As Usagi battles against the Dark Kingdom, she is joined by other girls also awakening as Sailor Soldiers: the timid but intelligent Ami Mizuno (Sailor Mercury), the hot-headed miko Rei Hino (Sailor Mars), the tomboyish but romantic Makoto Kino (Sailor Jupiter), and the aspiring idol Minako Aino (Sailor Venus). Minako is joined by Artemis, her feline advisor and Luna's partner. The Sailor Soldiers are often supported by the mysterious Tuxedo Mask whose civilian form is Mamoru Chiba, a college student with whom Usagi eventually becomes romantically involved.