Kevin Hart George Beard (voice)
Jordan Peele Melvin (voice)
Ed Helms Mr. Krupp / Captain Underpants (voice)
Kristen Schaal Edith (voice)
Leslie David Baker Officer McPiggly (voice)
Nick Kroll Professor Poopypants (voice)
Walt Dohrn Thanks
Conrad Vernon Thanks
Mel Rodriguez Mr. Fyde (voice)
Lesley Nicol Nobel Moderator (voice)
Brian Posehn Mr. Rected (voice)
'Weird Al' Yankovic Theme Song Performance
Thomas Middleditch Harold Hutchins (voice)
Derek Drymon Storyboard Artist
Sugar Lyn Beard Goodie Two-Shoes Girl (voice)
Nicholas Stoller Screenplay
Mike Mitchell Thanks
Michael McCullers Thanks
Tom McGrath Thanks
Chris Miller Nobel Audience Member (voice)
Robert Porter Additional Storyboarding
David Soren Tommy (voice), Additional Writing, Director
Ashley-Martin Dunn VFX Artist
Rob Letterman Executive Producer
Jeffrey Katzenberg Thanks
James Ryan Mime (voice), Thanks
Dav Pilkey Novel, Executive Producer
Chad Hammes Thanks
Jeanne McCarthy Casting
Catherine Harper Foley
James Thatcher Musician
Kevin Harkey Additional Storyboarding
Steve Mair Musician
Hamish Grieve Head of Story
Lynnanne Zager George's Mom (voice)
Sean Bishop Storyboard Artist
Joe Pitt Additional Storyboarding
Theodore Shapiro Original Music Composer
Leslee Feldman Casting
Michelle Mendenhall Additional Editing
Jeff Sawyer Sound Effects Editor
DeeDee Rescher Ms. Ribble (voice)
Patrick Cicero Foley Editor
Christi Soper Hilt Casting
Raymond Zibach Thanks
Mollie Gamo Casting Associate
Damon O'Beirne Head of Layout, Cinematography
Mark Graham Conductor
Nicole Abellera Hallman Casting
Floriane Marchix Visual Development
John Ashton Thomas Orchestrator
Brian Hopkins Associate Editor
Mette Tange Animation
Andrew James Ross Storyboard Artist
Vadim Bazhanov Storyboard Artist
Michael Babcock Sound Re-Recording Mixer, Sound Designer, Supervising Sound Editor
Mark Swift Producer
Susan Fitzer Additional Editing
Mireille Soria Producer
David Yanover Post-Production Manager
Chris Fogel Scoring Mixer
Robert Koo Additional Storyboarding
Thomas S. Drescher Music Editor
Mary Melendez Production Supervisor
Matthew Landon Editor
Will Erokan First Assistant Editor
Chris Diebold Sound Effects Editor
Nate Wragg Production Design
Matt Chamberlain Musician
Todd Kurosawa Storyboard Artist
Perry Maple Visual Development
Kevin Connolly Musician