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Bling-Bling Boy

Eugene Hamilton, AKA Bling-Bling Boy, is an evil genius. He'll stop at nothing to make Susan Test his girlfriend, even if it means destroying Porkbelly... as long as his Mom doesn't find out, that is!
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Susan & Mary

Susan and Mary are the only 13-year-olds in the doctorate program at the Mega Institute of Technology. Always on the verge of a major scientific breakthrough, they use Johnny as a reliable guinea pig.
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Dukey

Dukey is a genetically altered canine that not only fetches you the paper, but reads it to you as well! He's Johnny's best friend and tries to provide him with an often-ignored voice of reason.
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Johnny Test

Johnny's an 11-year-old kid leading a pretty average life. Average, that is, except for his twin super-genius inventor sisters, talking dog sidekick, and nonstop thrill-ride adventures!
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Johnny Test Characters  

Learn more about all the Johnny Test characters on Cartoon Network. Johnny Test is always ready to test any crazy experiments his genius sisters Mary and Susan come up with. Joined by Dukey, who's both a loyal dog and best friend, Johnny never knows what kind of strange powers or weird side effects will happen when he becomes a test subject in his sisters' laboratory. Hopefully, his arch rival Bling-Bling Boy doesn't show up.

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