Admiral Erstis was a Czenti Nymean admiral from Czenti. Since his species were not widely traveled, he decided to remain within the Ascendancy instead of joining the regular Ni'novian forces. He led the Fourth Fleet which was stationed on the Rimward boarder of the Nymean Ascendancy. Through the Galaxial War, he and his fleet remained on the defensive guarding against any encroachment by the various species in the Unknown Regions trying to take advantage of the War.