Michael Dahl is the prolific author of the bestselling Goodnight, Baseball picture book and more than 200 other books for children and young adults. He has won the Association of Educational Publishers Distinguished Achievement Award three times for his nonfiction, a Teachers' Choice Award from Learning Magazine, and a Seal of Excellence from the Creative Child Awards. Dahl currently lives in Minnesota.

For more than ten years, Oriol Vidal has worked as an illustrator and storyboard artist with agencies, publishers, and animation companies, developing children's books, character designs, concept art, and storyboards. Vidal was born in Barcelona, Spain, where he currently resides.