Reprinting the story from The X-Men #41 (1968), this issue continues Marvel’s Bronze Age reprint cycle as the title transitioned toward new material. The X-Men—Cyclops, Marvel Girl, Beast, Angel, and Iceman—face the Sub-Human, a monstrous creation of the villain Tyrannus who seeks vengeance against mankind. Meanwhile, Professor Xavier monitors the team’s coordination and training as internal tensions flare. The story mixes underground action, mutant heroism, and moral conflict as the team struggles against a misunderstood creature bent on destruction.