An American author and illustrator, David Murray, better known by his screen name Dav Pikey is best known for being the writer and illustrator of the children’s book series Captain Underpants and Dumb Bunnies. The former, which as several books under the series including The Adventures of Captain Underpants is made into a film, which is titled The Adventures of Captain Underpants: The First Epic Movie (2017), which is directed by David Soren.