John Heffley is the cousin of Frank Heffley and uncle to his children who appeared only in The Ugly Truth. John used to be part of The Bachelors but he got married during Spring time around Greg 's seventh grade. Greg believes that he may have got married just so he wouldn't sleep in the room with the rest of the Bachelor members.
Appearances
- Diary of a Wimpy Kid: The Ugly Truth (first appearance)