Naru Osaka - Naru is an elegant girl who goes out with Umino Gurio. She is one of Usagi Tsukino's best friends. She is attacked by monsters very often. In the first season, she showed an attraction to Nephrite, but before they could even start dating Nephrite was killed by Zoisite's youma. In the first episode Naru's mother was captured by a youma and the youma impersonated Naru's mum. The youma tried to take away people's energy by selling jewellery that sucked energy out of people at Naru's real mother's jewellery store (Osa-P.)
Umino Gurio - Umino Gurio is a nerdy boy that is ready to do anything for his girlfriend, Naru. Umino and Naru won a love competition when Umino confessed his love to Naru very romantically. Umino used to have a little crush on Usagi, but it stopped quite early in the series.
Ikuko Tsukino - Ikuko is Usagi and Shingo's mum. Her husband is called Kenji Tsukino. She is quite a typical mother, doing lots of housekeeping and cooking. It is mentioned in one episode that Ikuko wasn't very good at maths. Ikuko gets furious at Usagi when she comes home with a bad grade. Ikuko is said to bake delicious lemon pies.
Kenji Tsukino - Kenji is Usagi and Shingo's dad. He is rarely seen, since he is the type of man that works all the time.
Shingo Tsukino - Shingo is Usagi's younger brother. He is quite annoying at times. Usagi gets quite annoyed about him but cares about him a lot as well.
Shingo once had a crush on Ami Mizuno.
Shingo once had a crush on Ami Mizuno.
Motoki Furuhata - Motoki is a cheerful guy that works at the arcade. Makoto and Usagi used to have a crush on him. In PGSM (live action sailor moon), Motoki gets married to Makoto. His girlfriend is called Reika.
Reika Nishimura - Reika is Motoki's girlfriend. She is very clever, so she went to Africa to study.