Dav Pilkey
David "Dav" Pilkey (born March 4, 1966), also known by the pseudonym Sue Denim, is a popular American author and illustrator of children's literature. Dav Pilkey is best known as the author and illustrator of the Captain Underpants book series. He also uses the pen names George Beard and Harold Hutchins. He lives near Seattle, Washington with his wife, Sayuri.