Clancy Q. Sleepyjeans (voiced by David Koechner) is ostensibly the de facto vice principal of Polyneaux Middle School. Whenever Principal Madman is on truancy patrol, Clancy is placed in charge of the school. His main duties are being the head of the Custodial Engineering department, but is often seen taking breaks. One time he accidentally activated a Dust Buddy vacuum cleaner, which Robot Jones took to class with him. Clancy became annoyed and accused Robot Jones of stealing the vacuum cleaner while he was on break. Otherwise Clancy rarely gets irritated. Robot Jones, did end up stealing one of Clancy's hats.