Hades

Hades is an evil plane of existence bordering The Negative Plane. It is considered the most evil of all the outer planes, and consists of three endless layers: Regren, Xandlar, and Vermineles.
Very few creatures willingly make Hades their home, and the few that do are usually incredibly dangerous, stupid, or both. One of the major populating creatures is the Yugoloths, a cruel species originally commissioned into existence by Asmodeus as his own personal army.

Alternative names:
Hades is also known as The Grey Waste.

Type

Dimensional plane