William Shatner Capt. James T. Kirk Actor Leonard Nimoy Mr. Spock Actor DeForest Kelley Dr. Leonard McCoy Actor James Doohan Engineer Montgomery Scott Actor Nichelle Nichols Lt. Uhura Actor George Takei Lt. Sulu Actor Walter Koenig Ensign Pavel Chekov Actor Joanne Linville Romulan Commander Guest Star Majel Roddenberry Nurse Christine Chapel Guest Star Jack Donner Tal Guest Star Richard Compton Technical officer Guest Star Robert Gentile Technician Guest Star Mike Howden Romulan guard Guest Star Gordon Coffey Romulan soldier Guest Star Gene Roddenberry Executive Producer D.C. Fontana Writer John Meredyth Lucas Director