“Urr... With this wound, I'll be nothing more than a burden. I've no choice. I must retreat. Good luck, everyone...”
—Ena's death quote from chapter 28 of FE9
Ena first appears as a tactician to a Daein general. Later when confronting her in the Daein capital it is discovered that she is one of the dragon tribe laguz. After fighting the Black Knight it is revealed that she is the grandaughter of Nasir. At the end of the game, the player learns that Ashnard's mount was in fact a warped dragon laguz and Ena's love.
She spends most of the game helping Prince Kurthnaga as a subject, at the end of the game it is revealed she is pregnant with the late Rajaion's child and the first dragon laguz to be born in centuries.
Ena will join at the beginning of the second-to-last chapter, Chapter 28: Twisted Tower only if Ike did not manage to defeat the Black Knight in Chapter 27: A Moment of Fate. If Ike succeeds in defeating the Black Knight, Ena will merely accompany the army as a NPC, and Nasir will join in her stead.