Chris Diamantopoulos

Frank Heffley (voice)

Donny Lucas

Mr. Humphreys (voice)

Zeno Robinson

Teen with Baseball Hat (voice)

Brady Noon

Greg Heffley (voice)

Ethan William Childress

Rowley Jefferson (voice)

Hunter Dillon

Rodrick Heffley (voice)

Erica Cerra

Susan Heffley (voice)

Gracen Newton

Manny (voice)

Christian Convery

Fregley (voice)

Rick Mischel

Executive Producer

Jessica Mikayla Adams

Braces Girl (voice)

Cyrus Arnold

Teen Driver (voice)

Braxton Baker

Teen with Mullet (voice)

Lossen Chambers

Homeroom Teacher (voice)

Brenda Crichlow

Mrs. Fregley (voice)

Tessa Espinola

Curly-Haired Girl (voice)

Yuvraj Kalsi

Charlie Davies (voice)

Billy Lopez

Mr. Underwood (voice)

Veda Maharaj

Chirag Gupta (voice)

Jaime Maclean

Holly Hills’s Friend (voice)

Robert Moloney

Joshie (voice)

Gig Morton

Random Boy (voice)

Mizinga Mwinga

Wizard (voice)

John Omohundro

Hulking Teen (voice)

Gracyn Shinyei

Girl with Ponytail (voice)

Swinton O. Scott III

Director