Kevin Hart
George Beard (voice)
Acting
Thomas Middleditch
Harold Hutchins (voice)
Acting
Ed Helms
Mr. Krupp / Captain Underpants (voice)
Acting
Nick Kroll
Professor Poopypants (voice)
Acting
Jordan Peele
Melvin (voice)
Acting
Kristen Schaal
Edith (voice)
Acting
DeeDee Rescher
Ms. Ribble (voice)
Acting
Brian Posehn
Mr. Rected (voice)
Acting
David Soren
Tommy (voice)
Acting
Mel Rodriguez
Mr. Fyde (voice)
Acting
Susan Fitzker
Ms. Dayken (voice)
Acting
Lynnanne Zager
George's Mom (voice)
Acting
Tiffany Lauren Bennicke
Sad Girl (voice)
Acting
James Ryan
Mime (voice)
Editing
Leslie David Baker
Officer McPiggly (voice)
Acting
Sugar Lyn Beard
Goodie Two-Shoes Girl (voice)
Acting
Lesley Nicol
Nobel Moderator (voice)
Acting
Chris Miller
Nobel Audience Member (voice)
Acting
Coco Soren
Balloon Girl (voice)
Acting