The first Strike Witch and sub-commander of the unit, with the commissioned rank of Squadron Leader. Mio is also the oldest witch in the 501st at nineteen (later, twenty) years old and, like Yoshika, comes from Fuso. She is seemingly the toughest and most mature of the Witches, being an experienced veteran of the early fighting against the Neuroi. She knew Yoshika's father while he was first designing the Striker Unit and was the first person to pilot one. Her usual task is to train new recruits, and in this role she becomes a very strict disciplinarian, appropriately gaining the ears and tail of a Doberman when equipped with her Striker. Otherwise she is quite friendly, if a little too forward at times, with a very distinct laugh. Under Mio's eyepatch is a magic eye that grants her increased visual prowess and the ability to spot Neuroi cores when used. Being 19/20 years old, Mio's magical power has declined too far for her to erect effective shields in combat, however she can still fly and use her magical eye. In the second season, she builds herself an enhanced katana called the Reppumaru that can cut through Neuroi beams to compensate for the lack of shields. She carries a type 99 aircraft cannon into a battle along with a magical katana strapped to her back capable of cutting apart giant Neuroi. Her Striker Unit is based on the A6M Zero, later a Kawanishi_N1K in Season 2 and she herself is based on Saburo Sakai.