William "Billy" Russo was a Force Recon Marine who served alongside Frank Castle in Afghanistan, and the duo eventually became close friends. Russo and Castle were both recruited into Cerberus Squad under the leadership of William Rawlins, where they assisted in assassination missions. Upon leaving the Marine Corps, Russo was recruited by Rawlins to contribute to his illegal operations, gaining a financial reward and the ability to create his own company with Anvil. Russo's desire for power led him to betray Castle, allowing Rawlins to assassinate Castle's family. Once Castle returned, Russo was ordered to kill his former friend, as he used Dinah Madani to learn Castle's whereabouts, which had exposed Russo's own involvement in Operation Cerberus. Fearing he would be used as the scapegoat, Russo betrayed Rawlins, allowing Castle to kill him, before Russo had a grisly showdown with Castle, that had led to Russo's handsome face being horrifically scarred. While attempting to repair his broken mind, Russo was able to escape from police custody and then began rebuilding his life, recruiting former soldiers to join him in a criminal gang, while asking for the help of Krista Dumont, his own former therapist, who he became infatuated with. All of Russo's crimes and his disfigurement gained him a nickname of Jigsaw, until he was suddenly reunited with the Punisher, as Jigsaw finally remembered how the Punisher disfigured his face and destroyed his entire life. Jigsaw found himself being tracked down by many of his past friends, as he had attempted to fight back and destroy the Punisher through violence and manipulation. However, after Madani had almost killed Dumont and critically wounded him, Jigsaw met his fate as the Punisher, tipped off by Curtis Hoyle, found Jigsaw, and swiftly executed him as revenge for all Russo's past crimes.