I am Mia. . She is one of the members of the Greil Mercenaries, and works as a sell-sword. Mia is a sellsword originally from Begnion but was hired by Crimea to defend it against the invading Daein army. Mia was captured by Daein and was nearly sent to a prison camp if Greil had not gotten to her first and released her. Mia formally becomes a full fledged member of the Greil Mercenaries and is among the forces Ike brings with him when he is contracted by Bastian to rescue Lucia.

After the defeat of Ashera, Mia sets off on a journey around Tellius in search of new opponents, occasionally stopping by Greil's retreat to rest. Mia can be described as energetic and quirky. She is obsessed when it comes to proving the strength of her mettle, a fact that surfaces prominently in her support conversations, where she will often run around and challenge the first person she sees to duels. Despite her eccentricities, she has a heart of gold, willing to lend her aid to people who need it. For instance, her supports with Ilyana sees her attempting to look after the mage when the latter is fatigued from her usual hunger spells. Also, one of her training sessions with Rhys has her ardently forbidding him from practicing with swords when she sees that doing so makes him ill. She seems to be a believer in divination as she sought a fortune teller with a notable reputation for a reading. She received word that she would have a rival "with white robes flowing in the breeze". Unfortunately, Mia would interpret this rival as Rhys since he was the only person associated to her at the time that matched the description, showing a bit of hot blooded enthusiasm without much consideration outside of a literal first-impression interpretation of a vague reading.

Mia is stalwartly opposed to the backdated viewpoint of women being unsuited for the battlefield, training rigorously every day to disprove this notion. This belief has had a major influence on her being quick to accuse male duelists of going easy on her or assuming that her prowess