- 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
Yridian freighter captain who bought stolen magnesite ore from the Duras sisters. The U.S.S. Enterprise caught Yog in the Ufandi system and used the magnesite in his hold to discover the Duras sisters in a cloaked ship.