Mihiro Ardygun is the heroine of Super Robot Wars W. She is the co-pilot of Valhawk alongside her older brother, Kazuma Ardygun, the hero of Super Robot Wars W. She is the youngest of the Ardygun Family. She is 10 years old in chapter 1 and went to 11 in the chapter 2 of the game. Despite her age, she supports Kazuma on Valhawk as the sub-pilot, but proves capable of piloting the machine on her own. She controls the aiming and evasion programs. Her great skill in combat makes Quatre from Gundam Wing amazed in the beginning of the game.