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FD67BFC3-2779-4739-B540-AD26D9AA1E16 This article is a stub and would benefit greatly if it contained more information. Please help the Captain Underpants Wiki by expanding it.
Smart Earth Residents

Smart Earth Residents were people who lived on Smart Earth before it exploded due to a university experiment gone wrong. Their civillization is very similar to our planet, Earth. Except they're smart. They only appear in Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot.

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