Abaddon

As the nadir and heart of universal evil, Abaddon is the forsaken home of the soul-devouring daemons. Crisscrossed by the memory-erasing River Styx, and divided among the four archdaemon Horsemen of the Apocalypse, Abaddon’s ashen skies reflect the debased, abject misery of its universally shunned and loathed inhabitants. It is strongly evil-aligned.

The infernal realm of Abaddon is perhaps the most openly hostile plane of the Outer Sphere. Cold, cloying black mist covers much of the terrain while the sky provides only the eerie twilight of a perpetual eclipse, barely enough illumination to reveal the surrounding lands in darkened silhouette and the poisoned surface of the River Styx. The memory-devouring river originates in Abaddon and meanders its way across the plane and to realms beyond like a twisted serpent, but it and the other environmental hazards are the least of any traveler’s concerns.
The daemons, Abaddon’s native fiends, embody not the tyranny of devils nor the savage destruction of demons, nor anything in the middle. Instead, they personify the very concept of death and oblivion. Feared across the multiverse as soul-devouring horrors, the daemons are ruled by a quartet of godlike archdaemons known as the Four Horsemen. They view the mortal realms as nothing more than a waiting feast, and themselves as the universe’s chosen tools of a coming apocalypse.

Geography

Points of Interest

Apollyon's Domain

• The Throne of Flies

Charon's Domain

• The Drowning Court

• The Whirlpool

The Oinodaemon's Spire

Szuriel's Domain

• The Cinder Furnace

Trelmarixian's Domain

• The Bile Sluice

• The Broodcomb Field

• The Weeping Tower

Urgathoa’s Realm

Zyphus’s Realm

Type

Dimensional plane