- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Home world of renowned deaf mediator Riva, a member of the ruling family whose gene for hearing is absent. Those so born use a three-member "chorus" in a centuries-old system to translate their verbal and emotional thoughts.