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 Robert Lansing Gary Seven Guest Star Teri Garr Roberta Lincoln Guest Star Don Keefer Cromwell Guest Star Lincoln Demyan Sergeant Guest Star Morgan Jones Col. Nesvig Guest Star Bruce Mars First policeman Guest Star Ted Gehring Second policeman Guest Star Paul Baxley Security chief Guest Star Eddie Paskey Leslie Guest Star Gene Roddenberry Executive Producer Art Wallace Writer Marc Daniels Director