Mara (Doctor Who)

Mara appeared in season 19 of 1982 TV series called Doctor Who. The Mara was/were a gestaltbeing/species that dwelt in the Dark Places of the Inside and sought physical existence by taking over a host in their dream. Because of its unclear nature, the Mara was simultaneously thought of as a "he," "it," and "they."

Because the Mara was a kind of gestalt creature, it simultaneously had many forms and also none, able to manifest within the Dark Places of the Inside, but requiring a host in the real world before it could manifest its true self.

The Mara was a psychevore that fed on raw emotion.

Hosts of the Mara developed a snake mark upon the arm and had reddened eyes and teeth, even glowing red eyes and the ability to share voices between hosts, although in one case the Mara possessed several individuals that developed red, molted skin. The Mara was snake-like in its true form. The marks themselves could become real Mara, developing like a rash until they burst from the skin and infected anyone they touched.

Jack Harkness stated that he thought the Fairies of Earth were "part Mara," explaining that the former could control the elements, i.e. fire, water, and air, claiming they could "drag [the] air right out of our bodies."