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 Anthony Caruso Bela Okmyx Guest Star Vic Tayback Jojo Krako Guest Star Lee Delano Kalo Guest Star Steven Marlo Zabo Guest Star John Harmon Tepo Guest Star Sheldon Collins Tough kid Guest Star Dyanne Thorne First girl Guest Star Sharyn Hillyer Second girl Guest Star Buddy Garion Hood Guest Star Bill Blackburn Hadley Guest Star Jay D. Jones Mirt Guest Star Marlys Burdette Krako's gun moll Guest Star Gene Roddenberry Executive Producer David P Harmon Writer Gene L. Coon Writer James Komack Director