Seeing Rudy face off against the denizens of the Mushroom Kingdom would be really awesome! I wonder who would be the first to be made aware of his presence. Like 3rd Wario Brother said, Plot Armor: The Character would probably make short work of Rudy, but I'd love to see how other characters would fare against him, hero and villain alike? Taking it a step further, if he ended up conquering the Mushroom Kingdom, would he try to also take over the other dimensions hidden in it, like the Shake Dimension? I've often wondered how Rudy winning against Wario would play out.