The greatly diminished Ratbane Clan was a nephilim clan which roamed the plains of Valorim. Until the discovery of the continent by the Empire the Ratbane Clan had free reign over much of northern Valorim. The clan was quickly drawn into a bloody war with the invading Imperial forces and with the establishment of the Keep of Tinraya the Dervishes were able to initiate hit and run raids that devastated the clan's forces.
Over three decades of the conquest of northern Valorim the Ratbane Clan were wiped out, leaving only a pale remnant of the mighty force they once were. The survivors fled to the south where they subsisted in the hills and were faced with attacks from Ursagi.