Principal Peter Prickly is the principal of Third Street School and is generally a cold authority figure. However it is shown that he cares about his charges, showing leniency and kindness on occasion. He has an older brother who crops up from time to time, a rival elementary school principal; despite this similarity, Prickley's brother is significantly older and nastier. As a child he also attended Third Street Elementary, during which time he was referred to as "Petey", a name that is sometimes referenced. His ultimate dream is to be a principal at a middle school - although when offered this opportunity he accepts, but then changes his mind when he sees his replacement, the evil Dr. Slicer, putting the students down. He was shown to be pleased with this decision.

Peter Prickly

Voice:  Wiseguy

Father: Unknown father

Mother: Unknown mother

Older Brother: Peter Prickly

Older Brother (or Younger Brother): Thurgood Prickly

Wife: Mrs Prickly

Friends: Miss Finster, Miss Grotke, TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Randall Weems and Menlo

Enemies: Earwin Lawson, Gelman, Conrad Mundy, Greg Skeens, Sue Bob Murphy, Lazy Kid, Chucko Kowalski, Jocko, Buster, Cheay, Koreo and Kurst the Worst 

Likes: Behaving children and making sure troublemakers behave, particularly Lawson. 

Dislikes: Misbehaving children, students cussing in class, students getting him arrested and toleraing Lawson and his friends' misbehaviour 

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