Ali ben Bad

Sheik Ali ben Bad was the thief in the episode “The Thief from Outer Space.” He travelled the cosmos with his slave on a habitable asteroid in search of treasure and his beloved princess, long previously kidnapped. He planned to kill Dr. Smithafter Will, Penny, and Dr. Smith travelled to his asteroid in the Sheik's sedan-chair-like shuttle, but entered into a partnership with Will to work together to search for his princess. He eventually found her by sheer chance, but did a quick bunk when he found her less attractive than when he had last seen her.