder, the omnipotent being behind Secret Wars, took on human form and wandered around doing stuff, with the heroes making mostly-futile attempts to interfere with him and Mephisto trying to kill him. Generally considered a failure, partially due to its inescapable nature, with nearly every comic Marvel published at the time tying in somehow, and partly because the concept of the Beyonder trying to get used to being a human led to lots of Narm. A good example of what not to do.

    While very little changed in the Marvel Universe following the event, Secret Wars II is notable as a legal footnote to the Transformers franchise as featuring an Early-Bird Cameo of Marvel Transformers antagonist Circuit Breaker. Marvel editor Bob Budiansky gunned for her to debut in this story so that she would become the copyright of Marvel rather than Transformers owner Hasbro, causing the latter's comics partner IDW Publishing no small amount of headaches in reprinting Marvel's Transformers comics in the 2000's.
  • The 1986 storyline Mutant Massacre involved the mass murder of the underground mutant community known as the Morlocks at the hands of the Marauders, a group of mercenaries loyal to Mr. Sinister. This series mainly affected the X-books and their characters (at the time, Uncanny X-Men, X-Factor and New Mutants) but it also crossed over into Daredevil, The Mighty Thor and, of all places, Power Pack. It may well be the first crossover which required readers to get every book involved if they wanted to have the full story, a template which almost every crisis crossover has followed since.
  • Also worth mentioning are Fall of the Mutants, in 1987, which was mostly confined to the X-Books; Evolutionary War, in 1988, which made its way through the Marvel summer annuals and featured the High Evolutionary; 1989's Atlantis Attacks, also running through Marvel's summer annuals for that year to celebrate the Sub-Mariner's 50th anniversary, as heroes fought off an Atlantean invasion; and other X-Book X-Overs like X-Cutioner's Song and X-Tinction Agenda, each of which made significant, if not always lasting, changes to the X-Status-Quo.
  • In 1989 came the Inferno crossover, in which demons from Limbo staged an invasion of New York City. The storyline was mainly an X-Book storyline, as Inferno resolved longstanding plotlines involving Jean Grey's doppleganger Madelyne Pryor, the Madelyne/Cyclops/Jean Grey love triangle, and Illyana Rasputin's Apocalypse Maiden, but the effects of the X-Over was felt in just about every Marvel book published at the time, leading to the introduction of a new Avengers roster, the Thing being restored to human formnote , and the Jason Macendale Hobgoblin becoming half-demon (after getting his ass kicked by Harry Osborn, while dressed as Green Goblin).
  • Late 1989 and Early 1990 brought the Acts of Vengeance. Loki secretly organized a veritable army of supervillains in what was ultimately a poorly written plotline that suffered from a massive case of writer revolt. Most notable for the storylines that ignored the main plot, where Spider-Man temporarily gets used to his new Captain Universe cosmic powers, the Fantastic Four testify before Congress against the proposed Super Power Registration Act, Psylocke becomes an ninja, and Magneto takes down the Red Skull in a Moment of Awesome.
  • During 1991-1993, Marvel ran what has since become known as "The Infinity Trilogy"; three X-Overs written by Jim Starlin, involving Thanos, Adam Warlock, Magus, and the Infinity Gems.
    • The first installment, The Infinity Gauntlet, did the idea of a crossover right; only a few books were part of the crossover and almost all of them were books with a good reason to be part of the crossover, mainly those that dealt with things of a magical or cosmic bent (Doctor Strange, Quasar, etc) that the main mini-series was about to begin with. There were only a few anomalies that didn't quite fit, like the Hulk or Cloak & Dagger. Unfortunately, the sequels The Infinity War and The Infinity Crusade, roped-in practically every single other Marvel title whether it worked or not.
  • 1992 saw the Avengers crossover Operation Galactic Storm, in which the team was drawn into an all-out war between the Kree and Shi'Ar galactic empires. It turns out the whole thing was engineered by the Kree Supreme Intelligence, who manipulated the Shi'Ar into detonating a nega bomb to spur the stalled Kree evolutionary process, at the cost of billions of Kree lives. Led to a split in the Avengers' ranks when an Iron Man-led team killed the Supreme Intelligence in retaliation (though they only destroyed a shell), much to Captain America's dismay.
  • 1993 brought the Marvel world Blood Ties, a sequel to the Fatal Attractions Bat Family Crossover that involved both the Avengers and X-Men teams traveling to Genosha to save Quicksilver's daughter Luna Maximoff from the predations of the mutant extremist Fabian Cortez. This rescue mission was complicated by the arrival of Exodus, the Dragon Ascendant to Magneto since Attractions and a mutant of Superpower Lottery-level power. Heavyweights from both the Avengers and the X-Men clashed with Exodus, and in the climax he fought off the entirety of both teams singlehandedly before being brought down. Due to the Avengers traveling to Genosha without the approval of the UN, this resulted in them being stripped of their charter and their West Coast team being disbanded.
  • The Age of Apocalypse crossover ran through the X-Men books in 1995, halting them for six months to tell the story of an Alternate Universe where Legion accidentally kills Professor X before he could found the X-Men, leading to an apocalyptic world where Apocalypse rules everything and Magneto formed the X-Men instead.
  • The Crossing ran through the Avengers books in 1995 as well. The premise was that Iron Man had been under the mental influence of Kang the Conqueror for years, and had now turned against the Avengers outright; the only way the Avengers could defeat him was to pluck a younger Tony Stark, untouched by Kang, from an alternate timeline, and in the end, "evil" Tony was killed off. This turn of events was not well-received, to say the least.
  • There's also the Onslaught saga in 1996, which was famously hijacked by editorial to set up Avengers and Fantastic Four's continuities being rebooted from scratch outside the Marvel Universe via Heroes Reborn. However, this reboot was short-lived, and the subsequent Heroes Return storyline not only brought everybody back, but undid the damage done by The Crossing. Thank you, Franklin Richards.
  • 2001 brought Maximum Security, in which a whole mess of alien planets get together to keep all the superbeings we keep producing under control; however, instead of completely borrowing DC's plot for Invasion!, they simply designate Earth as a penal colony, drop off the scum of the universe to keep the superheroes busy, and have a ship in orbit keep everyone from leaving. The plot sickens when Ego the Living Planet begins assimilating Earth as his new body. Yet again, it doesn't work out — but the Kree are given a new Voluntary Shapeshifting gimmick... until the next Cosmic Retcon.
  • The later 2000s brought a whole series of crossovers, collectively tearing down and then rebuilding the superhero community:
    • First the Bat Family Crossover Avengers Disassembled, where The Avengers start getting attacked on all sides out of nowhere. It's eventually revealed that the assault came from the Scarlet Witch, whose powers had grown to Reality Warper levels and driven her mad. She's stopped and placed in the care of her family (Magneto and Quicksilver), but the losses are so great that the Avengers disband (though the New Avengers form shortly afterward after a mass supervillain breakout).
