Juggernaut's Most Crushing Blow Was Breaking His Friend's Heart

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To most readers, Juggernaut is more likely to strike someone in the face than in their feelings. However, the opposite was the case during his oft-forgotten redemption arc with the X-Men. One of the X-Mansion's most formidable villains suddenly became among its most trustworthy allies in Chuck Austen and Philip Tan's Uncanny X-Men #425. His redemption arc came at a time when upon being discarded by his deity, Cyttorak (who also took a portion of Juggernaut's powers), Cain Marko felt more vulnerable and directionless than he ever had before. So, naturally, he sought guidance from his younger brother, Professor Charles Xavier, who welcomed Juggernaut with open arms.

Those at the Xavier Institute warmed up to Juggernaut quite nicely, particularly 10-year old Samuel Paré, a.k.a. Squid-Boy. The two quickly became best friends, with Cain going as far as to be something of a protective father figure to the boy while the latter did his part in calming the giant's more volatile attributes that readers typically associate with his more villainous days. Things took a turn when the X-Men sent Juggernaut to infiltrate a revamped version of The Brotherhood of Mutants, led by Cain's former friend Black Tom Cassidy. He re-joined the Brotherhood, but as an undercover spy working on behalf of the X-Men.

Related: Juggernaut's Secret Origin Is Redefined By Black Knight's Darkest Moment

Unfortunately, Squid-Boy hadn't got the memo, so when he discovered that Juggernaut had seemingly gone rogue from the X-Men, he was heartbroken. So heartbroken that the boy not only verbally berated his best friend but picked a fight with the Brotherhood in Austen and Salvador Larroca's X-Men #162. Unsurprisingly, Black Tom Cassidy killed Squid-Boy with ease.