- 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 with a whip. William Riker encountered Letek on planet Delphi Ardu. Letek commanded a team of Ferengi bandits investigating the planet's draining effect on their power sources. Letek's superior was DaiMon Taar.