- 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
An Ilari-nation doctor, Adin was the personal physician to the tyrant Tieran when Tieran took over Kes' body after his death in 2373. Adin tried to convince Tieran to relinquish control over Kes, but Tieran disagreed and killed Adin.