Piranha

Lurking in the darker corners of the Marvel Universe since 1977, Piranha made a splash in the Bronze Age thanks to the imagination of Marv Wolfman and Ron Wilson, debuting in the pages of Marvel Two-in-One #28. A rare figure whose catalog footprint spans nearly five decades despite a modest appearance count, this character has kept genuinely wild company — sharing pages with the likes of Jack Russell, Daimon Hellstrom, and the gloriously grotesque Headpool across titles like Marvel Zombies 4 and Defenders. That rogues' gallery of supernatural and horror-tinged co-stars tells you everything about the shadowy, macabre corner of Marvel where Piranha operates. For collectors who love digging into Bronze Age oddities with a taste for the weird and the wonderfully obscure, this one's a genuine hidden gem.