Howlett's past is mostly unknown, but during World War II he participated in military airdrops with Captain America. Decades later, he was abducted and experimented upon by a covert government unit, who bonded unbreakable adamantium to his skeleton and implanted three claws in each arm. Initially designated Weapon X (later the name of the entire unit), Howlett was renamed both "Logan" and "Wolverine." Weapon X held him for at least a decade. Supposedly programmed to kill any human he saw, he proved his humanity was intact by saving Nick Fury's life in the Middle East. He grew to hate his captors and also his fellow prisoner, Sabretooth. "You ain't done makin' mistakes, bub, not be a long shot." "Like Ben Franklin said, bub... only two things certain in life... an' this ain't taxes." "Ninety percent of accidents happen at home, bub"