"Hopper" was modeled and animated as an experiment after being inspired by Pixar's "A Bug's Life". Even though Hopper is a blatant rip-off from the movie, he was modeled by hand and has over 45 extremely complex hand painted textures, including Diffuse, Specular, Bump, Glossiness, and Opacity for most.
"Hopper" is completely rigged with a full inverse kinematic bone system, expression solvers, and constraints. (He even has two sets of eyelids.)