Star is the daughter of a royal family in the kingdom of Mewni. Unlike other princesses, Star fights monsters and get overexcited. She also has a magic wand, but has trouble controlling it. So her parents sent her to Earth in order to help Star control her wand.
- Star Butterfly will meet the Justice Guardians in Jeffrey, Jaden, Hiccup & Friends' Storm Adventures of Star vs. The Forces of Evil. During the series, Aqua becomes Star's magic mentor.