One of the X-Men's most powerful enemies (and occasional team member) is Cain Marko, who gained incredible strength and magical armor after he found the mystical Crimson Gem of Cyttorak, turning him into the powerful avatar of an other-dimensional being known as the unstoppable Juggernaut, who first appeared in 1965's X-Men #1.
Juggernaut has appeared with Marvel's mutant team in quite a few of their live-action and animated adaptations, though the character has rarely been explored in much depth beyond his overwhelming strength and familial connection to Professor Xavier, which fans are hoping future takes on the character will develop further.
10 The Super Hero Squad Show (2009)
Cartoon Network's The Super Hero Squad Show reimagined Marvel's heroes and villains into inhabitants of a split megapolis known as Super Hero City and Villainville, with Doctor Doom and his Lethal Legion opposing the Super Hero Squad.
Juggernaut (voiced by Tom Kenny) appeared in a couple of episodes and was shown to be strong enough to stand up to the power of Thor and Hulk, though the kid-friendly nature of the series didn't really allow the Juggernaut to shine.
9 Spider-Man And His Amazing Friends (1981)
Iceman and Firestar starred alongside the friendly neighborhood hero in Spider-Man And His Amazing Friends during the 80s, which told the origins of the titular stars over individual episodes including "A Firestar Is Born" that explored newly created Angelica Jones' Firestar origins with the X-Men.
While Magneto appeared in the flashback portions of the episode, Juggernaut (voiced by Willaim H. Marshall) appeared at the X-Men's reunion in search of his step-brother Professor Xavier, and he appeared in his original pants-less uniform from his debut appearance.
8 Marvel Disk Wars: The Avengers (2014)
There have been a few anime adaptations of Marvel characters over the years, though 2014's Marvel DISK Wars: The Avengers took a different approach as the majority of Marvel's heroes and villains were trapped in identity disks that could be activated by players who were linked to the disks.
Juggernaut (voiced by Shota Yamamoto) was used to take on some of the Avengers as they attempted to discover new disks, though when the Hulk was activated he was able to stop the unstoppable, though Juggernaut's armor would be used in battle later by Loki.
7 Pryde of the X-Men (1989)
The X-Men's first starring role in an animated series came in 1989's TV pilot Pryde of the X-Men, which featured the same roster of the X-Men that would later appear in the successful arcade game, though the animated series was canceled along with Marvel's other animated projects at the time.
Juggernaut (voiced by Ron Gans) was a member of Magneto's "Brotherhood of Mutant Terrorists," despite the character (a non-mutant in the comics) having never worked with the team before in the comics.
6 X-Men: The Last Stand (2006)
Vinnie Jones portrayed the Juggernaut in 2006's X-Men: The Last Stand in the character's first live-action appearance as a new member of Magneto's Brotherhood, though not much is explained beyond a quick rundown aboard a government prison transport that made the character a mutant.
Juggernaut's mystical origins were abandoned along with most of the character's costume, and his familial connection to Xavier was also absent from the portrayal, though they managed to work a popular internet saying into the character's dialogue.
5 Wolverine And The X-Men (2009)
2009 saw a new take on the X-Men as Wolverine gathered a new team together in Wolverine And The X-Men to try and stop a series of events that could lead to a dark future, though with only one season the series wasn't able to fully explore this premise as planned.
Juggernaut (voiced by Fred Tatasciore) only appeared in a couple of episodes working for Magneto and battling the X-Men, which definitely showcased his powerful abilities though failed to further develop the character of Cain Marko.
4 Deadpool 2 (2018)
One of the most powerful versions of the character seen outside of the comics was the Juggernaut that appeared in 2018's Deadpool 2, which was a fully computer-generated character that was voiced by franchise star Ryan Reynolds, who also did some of the facial motion capture work.
While this version's regular crimson wardrobe was replaced with his yellow prison uniform and industrial helmet and collar, he was a force to be reckoned with that even the X-Men's powerhouse Colossus struggled to defeat.
3 Ultimate Spider-Man (2012)
While DisneyXD's Ultimate Spider-Man didn't fully explore the character or touch on his connections to the X-Men over his various appearances, it still featured a fun and powerful version of Juggernaut (voiced by Kevin Michael Richardson) that touched on his unique relationship with the web-head.
Spider-Man and Juggernaut have faced off against each other quite a few times over the years, and while this version of the character featured his classic comic uniform, his powers seemed to be derived from his armor.
2 X-Men: Evolution (2000)
2000's X-Men: Evolution introduced a wildly different take on the X-Men that reimagined the team as high school heroes, which made the various alterations to Juggernaut (voiced by Paul Dobson) seem slight in comparison.
This version of the character is Professor Xavier's half-brother instead of his step-brother and his abilities stem from a dormant mutant gene that was awakened by mysticism, but the rest of the character was fairly faithful to the comics and his relationship with Xavier well-explored.
1 X-Men: The Animated Series (1992)/Fantastic Four (1994)
One of the best adaptations of the character and likely the most recognized by fans of Saturday morning cartoons appeared in X-Men: The Animated Series during the 90s, which featured Juggernaut (voiced by Rick Bennett) as the character sought revenge against his step-brother Xavier.
The character also had a brief cameo in the 1994 Fantastic Four animated series episode "Nightmare in Green," which featured his easily identifiable hand as it emerged from the waters of the New York harbor.