Shinobu Oshino of Bakemonogatari

Shinobu Oshino is a mysterious girl who acts as Meme Oshino's constant companion in the ruins of Eikou Cram School . She was formerly the powerful 500-year-old vampire, coming from a royal bloodline, named Kiss-Shot Acerola-Orion Heart-Under-Blade, but is now in the form of an eight-year-old girl after losing her powers. She refers to herself using "washi", which is often used in fictional settings to represent characters of old age.

Shinobu is a female with yellow eyes and long blond hair whose ends curl outward at the end. During the course of the series, she took on several changes in appearance depending on how much of her vampire powers she posseses. In Bakemonogatari and Nisemonogatari, she assumed a younger form and wears a loose dress and a pair of sandals, with an aviator cap as an accessory in Bakemonogatari.

As demonstrated in Nisemonogatari, she can suck blood to become older; she appears as a girl in her adolescent years, tying her hair into a ponytail and wearing a black camisole inside a purple jacket, a black skirt and black hosiery.

After losing her vampire powers, Shinobu falls into a long period of stupor. She is frequently seen in Oshino's place with her hands tucking her knees in, her face always in an emotionless state; she often spends most of the day in one spot, doing mostly nothing. Shinobu also does not talk to anyone, but she is familiar with Koyomi Araragi and Oshino, and she would follow requests from either of them without hesitation.

During Nisemonogatari, however, she reveals a much brighter personality after "reconciling" with Koyomi. She is rather talkative, and often asserts her superiority through her archaic speech, although it is mostly playing with Koyomi's tendency to act as the follower between the two.