Full Name: Star Butterfly Star Butterfly is a princess from the Mewni Kingdom in another dimension. After causing too much trouble, she is sent to Earth as a foreign exchange student. She is bright, impulsive, and mischievous, but has a warm heart and truly cares for her friends. She is characterized by her blonde hair and heart-shaped marks on her cheeks, and she loves flashy, cute styles. She uses a magic wand to cast powerful and unique spells, growing into a responsible and truly strong magic user throughout the story. Mewman

Marco Diaz looks like an ordinary boy living on Earth, but he has a very cautious and responsible personality. He is a realist who follows rules and tries to avoid danger. Initially, he gets caught up in Star's chaotic behavior, but he gradually becomes her most reliable partner. His trademarks are his brown hair and red hoodie, and he fights calmly in crises using his Taekwondo skills. He is a brave, caring character who grows over time. Earthling

Appears as the main villain of Season 1. He is portrayed as a typical incompetent villain and possesses the traits of a talkative antagonist. In Season 2, his eyes get larger and he grows a long beard. His main goal is to steal Star's wand to gain powerful strength. He travels with his gang of monsters, constantly looking for an opportunity to snatch Star's magic wand. Mewman

Tom Lucitor is the prince of the Underworld, a demon boy with red skin, horns, and fire abilities. On the outside, he is hot-tempered and moody, but he actually has a sensitive and easily hurt personality. He causes trouble due to his poor anger management but grows as he learns to control his emotions. He truly liked Star and tends to be quite jealous. Mewman

Star's best friend, characterized by being a floating unicorn head without a body. She is talkative, self-centered, and has a bit of a 'princess complex,' but her love for her friends is sincere. She loves flashy things and tends to express her emotions in an exaggerated way, often making the atmosphere noisy. Despite being a coward, she shows courage when necessary and acts as the team's mood maker with her unique chatter and honesty. Mewni Pony

Revealed to be bisexual and has a new girlfriend named Chloe. Because of this, her friendship with Marco is highlighted in the story, and the three of them often hang out together. After their breakup, she told Marco when they met again to never let Star go. Marco's ex-girlfriend Earthling

Math teacher. She is a troll. Earthling She is prickly and fastidious.