Youko

Youko is a Kyuubi no Kitsune (Nine tailed fox) that appears in Monster Musume: Everyday Life with Monster Girls Online.

Trivia

 * A Kyuubi no Kitsune, or Nine Tailed Fox, is said to be the final form of the Kitsune. In most myths a Kitsune's mystical power is based on how many tails they have, making the Kyuubi no Kitsune the strongest variation.
 * Youko's name is one kanji change away from being "Demon Fox" (妖狐).