Mole Man

Few villains have burrowed as deeply into Marvel's Silver Age mythology as Mole Man, who first surfaced in Fantastic Four Annual #1 in 1963 — a debut crafted by the legendary trio of Stan Lee, Jack Kirby, and Sol Brodsky. Over six decades of continuous publishing, this subterranean schemer has proven remarkably durable, racking up 195 catalog appearances across Fantastic Four, FF, and even Ultimate Spider-Man, with a dozen of those issues earning key-issue status among collectors. He's most at home clashing with Marvel's First Family — Reed Richards, Ben Grimm, Susan Storm Richards, and the Human Torch are his most frequent co-stars — which speaks to how central he is to the mythology of that iconic team. If you're building out a serious Fantastic Four collection, Mole Man is one of those recurring presences you simply can't ignore.