Greg Heffley is a scrawny but ambitious kid with an active imagination and big plans to be rich and famous – he just has to survive middle school first.

• Greg Heffley (voice): Brady Noon
• Rowley Jefferson (voice): Ethan William Childress
• Rodrick Heffley (voice): Hunter Dillon
• Susan Heffley (voice): Erica Cerra
• Frank Heffley (voice): Chris Diamantopoulos
• Manny (voice): Gracen Newton
• Fregley (voice): Christian Convery
• Braces Girl (voice): Jessica Mikayla Adams
• Teen Driver (voice): Cyrus Arnold
• Teen with Mullet (voice): Braxton Baker
• Homeroom Teacher (voice): Lossen Chambers
• Mrs. Fregley (voice): Brenda Crichlow
• Curly-Haired Girl (voice): Tessa Espinola
• Charles Davies (voice): Yuvraj Singh
• Mr. Underwood (voice): Billy Lopez
• Mr. Humphreys (voice): Donny Lucas
• Chirag Gupta (voice): Veda Maharaj
• Holly Hill’s friend (voice): Jaime Maclean

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• Producer: Brad Simpson
• Original Music Composer: John Paesano
• Producer: Nina Jacobson
• Director: Swinton O. Scott III
• Editor: Sylvain Blais
• Sound Re-Recording Mixer: Michael Huang
• Character Designer: Jeff Kinney
• Sound Re-Recording Mixer: Kenneth L. Johnson
• Casting: Micah Dahlberg
• Sound Designer: Sean Evans
• Animation Supervisor: Trent Noble

Credits: TheMovieDb.