Captain Underpants by Dav Pilkey

Captain Underpants by Dav Pilkey is a series of children's books about Captain Underpants, a superhero who fights crime while wearing nothing but his underwear. The books are written in a humorously simplistic style, and they are often illustrated with crude drawings.

Captain Underpants is an immensely popular series, and it has been praised for its humor and for its positive messages about friendship and teamwork.

If you are looking for a fun and entertaining series for your child, then Captain Underpants is definitely worth checking out.