Mr. Krupp

Benjamin "Benny" Krupp, better known as Mr. Krupp, is the principal of Jerome Horwitz Elementary School. He is the titular deuteragonist of the franchise, though his alter ego Captain Underpants is the titular protagonist of the Captain Underpants franchise. He has a long history with two fourth grade students named George and Harold due to their constant pranks, wisecracks, and comic books. Mr. Krupp's alter ego is Captain Underpants, (who is nonexistent in the books since book 12) which he is totally unaware of. And Is Very Rude and hate Fun