Bradley was a boy in a preschool who terrorized Greg every chance he got. Susan wrote a story about him called "Bad Bradley" when he moved away. However the story had Bradley acting way worse than he actually did. Susan Heffley was probably going to publish the book, but Bradley moved back in spring making Susan to scrap the idea. But she used it to teach Manny about preschool. This backfired because it made him scared of other kids his age, including Wesley Stringer.
- Diary of a Wimpy Kid: The Third Wheel (First and only appearance)