X-Men The Early Years (1994) #12

Cover art by Adam Hughes. The Origin of Professor X, script by Stan Lee, pencils by Jack Kirby (layouts) and Alex Toth, inks by Vince Colletta

Cerebro detects a powerful mutant and Xavier fears that he knows who it is; The X-Men prepare the mansion for an all out assault; As the mysterious villain batters his way through the mansion's defenses, Professor X tells his students his origin story and how his step-brother changed from tormenting bully to an unstoppable Juggernaut. 36 pgs.