- 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
Genetically superior blonde-haired young man serving under Khan in 2285. Joachim urged, unsuccessfully, Khan to stop battling James Kirk. Loyal to Khan, Joachim died with his master aboard the U.S.S. Reliant.