Magical Friends of the Sailor Senshi

Queen Serenity: Usagi's mother from the Moon Kingdom, saved Usagi and her court else when it was destroyed.

Urawa Ryo (Greg): One of the seven nijizuishou (rainbow crystal) carriers. He could see the future. He was also in love with Ami, and got a better grade on a test than her. He was only in two episodes. (Also in human friends section.)

Princess Kaguya (Princess Fireball): From the same planet as the Sailorstarlights. The Starlights are in search of her throughout Stars.