- 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
Betazoid science advisor and sole surviving crew member aboard the U.S.S. Bratain when the Enterprise-D discovered the ship ensnared in a Tyken's rift. Despite Hagen's cataleptic state, Deanna Troi was able to glean vital information from him.