The Void is nothing, the rift of pure emptiness that encompasses and embraces the Prime Material. It is the demesne and corpus of Ashur, who is also emptiness. It is a space of pure entropy, the end of time, and utterly inimical to life.
Many places exist within the Void, and many are populated by demons. A demon is nominally any denizen of the Void, whether native or transformed. Many different kinds of demonic species and varieties exist of varying levels of power and hostility towards mortals and the Prime Material. Void magicians frequently summon and bind demons to various ends with the use of rites that pierce the Silver Veil, the planar barrier that isolates the Prime Material. The nature of those pacts varies, as does the attitude bound demons have towards their binders, though it is rarely positive.
The thirteen Lords of the Void are god-like in strength within their spheres of influence. The names and natures of the Saints of Ashur may change, but there are always thirteen, and Ashur is always the thirteenth.
Agduk the Hunter, Terror of Chaigidon
An'akarta the Infernal Hunger, Flame of Logor
Bahhaoth the Watcher in the Black, Queen of the Sea That Is Not
Barkja the Infernal Sage, Keeper of the Arcanum
Igray'iitu the Verminious, Beast of the Grey Wastes
Isetaton the Maze, Demon Sultan of Selb-Kar
Kil Zu the Rapacious, King of the Courts of Flesh
Khamurn the Avaricious, Magistrate of the Iron Law
Nyogthua the Sorceress, High Priestess of the Arcanum
Tzakmeqiel the Desecratrix, Queen of Pestilence
Vaeshir the Demilich, Grand Vizier of Logor
Xth'jich the Eternal Demon, Imperator of the Legions of Chaigidon
