- 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
Ferengi, nephew of Grand Nagus Zek. In 2371 Belongo was taken into custody by Starfleet authorities on Aldebaran III for what was described as a "slight misunderstanding." Quark, on behalf of the grand nagus, asked Commander Sisko to help clear up that "misunderstanding" with Starfleet while he was visiting Earth to speak at a symposium. Sisko said he would see what he could do, since he owed the nagus a favor, but couldn't promise results.