Teased by the other monsters for being nice instead of mean, Onster prefers playing with children and helping them with their chores to frightening them.
- ISBN10 0805093753
- ISBN13 9780805093759
- Publish Date 17 July 2012
- Publish Status Active
- Publish Country US
- Imprint St Martin's Press
- Format Hardcover
- Pages 40
- Language English