Killer Croc

Killer Croc is a monstrous Gotham City supervillain who suffers from a rare genetic condition giving him reptilian skin, superhuman strength, and savage ferocity, making him one of Batman's most physically formidable and dangerous foes.

Few villains lurk in Batman's rogues' gallery with quite the menacing presence of Killer Croc, who made his catalog debut in Batman #9 (2004) under the creative hands of Jeph Loeb, Ed Tourriol du studio Makma, and Jim Lee — a Modern Age introduction published through Semic S.A. that placed him squarely in the shadows of Gotham alongside the Dark Knight himself, Bruce Wayne, Barbara Gordon, and Robin. Across a publishing span stretching over two decades through 2026, this fearsome figure has haunted titles like Batman - City of Madness and Batman - Cher Detective, proving his staying power in the darker corners of the Batman universe. With 14 catalog appearances and the kind of company he keeps — the very heart of the Bat-family — Killer Croc is unmistakably one of Gotham's most compelling and enduring threats, well worth tracking down for any serious collector of the era.