- 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
Time-travelling imposter who visited the 24th century posing as an historical observer from the 26th century. In reality, Rasmussen was from the 22nd century and had stolen a time-travel pod hoping to steal future technologies for his own ends. The crew of the U.S.S. Enterprise apprehended Rasmussen in 2368 as he was attempting to leave their ship with stolen equipment.