| This is starting to sound like a bad comic book plot|
This character is non-canon to Spider-Man: The Animated Series.
Hammer Harrison was a member of the Enforcers.
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.