The point is they wouldn't have to make a completely new model for Kirby. They could just flatten his current model and change the textures. Anyway here's video containing many examples of the effect: http://youtube.com/watch?v=cSHi1t7yXdIsuperbank said:WHUT.
It's not like the paper effect though, right? They're just normal looking and when you turn the camera is when you see the flatness?