Luna is a fictional character in the Sailor Moon media franchise. She is a black cat who has the ability to talk, and serves as a mentoring figure for the titular character and her companions, the Sailor Guardians. Luna makes her debut in the first act or episode of each version of the series, in which she meets Usagi Tsukino and tells her she is Sailor Moon, and gives her a brooch that allows her to transform. Luna features prominently in the first story arc, and although she becomes a supporting character for the rest of the series, she keeps providing the Sailor Guardians and Tuxedo Mask with advice, her family relationships are explored alongside her partner Artemis and their daughter from the future Diana, and she even manages to transform into a human being at key points of the series.

Minako Aino , better known as Sailor Venus , is a fictional character in the Sailor Moon and Codename: Sailor V manga series written by Naoko Takeuchi. Minako is her sailor form's alternative human identity as part of the Sailor Guardians, female supernatural fighters who protect the Solar System from evil.