Kadro (18)
William ShatnerJames T. Kirk (voice)
Leonard NimoySpock (voice)
DeForest KelleyLeonard McCoy (voice)
George TakeiHikaru Sulu (voice)
Nichelle NicholsUhura (voice)
James DoohanMontgomery Scott (voice)
Majel BarrettChristine Chapel / Starfleet Computer (voice)
Stanley AdamsCyrano Jones (voice) (uncredited)
Roger C. CarmelHarcourt Fenton Mudd (voice) (uncredited)
Ted KnightVendorian / Carter Winston (voice) (uncredited)
Ed BishopAsmodeus (voice) (uncredited)
Mark LenardSarek (voice) (uncredited)
David GerroldEM / 3 / Green (voice) (uncredited)Billy SimpsonYoung Spock (voice) (uncredited)
Lou ScheimerLemus / Aquan Harvester (voice) (uncredited)Keith SutherlandYoung Sepek (voice) (uncredited)
Norm PrescottOrion lieutenant / Orion ensign (voice) (uncredited)Jane WebbLara / Vedala Female (voice) (uncredited)