Kevin Hart

George

Thomas Middleditch

Harold

Ed Helms

Captain Underpants, Mr. Krupp

Nick Kroll

Professor Poopypants

Jordan Peele

Melvin

Kristen Schaal

Edith

DeeDee Rescher

Ms. Ribble

Brian Posehn

Mr. Rected

David Soren

Tommy

Mel Rodriguez

Mr. Fyde

Susan Fitzer

Ms. Dayken

Lynnanne Zager

George's Mom

Tiffany Lauren Bennicke

Sad Girl

James Ryan

Mime

Leslie David Baker

Officer McPiggly

Sugar Lyn Beard

Goody Two-Shoes Girl

Lesley Nicol

Nobel Moderator

Chris Miller

Nobel Audience Member