This is starting to sound like a bad comic book plot
This character is non-canon to Spider-Man: The Animated Series.
Do not categorize this page under Spider-Man: TAS Heroes, Spider-Man: TAS Villains, Spider-Man: TAS Characters or Earth-92131 characters.
At one point Hammer Harrison and the Enforcers were hired by Kingpin to kill Spider-Man. Their mission failed and Hammer Harrison and the Enforcers were sent to prison.
In the comics
Willard "Hammer" Harrison was born in Pittsburgh, Pennsylvania. He was a world class boxer, but turned his skills to crime. He created hammer-like gauntlets and used them as weapons. He later joined a group of criminals called the Satan Squad and later the Enforcers which at the time was lead by the Kingpin. Throughout his career Hammer Harrison has come into conflict with Spider-Man.