Valethske

The Valethske were a species that professor Hamilton Smith had theories about. (BNA: Dry Pilgrimage)

History
The Valethske worshipped the Khorlthochloi as gods when they had a galactic empire. The Khorlthochloi decided that they were becoming too aggressive and created a plague specific to the Valetheske, wiping most of the race out. The survivors rebuilt their culture, and several set out on the Great Mission, a centuries-long quest to find and destroy the Khorlthochloi. (PDA: Superior Beings)