Miss Heinous is a minor antagonist of the Disney XD animated series Star vs. the Forces of Evil.

She was the former headmistress of St. Olga's Reform School for Wayward Princesses who strictly controls bad behavior in wayward princesses, forcing them to act like "proper" princesses with no individuality of their own. In the second season, she becomes the arch-nemesis of the show's deuteragonist, Marco Diaz.

She was voiced by Jessica Walter

Debut and Appearance

As the headmistress of St. Olga's Reform School for Wayward Princesses, Miss Heinous makes sure her staff has the princesses attending her reform school be reformed into normal princesses. For particularly troublesome princesses, she uses the "Solitary Conform-ment Chamber," which forcibly brainwashes them into acting the way she wants them to. Despite her best attempts, Star Butterfly and Marco Diaz infiltrate the school and cause a revolt. After they leave, she finds out that they came from Earth and swears to annihilate them.

Miss Heinous loses her job as headmistress and is seen living with her assistant Gemini in a rundown apartment complex, with very little money. She hires Rasticore Chaosus Disastervaine to find and destroy Star and bring Marco to her as revenge for what they did to her. However, Rasticore fails, and his hand is delivered back to Miss Heinous, to her displeasure.

she, along with Gemini and Rasticore's slowly regenerating arm, comes to the Diaz Household, informing Marco's parents that he has wronged her. After a brief negotiation, she is able to convince them to allow her to punish him by filming a video for the rebel princesses Marco inspired where he renounces the words he used to incite the revolt. Despite Marco saying this in a deeply sarcastic way, Heinous is satisfied with the results, and departs. That night, as she prepares to sleep inside her car, she talks to Rasticore's arm, telling it she will annihilate Marco and Star, and make the multiverse "shiver in fear" of her. As she says this, she removes the makeup used to hide her cheek symbols.



  • Due to having club markings on her cheeks, Miss Heinous seems to have a connection with the Butterfly family.