The Kids at the Pre-Criminal School are a group of seven toddlers (number seven is missing on the picture at the right) who attend the pre-criminal kindergarten. In fact, their school is a playground in a small prison.
They serve as the main antagonists of the episode "Ooh That Smell."
They are a dangerous group of small children and one extremely big one who still wears diapers. They steal and rob from people like The Bank of Bay Area, The Elderly Woman and Dwight Turnbull.
They were released from the prison by Robotboy who wanted to smell like a real boy. The leader of the group (the angry, shirtless toddler with orange hair on the picture right) gives him his diapers. They cause misery around The Bay Area.
When they steal Tommy's birthday cake, he decides to run after them. The kids are with more and stronger and they overpower him. When they want to throw Tommy off a climbing frame, Robotboy comes to save him.
Robotboy brings the kids back to their Pre-Criminal school and isn't annoyed by their crying.