Star Trek's most famous characters are its captains, leaders like Kirk, Picard, Sisko, and Janeway. However, Star Trek's most prolific character isn't a captain—in fact, he isn't even human. Michael Dorn's Worf holds that distinction, having appeared across twelve seasons of television and in four feature films. Worf's conflicted identity (a Klingon raised by humans) makes him one of the franchise's most interesting heroes.