- 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
Banean scientist who was murdered in a plot hatched by Numiri operatives. The murder plot also involved his wife, Lidell, with Tom Paris of the U.S.S. Voyager was the unwitting fall guy. Tolen was murdered by a Numiri spy who posed as a Banean doctor in an effort to gain valuable weapons information.