The Crime-Master was a mob boss who tried taking over all the mobs of New York. Initially partnering up with the Green Goblin, he broke with his partner, safe in the knowledge that they both knew each other secret identities so no one could reveal each other's secret[1]. He tried to kill Spider-Man, but was gunned down on a rooftop across from the Daily Bugle. He died before he could reveal to the police the true identity of the Green Goblin[2].