- 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
Officer who revised Starfleet's first contact protocol. In 2369, Sisko wished that McCoullough was on Deep Space 9 to supervise first contact with the gambling Wadi.