Yuki "Yukina Freesis, Yuki Kaina" Kaai

About

Age: 9
Height: "As tall as 10 big apples"
Weight: "As heavy as 86 apples"

Kaai Yuki is a Japanese VOCALOID developed and distributed by AH-Software Co. Ltd., and was released in December 2009 for the VOCALOID2 engine. Yuki's vocals are based on an elementary school student. With her voice provider being a young girl the identity of her provider has never been revealed for legal reasons. She is the first female VOCALOID whose voice samples are not produced from an adult.

(Source: VOCALOID wiki)

Alternative names/personalities:
Aku no Musume: Yukina Freesis (ユキナ=フリージス)
Venomania-kou no Kyouki: Yuki Kaina