Guest Stars James Doohan as Lt. Cmdr. Montgomery "Scotty" Scott Nichelle Nichols as Lt. Nyota Uhura George Takei as Lt. Hikaru Sulu Keye Luke as Governor Donald Cory Steve Ihnat as Garth of Izar Yvonne Craig as Marta Co Starring Dick Geary as Andorian Gary Downey as Tellarite