    • Not long after came Secret War in winter 2004-2005. Nick Fury begins to see that more and more D-list villains are hitting the streets with bigger and better tech, far more expensive than their petty crime could ever pay for. Fury realizes that the weapons are coming from Latveria, but the United States has experienced a thawing of relations with the Latverians and the President vetoes his request to attack and put a stop to the armaments. Fury doesn't take no for an answer and gathers the heavy hitters of the Marvel Universe before launching a black ops invasion of Latveria, completes his objectives, then wipes the team's memories to preserve plausible deniability. The cat gets out of the bag when the consequences come home to roost in New York. Fury is forced into hiding until the events of Secret Invasion while Maria Hill ascends to Director of SHIELD.
    • 2005 followed up with House of M, in which Quicksilver manipulates Scarlet Witch to create "a perfect world", which gets over-ridden by Magneto's concept of a "perfect world" being one ruled by mutants. After much fighting, Scarlet Witch comes to the decision that mutantkind still would create a world of violence and hate, and she promptly depowers 90% of the mutant community. At a stroke, mutant-kind is reduced from a population of millions with strong political and economic support to less than 200 frightened heroes on the verge of extinction.
    • Civil War, in 2006. The deaths of the New Warriors and the city of Stamford, Connecticut at the hands of Nitro leads to a backlash against all heroes and a political push to get heroes to register their secret identities with the US Government, via the Superhuman Registration Act. Iron Man and Mr. Fantastic decide to back the new law and lead the charge to do so, while Captain America leads the anti-registration side of the super-hero community, as he sees the whole Registration Act as a bad idea. Needless to say, it all ends in horror as Captain America is defeated, denounced as unpatriotic, and assassinated, and Iron Man being handed full-control over SHIELD.
    • This is followed by World War Hulk, the follow-up to the Incredible Hulk storyline Planet Hulk where, days before Civil War happened, Iron Man and Mr. Fantastic shoot Hulk into outer space (because, frankly, the conflict was gonna have enough problems without having to deal with the Hulk). He ends up on a hellish gladiator planet, which soon explodes due to the ship Hulk was sent on blowing up. Needless to say, Hulk is pissed and fans get five issues of Hulk delivering karmic beatdowns towards Iron Man, Mr. Fantastic, and just about anyone else who gets in his way, as well as crossover issues in or with The Avengers, Ghost Rider, Heroes For Hire, Iron Man, Ant-Man, The Punisher, and the X-Men, not to mention a Prologue issue with a story that features the Mini Marvels filling in the background.
    • Secret Invasion, 2008: After the ninja assassin Elektra is killed (again), the Avengers discover that "Elektra" was actually an alien Skrull impostor pretending to be Elektra. Both characters and fans quickly started wondering who else could be a fake, fueled by Word of God explaining that the infiltration went back for years. On top of all the problems from the last few Crisis Crossovers (Captain America dead, the Avengers fractured and preoccupied with fighting each other rather than actual threats, and the X-Men have had their power drastically reduced), throw in the paranoia of double agents and it sure would be trouble if the aliens decided to invade now that every force that could be expected to stand up to them has been crippled... Ultimately, while Earth wins, Iron Man is still blamed for FUBARing the superhuman response, S.H.I.E.L.D. is dissolved, and control of the rest is handed over to the media darling who killed the Skrull queen on live TV; the leader of the Boxed Crook team the Thunderbolts: Norman Osborn. That's right, the Green Goblin is head of the government's superheroes. Yikes.
    • This led to a pseudo-example called Dark Reign, which details Osborn's tenure as the leader of the Darker and Edgier SHIELD called HAMMER, during which time he sets up and leads his own Evil Counterpart to The Avengers (as well as the X-Men and a couple of others), dressing up psychotic supervillains to disguise themselves as the heroes, whilst pursuing an agressive domestic and foreign policy and consolidating his power by allying with major players like Loki, Namor, Emma Frost and Doctor Doom (and the Hood), whilst once again starting to descend back into Goblin-related madness. Word of God is this was not an "event" like the previous examples but it did lead to many mini-crossovers as pretty much every Earth-bound hero found themselves in conflict with the maniac plus it ticks most of the boxes anyway (save that its longer), and its worth mentioning because the conclusion to it was...
    • And finally in 2010, we have Siege. Thor had previously moved Asgard to Earth, and Osborn and Loki aren't happy (Osborn because it's foreign territory on US soil, Loki because Asgard isn't in its own realm where it belongs). So Loki convinces Osborn it would be a wonderful idea to take his army and attack gods. Naturally, Thor and everyone connected with the Avengers goes "Oh No You Didn't!!" and goes to kick his ass. But the real problem wound up being the Sentry: immeasurably powerful, mentally unstable (to put it mildly), and Osborn's no longer holding his leash. In the end, Osborn is ousted and the resurrected Steve Rogers (no longer Captain America) takes his place, beginning "The Heroic Age" by ending Superhuman Registration, formally reuniting the fractured Avengers teams, and bringing the Big Three (himself, Thor, and Iron Man) together on the same side for the first time since before Avengers Disassembled.
  • Alongside that grand arc, Marvel also released Crisis Crossovers for its cosmic properties (i.e. alien races and space-borne heroes who can't be expected to care about the political squabbles on Earth):
    • The first one came in 2006 during the Civil War, titled Annihilation. It featured Annihilus, ruler of the Negative Zone, making a grand and destructive invasion into the regular universe that left a great deal of heroes dead, utterly destroyed the Nova Corps, dealt a harsh blow to the Kree Empire, and utterly shattered the Skrull Empire, going so far as to destroy the Skrull homeworld (which motivated the Skrull race to activate their sleeper cells in the above Secret Invasion to conquer Earth as a new homeworld). Ronan the Accuser was forced to Mercy Kill the Kree Supreme Intelligence to temporarily stave off the collapse of their empire. It took the power of Galactus himself, in an all-consuming rage, to end the threat of Annihilus.
    • Annihilation got a sequel in 2007 titled Annihilation: Conquest, in which Ultron, leading a vast army of robot warriors, takes advantage of the weakened and confused state of the Kree Empire to attempt to conquer it. He doesn't succeed, but he makes a very good try of it and drives the Kree further into isolation and general impotence.
    • While not directly related, this is now being followed in 2009 by War of Kings. Part-way spun out from Secret Invasion, one of the people replaced by a Skrull was Black Bolt, leader of the Inhumans. In response, the Inhumans decide they can't live in hiding any more, so their giant city on the moon blasts off for outer space, and after picking off several leftover Skrulls they conquer the remains of the Kree Empire, who created them in the first place. This sets up a war between the Kree Empire and the Shi'ar Empire, itself now under the heel of the psychopathic X-Men villain Vulcan, with the Nova Corps, the Starjammers and the Guardians of the Galaxy caught in the middle.
    • 2010 finishes with The Thanos Imperative. A superweapon detonated at the end of the war has opened a rift in space known as the Fault. On the other side is a parallel universe that has been taken over by Eldritch Abominations (called the "Cancerverse", after how the monsters spread and corrupt). The heroes will have to join forces with Thanos, who had been granted the death he wished in Annihilation and was resurrected against his will in order to fight a universe where life has won over death.

