One has wacky tooth structures. And, they are built like small gorillas.
I never saw more than a bit of these movies, as it doesn't look good or have a story I give a shit about. The robots are so fucking intricate looking, but are always kind of blurry so you can't really appreciate all the complicated parts of them. https://www.youtube.com/watch?v=v_H-pZJAWVQ