Juggernaut

Cain Marko was the step-brother of Charles Xavier. He resented Charles for the fact that their parents seemed to love Charles more than him.

Cain gained his powers while on a expedition in Asia when he came across the Crimson Gem of Cyttorak. As the Juggernaut, he attempted to get revenge on his step-brother, Charles Xavier.

He tried to seek out Xavier at his mansion, knocking it down only to discover that Xavier was not present. He therefore turned to robbing banks in order to attract Xavier's attention. He was defeated by the X-Men and their new ally Colossus, before being given a hypnotic suggestion by Jean Grey that made him forget who and where he was.