The X-Men Pop-Up by Inc Staff Marvel Characters, published by Candlewick Press in 2007, is a juvenile fiction book featuring Marvel characters in a pop-up format. The 16-page book, with illustrations by the author, is part of the Marvel True Believers Series and combines elements of humor, fantasy, and superheroes. This unique pop-up book is perfect for young readers who enjoy comics and graphic novels, offering a visually engaging and entertaining experience.