Among the many supervillains who have challenged and fought Captain America , the snake-themed mercenary group known as the Serpent Society includes some of his most venomous foes. Debuting in 1985's "Captain America" #310, by writer Mark Gruenwald and artist Paul Neary, the Serpent Society was formed by Sidewinder to sell their criminal services to evil organizations such as Hydra, Advanced Idea Mechanics (A.I.M.), and the Maggia.

The Serpent Society has gone through several incarnations, appearing in comic books, video games, animated shows, and even a novel. In 2025, they made their Marvel Cinematic Universe debut in "Captain America: Brave New World, " but this high-profile appearance only came after a long, strange journey to the big screen. Diehard MCU fans may remember that in 2014

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