Momoko Kimura is a minor character from the live-action series Pretty Guardian Sailor Moon. She is a student at Juban Public Middle School and shares a classroom with the protagonist, Usagi Tsukino. In the special episode Act Zero, Momoko adopts the alias Sailor M and teams up with her friends Naru Osaka, who uses the alias Sailor N, and Kanami Abe, who uses the alias Sailor K, as well as a fourth girl using the alias Sailor Rabbit, to form a makeshift cosplay group of Sailor Senshi. Their aim is to prevent thieves from robbing the Jupiter jewelry store, though their attempt ultimately fails. Momoko wears a blue costume for her Sailor M identity. Within the main story, she is portrayed as one of Usagi’s school friends, appearing in a supporting capacity without any significant personal arc or special abilities. Her role highlights the everyday camaraderie among the students at Juuban and provides a lighthearted, non-magical parallel to the genuine Sailor Guardians. Her motivations are simple: she is a regular girl who, like her friends, wants to help and have fun, but she lacks any supernatural powers or deeper involvement in the series' central conflicts. Her key relationship is with Usagi and the other girls in her class, particularly Naru and Kanami. Momoko does not undergo notable character development across the series, as her appearances are limited to a single special episode. She possesses no notable abilities beyond being an ordinary middle school student.