A new school year, his brother Rodrick teases him over and over and over and over again. Will Greg manage to get along with him? Or will a secret ruin everything?
Brady Noon Greg Heffley (voice)
Ethan William Childress Rowley Jefferson (voice)
Hunter Dillon Rodrick Heffley (voice)
Erica Cerra Susan Heffley (voice)
Chris Diamantopoulos Frank Heffley (voice)
Ed Asner Grandpa Heffley (voice)
Linda Lavin Barb (voice)
Loretta Devine Irene (voice)
Priscilla Lopez Merle (voice)
Nathan Arenas Mackie (voice)
Albert Tsai Drew (voice)
Hudson Yang Larry (voice)
Jimmy Tatro Bill (voice)
Kimberly Brooks News Anchor (voice)
Gracen Newton Manny (voice)
Vincent Tong Leland (voice)
Veena Sood Elevator Lady (voice)
Ava Acres Additional Voices (voice)
Sky Alexis Additional Voices (voice)
Noah Kaye Bentley Additional Voices (voice)
Asher Bishop Additional Voices (voice)
Jen Cain Additional Voices (voice)
Tristan Allerick Chen Additional Voices (voice)
Juliet Donenfeld Additional Voices (voice)
Marley Garner Additional Voices (voice)
Johnny Gidcomb Additional Voices (voice)
Lex Lang Additional Voices (voice)
Michael Leone Additional Voices (voice)
Ava Mae Leslie Additional Voices (voice)
Susan Leslie Additional Voices (voice)
Matt Nolan Additional Voices (voice)
Andre Robinson Additional Voices (voice)
Benjamin Valic Additional Voices (voice)
Paul-Mikél Williams Additional Voices (voice)
ViviAnn Yee Additional Voices (voice)
Ruth Zalduondo Additional Voices (voice)