The character is a satire of extreme social justice activism and "PC culture." If you were searching for a specific "perv principal," this might be a common mishearing or autocorrect of PC Principal
is introduced as the new head of South Park Elementary after Principal Victoria is fired for a controversial incident involving a student Searching for- perv principal in-
If you are looking for a different "Principal" from a movie, book, or news story, could you provide a bit more context? I'd be happy to help you track down the specific reference. The character is a satire of extreme social