He is a gangster from a Spider-Man Noir universe who is at war with another Mob. Hammerhead killed his universe's Mary Jane Watson. He attacked Thunderbolt, A-Bombardier and Mr. Fixit (his universe's versions of Thaddeus Ross, A-Bomb and Hulk) when Spider-Man and Kid Arachnid appeared trying to stop their fighting. Hammerhead got a new Tommy gun was powerful enough that it was doing a lot of damage to the city when it was destroyed. A piece of the Siege Perilous fell out and transformed Martin Li into Mister Negative, where he used his new powers to turn Hammerhead into a statue. He would become free at the end and became colourful thanks to Fixit.
Hammerhead is a crime boss in the new series Spider-Man.
Hammerhead's skull is covered in adamantium, which makes it indestructible, and able to crush anything it collides it. He is armed with a wide variety of weapons.
- While Hammerhead is a mainstream Spider-Man villain, the Ultimate Spider-Man version is based on the Spider-Man Noir universe. Noir Hammerhead previously appeared in the video game, Spider-Man: Shattered Dimensions. Hammerhead goes back to being a mainstream Spider-Man villain in Spider-Man.
- This was one of Jon Polito's last roles before his death.