Demon Lords

Demon lords, were archfiends that gained great power and established dominance over portions of the Abyss and among the demonkind.

Hierarchy
Each of the demon lords controls a portion of the Abyss but none controls all of it. All of the demon lords are locked in an eternal struggle, edging and fighting for dominion over one another.

Lords & Their Domains

 * Baphomet - The Lord of Beasts and the lord of the Endless Maze layers of the Abyss.
 * Demogorgon - The self-proclaimed "King of All Demons" and the lord of the Gaping Maw layers of the Abyss.
 * Fraz-Urb'Iuu - The Lord of Deceptions and Illusions and claims The Hollow's Heart as his layers. Though his reach extends much farther.
 * Graz'zt - The Dark Lord and the self-proclaimed most powerful of the Demon Lords. He governs the Azzagrat layers.
 * Juiblex - The Faceless King and Lord of all oozes and shapeless things. He shares the Slime Pit layers with the Demon Lord Zuggtmoy.
 * Orcus - The Blood Lord and Prince of Undeath. He commands the layers of Thanatos.
 * Yeenoghu - Lord of Butchery and King of all Gnolls (Though this is contested since he was bested by a mortal). He oversees the Death Dells layers.
 * Zuggtmoy - Queen of Fungi and Lord of Rot and Decay. While sharing the Slime Pits with Juiblex, she oversees the Shedaklah region of the layers.

Minor Demon Lords
There are other demons that claim other layers but their power is far overpowered by the true Demon Lords that they can only make claims.