The show was created by Daron Nefcy, who served as a storyboard revisionist for Wander Over Yonder. She is the first woman to create an animated series for Disney XD. Dave Wasson serves as director and Jordana Arkin as story editor, while both co-executive produce the series.
Star Butterfly is a magical princess from the dimension of Mewni. On her fourteenth birthday, she receives the family heirloom wand. However, after she accidentally sets fire to her castle, her parents decide that a safer option is to send her to Earth as a foreign exchange student. She befriends Marco Diaz and lives with his family while attending Echo Creek Academy. Star and Marco must deal with everyday school life while protecting Star's wand from falling into the hands of Ludo, a villain from Mewni who commands an army of monsters. Star and the folks from Mewni are able to travel across dimensions using "Dimensional Scissors" that can open portals.
Cast and characters
Star Butterfly (Eden Sher), a magic teenage princess who is sent to Earth to live with the Diaz family by her parents.
Marco Diaz (Adam McArthur), the teenage son of the Diaz family. When Star arrives on Earth, she takes him on adventures to fight evil villains.
Ludo (voiced by Alan Tudyk) - The primary antagonist of the series. Ludo is a short, dark grayish-green monster with a beak-like mouth. He plans to obtain Star's wand so that he can take over the universe.
Buff Frog (voiced by Fred Tatasciore) - Buff Frog is a humanoid frog-like creature that is a member of Ludo's army. He acts as Ludo's spy.
Tom (voiced by Rider Strong) - A three-eyed horned demon who is Star's ex-boyfriend.
Toffee (voiced by Michael C. Hall), an evil efficiency expert who is hired by Ludo and later overthrows him as leader of his army
Daron Nefcy also based Star Butterfly on female characters she admired from Japanese TV shows.
Originally, Star Butterfly was going to be a fourth grader but the executives wanted the character to be a little bit older. While it was different than what Daron Nefcy wanted, it did allow the show to play around with concepts that fall more in line with the teenage audience of Disney XD.