- 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
Scientist on Omicron Theta who did experiments with gamma scans before he was killed in 2336 during an attack on the planet by the Crystalline Entity. Dr. Clendenning's journals and logs — and his memories — were programmed into the android Data by Dr. Noonien Soong, along with those of his fellow colonists. Thirty-two years later, his knowledge helped Data realize that gamma scans would reveal an antiproton trail left by the Crystalline Entity, enabling the Enterprise-D to locate it.