Peacemaker

Peacemaker is Christopher Smith, a superhero and soldier who loves peace so much, he's willing to kill for it. Originally he was a pacifist diplomat who used strictly non-lethal weapons, although over time he developed into a more violent vigilante willing to make sacrifices for the greater good. His mind was warped by his abusive father at a young age, and he often flits between being a hero, a villain, or something in between. The character has been associated with the Suicide Squad, Checkmate, the Shadow Fighters, League Busters and Living Assault Weapons.