Note: I own nothing. Rights go to Dreamworks animation and the author and actors.


Captain Underpants / Mr krepp. = Ed Helms

Gerorge Beard = Kevin Hart.

Harold Hutchins = Thomas Middleditch

Professor Poopypants = Nick Kroll

Edith = Kristen Schaal

Melvin = Jordan Peele.

Extras:
David Soren, De De Rescher, Lesley Nicol, Chris Miller, Brian Posehn, Lynnanne Zager.

All cast lised at the end of the film.
Unknow extra :

Brianni Walker = Girl ( not in end credit)

Enjoy! All unaddressed will be in another list.