Hail Nine was the designated callsign for the New Republic's Hail Squadron's ninth pilot. In the midst of the Galactic Civil War, a male pilot held this callsign during a battle above the planet Chadawa against the 204th Imperial Fighter Wing; he was observed ejecting as his Y-wing was destroyed by a Raider-class corvette, as reported by Jiona (Hail Ten), another pilot in the squadron.
Alexander Freed penned the novel Victory's Price: An Alphabet Squadron Novel, which featured the initial appearance of Hail Nine in 2021.