Maggia is a fictional international crime syndicate appearing in American comic books published by Marvel Comics. The organization exists in Marvel's main shared universe, known as Earth-616, as well as other Marvel universes. Its structure is somewhat similar to the real-world New York Mafia, but the Maggia differs in that it frequently hires supervillains and mad scientists to work for them. Some of the prominent Maggia members are supervillains themselves, such as Hammerhead, Silvermane, Count Nefaria and his daughter Madame Masque. The Maggia has come into conflict with various superheroes, including Spider-Man, Daredevil, the Fantastic Four, the X-Men, and the Avengers.

Silvermane is a supervillain appearing in American comic books published by Marvel Comics. A notorious crime boss and prominent figure in the Maggia, a fictional organized crime syndicate, he is usually depicted as an adversary of the superhero Spider-Man and the father of Joseph Manfredi. Silvermane later became a cyborg in an attempt to extend his lifespan.