Now THAT'S an example of how to have Live-action Humans interact with STYLIZED CGI Characters(Instead of the More Oftenly-used PHOTO-REALISTIC CGI)
It probably would've been too easy. Just draw Chowder's eyes and hat on Kirby and you're done. Besides, think about it, Kirby in interpreted in sprites, 3D models, yarn, clay, and paint in his games. A paper cutout Kirby in probably the next step.