Hailing from a single Star Trek (The Original Series) episode titled "Arena," the Gorn is an alien race of lizard-men that do battle with Kirk in the California desert. It's clear now that this is the moment that launched William Shatner's travel-site-spokesmen career.
Roles reprised by stars from the movie; A few decent one-liners
Why can't I fly the ship or command the crew; Broken AI partners; Throwaway enemies for a throwaway plot