Ruby Moon is a creation of Eriol. She is the equil of Yue. She really can`t be defined as a she but more of an 'it', neither male nor female. But which can be plainly seen is that Ruby looks greatly like a women, so lets just call Ruby a she. Ruby is very beautiful (well atleast I think so ^_^) with red hair and black butterfly wings. She is truely very lovely in appearance.

Ruby Moon has two forms, that of Ruby Moon and Nakuru. Nakuru looks exactly like Ruby except she has brown hair instead. When she is Nakuru she attends the highschool Touya goes to. She finds Touya very facinateing and always hangs on him one way or another. The reason she is so attracted to Touya is because he has the power to see ghosts (magical ability) and this magic draws her to him. ^_^ From what I have heard when ever she hangs on Touya she really is sucking out his magical powers. But Im not definit on this at all.