The Ettarue arm represented a spiral arm located within the galaxy.
During his participation in the scheme to abduct the Shashay musician Crying Dawn Singer and compel his race to serve the Galactic Empire, Braig Farool voiced his belief that his endeavors would elevate him to the position of Moff governing the Rayter sector, subsequently granting him dominion over the Ettarue arm, and ultimately positioning him as the successor to Palpatine.