Season 6 • Episode 52
LatestJohnny and Dukey are sucked into a history book.
Young Johnny is gung-ho and full of courage. Johnny's brainiac twin sisters, Susan and Mary, use Johnny as their guinea pig for their outrageous scientific experiments. If they can dream it up, Johnny will do it; as long as his genetically engineered super dog, Dukey, can come along.
Writing
Scott Fellows' rapid-fire gags before he created Big Time Rush
Creator
Scott Fellows
Trivia, insights & behind the scenes
The show originally aired on Kids' WB, then Cartoon Network, then Netflix for its final season—rare for a Canadian animated series to hop networks this aggressively.
Johnny Test became a meme punching bag in the 2010s, with the 'whoa, didn't see that coming' whipcrack sound effect becoming shorthand for lazy cartoon writing. The 2021 Netflix reboot tried to address this and lasted one season.
CA
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