Luna

Luna was a talking cat and advisor to Usagi Tsukino.https://anilist.co/character/2030/UsagiTsukino It was she who first detected Usagis power but at the time did not realize that she was the Moon Princess. Luna and her partner Artemishttps://anilist.co/character/5408/Artemis were advisors to Queen Serenityhttps://anilist.co/character/17010/QueenSerenity in the Silver Millennium and when the kingdom was ruined Serenity used the power of her Silver Crystal to send the two cats to Earths future in order to awaken the Sailor Senshi. She and Artemis one day married and had a daughter named Dianahttps://anilist.co/character/11899/Diana who became the advisor to Chibiusa.https://anilist.co/character/2827/Chibiusa Chibiusas toy Luna P was also modelled on Luna. Source: Wikimoon