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 Keye Luke Cory Guest Star Steve Ihnat Garth Guest Star Yvonne Craig Marta Guest Star Dick Geary Andorian Guest Star Gary Downey Tellarite Guest Star Bill Blackburn Hadley Guest Star Frank da Vinci Brent Guest Star Roger Holloway Roger Lemli Guest Star Gene Roddenberry Executive Producer Lee Erwin Writer Herb Wallerstein Director