Have you ever imagined what Kung Fu Man would look like if it was tiny, had wonky transparency and looked like a Pokémon? No? Well, that's exactly what this character is, albeit with hitboxes that imply it's still human.
Riolu is a spriteswap of Kung Fu Man, much like Hugespongebob98's other characters. The hitboxes remain intact for the most part, though there are some animations where the hitboxes were resized to match Riolu's size, but only for a frame or two.