8.7/10
22

Captain Underpants and the Sickening Fumes of Smartsy Fartsy 

Watch Now

From $1.99 on Prime Video

To steal Mr. Krupp's rule book from a tightly locked safe, the boys cook up a super-intelligent gas cloud who winds up turning against them.

Writers:

Mark Banker (head writer), Sindy Boveda-Spackman (staff writer) | 1 more credit »

Photos

Add Image Add an image

Do you have any images for this title?

Edit

Cast

Episode cast overview:
Nat Faxon ... Captain Underpants / Mr. Krupp (voice)
Jay Gragnani ... Harold (voice)
Ramone Hamilton ... George (voice)
Sean Astin ... Narrator (voice)
Trevor Devall ... Smartsy Fartsy (voice)
Jorge Diaz ... Melvin / Dr. Vil Endenemys (voice)
Peter Hastings ... Comic Narrator (voice)
Evan Kishiyama ... Steve 'Gooch' Yamaguchi (voice)
David Koechner ... Mr. Meaner (voice)
Erica Luttrell ... Erica (voice)
Patty Mattson ... Miss Anthrope / Helen Copter (voice)
Edit

Storyline

To steal Mr. Krupp's rule book from a tightly locked safe, the boys cook up a super-intelligent gas cloud who winds up turning against them.

Plot Summary | Add Synopsis

Certificate:

TV-Y7
Edit

Details

Release Date:

13 July 2018 (USA) See more »

Company Credits

Production Co:

Titmouse See more »
Show more on IMDbPro »

Technical Specs

Runtime:

See full technical specs »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Contribute to This Page

Free Movies and TV Shows You Can Watch Now

On IMDb TV, you can catch Hollywood hits and popular TV series at no cost. Select any poster below to play the movie, totally free!

Browse free movies and TV series

Stream Trending Movies With Prime Video

Enjoy a night in with these popular movies available to stream now with Prime Video.

Start your free trial



Recently Viewed