Diary of a Wimpy Kid: The Last Straw Cast

Greg Heffley is a middle-school student who often faces awkward social situations and tries to improve his standing with his peers.

Frank Heffley is Greg's father who works to guide his sons and is concerned with family rules and appearances.

Susan Heffley is Greg's mother who organizes family activities and looks after the household.

Rodrick Heffley is Greg's older brother who plays in a rock band and often teases or annoys Greg.

Rowley Jefferson is Greg's best friend who is cheerful, well-meaning, and sometimes naive.

Manny Heffley is Greg's youngest brother who is often pampered and can cause mischief around the house.

Troopmaster Barrett is a scout leader who runs troop activities and enforces rules for the scouts.