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 John Abbott Ayelborne Guest Star John Colicos Kor Guest Star Peter Brocco Claymare Guest Star Victor Lundin Lieutenant Guest Star David Hillary Hughes Trefayne Guest Star Walt Davis Klingon soldier Guest Star George Sawaya Second soldier Guest Star Bobby Bass Klingon soldier Guest Star Gary Combs Klingon soldier Guest Star Gene Roddenberry Executive Producer Gene L. Coon Writer John Newland Director