Davannan

The Davannans are a humanoid species with white pupil-less eyes and a culture which seems to reject emotions. They also have telepathic capabilities to some extent and, by staring at humans with their blank eyes are capable of anything from hypnotic suggestion to killing by destructing the optic and nervous tissues of the victim.

For nourishment they consume a type of black liquid containing all necessary vitamins and other nutrients. The Devannans have a weakness concerning their extremely sensitive hearing, with loud noises having a painful effect on them.

As of the 20th century, this species had suffered a devastating nuclear war and was dying out from an epidemic disease which causes their blood to "evaporate". A Davannan agent was sent to Earth to study the effects of Human blood in their own biology, but after the alien died in a car accident, the planned invasion might have been called off.

Appearances

 * Not of this Earth (1957)

Trivia

 * They are never referred to as "Davannans", the name is instead inferred from their homeworld which is named Davanna.
 * The nature of the small, hovering alien creature which kills a man in the movie is left unexplained, but may represent a non-sapient species from Davanna's native fauna.