- 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
Ocampa male whose ancestors elected to live with the Caretaker's mate, Suspiria. Tanis believed his longevity — he was 14 — was owed to Suspiria's nurturing. When she returned home to Exosia, Tanis followed.