- 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
Agent Sloan's cover during the 2375 conference on Romulus. After 15 years with the UFP Department of Cartography, Greer had earned the title of Assistant Director. He also claimed an interest in etymology.