Artemis: Artemis is one of three feline characters of the Japanese anime series, Sailor Moon and the second to appear in the story. He is the white-furred guardian animal to Aino Minako He trained her to be Sailor V and then aided Luna when the Sailor Soldiers were reunited.
Luna: Is the first felines to appear in the series; Luna is Sailor Moon's guide cat and embodied conscience. She is there to train Sailor Moon and the other Sailor Senshi. At the beginning of the series, she gives the Senshi their transformation devices and other items.
Diana: Luna and Artemis' child from the future. Diana also acts as a guide to young Chibi-usa (Sailor Mini-Moon).