The Juggernaut is a Marvel Comics character associated with the X-Men franchise. Created by writer Stan Lee and artist/co-writer Jack Kirby, he first appeared X-Men #12 (July 1965).
Born Cain Marko, he is X-Men founder Charles Xavier’s step-brother and childhood bully. Unlike Xavier, Marko is not a mutant. With the Crimson Gem of Cyttorak Marko was granted power rivaling The Hulk and The Mighty Thor, and embarked on a lengthy criminal career as The Juggernaut, often tangling with his step-brother’s team, the X-Men.
In 2000s issues of X-Men comic books, Juggernaut underwent a crisis of conscience and joined the X-Men; he is currently a member of the European offshoot New Excalibur.
A popular character, Juggernaut has fought the X-Men in several animated series and games. Vinnie Jones played the character in the 2006 film X-Men: The Last Stand in which he is a member of Magneto’s Brotherhood of Mutants.