James T. Kirk (voice)

Spock (voice)

Leonard McCoy (voice)

Hikaru Sulu (voice)

Uhura (voice)

Montgomery Scott (voice)

Christine Chapel / Starfleet Computer (voice)

Lemus / Aquan Harvester (voice) (uncredited)

Demos / Dramian Guard (voice) (uncredited)

Romulan Crewman (voice) (uncredited)

Security Ensign (voice) (uncredited)

EM / 3 / Green (voice) (uncredited)

Orion lieutenant / Orion ensign (voice) (uncredited)

Romulan Commander (voice) (uncredited)

Cyrano Jones (voice) (uncredited)

Harcourt Fenton Mudd (voice) (uncredited)

Vendorian / Carter Winston (voice) (uncredited)

Asmodeus (voice) (uncredited)

Sarek (voice) (uncredited)

Young Spock (voice) (uncredited)

Young Sepek (voice) (uncredited)

Lara / Vedala Female (voice) (uncredited)