Guest Stars James Doohan as Lt. Cmdr. Montgomery "Scotty" Scott Nichelle Nichols as Lt. Nyota Uhura George Takei as Lt. Hikaru Sulu John Winston as Lt. Kyle Leonard Nimoy as Mirror Spock George Takei as Mirror Sulu Nichelle Nichols as Mirror Uhura William Shatner as Mirror Kirk James Doohan as Mirror Scotty Walter Koenig as Mirror Chekov Vic Perrin as Mirror Tharn Vic Perrin as Tharn Barbara Luna as Mirror Marlena Barbara Luna as Lt. Marlena Moreau John Winston as Mirror Kyle Garth Pillsbury as Wilson Pete Kellett as Farrell