  • The New 10's brought a regular rotation of Crossovers, often coinciding with promotions for Marvel movies:
    • Starting in 2010 and continuing into 2012, The Children's Crusade brought the Young Avengers, the Avengers, and the X-Men together to hunt down Wanda Maximoff. The Young Avengers sought to return her to the Marvel Universe, the Avengers generally wanted to contain her power, and the X-Men were out for blood after the Mutant Decimation. Wanda was found and all was forgiven after a long The Reason You Suck speech pointing out the hypocrisy of the Avengers and X-Men. Other important events being Victor von Doom revealing he was responsible for Wanda's descent into madness, Iron Lad undergoing his Face–Heel Turn into Kang the Conqueror, Cassie Lang dying at the hands of Victor von Doom and spurring said Heel Turn, and Hulkling proposing to his boyfriend Wiccan.
    • The big crossover of 2011 was Fear Itself. While the world is in a state of underlying fear and paranoia (from events both in-universe and in the real world), the Red Skull (II aka Sin, daughter of the original) frees a Norse god that scares even Odin called the Serpent. The Serpent then summons hammers that turn selected superhumans into his followers "the Worthy", causing the powder keg of fear to explode among the people.
    • 2011 had a smaller example in the form of Spider-Island which saw everyone in New York receive spider powers. While this would normally be a Bat Family Crossover or just a regular storyline in Amazing Spider-Man, a multitude of tie in mini series and one shots focusing on everyone from the Avengers to the Kung Fu heroes as well as tie-in issues running in the monthly titles of both Venom and The Incredible Hercules.
    • 2012 brought Avengers vs. X-Men, where the Phoenix Force is returning to Earth and has chosen Hope Summers as its new avatar, leading the two major Super Teams of the Marvel Universe to clash over whether this will mean the resurgence of mutantkind (for the X-Men) or the destruction of humans and mutants alike (for the Avengers). Epic Conflict Ball ensues. The series ended with Cyclops, Emma Frost, Magik and Colossus becoming fugitives, Professor X dead at Cyclops' hands, and Captain America formed the Avengers Unity Squad to keep something like AVX from ever happening again.
    • Spring of 2013 brought Age of Ultron, resurrecting Ultron after his cosmic hijinks and the end of humanity with it. Interestingly, the storyline already starts off with Ultron succeeding in taking over the Earth, with the surviving heroes attempting to mount a resistance to stop the robotic villain's rule. Then it quickly turns into Timey-Wimey Ball nuttiness with no real impact on the other titles. Any tie-ins in other books were labeled "AU", and had no impact on their respective running storylines. The major impact came at the end of the story, with the debut of Angela, and Galactus being teleported to the Ultimate Marvel universe, setting the stage for Cataclysm: The Ultimates' Last Stand.
    • Meanwhile, Summer in 2013 brought Infinity. Building off a storyline from The Avengers main book, it centers around heroes dealing with two major cosmic threats, one a new cosmic enemy called the Builders and the other Thanos leading a new invasion army, hitting the planet Earth at nearly the same time. Despite the name and use of Thanos, Word of God says that the event is not intended to be a sequel to the similarly named The Infinity Gauntlet and its sequels.
    • 2014 kicked off with Original Sin by Jason Aaron and Mike Deodato Jr. It is a murder mystery about the killing of Uatu the Watcher and the heroes' buried secrets which he has personally witnessed but kept to himself being leaked out to the superhero community. (It's highly reminiscent of DC's Identity Crisis.) The culprit was exiled to the moon, forced to watch the Earth as Utatu once did for their troubles.
    • Fall of 2014 brought AXIS by Rick Remender. Spinning out of the events of Uncanny Avengers, the threat of the Red Skull takes on new heights as his new powers begin to turning the lives of The Avengers, the X-Men and even several noteworthy Marvel villains upside down in his bid for domination. Cassie Lang and Brother Voodoo are returned to the world of the living during this event.
    • In 2015 there was only one headline event: a new Secret Wars by Jonathan Hickman, where the entire Marvel Multiverse was destroyed and a new Battleworld created from their shards. An "All-New" universe took the place of the old one after the series ended. Ultimate Marvel fan favorites like Miles Morales were merged into the primary Marvel Universe while the rest of the Ultimate Universe was completely destroyed.
    • In early 2016, Avengers Standoff was launched and the Marvel heroes discovered a S.H.I.E.L.D. facility that used a living Cosmic Cube named Kobik to rehabilitate super villains. Rehabilitation in this case is a polite way to say "brainwash into living peacefully in a false suburbia prison." The prisoners woke up to go on a Roaring Rampage of Revenge while the heroes tried to contain the damage. The fallout from Standoff left most of the Marvel U with a heavy distaste for S.H.I.E.L.D. and central authority in general, and Steve Rogers is mind-wiped into being a sleeper Hydra Agent.
    • Next in 2016 we had Civil War II in which the superhero community was split in half again, this time over a Precrime Arrest moral debate when an Inhuman named Ulysses begins suffering accurate visions that make Nostradamus look like an amateur, and Inhumans vs. X-Men in which the Inhumans fight the X-Men. Carol Danvers leads the pro-Precrime faction with the Inhumans while Tony Stark leads the anti-Precrime faction. Ultimately, Tony was left in a coma and Riri Williams assumed his mantle as Ironheart, Carol Danvers was able to institute more powers and reforms for herself and S.H.I.E.L.D., a global space shield was erected to protect Earth from cosmic threats, and the Inhuman Ulysses ascends to join the Watchers and remove his prophecy powers from the material world. Which comes in handy for Cap's plans in...
    • Secret Empire by Nick Spencer was 2017's primary Crossover, in which the Steve Rogers Captain America, who has become an agent of Hydra unbeknownst to the rest of the Marvel Universe, has taken over as head of S.H.I.E.L.D. as he begins his putting his bigger plan of taking over the country into motion, forcing the rest of the Marvel Heroes to band together to stop him. Carol Danvers was locked out of the Earth by her own space shield and the Cosmic Heroes (along with anyone who had a shot at kicking Hydra Cap's ass) was forced to fight an endless armada of Chitauri in space until the war's end. Hydra Cap was ultimately stopped and normal-Cap remade from the shards of the Cosmic Cube.
    • A smaller Crisis Crossover took place with Monsters Unleashed, a mini-series that forced the heroes of the world to band together against a seemingly never-ending onslaught of colossal monsters from space known as Leviathons. It also serves as the Origin Story for Kei Kawade, who later takes up the hero name of "Kid Kaiju".
    • 2018 had Infinity Countdown leading to Infinity Wars (2018), where the the Infinity Stones reappeared and Doctor Strange gathered up the Stone holders in preparation against a mysterious being known as Requiem, who seeks the Stones.
    • 2019 debuted War of the Realms, Malekith and his army, having taken nine of the Ten Realms, now comes for the final realm: Earth. Thor must now prepare everyone in defense of Earth and the war to come. After the dust settled, Odin abdicates as King of Asgard in favor of Thor, Jane Foster joins the Valkyries as the Valkyrie, and Loki begins to establish a realm of his own among the Frost Giants.
    • 2020's crossover event was Empyre. Hulkling embraced his dual royal bloodlines and leads a unified Kree-Skrull Empire to war against the Cotati, a plant-like species preparing to launch a genocidal crusade against all "animals" in the galaxy. During the event, Hulkling becomes a true Emperor instead of his initial status as a figurehead, the Kree/Skrull War comes to an end under his rule, the Cotati are exiled to a garden world in an unknown region of space with no power to pursue vengeance, and Abigail Brand falls out with Captain Marvel over her running of Alpha Flight and failure to consult with the team about policy regarding the Cotati at the very beginning of the war. Also, Hulkling and Wiccan finally get married.
  • In the same vein, the Marvel Ultimate Alliance video game has the heroes banding together to stop villains under Dr. Doom and Loki from pulling off an Evil Plan that would allow Doom to steal the power of a god from Odin. The sequel is an adaptation of the Secret War and Civil War, minus the second half of Civil War as the game diverges at the end of the third issue of that storyline for a different, original ending where the heroes must band together to stop one of Mr. Fantastic's pro-reg scientific plans gone out of control from dooming humanity's freedom.
  • Ultimate Marvel had one with Ultimatum, meant to be the last title in the Ultimate Universe before it got relaunched as Ultimate Comics in 2009. The plot involves Magneto plotting revenge on the Ultimates for the murder of the Scarlet Witch, killing absolutely everybody in the process.
    • In 2011, Ultimate Marvel had The Death of Spider-Man where, well, Spider-Man died. It ran through Ultimate Spider-Man and Avengers vs. New Ultimates, but is something of an odd case as thus far the series have only intersected once (Spidey got injured in an Avengers/Ultimates fight) and have since remained separate, but it serves as an explanation as to why Spider-Man has to fight the Sinister Six with no back-up beyond an ill-prepared Iceman and Human Torch. Nonetheless, it prompted a second linewide relaunch.
    • In 2012, Ultimate Marvel had Divided We Fall/United We Stand which involved all three ongoing titles at the time - Ultimate Comics Spider-Man, Ultimates and X-Men - dealing with a fractured United States. It notably culminated with Captain America being voted in as President of the United States.
    • In 2013, the Ultimate line had Cataclysm: The Ultimates' Last Stand, which deals with the aftermath of Age Of Ultron with the Ultimate heroes banding together to fight off Galactus.

