Duula was a male Selkath who lived in Ahto City on Manaan before and during the Jedi Civil War. He was a judge on the Ahto City Civil Authority court, and a strong advocate for the Sith Empire. Duula believed that the Galactic Republic was in stagnation; he saw the Sith as a fresh change-of-pace. He, along with his fellow judges, presided over the case involving the murder of Elassa Huros, in which the amnesiac Revan served as Arbiter for the defendant, Sunry.