The Spooky Tale of Captain Underpants: Hack-a-ween

Nat Faxon

as

Captain Underp...

Jay Gragnani

as

Harold (voice)

Ramone Hamilton

as

George (voice)

Sean Astin

as

Narrator / Mr ...

Dayci Brookshi...

as

Jessica / Dres...

Clancy Brown

as

Mr. Ree (voice)

Jorge Diaz

as

Melvin / Stanl...

Peter Hastings

as

Comic Narrator...

Evan Kishiyama

as

Steve "Gooch" ...

David Koechner

as

Mr. Meaner (vo...

Erica Luttrell

as

Erica / George...

Patty Mattson

as

Miss Anthrope ...

Brennan Murray

as

Bo Hweemuth (v...

Kevin Michael ...

as

Diddlysaurus /...

Mindy Sterling

as

Melvin's Mom (...

Stephen Tobolo...

as

Creepy Rattlec...

Kari Wahlgren

as

Mayor Hoppy Mc...