- 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
Interspecies mating expert and notorious womanizer. This Ktarian scientist used a three-day psychology conference to ask Troi to join him for some empirical research.