"Set me up Shady Joe! I'm feeling lucky" — Isabella placing a bet with Shady Joe[source]
Shady Joe is a carnival worker who works near downtown Danville.
Skills and abilities
Shady Joe seems to be very good at cheating people out of their money without them figuring it out. For example, even the kids with the best aim can't knock over the bottles in Joe's game because the bottles are taped to the back of the wall. Later with, the Penguin Man (Doofenshmirtz), Shady Joe makes it sound real, even though it's really only Doofenshmirtz wearing the head of a penguin costume with ripped out eyes. His ability to trick people this way might be how he earned the name "Shady" Joe.