Scourge
The Scourge were demonic eight-dimensional parasites that preyed on the depression, doubt and despair of their victims. When manifested in "normal" space they resembled large insects.
Origin
The Scourge were said to be a part of Humanity ever since the first mammal became aware of itself and felt guilty for it. Whether this actually created the Scourge of not is uncertain. They lived in another universe/dimension/plane of existence thats geometry was reminiscent of Hell, which was their name for this universe. They were also said to exist within all humans as their despair.
Biology
When physical, the Scourge resembled gigantic black mantis-like insects. They were physically stronger than humans and acquired this form from mutating human bodies into the creatures. Upon invading a host body and taking over, the "shadow" of the Scourge would appear on the hand of the host in the shape of a burned pentagram. This would allow the Scourge to invade the host's mind. The Scourge were also a hive mind, meaning that if one of them was trapped between dimensions, they all were.
Technology
While they seemed capable of awesome powers without technology, the Scourge made use of a time travel experiment to enter N-Space. They also utilised bio-dimensional implants which they used on their humans to stretch them across dimensions and prolong their mutation for centuries.
Powers
The Scourge's voice inspired religious awe in humans, causing them to feel guilt and obey their commands. They had complete control over the human nervous system, allowing them to force humans into autoasphyxiation, pushing past the genetic failsafe against self-destruction. When at full power, they could traverse all of Time and Space instintaniously, and actually bend and warp Time and Space to connect points. In order for the Scourge to invade a universe, they would need a sacrifice and would also need huge amounts of fear and dispair at the moment they materialised.
History
The Scourge believed the multiverse was organized so that humans would be their food. They had always been in contact with the humans(specifically psychics) who felt despair, depression, and fear on the astral plane. They refered to themselves as the manifestation of fear.
- They refered to "their" humans, but this could either refer to the humans they met on the astral plane, or their may infact be humans in Hell.
Finding the right point where they could invade the universe, they discovered the Doctor while he dreamed on the astral plane and he offered them the chance to invade Earth and the cosmos. They met him in 2003 at the Pinehill Crest Hotel and took the building into a frational dimension, halfway between N-Space and Hell. The Scourge Leader met with the Doctor who, on behalf of Gallifrey, welcomed the Scourge and made up Earth's surrender papers for the Scourge to see. Focusing, the Leader, Demi-Leader, and Bridgehead tried to bring the others to invade, but the Doctor, going back and forth, improvising as plans backfired, became one with them when they betrayed him. He helped the Bridgehead and Demi-Leader to de-mutate, but was forced to spread the Leader across the dimensions for millenia. (BFA: The Shadow of the Scourge)
- As the Scourge are said to be within all humans and feed on their fear and dispair, there may be some connection between them and the Mara, or one may be a different manifestation of the other.
