Punisher

Francis "Frank" David Castle Sr. is a violent vigilante and former United States Marine, who joined Cerberus Squad while he was still serving in Afghanistan. Fearing that he was slowly losing his honor under the command of Agent Orange, Castle returned to his family, only to lose them all during a brutal shooting. Castle then became the Punisher, aiming to clean up New York of crime by any means necessary.

While seeking to avenge his own family's deaths, Castle came into conflict with the law many times and basically escaped death. Onetime in a battle against Barracuda, things got out of hand causing the NYPD to arrive at the scene, he did escape in time whilst finishing his mission (which was to kill Barracuda).

Abandoning his identity, Castle attempted to live a quiet life before he was found by Micro who revealed to him that more people had been involved in his family's death, and they were involved in the illegal Operation Cerberus he had performed in Afghanistan. While hunting down all those involved, Castle came back into contact with his former best friend Billy Russo, who he eventually learned was working with William Rawlins to try and assassinate Castle. Having discovered the truth, Castle allowed himself to be captured by Russo and Rawlins, eventually killing Rawlins and, in a brutal showdown, disfigured Russo's face beyond repair. Having at last exposed Rawlins' crimes, Castle was then allowed to gain freedom by the CIA and looked to begin a peaceful life for himself. But Frank couldn't do that, and even he thinks the CIA knows that he can't also..