    Other Comic Books 
  • Fire From Heaven was a 1996 Image Comics crossover with Backlash, Deathblow, Gen¹³, Sigma, Stormwatch, Wetworks, and Wild CATS. Publishing delays lead to a confusing plot and reading order.
  • Of bizarre note is the JLA/Avengers crossover that happened around 2004ish.
    • Although these cross-company crossovers usually end up either being non-canon or forgotten, this one actually led to some small changes: the universe of the Crime Syndicate of Amerika (an evil JLA) was rebooted as a result of the defeat of Krona (who had, destroyed that entire universe in the prologue). This led to vague (and therefore non-copyright breaking) references to the events of the crossover the next time that the JLA met the CSA. Some people also say that the events of House of M may also have stemmed from the events of JLA/Avengers as well, since the Scarlet Witch started to lose her sense of reality and judgment after tapping into the chaotic (read: evil) chaos magic of the DCU. This is just Fanon, but it's too cool a possibility not to mention.
    • Marvel has officially accepted JLA/Avengers as canon, since references to it are made in the Marvel Universe Handbooks, without actually naming the DC characters, of course.
    • The actual crossover itself was integrated fully (as in, no denying it anymore) into DC continuity with the release of Trinity #7, with the Avengers being referred to as the "Others"; you can even see what seems to be a silhouette of Captain America in one panel (though it's just as believable to think that was The Flash - it's left rather vague). Krona's fate at the end of the crossover also played a part in a few JLA stories after.
  • And as long as we're being complete, there was the Marvel Versus DC / Amalgam Universe story, in which both the Marvel and the DC multiverses face annihilation — and so the two multiverses were forcibly merged for a short time to keep their worlds alive. (Amalgam Dark Claw = DC Batman + Marvel Wolverine; Amalgam Super Soldier = DC Superman + Marvel Captain America; Amalgam Amazon = DC Wonder Woman + Marvel Storm; Amalgam Lobo The Duck = DC Lobo + Marvel Howard the Duck; Amalgam Captain Marvel = DC Captain Marvel + Marvel Captain Mar-Vell; et multiple cetera.)
  • Disney did more than one.
    • The first one is probably La Storia Infinita, a transposition of the basic plot of The Neverending Storynote note . The story opens by an emergency meeting of all the heroes in the Disney universe (and we do mean all: not just from the comics, but also from the movies, including the more obscure ones) to try to solve the threat of the Nothing, a maybe-sentient cosmic force that is absorbing the whole universe and replacing it with blank, featureless nothingness. Mickey Mouse is chosen to look for a solution, and, after getting help from Merlin and Dumbo, finds out that Donald is the real Chosen One. On the way, they fight various Disney Villains led by Maleficent. However, this story differs from traditional Crisis Crossovers in that the hundreds of summoned crossover heroes do very little, since Mickey, Donald, and maybe Dumbo are doing most of the adventuring and the others are just hanging around in the Castle the whole time; it was also a self-contained two-part story arc, rather than spanning several titles.
    • The Legend of the Chaos God is a multi-episode crossover between one and every show of The Disney Afternoon that was part of the Disney Duck and Mice comic universe. That includes DuckTales (1987), Darkwing Duck, TaleSpin, Goof Troop and Chip 'n Dale: Rescue Rangers, who were all battling against the vile sorcerer Solego.
    • The New Year celebration of year 2000 was the setting for the Millenium Orbs saga, featuring a crossover between the Mice and Duck comic universes, all battling against evil wizard Euclidus.note 
  • The Zodiac Stone series does a similar thing, with Ducks and Mice both travelling the world to look for the pieces of the Zodiac Stone, a mythical artifact that can predict the future, and stopping the Phantom Blot (assisted by Pete and the Beagle Boys) from getting it first. The scope of the "crisis" is not actually much higher than usual Disney comic adventures, but it was nevertheless advertised as one.
    • In 2011, Boom! Comics was losing the license to The Disney Afternoon comics, so they went out with a bang. As such, Darkwing Duck and DuckTales are crossed over for the last arc of the respective series, with various villains led by the Phantom Blot (from the Mickey Mouse comics, though the mouse himself doesn't appear) who himself mind-controlled by Magica De Spell.
  • Subversion: New England Comics ran a Crisis on Finite Tick Crossovers, which featured all 3 titles in the Tickverse. The editors explained that having only 3 comics severely limited the number of money-making crossovers they could do.
  • Parodied in Top 10, where a character has an Ultra-Mouse infestation in his mother's apartment. So, he hires the EX-VERMINATOR, who releases Atom Cats to deal with them, but with so many super-powered creatures in such a confined space, it turned into a "Whole Secret Crisis-War Crossover Thing" which eventually rewrote the timeline so the Ultra-Mouse infestation never happened, and nobody even remembers it — except the EX-VERMINATOR, who is thus pissed nobody will pay him.
  • Though Astro City is the only series in its continuity and thus incapable of crossovers, they still managed to play with this one.
    • In "The Nearness of You", a man becomes increasingly obsessed about a woman who keeps appearing in his dreams. It turns out it's because a minor villain caused a Temporal Paradox that threatened the universe and required all of the heroes to stop it — and the woman is his wife who ceased to exist in the repaired timestream. Yes, the Crisis Crossover is relegated to a background reference.
    • Also appears in the ending of the "Confession" arc, which is basically a Crisis Crossover as seen from the sidelines. The event in question is a worldwide alien invasion with dozens of heroes against an army of shape-shifting extraterrestrials, yet there's only a dozen panels devoted to the actual battles themselves.
  • Valiant Comics:
    • The "Unity" Crossover early in its history, in which the 41st century heroes and the 20th century heroes had to join come together to face a woman with the power to destroy all history.
    • They also did a crossover with Image Comics called Deathmate.
  • When Bongos Collide was a crossover of Bongo Comics, which publish comics based on The Simpsons. It included Itchy & Scratchy #3, The Simpsons #5, and Bartman #3. It can be read in Bartman: The Best of the Best collection. Also, there were two series of Simpsons/Futurama crossover comics — which reaffirm the Mutually Fictional nature of the two shows in the other's universe (though the crossovers take place in the Futurama universe, because it'd be easier to use its sci-fi nature to use the Trapped in TV Land and Refugee from TV Land plots to allow the meetings).
  • In 2008, the Star Wars Expanded Universe got in on the act with Vector, which told a single story starting in Knights of the Old Republic, then moving in chronological order through Dark Horse's four Star Wars titles, before ending in a Wham Episode in Legacy. And it was really good, too.
    • Legacy also crossed the prequel era with Tatooine's Sand People and the NJO era.
  • The now-defunct Eclipse Comics got into the act with Total Eclipse, written by Marv Wolfman. The story involved a villain named Zzed[sic], who was born many millenia ago during an event called the Total Eclipse (all the planets and moons of the Solar System aligned with thousands of planets, moons and stars across the galaxy). As a result, he has been cursed with immortality, and seeks only his own death, which he can only achieve by destroying all creation. He has no problem with that at first. Unique in being the only Crisis Crossover to feature appearances by Miracle Man, Airboy, Ms. Tree and Beanish of Tales of the Beanworld.
  • The long awaited War Of The Independents mini-series brings together creator-own characters as diverse as Gumby, The Tick, Scud the Disposable Assassin, Cerebus, Shi, Bone and Hack/Slash. Some of the same characters also appeared previously in the normalman/Megaton Man special, Gen¹³ ABC, and Shi / Cyblade: The Battle for Independents.
  • Image United, a series which brings together not only Image's iconic characters, but also their creators to personally draw them in each appearance.
  • Zenescope has The Dream Eater Saga. A threat so major that even Belinda and The Queen of Hearts are fighting against it.
  • Sonic the Hedgehog/Mega Man: Worlds Collide, a large 12-part crossover flowing through Archie Comics' three video game licenses: Mega Man #24-27note , Sonic the Hedgehog #248-251note , and Sonic Universe #51-54note . The gist is that following the Sonic Genesis arc in the Archie Sonic comics, a Chaos Emerald has landed in the Mega Man universe, leading to a chance meeting between Doctor Wily and Doctor Eggman as they team up to cosmically conquer their universes. The ramifications are that Mega Man hits the Reset Button on his universe, pushing the crossover to at least after an hypothetical Mega Man 10 adaptation in the Mega Man universe, whereas Eggman inadvertently causes a cosmic retconning of Mobius on a scale the Archie Sonic comics have never faced before in its 20-year history, primarily designed in real life terms to jettison the aftermath of the Ken Penders legal case on the Sonic comics' narrative without just unceremoniously killing his characters off-screen or invoking What Happened to the Mouse?.
    • This was later followed up on with Sonic the Hedgehog/Mega Man: Worlds Unite, which followed up on the ramifications of the previous crossover and included Sonic Boom and Mega Man X as well thanks to X's arch-enemy Sigma as the instigator of the events. By the third act, with Sigma in full A God Am I mode thanks to being amped up on planetary energy, the combined heroes begin pulling characters from other worlds to help, crossing over with half a dozen franchises from Sega and Capcom each. In a reversal of the previous event, Sonic came out of the story with no consequences while Mega Man saw Xander Payne get thrown back in time by Sigma's defeat and take The Slow Path to become Mr. X in the present.
  • IDW Publishing had a few.
    • Infestation has IDW's Zombies vs. Robots infecting the publisher's licensed universes of Transformers, Ghostbusters IDW, G.I. Joe and Star Trek. Its most notable impact is having Kup be Put on a Bus on the Transformers corner, not coming back until Dark Cybertron below. Its sequel Infestation 2 had the Elder Gods crossing out instead, and the addition of 30 Days of Night and Teenage Mutant Ninja Turtles (IDW) but has no lasting repercussions on even a single series.
    • The X-Files: Conspiracy had Fox Mulder and Dana Scully aiding the Lone Gunmen in their search to discover the cure for a virus, which lead them to stumble upon Transformers, Ghostbusters, The Crow and TMNT.
    • The Transformers: More Than Meets the Eye and The Transformers: Robots in Disguise crossed over in Dark Cybertron, a multi-part storyline involving Shockwave launching his Evil Plan on Cybertron. The two series are set in the same universe and have intersected and referenced each other multiple times, but this was the first real crossover between the two. The battle against Shockwave notably results in Optimus Prime returning to Autobot leadership after a self-imposed exile that started said two comic series and Megatron becoming an Autobot cast member of More than Meets the Eye. The event also saw the debut of franchise-recurring character Windblade.
    • Revolution marks the inauguration of the Hasbro Comic Universe. The basic gist is that the Transformers, G.I. Joe, ROM and the newly-formed M.A.S.K. have a severe case of Conflict Ball over mistaken intentions while the Micronauts head to Earth in a bid to save Microspace, then they all join forces when they realize that a Villain Team-Up has set them up.
    • This was followed up by First Strike in 2017, where a cabal of Earth-based villains launches a genocidal assault on Cybertron, its leader sick and tired of the extraterrestrials conflicts the Transformer race is bringing to Earth. But one of their numbers has a secret agenda of his own for Cybertron, leading to the IDW debuts of the Visionaries and Unicron.
    • Cartoon Network Super Secret Crisis War, an up coming 6-part Mini-Series that crosses the main characters and villains of the shows Dexter's Laboratory, Samurai Jack, The Powerpuff Girls, Ben 10, and Ed Edd n Eddy. The story also branchs off into 6 One-shots featuring Johnny Bravo, Codename: Kids Next Door, Cow and Chicken, Foster's Home for Imaginary Friends, and The Grim Adventures of Billy and Mandy.
  • Dynamite Entertainment had "Prophecy", starring Vampirella, Red Sonja and, uhh, some additional characters nobody remembers. (Xena wasn't on the payroll. Fans still pout.)
  • Dynamite later did the "Swords of Sorrow" crossover event, which was similarly based around all of their Stripperiffic Action Girl characters allying and/or fighting due to a multiversal threat.
  • Parodied in The Boys: the appearance of an alien battlestation in Earth orbit prompts every hero and villain to team up to take it down. In fact, the whole thing is a fake: they're all going to a tropical island for a few days of entirely undeserved booze, sex, drugs, and generalized hedonism, known as Herogasm.
  • Doctor Who (Titan) has yearly Crisis Crossover events featuring all the Doctors with regular titles, plus cameos by some others. So far, there have been Doctor Who: Four Doctors, Doctor Who: Supremacy of the Cybermen, and Doctor Who: The Lost Dimension. The first two were published as stand-alone miniseries, but the third was published as a traditional superhero-comic crossover event taking over an issue of each of the regular series. (Possibly because the two miniseries had suffered embarassing Schedule Slip.)
  • The Transformers multiverse has a Crisis of sorts, called the Shroud (or Shrouding). Which results in altering the fabric of reality that strengthened the boundaries between universes from that point on. A major result being the splintering of the multiversal singularities into infinite variations of themselves throughout the multiverse.
  • Starting in May 2019, Terry Moore's Five Years is a crossover set in the Terryverse, in which the casts of Strangers in Paradise, Echo, Rachel Rising and Motor Girl deal with the threat of the Phi Bomb, a super-weapon that a group of defense experts are scheduled to complete in five years. The Phi Bomb is designed to destroy all hydrogen atoms in a target area. Once it's tested, according to information that Katchoo, Tambi and Rachel uncovered, the uncontrolled explosion will spread out to destroy all hydrogen. Everywhere in the universe.


