crossover fiction
placement of two or more otherwise discrete fictional characters, settings, or universes into the context of a single story
Flash vs. Arrow
first crossover event between television series The Flash and Arrow
Mario & Sonic
video game series
intercompany crossover
comic that features characters from different companies
Endless Winter
2020 comics crossover
Superman/Batman: Public Enemies
2009 animated film directed by Sam Liu
Invasion!
three-part crossover between Arrow, The Flash, and Legends of Tomorrow
Crisis on Earth-X
four-part crossover between Supergirl, Arrow, The Flash, and Legends of Tomorrow
Infection
2019 TV crossover event
Versailles, Burning with Love
episode of Lupin III Part II
Dimensions in Time
Doctor Who serial
Full Moon Over Miami
1992 television crossover event
Heroes Join Forces
two-part crossover between the series Arrow and The Flash
The Spectrum War
2015 comic book series and fictional crossover from IDW Publishing
Crisis on Infinite Earths
Arrowverse crossover event
Alien vs. Predator
science-fiction horror media franchise
Austin & Jessie & Ally All Star New Year
episode of ''Jessie/Austin & Ally''
Lab Rats vs. Mighty Med
two-part crossover episode