Whitman becomes the Black Knight, using the horse Aragorn for his mount. He uses the genetic techniques of his uncle to give the horse wings. During his first outing, he is mistaken for his uncle and attacked by the Avengers though they eventually realize their mistake. He later infiltrates the Masters of Evil, proving his worth to the Avengers who offer him provisional membership. Shortly afterwards he inherits Castle Garrett and travels to England. He encounters the spirit of Sir Percy of Scandia there and is given the Ebony Blade. He then encounters Doctor Strange and helps fight the extra-dimensional threat Tiboro.