Infamously known as "The Unstoppable Juggernaut", Cain Marko, step-brother of Charles Xavier who although has inhuman powers, is in fact no mutant. While serving the army in Korea, Marko stumbled upon a temple, where he found a ruby gem that held the power of the entity Cyttorak. There was an inscription on the ruby which read, "Whosoever touches this gem shall be granted the power of the Crimson
Bands of Cyttorak! Henceforth, you who read these words, shall become
... forevermore ... a human juggernaut!". After reading this, Marko gained superhuman strength and became the Juggernaut.