Unseelie

Possessing a strong affinity for the Negative Plane and undead, the Unseelie tend towards evil and chaos. On their home planes they became the Yugoloth or daemons. Avid explorers, their descendants in the Astral plane have developed into Githyanki and produced both goblins and the disease of lycanthropy on the material plane. Almost universal sadists, they are often credited with either inviting the Old Ones into this universe, being corrupted by them, or both.