Dog Man is a children's graphic novel series by American author and illustrator Dav Pilkey. A spinoff and story within a story of Pilkey's Captain Underpants series, Dog Man revolves around the adventures of the titular character, a half-man, half-dog hybrid who works as a police officer. As of 2025, there are 13 books in the series. The latest book, Dog Man: Big Jim Begins, was released on December 3, 2024. A 14th book titled Dog Man: Big Jim Believes was announced and set to release in Fall 2025. Dog Man the Movie was released on January 31, 2025. Within the universe of Captain Underpants, Dog Man was the first comic book character created by George Beard and Harold Hutchins as kindergarteners. A police officer named Knight and his dog Greg are targeted by Petey, "the world's most evilest cat", and injured in an explosion. At the hospital, the doctors realize they cannot save both of them, but a nurse suggests sewing Greg's head onto Knight's body. The resulting hybrid, Dog Man, has Knight's crime-fighting skills, but Greg's personality. As such, he exhibits typical canine traits such as licking people and being afraid of vacuum cleaners. One size fits most children. This Dog Man dress-up costume set comes with the Dog Man hat, as well as a self-adhesive Dog Man badge. Whether it’s for Halloween, themed parties, or any other reason to dress up, this Kids Dog Man costume is a winner. Complete the look by adding your kiddo's own teal shirt to become the real Dog Man! Other graphic novel, Dav Pilkey costumes and accessories are sold separately on our page – subject to availability.