As a young boy, Joseph and his family fled the Soviet Union with the help of a man known as The General.
Growing up, his father would berate him for speaking Italian in their Russian household, and would beat the boy with a hammer when punishing him. In school he would lie and say he was Italian, only for a bully named Rico to reveal his lie and steal the hat he wore showing the ugly scars on his head from frequent hammer blows.
Rico and his girlfriend would be the kills Hammerhead needed to join the mob. Hammerhead convinced the mob that he was Italian, which was necessary since they did not take 'inferior stock'. He eventually killed his father with a much bigger hammer than his father had ever used on him.
Note: Currently this criminal/hit-man/Crime Lord's last name is unknown.
Credit: marvel.fandom.com
Key Issues & Appearances
2
Significant comic book appearances featuring Hammerhead