What If...? 1989 #13 Direct ed. - back issue - $3.00

Charles Xavier, not Cain Marko, touches the ruby of Cyttorak and becomes the unstoppable Juggernaut. Buried under a ton of rubble in Korea, Xavier struggles for years to free himself, all the while monitoring the plight of mutants on Earth. When he finally emerges, he takes over the world with his army of mutant X-Men and rules with an iron hand. After years of watching the injustices done to humans, Cyclops takes a small band of X-Men and breaks away from Juggernaut. Teaming up with Magneto and Cain, they formulate a plan to stop the Juggernaut for good.What if Professor X Had Become the Juggernaut? - Based on events from X-Men (Marvel, 1963 series) #12