- 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
A member of Chief Engineer Montgomery Scott's engineering staff aboard the U.S.S. Enterprise in 2269. Gabler also doubled as a relief security guard; it was while serving in this capacity that Gabler and a security guard named Bell discovered Captain Kor's plan to destroy the Enterprise while the Klingons were ostensibly cooperating with the Federation starship's crew on stardate 5267.6 in a joint effort to escape from the spaceship graveyard inside the Delta Triangle (2269).