A sex alien is a common antagonist in science fiction stories. It is a creature with supernatural sexual powers. A sex alien can often induce a trance-like state of arousal in their victims through touch or kiss. A sex alien can often
change appearance, and sometimes even
gender, to better fit the desires of the intended victim. Similar to the succubus of medieval legend, intercourse with a sex alien
will almost certainly result in death as the sex alien feeds on the sexual energy of its victim. When explaining a sex alien's powers, there is about a
75% chance the word, "pheromones"
will be used. Any sc-fi television series to feature aliens
will inevitably feature a sex alien. The only exception to this rule occurs when a show is cancelled before reaching that point.
The Kindred in the 13th episode of the first season of the X-Files, the Orion slave
girls from Star Trek, and the gaseous
alien from the second episode of Torchwood are all examples of a sex
alien.
