- 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
Native to planet 892-IV, Septimus was an elderly gentleman who gave up his comfortable lifestyle to lead a non-violent, religous one as a member of the Children of the Sun movement.