- 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
Leader of the Yangs on planet Omega IV whom a landing party from the U.S.S. Enterprise encountered in 2268. Cloud William was known among his people variously as the Guardian of the Holies, the Son of Chiefs and the Speaker of Holy Words.