The Autonomous Lunar City Aires (also Ayers City) is a lunar city in the Mobile Suit Gundam novel Mobile Suit Gundam Sentinel. The name "Aires" is possibly likely a misromanization of the name "Ayres", the general Romeyn B. Ayres, that fought in the First Battle of Bull Run during the American Civil War; but more likely, the city is named after the constellation of Aries.