Why Is Captain Underpants Banned? A Factual Content Breakdown
March 9, 2026
Captain Underpants appears on the ALA's most challenged list regularly. The reasons are different from most challenged books. Here's what it actually contains.
Captain Underpants by Dav Pilkey is one of the most unusual entries on the American Library Association's most challenged books list. It is aimed at six-to-ten-year-olds, it is genuinely funny, and the reasons it has been challenged are almost entirely different from the reasons most books on that list draw complaints.
It does not contain sexual content. It is not about LGBTQ identity in any central way. It is about bathroom humor and a hypnotized school principal.
Format: Children's illustrated chapter book series. Intended for ages 6–10.
What ParentsPick Found
Race — present (high confidence) The series has faced criticism for perpetuating racial stereotypes, particularly in a spin-off title that was pulled from publication. The database notes that passive racism has been identified in the series, with at least one book removed by the publisher due to harmful racial content.
LGBTQ identity — present (high confidence) One character, Harold, is depicted as gay or bisexual in the series. This aspect of his identity is presented as a matter of fact — a detail revealed across the series rather than a plot point — not as a source of conflict or drama.
Violence — present (high confidence) The series contains cartoonish, slapstick violence: characters bonk each other, fight robots, encounter supervillains. No serious harm occurs. The tone is comedic throughout.
Why It Has Been Challenged
The challenges to Captain Underpants fall into several categories, which is unusual for a book primarily aimed at early elementary readers.
Bathroom humor. The most commonly cited reason is the book's persistent jokes about toilets, flatulence, and bodily functions. Some parents and educators have objected that this type of humor is inappropriate for school library shelves or that it encourages a disruptive attitude toward reading.
Disrespect for authority. The series' protagonists routinely outwit and embarrass their school principal, who is a figure of ridicule throughout. Some challenges have cited concerns that the books encourage children to disrespect teachers and authority figures.
The racial content of a spin-off. Scholastic voluntarily stopped distribution of The Adventures of Ook and Gluk in 2021 following identification of harmful racial stereotypes, particularly in its depiction of Asian characters. This decision affected the spin-off, not the main Captain Underpants series.
LGBTQ content. More recent challenges have cited the depiction of Harold as gay, particularly in later books that reference his adult life and same-sex partner.
What Makes This List Entry Unusual
Most books near the top of the ALA challenged list draw complaints about sexual content, violence, or LGBTQ themes aimed at older readers. Captain Underpants has sat on challenged lists for years primarily because of bathroom humor — it is one of very few books in ALA records where the principal objection is flatulence jokes.
The series is also one of the most borrowed in library history. Many librarians have noted that it is among the most effective books for reaching reluctant readers — children who won't pick up other books will read Captain Underpants. This has made some of its challenges particularly pointed debates about what libraries are for.
What "Banned" Means Here
Captain Underpants has been removed from some school libraries and restricted in some classroom settings. It is widely available in public libraries, in bookstores, and in most school library systems. Individual districts have made individual decisions.
How to Use This Information
The bathroom humor is real. The cartoonish violence is real. The racial concerns about the spin-off are real. The LGBTQ content in later books is real. Whether any of those things matter for your child at their age is your decision.
For any other title, the ParentsPick app provides a factual content breakdown across nine themes. Search by title or scan the ISBN.
ParentsPick analyzes 9,496 children's and young adult books across 9 content themes. No opinions — just the facts.