Puff Adder

Gordon 'Gordo' Fraley gained a massive, blubbery physique and superhuman abilities tied to his serpentine namesake, eventually joining the Serpent Squad before expanding his criminal career through outfits like the Masters of Evil and Serpent Solutions.

Few villains wear their menace as literally as Puff Adder, the hulking Serpent Society bruiser who slithered onto the scene in Mark Gruenwald and Tom Morgan's Captain America #337 in 1988 — a Copper Age debut that dropped him straight into one of Marvel's most beloved creative runs. As a card-carrying member of the Serpent Society, he's kept dangerous company ever since, sharing pages with Steve Rogers himself, Rock Python, and a rogues' gallery of co-stars across Captain America, Spider-Woman, and The Amazing Spider-Man. With 37 years of appearances and three key issues to his name, Puff Adder is no footnote — he's a durable, collector-recognized piece of Marvel's villainous ecosystem, the kind of deep-cut character that rewards fans who dig past the headlines.