Captain Underpants: The First Epic Movie (2017) - Cast

Jordan Peele as Melvin
Nick Kroll as Professor Poopypants
Kevin Hart as George Beard
Kristen Schaal as Edith (voice)
Ed Helms as Mr. Krupp / Captain Underpants
Thomas Middleditch as Harold Hutchins
Lesley Nicol as Nobel Prize Moderator (voice)