Guest Stars Richard Moll as Yarat Jerry Orbach as Lars Mangros Judy Landers as Joanna Nancy Frangione as Karana Co Starring Mel Blanc voices Twiki the Robot Felix Silla as Twiki the Robot Mitch Reta as Technician Jesse D. Goins as Rambeau Jeff Harlan as Mark Leonard Lightfoot as Cirus Cynthia Leake as Elaine Joseph Taggart as Security Man Paul LeClair as Tarkas