| Year | Title | Pages |
|---|---|---|
| 2012 | The Color Monster | 40 |
| 2018 | The Color Monster Goes to School | 40 |
| 2024 | Dr. Color Monster and the Emotions Toolkit | 56 |
| The Color Monster: A Pop-Up Book of Feelings | 20 |
Anna Llenas is the author and illustrator of several books for children, including The Color Monster. She lives in Barcelona, Spain, and can be found online at annallenas.com.