An Intercompany Crossover is a comics event where different characters or teams belonging to different comics companies meet each other, breaking the laws of their own separate continuities.
History
Golden and Silver Ages
Perhaps the first relevant intercompany crossover occured in All-Star Comics #3 (Winter, 1940), where heroes from DC Comics and All-American Publications teamed up to defeat some villains as the Justice Society of America.
After All-American was absorbed by DC, there would be no further intercompany crossovers until the Bronze Age.
Marvel Comics
The first crossover between DC and Marvel characters was the treasury-sized edition of Superman vs The Amazing Spider-Man in 1976. Taking placed in a shared continuity construct, the story found the two initially mistaking each other for bad guys (!), but teaming up to fight Luthor and Doc Ock.
Complete list of DC Marvel Crossovers
Amalgam Comics
Main article: Amalgam Comics
Amalgam Comics was an imprint of DC Comics and Marvel Comics created after the DC Versus Marvel comics series. At the end of that series, the DC Universe and the Marvel Universe are combined. The two form the Amalgam Universe, where major characters from both companies are combined, creating characters such as Super-Soldier (Superman and Captain America) and Dark Claw (Batman and Wolverine).
The imprint ostensibly existed since the thirties. The imprint ended when the DC Universe and Marvel Universe were separated once more.
Other Crossovers
2000 AD
- Batman/Judge Dredd (Volume 1)
- Batman/Judge Dredd: Judgment on Gotham
- Batman/Judge Dredd: The Ultimate Riddle
- Batman/Judge Dredd: Vendetta in Gotham
- Lobo/Judge Dredd: Psycho Bikers vs. the Mutants From Hell #1
Boom! Studios
- Batman '66 Meets Steed and Mrs. Peel (Volume 1)
- Justice League/Power Rangers (Volume 1)
- Lumberjanes/Gotham Academy (Volume 1)
- Planet of the Apes/Green Lantern (Volume 1)
Dynamite Entertainment
- Batman '66 Meets The Green Hornet (Volume 1)
- Batman/The Shadow (Volume 1)
- Django/Zorro (Volume 1)
- Freddy vs. Jason vs. Ash (Volume 1)
- Freddy vs. Jason vs. Ash: The Nightmare Warriors (Volume 1)
- Red Sonja/Claw (Volume 1) (Originally a WildStorm/Dynamite crossover)
- The Shadow/Batman (Volume 1)
- Wonder Woman '77 Meets the Bionic Woman (Volume 1)
Dark Horse Comics
- Batman/Aliens (Volume 1)
- Batman/Aliens (Volume 2)
- Batman/Grendel (Volume 1)
- Batman/Hellboy/Starman (Volume 1)
- Batman/Tarzan: Claws of the Cat-Woman (Volume 1)
- Batman versus Predator (Volume 1)
- Batman versus Predator (Volume 2)
- Batman versus Predator (Volume 3)
- Ghost/Batgirl (Volume 1)
- Green Lantern vs. Aliens (Volume 1)
- Grifter and the Mask (Volume 1) (Originally a WildStorm/Dark Horse crossover)
- JLA Versus Predator
- Joker/Mask (Volume 1)
- Lobo/Mask (Volume 1)
- Superman/Aliens (Volume 1)
- Superman/Aliens (Volume 2)
- Superman/Tarzan: Sons of the Jungle (Volume 1)
- Superman and Batman versus Aliens and Predator (Volume 1)
- Superman vs. Predator (Volume 1)
- Superman vs The Terminator (Volume 1)
- Spyboy/Young Justice (Volume 1)
- WildC.A.T.s/Aliens #1 (Originally a WildStorm/Dark Horse crossover)
- Wonder Woman/Conan (Volume 1)
IDW Publishing
- Batman/Teenage Mutant Ninja Turtles (Volume 1)
- Batman/Teenage Mutant Ninja Turtles II (Volume 1)
- Batman/Teenage Mutant Ninja Turtles III (Volume 1)
- Batman/Teenage Mutant Ninja Turtles Adventures (Volume 1)
- Batman/The Maxx: Arkham Dreams (Volume 1)
- Locke & Key/Sandman: Hell & Gone (Volume 1)
- The Rocketeer/The Spirit: Pulp Friction (Volume 1)
- Star Trek/Legion of Super-Heroes (Volume 1)
- Star Trek/Green Lantern: The Spectrum War (Volume 1)
- Star Trek/Green Lantern: Stranger Worlds (Volume 1)
- X-Files/30 Days of Night (Volume 1) (Originally a WildStorm/IDW crossover)
Image Comics
- Batman/Spawn #1
- Batman/Spawn: War Devil #1
- Spawn/Batman #1
- Spawn/WildC.A.T.s (Volume 1) (Originally an Image/WildStorm crossover)
- Superman & Savage Dragon
Top Cow Productions
- Darkness/Superman (Volume 1)
- Darkness/Batman #1
- JLA/Cyberforce #1
- JLA/Witchblade #1
- Thundercats/Battle of the Planets #1 (Originally an inter-Image WildStorm/Top Cow crossover)
Others
- Archie Meets Batman '66 (Volume 1)
- Azrael/Ash
- Batman/Fortnite: Zero Point (Volume 1)
- Catwoman/Vampirella
- DC/RWBY (Volume 1)
- Harley and Ivy Meet Betty and Veronica (Volume 1)
- Justice League vs. Godzilla vs. Kong #
- Justice League of America/The 99 (Volume 1)
- RWBY/Justice League (Volume 1)
- Tiny Titans/Little Archie and his Pals (Volume 1)
Inter-DC Crossovers
- Tangent: Superman's Reign (Volume 1)
- Worlds Collide (DC/Milestone)
- DC/Wildstorm: Dreamwar (Volume 1)
- Batman/Danger Girl (Volume 1)
- Batman vs. Bigby! A Wolf in Gotham (Volume 1)