If you are looking for inspirational 3d Robot designs ,  here is the list of  35 Amazing Examples of Modern 3D Robots
Concept Robot – Created by Billy Cheng

Cockroach ‘07 – 3d Artist: Dennis Hoppe

Urz-t  by Dorn

Robots – Created by Mihail Popov

Robot Hopper – Created by Tristan Bethe

Scorbot – CG Creation by Saeed Hasan Zadeh

Robot by [...]