Sarah Peterson
| Gender | Female |
| Age | 5 |
| Hair Color | Orange |
| Occupation | Student |
| Grade | Kindergarten |
| Voiced by | Milan Agnone |
| First Appearance | Lil' Crime Stoppers |
Sarah Peterson's only appearance was in the Season Seven episode, "Lil' Crime Stoppers". In that episode, she seeks help from the boys, who were playing detective, to find her lost doll. They find the doll in Fosse's house, where Bill and Fosse are playing with it. The boys go in and retrieve the doll, and return it to Sarah later. Her mom is so appreciative she advises the Park County Police department of their heroism.