Her ability to never lose her cool, no matter how difficult the mission, made her very well trusted by Joshua. She has bonded with her red dragon, Thrash, as a child and she rode him into battle. Her valiant and majestic bearing made her a much-feared opponent on any battlefield. She wielded a spear with a straight spearhead and unadorned handle.
Immediately after Ted died following his unexpected confrontation and reunion with McDohl, Milia was the one who stepped forward to take the Moonlight Herb, demonstrating her collected nature that served her well.
Once the dragons had been cured, Milia joined the Toran Liberation Army. She would spend some time with Futch, attempting to keep his spirits up and keep himself from blaming himself for Black's death. The freezing breath of her dragon, Thrash, would be used prior to the Battle at Floating Fortress Shasarazade to create a fleet of ice ships for the attack.
Milia's weapon upgrades as Valkyrie, Valhalla, and Brunhildt, which are all characters or terms from Norse mythology. The Valkyries were the choosers of the slain who escorted those who died in battle to Valhalla. Valhalla was the majestic hall where those slain in battle were allowed to spend the afterlife. Brunhildt is a mangling of Brunhild, who was a valkyrie doomed to live a mortal life and married Gunnar/Gunther after being rescued by Sigurðr/Sigfreid.