Guest Stars Leigh McCloskey as Jalor Davin Brett Halsey as Cruise Ship Captain Kimberly Beck as Alison Trisha Noble as Sabrina Co Starring Mel Blanc voices Twiki the Robot Felix Silla as Twiki the Robot Patty Maloney as Tina Timothy O'Hagan as Young Man Dorothy Stratten as Miss Cosmos Uncredited Eric Server voices Dr. Theopolis