    Anime and Manga 
  • The Pretty Cure Magical Girl metaseries have their own Crisis Crossover movie series labeled "Pretty Cure All Stars", featuring heroines from all series released until then.
    • However, after quite a few All Star movies and too many heroes to work with, the franchise's Crisis Crossover movie series may be going in a new direction with its upcoming film, "Pretty Cure Dream Stars;" which feature only two Precure teams teaming up and possibly meeting a member of a new team.
    • Then a canonical crossover happened in Hugtto! Pretty Cure when one of the villains froze time and all the Cures had to stop him.
  • The 2nd part of the Time Bokan OVA in 1993 involves the Dorombo Gang from Yatterman invading a city populated by other Tatsunoko Production characters, and who should show to stop them but the Science Ninja Team Gatchaman, Casshern, Hurricane Polymar, and Tekkaman?
  • Tsubasa -RESERVoir CHRoNiCLE- features characters, Spin-Offspring, Expys, and/or cameos from more or less everything CLAMP has ever written.
  • The Majokko Club Yoningumi A-kūkan kara no Alien X OVA is a crossover between Studio Pierrot's most successful Magical Girl series. Creamy Mami, Magical Emi, Pastel Yumi, and Persia all team up to fight alien forces on the moon.
  • Digimon Xros Wars: The Young Hunters Who Leapt Through Time has one in its final few episodes, which saw the return of all the leaders and various other members of all previous Digimon teams.
  • Yu-Gi-Oh!: Bonds Beyond Time is one between the protagonists of the first three series. It's spawned a fair few fanfiction imitations as well.
  • Invoked in-universe in Re:CREATORS, where in order to empower the Creations against Altair, the government formulates a plan to have their creators make a crossover event film in which the characters join forces to defeat Altair due to the fact that the Creations' power-ups rely on the general public to accept and embrace them.

