Punisher

Punisher, real name Frank Castle, is vigilante who kills criminals. He does this because they killed his whole family at a reunion. Nighlock is the only one who understands him.

Trivia
 * he has many weapons.
 * when his family was killed, and he was thought to be dead, Major Malfunction never stopped searching for him.
 * he reports to no one, and absently refuses to bow to royalty.