Ninian (Fire Emblem) Fire Emblem: Rekka no Ken Images

Ninian (ニニアン, Ninian?) is a quiet, sweet, beautiful, and polite dancer and the older sister of Nils, a teenage bard.

Ninian was born in Ilia, her lineage half-human, half-dragon. Her father is speculated to be, ironically, the antagonist Nergal, and her mother an ice dragon known as Aenir, kidnapped during the Scouring. Nergal decided to search for her, but left explicit instructions to the infant Ninian and Nils to return to pass through the Dragon's Gate after a period of time, should he not return. Ninian and Nils waited, but Nergal never returned, and they passed through the Dragon's gate in their dragon forms, losing most of their memories, excluding some, like their missing mother, which Ninian kept a silver ring as a memento. They eventually settled in Paradise, but longed for Elibe, their birthplace. Thus, when they received an opportunity to return through the Dragon's Gate and back to the human realm, they quickly cooperated and passed through the gate, losing most of their quintessence and being forced to revert to their human forms.

However, this was after Nergal was corrupted by the dark magic that had, ironically, been used to open the gate to reunite with his children. Forgetting his children and his motivation to open the gate, he was deluded into thinking that the purpose of opening the Dragon's Gate was to gain power beyond belief and rule over Elibe. He succeeded, and he and Limstella were confronted by the two siblings. Ninian and Nils were held captive by the Dark Druid, but they eventually escaped from Valor and were chased across Elibe by Nergal's morphs and Black Fang agents fooled by Nergal's morph, Sonia. Eventually, they sought refuge in an inn in Khathelet, but Ninian was ambushed by a group of Black Fang assassins and kidnapped. While being escorted to the Black Fang hideout, however, the assassins were attacked by the Pherae noble, Eliwood, who was meeting up with Hector for their yearly spar. Eliwood escorted the girl back to Nils, who had already defeated the Black Fang agents pursuing them with help from a wandering Sacae lord and her group: Lyn.

Ninian is a gentle, polite, and courteous girl, treating all of the people she can support with lots of recognition, respect, and courtesy. However, it is shown that she can also be very brave to protect those she loves and protects, shown when she gives herself up to Nergal to protect Nils. Her speech patterns are also very slow, meaning that she pauses and thinks a lot before she speaks, most likely out of shyness since she's re-adapting to her old home in Elibe.

Despite this, she retains an enigmatic aura for fear of any learning of her heritage causing some people to seeks to use it for their advantage, prime example of this being Nergal. While they attempt to defeat Nergal, she develops feelings for Eliwood, and this can be returned by the lord, giving her incentive to remain in the human world and marry the lord.

If Eliwood ends up with Ninian, she becomes the mother of Roy (Fire Emblem), but dies of illness shortly after, as warned by Nils.

Source: Fire Emblem wiki