- 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
Douwd energy being masquerading as a human botanist who was the sole survivor of a colony on Delta Rana IV that was attacked by the Husnock. His revenge was to annihilate the entire Husnock race. Following this, he lived in isolation with an image of his human wife, Rishon, who had died in the Husnock raid.