The Damethear are the Dark Elves who live deep Underneath in the Rootsworld. They have ebony skin with gray, silver or white hair and red, blue or violet eyes. They are short and lithe, even for Elves. Damethearn society is flagrantly sexual, and thier clothing reflects that. Also, there is little climate in the Rootsworld, and clothing serves no protective functions. Skin tight uniforms, either silk or leather, are common, in Clan colors.

There are three Dametharn cities in the Rootsworld, and one Surface city in the Landspine and ruins of another in the Wyrmpass Mountains. Undoubtedly the Heart of Darkess, located some ten miles directly Underneath the Worldstree, is their Capital and Largest City. The Heart of Darkness takes advantage of the Unusual Properties of the Roots to build a hanging city where Gravity is not an issue. Haliolezia is in a giant Vault, built amidst the Fetid Forest. It is a city of Fungi and Death, layer upon layer of mushrooms, the buildings themselves burls and pustulent gnarls. Karezh'akul is on an island in the Dripping Labrynth Lake, protected by a vast maze of drip formations and geysers. Tyulandandiul is the last Surface city, and its location is Hidden (except possibly to the Jeweled Skull Oreads). It is a city of echoes, shadows and whispers - alwaying seemingly empty.

The Damethear are Great Masters of Lorecraft and have in addition mastered certain Demonic Arts which permit them to bargin with the Denizens of the Lower Worlds. There are Demons in all the Dark Elven Cities - the Clan Gods themselves are Demons.

Like other Elves, the Damethear subdivide themselves into Extended Family Groups with Totemic Animals. For the Dark Elves, these are Clans Spider, Bat, Wolverine, Blind-Shark, Mole and Chimera. Unlike the Elathe and Naelathe, Cities are not controlled by Single Clans. Rather the Eldests of each Clan maintain Palaces in the Heart of Darkness, where they use their Lenses to open Gates to the Infernal Worlds via the Roots. All of the Cities are likewise multi-clan (and multi-race, Demons and Iron Alliance creatures abound).

Power, honor and terror are the driving Forces of the Damethear. They do not experience Love or any such, but are strongly motivated by Lust and Passion. They are cruel and delight in mental games that are often fatal. The Demonic Arts gives them some control over Death, and they thus place no value on Life. The need to maintain Clan Honor is the only factor that allows Dark Elves to have a society.