Hades (/ˈheɪdiːz/ hAY-deez)

I don't know, I don't care, and I don't care if you don't like it.

— resident of the wastes

The lower plane embodying Neutral Evil, and the home of the Daemons (Yugoloths). The three layers of Hades were called glooms for good reason; they were realms devoid of emotion, hope, and peace. Gray land and gray sky throughout, with no sun, moon, or seasons to break the monotony. Any color other than shades of gray would be obvious against the background but would fade to gray in a week or two. And like bright colors, beings would begin to fade also. At first, they would feel the drain of emotions leaving only sadness, ennui, and defeatism. In a week or two they would be trapped in Hades and their existence would begin to fade until finally, they become larvae.
Hades was a unique plane because it held the foundation of Mount Olympus and the roots of Yggdrasil, the World Ash. The plane is located between Gehenna and Carceri.

Layers

Oinos - Battle Plain

The first layer of Hades was named for the lord of the daemons (Yugoloths). Oinos was the land of disease with stunted and withered plants amid gray rocky terrain.

Niflheim - Northmen's Despair

Compared to Oinos, the terrain in the second layer was rougher, like foothills, with cooler temperatures, healthier vegetation including pine trees, and no disease. Everything was cloaked in dreary fog and mist, limiting vision to about a hundred feet (thirty meters).

Pluton - Olympian's Gloom

The lowest level of Hades contained the base of Mount Olympus, a direct conduit through the Astral Sea to the plane of Arborea. The gray motif continued throughout this layer but most of the vegetation was black willow trees and dry, dying poplars.

Inhabitants

The daemons (Yugoloths) were the presumed rulers of Hades, but were actually outnumbered by the bird-like diakk and the greater powers had no trouble carving out realms for themselves. Also known to inhabit all layers of Hades were nightmares, mephits and night hags.

Color Pools

Rust or Iron Gray

Ethereal Curtains

Dark Red

Tuning Fork

Iron, E

Shape and Size

Infinite

Gravity

Normal

Time

Normal

Alternative Name(s)

The Gray Waste

Type

Dimensional plane