Johnny Test
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.

Season 4 · Episode 20 ·
Johnny Degrees Below Zero
Johnny creates a magnetic force field on the Earth which makes Porkbelly the new north pole.
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Episode 20 of season 4 of Johnny Test: “Johnny Degrees Below Zero”. Aired 2010-01-07. Watch it online free on ZapFlix.