Juggernaut (AKA Cain Marko) is a member of the Brotherhood and the stepbrother of Charles Xavier. He appears as a boss in X-Men Legends and a playable character in X-Men Legends II: Rise of Apocalypse.
X-Men Legends Edit
In the game, Juggernaut is not a member of the Brotherhood and works on his own. He first appears in a flashback mission, breaking into the X-Mansion to kill his stepbrother, Professor Charles Xavier. However, he ends up defeated by the X-Men.
Later, during the game's main storyline, Juggernaut travels to Muir Island in Scotland to both destroy the Astral Gate and kill Forge, having been paid by an unknown wealthy person to do the job. However, he ends up defeated by the X-Men once again. After being defeated, Forge imprisons him in a special cell, where the heroes interrogates him. After Juggernaut reveals what he had to do, he's even more disappointed when the X-Men reveal that the Astral Gate was never even at Muir Island in the first place. After the interrogation, Juggernaut swears to get revenge on the heroes.
X-Men Legends II: Rise of Apocalypse Edit
Juggernaut appears in the sequel as a playable character and has now returned to the Brotherhood.