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 Nancy Kovack Nona Guest Star Michael Witney Tyree Guest Star Ned Romero Krell Guest Star Majel Roddenberry Nurse Christine Chapel Guest Star Gary Pillar Yutan Guest Star Booker Bradshaw Dr. M'Benga Guest Star Arthur Bernard Apella Guest Star Janos Prohaska Mugato Guest Star Paul Baxley Patrol Leader Guest Star Bob Orrison Villager Guest Star Roy N. Sickner Villager Guest Star Gene Roddenberry Executive Producer, Writer Marc Daniels Director