The X-Men #33

The Juggernaut dominates this June 1967 cover in a way that's genuinely hard to look away from — his massive, helmeted form fills nearly the entire image as a tiny Iceman and Beast struggle in his grip, while the floating faces of Cyclops, Marvel Girl, and Professor X look on in alarm. Cover work by Gil Kane, Werner Roth, John Romita, and Sol Brodsky delivers a striking sense of overwhelming, unstoppable menace that perfectly captures the "fight to the finish" promise blazed across the bottom. As a bonus, the cover teases a "fleeting but fateful" appearance by Dr. Strange inside, making this a particularly lively installment of Roy Thomas's run on Marvel's mutant team.