Aaron D. Harris

Greg Heffley (voice)

Chris Diamantopoulos

Frank Heffley (voice)

Erica Cerra

Susan Heffley (voice)

Hunter Dillon

Rodrick Heffley (voice)

Jude Zarzaur

Rowley Jefferson (voice)

Gracen Newton

Manny Heffley (voice)

Jill Basey

Mrs. Canfield (voice)

Bashir Salahuddin

Mr. Warren (voice)

William Stanford Davis

Troopmaster Barrett (voice)

Jabari Banks

Lenwood (voice)

Perry Brown

Priest (voice)

Grey DeLisle

Organ Lady (voice)

Dashiell McGaha-Schletter

Ricky Fisher (voice)

Punam Patel

Mrs. Winsky (voice)

Randy Pearlstein

Mr. Jefferson (voice)

Talon Warburton

Narrator (voice)

Sanjay Rao

Mr. Gupta (voice)

Lila Bahng

Patty (voice)

Annika Erickson

Kindergarten Mom (voice)

Abhiram Gulati

Chirag (voice)

Kyrie Neriah Kennedy

Weston (voice)

Eddie Martinez

Gruff Neighbor (voice)

Livingston McConaughey

Student (voice)

Ellis Myers

Fregley (voice)

Tunde Oyeneyin

Fitness Instructor (voice)

Enzo Valdez

Mikey (voice)

Luther Vue

Oversized 4 Year Old (voice)

Jen Cain

Additional Voices (voice)

Sawyer Cole

Additional Voices (voice)

Camden Coley

Additional Voices (voice)

Matt Danner

Additional Voices (voice)

Arya Dormiani

Additional Voices (voice)

Damon Fung

Additional Voices (voice)

Anders Garrett

Additional Voices (voice)

Johnny Gidcomb

Additional Voices (voice)

Sawyer Holt

Additional Voices (voice)

Lex Lang

Additional Voices (voice)

Susan Leslie

Additional Voices (voice)

Hope Levy

Additional Voices (voice)

Ashley London

Additional Voices (voice)

Kyrie McAlpin

Additional Voices (voice)

Melrose

Additional Voices (voice)

Matt Nolan

Additional Voices (voice)

Shiloh Phillips

Additional Voices (voice)

Ayush Rajmachikar

Additional Voices (voice)

Miabella Rose

Additional Voices (voice)

Kendrick Owen White

Additional Voices (voice)