    Fan Works 

    Film — Live-Action 

  • Eugene Sue's 3rd major novel Mysteries Of A People in its final chapter brings the Hero of his First Rodolph into the story as well as the villain of his second (An Evil Jesuit) to do battle with each other.
  • A Jane Austen version happens in Death Comes to Pemberley. Wickham's situation ends up briefly binding Pride and Prejudice with Persuasion and Emma.
  • Star Trek: Destiny: An epic (and we do mean epic) trilogy of novels of the Star Trek Expanded Universe, bringing together characters from The Next Generation, Titan, Enterprise, Deep Space Nine and Voyager to tell the story of the apocalyptic final war between the Federation and the Borg.
  • The Thursday Next series can be seen as a variant of this in later volumes, with literary characters such as Miss Havisham and the Cheshire Cat playing roles in the salvation of all written literature. It runs closer to a Kingdom Hearts-style crossover than a comic-style crossover, though.
  • The first phase of the Family Chronicles have this. Heroes And Villains, Death In The DEEPS and Darkness Falls are separate rosters of characters, but the other two books in the phase, Blood And Fire and The Blackest Night combine the three separate casts into one fight for the world.
  • The Grand Finale of Warrior Cats, The Last Hope is as close as you can get to a self-contained Crisis Crossover, with loads of screentime for all past and present protagonists, the final battles with all the past villains, and cameos by nearly every ThunderClan cat from the first arc.
  • Kim Newman's superhero deconstruction "Coastal City", about what it would actually be like to live in a typical comicbook universe, mentions that "once a year, there would be a crossover free-for-all, frequently involving something enormously powerful from another galaxy, and all the hypers would destroy the city while saving the universe."
  • The Stormlight Archive is basically this to the rest of The Cosmere setting, with planar champions and heroes from previous stories coming together to find Hoid and deal with a threat to the entire Cosmere. Numerous characters and objects from prior books are Back for the Finale.
  • Michael Moorcock has the "Agak and Gagak" incident, in which no less than four incarnations of the Eternal Champion (Elric, Erekose, Corum and Hawkmoon) are summoned to fight two Eldritch Abominations who threaten the entire Multiverse. It is depicted in two separate novels, from Elric's perspective in The Sailor on the Seas of Fate and Hawkmoon's in The Quest for Tanelorn.

    Live-Action TV 

In General:

  • CSI has been known to cross storylines and characters between its various incarnations, as has the Law & Order series. This most commonly takes place during sweeps.
    • There was in fact a Law & Order massive crossover in the works, involving a terrorist plot to attack NYC and several teams of detectives from different squads all working the case together. The idea got shelved after 9/11.

By Network:

  • During the winter of 1999, in line with its plans to air the Miniseries Storm of the Century, ABC had a raging winter storm strike all four of its soap operas. Fitting, as two were set in upstate Pennsylvania, while the other two (one of which was a Spin-Off of the other) was set in upstate New York.

By Series:

