Princess Smooshy is a character from the Disney XD animated series, Star vs. the Forces of Evil. She is a princess from an unknown kingdom, and a student of St. Olga's Reform School for Wayward Princesses.
She makes her debut in "Sleep Spells", where she escapes St. Olga's in hopes of stealing Star Butterfly's face and having her take her place at the school. In the episode "St. Olga's Reform School for Wayward Princesses", a teacher is trying to teach her how to be gentle and kind with birds, but she just keeps eating them, prompting the teacher to repeat the lesson over and over.
In the episode "Princess Turdina", she was captured by Meteora Butterfly and drained of her youth. It is unknown if she was still alive after the process.