Millie Larsen
| Gender | Female |
| Age | 10 |
| Hair Color | Strawberry-Blonde |
| Occupation | Student |
| Grade | 4th Grade |
| Religion | Roman Catholic |
| Voiced by | April Stewart |
| First Appearance | Rainforest Schmainforest |
Originally a member of Ms. Stevens' dancing choir 'Getting Gay With Kids', Millie has since become a minor member of the fourth grade class. She was paired with Clyde for the egg project and was one of the most notorious members of Bebe's clique during the Stupid Spoiled Whore fad.
She has also been known as Jessie or Milly, and her last name was established as Larsen during the battle over the Stick of Truth.