Cast 18

1. 

   Brady Noon

   Greg Heffley (voice)

2. 

   Ethan William Childress

   Rowley Jefferson (voice)

3. 

   Hunter Dillon

   Rodrick Heffley (voice)

4. 

   Erica Cerra

   Susan Heffley (voice)

5. 

   Chris Diamantopoulos

   Frank Heffley (voice)

6. 

   Ed Asner

   Grandpa Heffley (voice)

7. 

   Linda Lavin

   Barb (voice)

8. 

   Loretta Devine

   Irene (voice)

9. 

   Priscilla Lopez

   Merle (voice)

10. 

    Nathan Arenas

    Mackie (voice)

11. 

    Albert Tsai

    Drew (voice)

12. 

    Hudson Yang

    Larry (voice)

13. 

    Jimmy Tatro

    Bill (voice)

14. 

    Kimberly Brooks

    News Anchor (voice)

15. Gracen Newton

    Manny (voice)

16. 

    Vincent Tong

    Leland (voice)

17. 

    Veena Sood

    Elevator Lady (voice)

18. 

    Ava Acres

    Additional Voices (voice)

Crew 5