David Bar Katz is the author of many DC Super Heroes books including My First Superman Book, My First Batman Book, My First Wonder Woman Book, ABC 123, Colors and Shapes, Opposites, and Busy Bodies. He is a screenwriter and playwright. His award-winning play, The History of Invulnerability, is about Superman creators Jerry Siegel and Joe Schuster. He lives in New York City with his wife and four sons, and a basement full of comic books.

Morris Katz is the author of many successful children's books including My First Book of Superpowers, and Even Super Heroes Sleep.

Julie Merberg is the author of many bestselling children's books including My First Book of Famous Jews, It's a Mitzvah, NO! My First Book of Protest, and My First Book of Feminism (for Boys).