- 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
Trill composer, brother to Joran Belar. In 2371, Yolad was questioned by Deep Space 9 personnel about his memories regarding the death of his brother. The investigation revealed that the murderous Joran hosted the Dax symbiont for six months, a fact covered up by the Trill Symbiosis Commission.