Azura is a main playable character and the deuteragonist in Fire Emblem Fates. She is a princess of Valla and Nohr, but was captured and held prisoner by Hoshido, similar to the Avatar's situation.
(Source: Fire Emblem Wikia)
Aqua
アクア
Fire Emblem Echoes: Mou Hitori no Eiyuu Ou Comic Anthology
