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 Majel Roddenberry Nurse Christine Chapel Guest Star Diana Muldaur Ann Mulhall Guest Star Cindy Lou Nurse Guest Star Roger Holloway Roger Lemli Guest Star Eddie Paskey Leslie Guest Star Gene Roddenberry Executive Producer John T. Dugan Writer Ralph Senesky Director