- 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
Astrophysicist from the planet Nezu, in the Delta Quadrant, Dr. Vatm discovered that the asteroids bombarding his world were artificial constructions dispatched by the Etanian Order. He accumulated information about their technology, discovering the asteroids were intended to soften up the Nezu for invasion, and that one of his fellow colonists, Sklar, was an Etanian collaborator. In 2373, Vatm was poisoned by Sklar to prevent him making his findings public .