|Powers and Abilities||Steel-Plated Skull|
|Family and Friends||Silver Sable|
The man known only as Hammerhead is a criminal famous for his steel-plated skull. He worked for Tombstone before moving out on his own.
Hammerhead used to work for Silvermane and had a romantic relationship with the crime lord's daughter, Silver Sable. Then he went to work for the "Big Man," better known as Tombstone. Under orders from his employer, organizes the Enforcers to take out Spider-Man since the wallcrawler was interfering with Tombstone's criminal operations. ("Survival of the Fittest")
After the Enforcers failed to complete their task, Hammerhead instructed Montana to steal the Tri-Corp shipment of vibro-shock units and protective suit so that Montana could become Shocker, and finish the job of eradicating Spider-Man. ("Market Forces")
Hammerhead was captured by Green Goblin, who attempts to convince him to join his side against Tombstone and the mobster adamantly refuses. Green Goblin then traps Hammerhead in a steel mill, suspended over a vat of molten metal, in the hopes that Spider-Man and Tombstone would team up to rescue him, so as to lure them out and kill them.
Hammerhead initiated a summit between Tombstone, Doctor Octopus, and the recently-released Silvermane, in the hopes that they would take each other out leaving him to take control of New York's criminal empire as the new Big Man. When tensions ran high with the each of them beginning to accuse each other of having called the meeting, he knocked Silvermane's attendee unconscious. He then proceeded to throw an automated-assault rifle towards Tombstone, proclaiming that it was his plan to call the summit in order to take out the competition.
His real name is Joseph, last name unknown.