| This minifigure has only appeared in video game(s)|
Although this article is about an official minifigure, it never existed in physical form, or appeared in any official LEGO sets.
Hammerhead was originally a boy named Joseph who grew up in Russia but was forced to flee along with the rest of his family due to persecution and the family relocated to Italy. In Italy, Joseph became a member of the international criminal-syndicate "The Maggia" where he served as an enforcer for the mobster known as "Top Man". This lead Joseph to getting in a fight which shattered his skull but which was cured after Top-Man had his skull reinforced with steel as a reward.
With his new skull, Joseph became known as "Hammerhead" and he came to move to New York City where he took-over Top-Man's Maggia-Faction after the gangster's arrest. Hammerhead is obsessed with classical gangsters and dresses in prohibition-clothing, opting to use weapons like tommy-guns as weapons rather than modern machines. Hammerhead can also use his steel skull as a weapon by head-butting his enemies with the top of his head being strong enough to deflect superhuman punches and break through walls.