Conversation so far:
what is the main idea of captain underpants
The Captain Underpants children's novel series revolves around Captain Underpants, a superhero from two fourth-graders' homemade comic books, who becomes real.
when was the captain underpants first published
The first novel in the Captain Underpants series, The Adventures of Captain Underpants was published on September 1, 1997.

Question: Who authored the series?
Self-contained rewrite: Who is the author of the Captain Underpants series?