Guest Stars James Doohan as Lt. Cmdr. Montgomery "Scotty" Scott Nichelle Nichols as Lt. Nyota Uhura George Takei as Lt. Hikaru Sulu Majel Barrett Roddenberry as Nurse Christine Chapel Vic Perrin voices Nomad Meade Martin as Crewman Makee K. Blaisdell as Lt. Singh Arnold Lessing as Security Guard Barbara Gates as Crewwoman