- 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 magic-wielding Megan from Megas-Tu, Asmodeus is a specialist in the ethics of magic, and serves as the prosecutor of the Enterprise crew in 2269 (stardate: 1254.4). His name means "he who sees all," and he had visited Earth in its past, before departing when his fellows were killed at the Salem Witch Trials of 1691.