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 Jeff Harlan as Mark Jesse D. Goins as Rambeau Leonard Lightfoot as Cirus Cynthia Leake as Elaine Joseph Taggart as Security Man Paul LeClair as Tarkas