Sailor Moon Luna and Artemis

Luna or Sailor Luna is a talking black cat that appears in the very beginning and consults Sailor Moon and the Sailor Guardians as well as trains them. Further in the series, Luna bathed with the Silver Crystal and got the ability to transform herself into Sailor Luna and also to have a human form. Artemis is the white guardian cat of Minako - Sailor Venus, and her advisor as well. Sailor Moon Luna and Artemis as an anime cursor.