Micaiah (ミカヤ Mikaya), also known as the Silver-Haired Maiden, is a wielder of Light Magic and the de facto leader of the Dawn Brigade. She has the unique skill Sacrifice, which allows her to give some of her health to heal another unit. She is the first main character since Cellica from Fire Emblem Gaiden who fights with magic and the first main character in the series to use it exclusively.
Micaiah is a very caring girl, yet somewhat bitter due to both her treatment as a Branded prior to the story and due to the abuse of Daein and its citizens by the Begnion Occupational Army. She is particularly bitter towards Ike, who she blames for the current state of affairs in Daein after the events of Path of Radiance, and shows her distaste whenever Sothe speaks fondly of him.
Micaiah is extremely loyal to Daein and Pelleas, to the point of fighting the Laguz Alliance even when she sees no reason to do so, and refusing to give up when faced by the Greil Mercenaries, who insist that Daein surrender in order to avoid casualties.