The Soothsisters of Pelgrin were a sentient species. According to Evocar by Direus'pei, they were made extinct by Xim because they prophesied his empire would fall.
Sources[]
Xim Week: The Despotica (Part II: The Pirate Prince) on Hyperspace (article) (content removed from StarWars.com and unavailable) (First mentioned)- Xim Week: The Despotica (Part IV: Evocar) on Hyperspace (article) (content removed from StarWars.com and unavailable)