- 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
Starfleet exo-biologist respected for making First Contact with the Yridians. Ransom's ship, the U.S.S. Equinox, was stranded in the Delta Quadrant where he was killed in 2376 by the Interspatial Aliens he exploited.