DogPoo Petuski is a student at South Park Elementary that is always seen covered in dirt. He has been around since the start of the series but only acts as a background character in many scenes. He has disappeared from the classroom is recent episodes but can still be found in crowd and hallway scenes. He was known as Dirt in storyboards until his speaking roles. His last name was long speculated to be "Brasfield" by fans, but it was revealed to be "Petuski" in "T.M.I.".