Chaos Daemons

Chaos Daemons, or simply Daemons (pronounced DEE-mahns), also known as a "Neverborn" amongst the forces of Chaos, are intelligent and usually malevolent entities of the Warp comprised of purely psychic energy. Daemons are both sentient and self-aware embodiments of Chaos and collectively the greatest servants of the Chaos Gods and of Chaos itself as a universal force.
Daemons are created at the whim of one of the four major Chaos Gods from a fraction of the god's own power within the Immaterium and act as an extension of its will. A Daemon's appearance and intrinsic character reflect the god's own nature. These Daemons may be reabsorbed into the god's psychic signature in the Warp at their whim. The Chaos Gods are not alone in Warpspace. They have created servants from their own essences -- the creatures that mortals have named "Daemons" based on their ancient legends and religious mythologies -- who are not so closely bound to the Warp. Daemons are entities of a somewhat different nature to their masters, and are the most numerous of the creatures to be found in the Empyrean. A Daemon is "born" when a Chaos God expends a portion of its own power to create a separate being. This psychic power binds a collection of senses, thoughts and purposes together, creating a separate but closely related personality and consciousness that can move within the Warp. The Chaos God can reclaim the independence it has given to its Daemon children at any time, thus ensuring their loyalty. It is only though the loss of this power that a Daemon can truly be destroyed, its mind dissolving into the whirls and currents of Warpspace. Some worshippers of Chaos believe that the souls of mortals who most fervently worshipped the Ruinous Powers in life are transformed into Lesser Daemons upon their death and the entry of their soul into their patron god's domain in the Realm of Chaos. For instance, this belief is held especially for the Bloodletters of Khorne, who Khornates believe were once the Blood God's greatest mortal warriors, and the Plaguebearers of Nurgle, who some hold are the souls of those mortals who have been afflicted with Nurgle's Rot.