After becoming a civilian just as the Vietnam War ended, Castle lost his family to the mafia, a personal tragedy that turned him into The Punisher. Now he hunts down and kills any type of criminal, mostly those which murder innocent people, regardless of their allegiance.
He is very big, strong and highly lethal and proficient in any type of armed and unarmed combat, very skilled in martial arts and the use of any kind of weapon, from melee to firearms to heavy weaponry. He also has an almost superhuman level of pain tolerance.
His chest is usually protected by a heavy armored bullet proof vest. The bright white skull on his shirt serves both to scare his enemies and to lure their fire into the most heavily protected area of his torso.
