- 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
Demmas, the eldest son of the Autarch of Ilari, was next in line to become Autarch in 2373. But the centuries-old consciousness of the deposed tyrant, Tieran, killed the Autarch and staged a coup. Demmas fled the planet and enlisted the aid of the Voyager crew in thwarting Tieran's plans to take over his homeworld.