- 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
Administrator of the Tantalus V penal colony until 2266, when his sanity collapsed after testing an experimental neural nuetralizer. When he recovered, Dr. Van Gelder replaced his deputy and successor, Dr. Tristan Adams, whose exposure to the neural neutralizer was fatal.