  • American Horror Story: Apocalypse is effectively one of these for the American Horror Story universe, as it combines several characters and story threads from different seasons (but especially Murder House and Coven) to reverse its titular apocalypse.
  • The CW's Arrowverse has been doing these ever since The Flash premiered; it's not uncommon for characters to visit each other, but the ones that air each fall just before the winter break are advertised as big event TV. Originally they were just with the parent show, Arrow, they've gotten bigger each year as more and more shows are added to the franchise. They are in order:
    • The 2014 event, Flash vs. Arrow, where Flash and Arrow face off and visit each other's cities to understand each other better.
    • The 2015 event, Heroes Join Forces was used to promote the third Arrowverse show, Legends of Tomorrow by having Teams Arrow and Flash team-up to help Kendra Saunders and Carter Hall escape the wrath of Vandal Savage, the Big Bad of Legends Season 1.
    • The 2016 event, Invasion!, an adaption of the Invasion! arc of the 1980's expanded the crossover by having play across all four shows: Supergirl, The Flash, Arrow, and Legends of Tomorrow by having Barry Allen unite all the heroes he knows to stop an impending invasion from an alien race called the Dominators.
    • The 2017 event, Crisis on Earth-X is even bigger. Whereas Invasion! was technically only a three part event (with Supergirl being just a tie-in to the main event), this crossover fully plays out over all four episodes, equally juggling the storylines of each show, as well as serving as a lead-in to Freedom Fighters: The Ray. And it actually has lasting repercussions for the Arrowverse's future, as Barry and Iris get married, as do Oliver and Felicity, while Martin Stein is Killed Off for Real.
    • The 2018 event, Elseworlds, dials things back somewhat, "only" being a crossover between The Flash, Arrow, and Supergirl, though in a surprising twist the 1990 Flash ended up making an appearance.note  That said, it is notably a Breather Episode compared to the previous year's crossover and is used to promote the then-upcomingBatwoman. Ultimately, it is just a setup for the following year's event.
    • The 2019-2020 event is Crisis on Infinite Earths, having been foreshadowed steadily since The Flash Season 1 and sporadically throughout the other shows, it featured five episodes that span all recurrent Arrowverse series, including Supergirl, Batwoman, The Flash, Arrow, and Legends of Tomorrow (the last of these actually began its forthcoming season after the Crisis). This was the last time Arrow got to participate, as the show ended in 2020 and its final season focuses on Tonight The Hero Dies in the lead-up to and the aftermath of the Crisis. It is an adaptation of the classic comic of the same name AKA the Trope Namer. In addition to the return of 1990 Flash, it also features a cavalcade of guest and cameo appearances from other DC live-action adaptations from outside of the Arrowverse continuity, including Tim Burton's Batman, Titans, the 1960s Batman series, Smallville, a merger of Superman: The Movie and Superman Returnsnote , Birds of Prey, Lucifer, Black Lightning, Swamp Thing, Doom Patrol and the DC Extended Universe. It also marks the debut of the titular character of Stargirl, ahead of the series' premiere on the DC Universe streaming service (which includes the aforementioned Titans, Doom Patrol and Swamp Thing)note . As with the comic book, this crossover has a huge impact on the franchise, as it ends up merging the Black Lightning Earth with Earth-38 (the universe where Supergirl is set) and Earth-1 (where the other four shows are set) into a single new reality.
  • The Defenders (2017) is the self-contained type. It is an eight episode miniseries that sees Matt Murdock, Jessica Jones, Luke Cage, and Danny Rand team up to fight the Hand, a villainous organization built up in Daredevil season 2 and Iron Fist season 1. The crossover has lasting repercussions for the next phase of the Netflix shows, as Matt's "death" in the climax, and subsequent turning up at a convent, sets up the third season of Daredevil to do a loose adaptation of the renowned Daredevil: Born Again storyline.
  • Doctor Who:
    • Pre-revival, the show would occasionally have multi-Doctor special episodes. They had "The Three Doctors" (First/Second/Third), "The Five Doctors" (First/Second/Third/Fourth/Fifth), and "The Two Doctors" (Second/Sixth).
    • The two-part Series 4 finale, "The Stolen Earth"/"Journey's End", crosses over with spinoffs Torchwood and The Sarah Jane Adventures, and also brings in almost all of the Doctor's companions to appear in the revived series to date. (Although it should be noted that this did not have any on-screen content or long-term consequences in either of the spin-off shows.)
    • "The Day of the Doctor" sees the Tenth, Eleventh, and retroactively introduced War Doctors work together to end the Time War. Eventually, all 13 Doctors (including the 12th, yet to debut Doctor) come together to end the Time War and prevent the destruction of the Time Lords.
    • "Twice Upon a Time" has the Twelfth Doctor team up with his original incarnation, the First Doctor himself.
  • A rather famous "Hurricane Saturday" event that happened on The Golden Girls and its spinoffs Empty Nest and Nurses (Nurses was technically a spinoff of Empty Nest, but go with it.) A hurricane hit during The Golden Girls and Empty Nest and the hospital of Nurses dealt with the aftermath. A similar even happened with a full moon, but that better fit as a Cross Through.
  • Ten years of Kamen Rider's Heisei era (and much later on, the franchise's 38 years up to that point) were celebrated in Kamen Rider Decade, where Decade (obviously the tenth) must travel across the Kamen Rider multiverse to save it from total destruction.
  • The three crossover episodes that NCIS: New Orleans has shared with its parent show—one of which was its Back Door Pilot—had a case beginning in Washington on NCIS before evidence took them to New Orleans.
  • Power Rangers has done something like this a few times (not counting traditional two-season teamups), in what was originally meant to be the Grand Finale and as part of Milestone Celebrations.
    • The first, Countdown to Destruction during the sixth season, featured Dark Specter and the United Alliance of Evil declaring war on the entire universe. While the Space Rangers are the main protagonists, making this a Downplayed Trope, the Aquitar Rangers and Zeo Gold are shown fighting elsewhere.
    • Ten Red Rangers would later unite for a special mission in the tenth season, to stop the Machine Empire's remaining generals from re-activating Zedd's war Zord Serpentera as part of the 10th anniversary celebration.
    • The twenty-first season took the previous Rangers examples Up to Eleven with its Grand Finale The Legendary Battle, where every Ranger team to ever lead a season (including two from other planets, one from the future and one from an Alternate Continuity for some reason) come together to fight an Armada dwarfing the United Alliance of Evil declaring war on Earth. Most of the war is actually off-screen, with the Legendary Rangers fighting and rescuing people elsewhere while the season's own Mega Rangers fight the Emperor and high command; they all come together in time for the final battle against the last remnants of the army. This served as the 20th anniversary celebration, though the post-Channel Hop scheduling of the show delayed it to the 21st year.
  • Space Squad: Space Sheriff Gavan Vs. Tokusou Sentai Dekaranger involves Geki/the new Gavan and the Dekarangers teaming up to fight an alliance between Metal Heroes villains, with Madgallant as the movie's main villain. On top of this, the establishment of a space squad was done in response to another universe being dominated by evil, to prevent such an event from happening again.
  • Super Sentai. In the seasonal crossovers, the series from Bakuryuu Sentai Abaranger to Engine Sentai Go-onger are nominally connected by mentions of the Dino House where one character from series A met a character from series B.
    • Kamen Rider X Super Sentai Superhero Taisen is starting to look like this as well, with Decade's Dai-Shocker being ressurected, with their opposite number being the similarly-structured Dai-Zangyack Fleet led by GokaiRed of the Gokaigers. Both the Super Sentai 199 and the All Riders are at the very middle, wondering just what is going on.
    • The Super Hero Taisen series has become an annual tradition, though the focus has been shifting more and more toward the Rider side of things.

  • This trope is spoofed in MAD's article about The 8 Greatest Comic Books of All Time, with one of them being the fake issue Multiple Issues: Infinite Identity Countdown to Final Crisis Ad Infinitum: The Introducing. This issue follows on from Exigency Climax: Final Crisis Across Multi-Realities: The Finality, with every DC Hero from every universe introducing themselves to each other... before the next crossover event happens.

    Mythology and Religion 

    Professional Wrestling 
  • The Invasion storyline in the WWE was meant to be this, with top WCW talent (the then WWF had bought out WCW) "invading" WWF. However contract issues meant that many of the WCW's top stars weren't involved.
  • Rather than being involved in every aspect of a single company, The Hostile Youth Project was out to invade every North Carolina promotion in 2002.

