Juggernaut, supervillain of the X-Men first appeared in the funny books of X-Men #12 in July of 1965. He was created by Stan Lee and Jack Kirby. Juggernaut a.k.a Cain Marko is the step-brother of Charles Xavier (Professor X), leader of the X-Men. Growing up, his real father who adopted Charles, started to favor Charles over him; which led to Cain bullying Charles. Eventually the two entered the U.S. Army and get stationed in Korea. In Korea Cain finds a hidden temple dedicated to Cyttorak. Upon entering, Marko finds a ruby, and reads the inscription on the stone aloud: "Whosoever touches this gem shall be granted the power of the Crimson Gem of Cyttorak! Henceforth, you who read these words, shall become...forevermore...a human juggernaut!" The stones power channels into Cain and transform him into the menacing Juggernaut.