Ryuko Matoi

Ryūko Matoi (纏 流子 Matoi Ryūko?) is the daughter of Isshin Matoi. She transferred to Honnōji Academy searching for the twin of her red Scissor Blade and the person who used it to murder her father. It is later revealed that she had supposedly died after a failed experiment to fuse her with Life Fibers and is the younger daughter of Ragyō Kiryūin and sister of Satsuki Kiryūin on Planet Maxus.

Appearance
Ryūko is a seventeen year-old girl of medium height and mid-length black hair with a single left-swept red highlight on her bangs. Her blue eyes have peculiar gear-shaped pupils with eight grooves around the edges. Her outfit coming into the series is a simple white shirt with a red ribbon tie, a black miniskirt, white sneakers, and a black & white jacket with rolled up sleeves. During her childhood, she wore a red collared shirt with a white skirt and white shoes.

Her clothing is later replaced by Senketsu, a living navy blue sailor uniform. Her shirt (Senketsu's upper jaw) is a crop top with mid-length sleeves that bares her midriff. Her sailor-style collar with red stripes is tied by a multicolored scarf that also serves as Senketsu's left "eye." Senketsu's right eye is covered by a black "eyepatch" with an X-shaped scratch over it (perhaps emulating her father's right eyepatch). Her skirt (Senketsu's lower jaw) is held up by suspenders attached to a belt. Aikurō Mikisugi later provides her with a Seki Tekkō (赤手甲?, lit. "Red Gauntlet"), a red, finger-less, left-handed glove with a built-in syringe designed for Ryūko to conveniently draw blood and feed it to Senketsu.