MikuMikuDance (MMD) is a free tool for animating 3D character models, mainly used to choreograph Vocaloid dance numbers. It's recently been used to re-animated the Attack on Titan opening. Now, you might be a bit tired of all the Attack spoofs, but when the spoof is this weird, there's alway room for one more.
Bonus Attack On Christopher Walken
8 bit Version