The talking black cat who offers Usagi Tsukino the brooch that
transforms her into Sailor Moon. Luna is serious most of the time, but
still laughs at Usagi whenever she's in a pinch because of her own mistakes. Despite that, she has an almost motherly
attitude towards her and scolds her very often while at the same time training her to be a better senshi. Out of
everyone, she gets along best with Artemis and Ami Mizuno.
In Crystal, Luna warns Usagi repeatedly not to get close to Tuxedo Kamen, believing him to be a possible enemy. In the Classic anime, Luna always appears as a cat, but she is briefly turned into a human in "Sailor Moon S: The Movie", the second movie of the franchise. So far, she has only appeared as a cat in Crystal. Luna also appears as a Senshi, though only in the live-action series.