Heroes of Kadastrai
The Dogoths are shapeless evil beings from the mind of The Great Dark One, Zargon, He created them as a manifestation of all evil in Marinol.
They Controlled the Area that is now know as the Dark Forest of Drachen, and the lands surrounding it.
During the Age of the Dragons, forced breeding was implemented by the Chromatic Dragons, thus From the Dogoths came the Demons, Lich, Ravagers, Drow, Goblins and Orcs, and Fiends, as well as the Undead. The Dogoths Hid in the Dark Places of the World when they could, and there they stayed
They still may exist on the volcanic island of Rakenspire, but anyone who looks upon them is driven insane and so no one really know if they do in fact exist