Pandemonium

The Realm of Pandemonium is where most, if not all, demons originate from, using the Vacu as their servants. The only known portal to the Realm lies beneath the ruins of Uzer. Several famous demons originate from the Realm, such as Thammaron the destroyer of Uzer, Delrith, who has attempted to destroy Varrock, and Agrith-Naar, the demon of the weather.