Juggernaut

Juggernaut, also known as Cain Marko, is Charles Xavier's half-brother and most feared enemy. Unlike in the comics, he used mysticism to awaken his dormant X-gene giving him the mutant ability to be virtually invulnerable. Due to his destructive nature, Xavier was responsible for Juggernaut's incarceration in a maximum security prison which causes Cain to utterly despise his half-brother. Although Mystique has tried to form an alliance with Juggernaut, he will not remain loyal to anyone and will only follow his own agenda.

Powers

 * Invulnerability - Juggernaut's mutation grants him invulnerability as well as massive superhuman strength and endurance. His strength and invulnerability make him physically unstoppable as seen when he derailed a moving train simply by pushing it with one hand or when he walked through the defenses of the Xavier Institute and an activated Danger Room in seconds, destroying everything in his path with no harm to himself.
 * Superhuman Durability - Cain is virtually invulnerable to all forms of physical injury. Although Cain is able to be harmed by high levels of mental attack, mystical attacks or weapons with mystical properties.
 * Superhuman Strength - The Juggernaut is sometimes listed to possess virtually limitless superhuman strength.
 * Supernaturally Dense Tissue - The Juggernaut's skin, muscle, and bone, is exactly 4 times denser than the same tissue in the body of a human being, greatly contributing to his superhuman weight.
 * Irresistible Force Embodiment - Once he begins to advance in a certain direction, it is virtually impossible to halt his movement. Some obstacles such as many tons of rocks and plasma-discharge cannons have slowed his pace but can't completely halt him.