The X-Men #12
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.
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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.
Plot details indexed by the Grand Comics Database (CC BY-SA).