Even as her parents were guides to occasionally of the central characters (Luna to Sailor Moon, and Artemis to Sailor Venus) Diana also acts as a decision to immature ChibiUsa.

Diana arrives from either a first, & initially, shocks them sr. cats because it is non sure enough world health organization she is or even world health organization she belongs to. Luna (the female cat) had so led to think that Artemis got cheated on her & had the kitty by owning a second cat, however these are late revealed that she is the girl of the 2. When she is from either a first where Usagi & Mamoru come Queen & King of Globe, she refers to the children by using the honorific of -sama.

Around Roman mythology, Diana is the equivalent of the Greek Goddess Artemis, a goddess of the moon & of untamed fauna.

In the anime, Diana is voiced by Kumiko Nishihara.