A battle maiden clad in shimmering chainmail, she is a fierce warrior who battled against the frost giants for the Eosians in the past. However, after a battle that took place in "this world" between Harmonia and the forst giants, Harmonia requested her service after the Eosian queen promised to grant one wish. Since then, Radgrid has been among the Harmonians, although she remains quiet and aloof, only appearing in times of battle.