    Tabletop Games 
  • The Abyssal Plague, a series of Dungeons & Dragons Tie In Novels which started out in the Nentir Vale setting but grew to involve other D&D worlds too, including the Forgotten Realms, Eberron and Dark Sun.
    • The D&D settings Planescape and Spelljammer are made of this trope, explicitly designed to allow travel and storylines across D&D's other universes. While it was implied for years that all D&D games belonged to the same multiverse, these were two official company lines that supported it.
    • The book Die, Vecna, Die had the titular lich escape the Mists, leading the party to fight in Greyhawk, across various planes, and culminating in an attack on Sigil. Canonically, this module is the story reason for the changes from 2nd Ed. to 3rd.
  • The Old World of Darkness had a few thematic ones toward the end of its line, but an official one with the Time of Judgment series of books, officially ending the old settings.
  • Rifts is this to the Palladium systems of games. The setting is of Earth a couple hundred years in the future, after having been transformed into a multidimensional hub, with beings from all over time and space arriving, either by choice or forcibly.
    • More specifically, Palladium ran a series of Sourcebooks called "Minion Wars," detailing a conflict between two different versions of Hell that spilled out across the Megaverse. Sourcebooks were written for several Palladium titles, describing how those specific settings were affected by the war.
  • Reality Storm: When Worlds Collide, a crossover between Silver Age Sentinels and Champions.
  • In Wargames, characters and factions beating the crap of each other is their entire point, but sometimes events in the story get too out of hand and several facions are drawn into the ensuing conflict. These wars are commonly told in special supplements commonly named "Campaign Books". These books usually include the background of the conflict, special rules and scenarios to replicate in the tabletop the battles of the mentioned conflict and the rules of units, soldiers and characters who got involved in said conflict, regardless of faction or allegiance. Sometimes, these camapigns and their resolution gets it's way into the story itself and becomes a part of it, specially in the ficitional wargames.
    • Years ago, Games Workshop hosted events called "World Campaigns" which involved every faction of their main games Warhammer or Warhammer 40,000 and threw them into a war where everyone had someting at stake, with different levels of focus (Usually both Empires being the highest) in the story. These campaigns were to be played by players all around the world and games deciding (usually) the outcome of said wars. Some Campaigns were reinforced by Campagin books like normal campaigns. The most famous are included in their games entries.
      • 40K had campaign suppements way back to 2nd Edition, like Storm of Vengeance, but other, more recent ones are Armageddon and Eye of Terror related to the World campaign of the same name. The most recent ones are The Red Waagh and Shield of Baal series of books and boxed sets wich the firt Series pits the Astra Militarum, and Space Wolves aganist the Orks, and the second the Astra Militarum, Sisters of Battle, Blood Angels and Necrons aganist the Tyranids.
      • Warhammer also had its share of campaigns, usually in the form of "campaign boxes", normally centered in two or three of the factions that included the campaign books and special markers or scenery, all capboard. Some of most famous of these Campaign boxes are Idol of Mork and Tears of Isha. 6th Edition onwards, the campaign box format was dropped in favor of the traditional book, being the most famous campaigns The Shadow over Albion, Storm of Chaos and The Nemesis Crown also World Campaigns (albeit The Nemesis Crown was retconned the istant the campaign ended and Storm of Chaos suffered the same fate in the beggining of 8th Ed., The Shadow over Albion sticked). The most famous (and controversial) of the recent campaigns is the Warhammer: The End Times series of books. The End times tells the story of the final days of the world and the efforts of EVERYONE to stop it or bring it. No one knows for sure if it will stick, but everyone fears that it will. No need to say that it didn't end well.

    Video Games 


    Web Original 

    Western Animation 
  • Dexter's Laboratory: Last But Not Beast had the Dexter, Monkey and Justice Friends segments connected via the giant monster destroying Japan. The Monkey segment even skips its usual opening credits to continue the story.
  • Turtles Forever: It deals with the 2000 Shredder returning from his exile, taking over the 1980s Shredder's Technodrome, and, after learning of the TMNT Multiverse, he plans to go conquer it, until he learns that there are teams of TMNT in each and every reality. He goes after the original Mirage Turtles in order to destroy all the Turtles, and three seats of Turtle Teams set off to stop him.
  • Hanna-Barbera did this with the "Council of Doom" storyline in Space Ghost with Space Ghost eventually meeting Moby Dick, Mighty Mightor, Shazzan, and The Herculoids. Sometimes, the Cartoon Network (and later, Boomerang) would show the whole thing.
    • The later Space Stars series did this at the end of each show with a "Space Stars Finale" which features a team up of characters from two or more of the show's segments (Teen Force, Space Ghost, The Herculoids, and Astro and the Space Mutts).
  • Another Hanna-Barbera example would be Yogi's Ark Lark which by definition featured characters joining together to deal with a crisis. Except the crisis in question wasn't a comic book level event as much as the planet has too much pollution kind.
  • The Phoenix Saga of the X-Men animated series was a borderline example. Although there were no actual team ups, it used appearances of other Marvel Comics characters to emphasise the seriousness of the whole thing. Captain Britain and Doctor Strange were seen reacting to the Phoenix and Spider-Man (albeit only his silhouette and his hand) and War Machine were seen protecting civilians in New York. In the sequel, the Dark Phoenix Saga, Doctor Strange briefly appeared again, along with Thor, a Watcher and Eternity.
  • A made-for-TV animated movie called The Man Who Hated Laughter brought together a big group of newspaper comic strip characters — Blondie, Popeye, Beetle Bailey, Hi and Lois, Snuffy Smith — who are ultimately saved from a comics-hating villain by the combined forces of a group of newspaper adventure strip heroes (Mandrake the Magician, Flash Gordon, Prince Valiant, The Phantom, and Steve Canyon). All the characters are owned by King Features Syndicate.
  • Hurricane Flozell blew her way into all three Seth MacFarlane shows, The Cleveland Show, Family Guy and American Dad! culminating in the final scene of the American Dad episode where Cleveland, Stan, and Peter have a standoff with guns.
  • The feature-length special Rudolph and Frosty's Christmas in July by Rankin Bass, which brought back several characters from all of their holiday specials and many of the voice actors from the previous specials as well. It involves Rudolph, Frosty, and Santa trying to stop an evil wizard named Winterbolt. It also contains a bounty of Continuity Porn, with callbacks to other previous specials such as Santa Claus is Comin' to Town, Rudolph's Shiny New Year, and Frosty's Winter Wonderland (with the notable exception of The Year Without a Santa Claus, leaving the poor Miser Brothers snubbed).
  • Spider-Man: The Animated Series: While the show had many crossovers, the series had two of this nature near the end of it's run. "Secret Wars" which saw Spider-Man drafted to be a leader in a literal battle of good vs evil where he picks the Fantastic Four, Storm, Captain America, Black Cat and Iron Man to help take on the likes of Dr. Doom, Dr. Octopus, The Lizard, Alister Symthe and Red Skull. The final arc of the series, "Spider Wars", saw him teaming with various Spider-Men from different alternate universes (one with eight arms, one with Doc Ock's metal tentacles, one who was a billionaire and built his own tech, one who didn't have any powers, and one who was the Scarlet Spider) to stop Spider-Carnage, a murderous version of Spider-Man who fused with the Carnage symbiote.
  • Teen Titans Go! vs. Teen Titans features the 2013 Teen Titans meeting up with their 2003 counterparts to do battle against both Go!Trigon and a freshly resurrected 2003 Trigon. Multiple incarnations of Teen Titans throughout the multiverse are eventually summoned to do battle with this new threat alongside the two main teams.


How well does it match the trope?

Example of:


Media sources: