Mr. Mandrill (also Known As Maurice Mandrill) who is the school's spiritual guidance counselor, the band director (being an expert on bongo drums) and an advisor to the student court. A stereotypical portrayal of "touchy-feely" guidance counselors, an aged hippy and ex-hobo. Voiced by Maurice LaMarche.
- Interestingly, he has the same name as his voice actor, Maurice LaMarche.
- He likes collecting glass animal figurines.
- He is currently dating Windsor's mother.