Neogi

Neogi are a foul race of Aberrations from the Far Realm. Like many other Aberrations, they have taken up residence in the Underdark, away from the eyes of more wholesome beings. Neogi are master slavers, and they often scheme with corrupt dwellers on the surface to import Humans, Dwarves, and other races to serve in the endless darkness below.
One such slaving ring was operating out of Greatwall Keep with the complicity of Delben Larkspur, a soldier who served there. This ring was rooted out by the Fire Wasps.