Ryuko Matoi

Ryūko Matoi is the main protagonist of Kill la Kill. She transferred to Honnōji Academy searching for the twin of her red Scissor Blade and the person who used the weapon to murder her father, Isshin Matoi.

It is later revealed that Ryūko is the daughter of Sōichirō and Ragyō Kiryūin and the younger sister of Satsuki. Ryūko had supposedly died as a baby after Ragyō had attempted to fuse her body with Life Fibers, which was declared a failed experiment by Ragyō herself; however, Ragyō's experiment would later be revealed to be a success. Ryūko was later saved by her father, with her father faking her death and raising her under the alias of Isshin Matoi until his death at the hands of Nui Harime. Six months after Isshin's death, Ryūko transferred to Honnōji Academy.

Ryūko is a 19 year old girl of medium height. She has blue-black hair of medium length with a single left-swept red highlight on her bangs as well as blue eyes, which have peculiar gear-like pupils with eight grooves around the edges.

Ryuko has large/massive soft breasts with plump juicy thighs and a large ass.

her clothing is a living navy blue sailor uniform. Her shirt (Senketsu's upper jaw) is a dark navy sailor uniform with mid-length sleeves that bares her midriff. The collar has red stripes and is tied by a multicolored scarf that also serves as Senketsu's left eye. His right eye is covered by a black "eyepatch" with an X-shaped mark 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, fingerless, left-handed glove with a built-in syringe designed for Ryūko to conveniently draw blood and feed it to Senketsu. Ryuko wears blue and white striped panties under her skirt.

Ryūko's appearance changes further when using Life Fiber Synchronize with Senketsu. Her hair becomes even more feathery and is accented with vibrant red undertones and horn-like clips. Senketsu himself also undergoes a significant change in appearance after Synchronization; his "eyes" extend into wing-shaped crests jutting out from Ryūko's shoulders and his upper and lower parts transform into a black, skimpy suit of armor with red stripes.

The top section of the armor covers Ryūko's neck, lower-jaw, arms, and upper breasts, and possesses a red, triangular ventilation grill centered on Ryūko's upper back. The top armor piece is connected to her skirt by three red garter belt/suspenders (two in front, one in back), leaving everything between the underside of her breasts and her waist exposed. Her legs are covered with thigh-high boots with heels.

Ryūko has a relatively simple personality: fierce and stubborn. She fears little - she directly and disrespectfully addresses Satsuki Kiryūin, demanding that her questions be answered, and when she fights Takaharu Fukuroda even though she is clearly overpowered. Later on, she is shown to be quite embarrassed when forced to fight in Senketsu's very revealing alternate form, though she overcomes her embarrassment in Episode 3. Whilst she is not afraid of fighting to her death, she is somewhat self-conscious.

Ryūko is generally confident once she adjusts to using Senketsu. She's willing to try all sorts of unconventional and inventive methods to defeat opponents, seen in her battles with the Elite Four. Her confidence does occasionally backfire, as shown when she underestimates Uzu shortly after his eyes are sewn shut.

Even though most of the time she is seen stubborn and fierce, sometimes she can be calm, polite, content and warmly flattered.

Ryūko's strength far surpasses that of an ordinary human.

Because of her infusion with Life Fibers, Ryūko can regenerate her body to heal injuries that would kill an ordinary human. When her heart was ripped out by Ragyō, her heart automatically pulled itself back into her chest. Additionally, when her body was sliced in half by Ragyō, Ryūko was able to regenerate her body back together.

Ryūko is revealed to be Ragyō Kiryūin's second youngest child, whose body had been infused with Life Fibers, despite it being perceived as a failure by Ragyō back then. It is likely that her incredible potential and natural ability to synchronize with Life Fibers was a result of this.

Ryūko's signature weapon is one half of a giant pair of scissors, which she wields as a one-handed, single-edged longsword. The blade is capable of cutting Life Fibers, which are otherwise indestructible.

While using Life Fibers Synchronize, Ryūko can mechanically extend her Scissor Blade into a two-handed sword. Not only is the blade's length doubled in this form, but its strength increases exponentially and is able to slice far beyond its normal range. This ability is frequently used in preparation for a Fiber Lost.