The Spooky Tale of Captain Underpants Hack-a-ween
The Spooky Tale of Captain Underpants Hack-a-ween is not streaming on a US subscription app right now, as of October 6, 2026.
Where are all of the Halloween decorations?
When Melvin tries to cancel Halloween, clever best friends Harold and George create their own spooky holiday -- and it's a huge success!
Where to watch
Not currently available for streaming in the US.
9 apps, one package.
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Cast
Nat Faxon
Captain Underpants / Mr. Krupp (voice)
Jay Gragnani
Harold (voice)
Ramone Hamilton
George (voice)
Sean Astin
Narrator / Mr Gigglenose (voice)
Dayci Brookshire
Jessica / Dressy (voice)
Clancy Brown
Mr. Ree (voice)
Jorge Diaz
Melvin / Stanley Peet / Melvin's Dad (voice)
Peter Hastings
Comic Narrator (voice)
