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

Marco Diaz may look like an ordinary boy living on Earth, but he has a very cautious and responsible personality. He has a realistic side, trying to follow rules and avoid danger. While he initially gets caught up in Star's chaotic behavior, he gradually becomes her most reliable partner. His brown hair and red hoodie are his trademarks, and he fights calmly even in crises thanks to his Taekwondo training. He is a brave, caring character who experiences significant growth. Human

Appears as the main villain of Season 1. He is portrayed as a typical bumbling 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 obtain powerful strength. He travels with his gang of monsters, constantly looking for a chance to snatch Star's wand. Mewman

Tom Lucitor is the prince of the Underworld, a demon boy with red skin, horns, and fire powers. On the surface, he is hot-tempered and prone to mood swings, but he is actually a sensitive soul who is easily hurt. Although he causes trouble due to his poor anger management, he grows by learning how to control his emotions. He is Star's ex-boyfriend who truly loved her and was prone to intense jealousy. 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 affection for her friends is sincere. She loves flashy things and has exaggerated emotional expressions, often making the atmosphere quite loud. Despite being a coward, she shows courage when necessary, acting as the team's mood maker with her unique chatter and honesty. Mewman

It was revealed that she is 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 even told Marco not to ever let Star go when they met again. Marco's ex-girlfriend Human

Math Teacher She is a troll. Human She is prickly and fastidious. She was turned from a human into a troll by Star's magic (surprisingly, she seems to like this form...)