- 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
Amoral agent in a secretive division of Starfleet Intelligence called Section 31 who repeatedly tried to recruit Dr. Julian Bashir into the covert agency. In 2375 Sloan committed suicide rather than give up the cure for the Founders Disease, but Bashir and Miles O'Brien recovered the information anyway.