Guest Stars James Doohan as Lt. Cmdr. Montgomery "Scotty" Scott Nichelle Nichols as Lt. Nyota Uhura Jeff Corey as Plasus Co Starring Kirk Raymone as Cloud Guard #1 Charlene Polite as Vanna Garth Pillsbury as Prisoner Louie Elias as Troglyte #1 Diana Ewing as Droxine Jimmy Fields as Cloud Guard #2 Fred Williamson as Anka Harv Selsby as Guard Ed Long as Midro