Billy Russo was an assassin for the Costa family of the Maggia until a run-in with the Punisher left his face horribly scarred. Taking the name Jigsaw, Russo started his own gang dedicated to taking down the Punisher. Since that time, Jigsaw has faced the Punisher several times, but has always been defeated. Strangely, the Punisher has not killed Jigsaw as he has done to the other criminals he has faced, always leaving him to be arrested. The reasons for this are unknown.
Jigsaw is an experienced streetfighter, specializing in the use of various knives and firearms. He frequently employs small armies of criminals, and formerly wore a strength-enhancing exo-skeleton.