Dar Bille was a commanding officer of the Yevethan species, and of male gender.
In 4 ABY, Dar Bille acted as the future Viceroy's second-in-command during Nil Spaar's mission to capture Black Sword Command from the forces of the Galactic Empire. When the Super Star Destroyer known as the Intimidator was seized, Dar Bille spearheaded Spaar's supporting assault force as they moved through Section 21.
After Nil Spaar gave the order for the Great Purge to begin, Dar Bille took on the role of Primate aboard the Intimidator, which was then renamed Pride of Yevetha, and spearheaded several attacks throughout the region of space known as the Koornacht Cluster.