Hammerhead

Joseph A.K.A. Hammerhead (voiced by Nicky Blair in 1994's "Spider-Man: The Animated Series", John MiMaggio in "The Spectacular Spider-Man", Jon Polito in "Ultimate Spider-Man", and Jim Cummings in 2017's "Marvel's Spider-Man) is a gangster who worked for Silvermane and later Kingpin. He has a metal plate made out adamantium implanted in his head that allows him to attack his enemies by ramming into them with his head.