- 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
Lwaxana Troi's aide until some time prior to 2364 when the job was given to Mr. Homn. Lwaxana claimed she was forced to fire Xelo because his thoughts about her were increasingly licentious.