Jeffrey Laffley is a goon of Bryce Anderson, who has him do silly things in front of the girls to gain popularity. Greg thinks that the only reason Bryce keeps him around is for comic relief. He was voted the Class Clown in Hard Luck. Greg attempted using Fregley in the same manner that Bryce was using Jeffrey.
- Diary of a Wimpy Kid: Hard Luck (First appearance)
- Diary of an Awesome Friendly Kid: Rowley Jefferson's Journal (Brief appearance)