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