Dæmon

Dæmons are a race of demonic looking humanoids.

Physical Characteristics
Dæmons are satyr-like humanoids with reddish skin and thick fur. They have sharp fangs, pointed ears, a thick beard and long horns. Their legs are goat-like with cloven hooves. They are around thirty feet tall naturally, but they can change their size with their technology. Dæmons have the ability to discharge electricity as well. (DW: The Daemons) Some of this species also possessed prehensile, forked tailed. (DWM: Voyage to the End of the Universe)

History and culture
The Dæmons were an ancient race from Dæmos (DW: The Daemons) who were powerful 150 million years ago. They were involved in the Millennium War and were one of the first species to strike back against the Mad Mind of Bophemeral stopping it from using a dark-matter cloud in the Rift of Perseus. (PDA: The Quantum Archangel)

The Dæmons had a horned god of evil. Though this may simply seem like a personified god, the Doctor surmises that it was actually inspired by the Beast. (DW: The Satan Pit)

The Dæmons studied he other races, treating the universe as their laboratory. Though not evil, they are an coldly logical, amoral race with no emotions or feelings. (DW: The Daemons) However, they also seemed to organize according to the nuclear family structure. (DWM: Voyage to the End of the Universe'')

By the 20th century all the Dæmons, save Azal, had died. (DW: The Daemons)

Effects on human development
Circa 100,000 years ago, they arrived on Earth, helped the humans overcome the Neanderthals and then tried to lead their evolution and development.

The Dæmons inspired myths of gods and demons and the image of powerful beings with horns, including the Egyptian Khnum, as well as the Devil. (DW: The Daemons)


 * Possibly they gave the Atlanteans the Kronos Crystal], which did indirectly cause the destruction of Atlantis, which seems not to have had any direct Dæmon involvment. (DW: The Time Monster)::

Powers
The Dæmons had abilites technology indistinguishable from magic. They possesed matter-energy conversion technology which allows them to shrink and grow things at will. They useed this to increase both their own size (which can range from microscopically small or to thirty feet tall) and to reduce the size of their ship in order to hide them. They also have the ability to set up heat force fields which can disintegrate anything that moves into it. They can also animate stone statues as with the living gargoyle known as Bok.

A Dæmon could be psychically summoned by a special ritual, three of which were performed by the Master. The ceremony require negative emotions such as fear, which can be provided by frightened humans. The more people that are involved and the more impressive the ritual, the more effective it is. Though these negative emotions can power the Dæmon, it can also means positive emotions can be dangerous. A Dæmon will only appear three times to these rituals. (DW: The Daemons)