Olaf is a brother of Snoopy. He was neglected as a child and his parents called him "the fat and ugly one". However since he grew up he was never tormented as much. However he wears a bag over his head sometimes because he can suffer from self esteem issues
- His favorite book is Joe Bunny
- He once drank too much when he visited Snoopy's house. He broke tables and vases, but then Snoopy kicked him out. He now lives on a farm in Alaska.