The mutant son of Charles Xavier, Legion, travelled back in time to kill Magneto whom had always been a thorn in his father's side. But instead of killing Wanda's father, he accidentally killed his own. The world was plunged into a reality without Professor X. Taking advantage of his absence was Apocalypse. The world soon became a war zone between humans and mutants. Only the X-Men, led by Magneto, stood against his wrath. Unfortunately, one of Magneto's first X-Men died during an early battle. The Scarlet Witch fell to the man who would become Holocaust.