In this interactive special, Harold and George need your decision-making skills to stop Krupp from blowing their beloved treehouse to smithereens.
Captain Underpants / Mr. Krupp / Buffalobe (voice)
Nat Faxon
Harold Hutchins (voice)
Jay Gragnani
George Beard / Young Mr. Cleveland (voice)
Ramone Hamilton
Narrator / Putter Mulligan (voice)
Sean Astin
Jessica / Dressy / Smartaconda (voice)
Dayci Brookshire
Melvin / Stanley Peet (voice)
Jorge Diaz
Benjamin Franklin (voice)
Todd Grimes
Comic Narrator / Marlin (voice)
Peter Hastings
Steve "Gooch" Yamaguchi (voice)
Evan Kishiyama
Mr. Meaner (voice)
David Koechner
Mr. Cleveland / Viper Chai (voice)
Phil LaMarr
Erica (voice)
Erica Luttrell
Miss Anthrope (voice)
Patty Mattson
Bo Hweemuth (voice)
Brennan Murray
Lee Dingman / Hugo Mouthingwad (voice)
Nolan North