- 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 clone that is created when a Lyssarrian Desert Larvae is implanted with DNA from another species. The larvae is able to replicate that species' life cycle at a rapidly accelerated rate. According to Phlox, they are a closely guarded secret and only a few people know of their existence. Tucker's clone Sim-Trip was a simbiot.