The Really Cool Adventures Of Captain Underpants

The Really Cool Adventures Of Captain Underpants (not to be confused with the comic book of the same name) is an extremely rare book created by Dav Pilkey and self-published in 1989. It is a prototype of The Adventures of Captain Underpants. 50% of its profits were donated to Goodwill and the United Way. Only one copy still remains in existence and it is unknown where it is. There is a chance this cover could be false.

The Epic Tales of Captain Underpants TV: The Maniacal Mischief of the Marauding Monsters by Meredith Rusu

The Adventures of Captain Underpants (Captain Underpants #1) (1): Pilkey, Dav, Pilkey, Dav: 9781338312676: : Books

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Captain Underpants Ser.: The Adventures of Captain Underpants by Dav Pilkey

Scholastic Inc. Captain Underpants TV: George and Harold's Epic Comix Collection - Linden Tree Books, Los Altos, CA

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Captain Underpants: The First Epic Movie (DVD, 2017) VERY GOOD 191329060797

The Adventures of CAPTAiN UNDERPANTS CHAP 1-5 - Vídeo Dailymotion

Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 2: The Revenge of the Ridiculous Robo-Boogers (Captain Underpants #7) (CD-Audio)

Captain Underpants: The First Epic Movie (4K Ultra HD, Blu-ray, & Digital HD) - digitalchumps