In Marvel comics, The Punisher is a vigilante who uses lethal methods to fight crime and seeks revenge against those who killed his family. His real name is Frank Castle, and he was a former Marine who became a skilled marksman and hand-to-hand combatant. After his family was killed by the mob, Castle became the Punisher and dedicated his life to fighting crime by any means necessary. He is often portrayed as a morally ambiguous character, as his extreme methods put him at odds with the traditional superhero code of ethics.