Hall Monitors apprehending an operative.
Hall Monitors were Gregory Elementary School's President Jimmy McNixon's henchmen. At first they seemed like nice hall monitors, but when Jimmy turned evil and became part of the Teen Ninjas, he was still in charge of the school, and the Hall Monitors obeyed him, as well as Nerd Rolls. In Operation: S.C.H.O.O.L., they were seen fighting Kids Next Door operatives and school children alongside Nerd Rolls and Teen Ninjas.