- 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
A humanoid male, Trevean is a native to the Teplan system. Trevean's clinic provided quick-acting poison, so those in the final stages of the Teplan Blight could die in pain-free dignity.