As Art Director, I was responsible for the character design of the Robot. I tried out a few different head shapes and features, but we came to the decision that we wanted our robot to be heavily influenced by the Iron Giant, complete with an austere look and blocky, hinged jaw.
When designing the rest of his body, it was important for me to consider the context of the robot’s creation; it had to be clear from the design that this robot had been roughly put together with whatever scraps of metal this lonely old man could get his hands on, and for this reason we went with simple cylindrical style arms and legs. We were initially going to have ball and socket joints, but decided on hinge joints after our Director pointed out that ball and socket joints are usually biological and wouldn’t theorectically work in a steamwork robot – or not the crudely built, not-so-cutting-edge kind of one that we were going for!
Rachel also around the same time found a cool robot rigging tutorial whereby a standard rig drives an additional underneath rig which rotates the individual hinge parts in a realistic and mechically correct way that would be seen in a real-life, physical hinge joint (See video here: http://youtu.be/KkWEt_fRlxo). So began the designing of technically possible joints for our robot! During this I had to bear in mind that the robot would need every rotation in his joints that a human does, which was a challenge when it came to the hip joint where we would need rotation in all three x, y and z axis.
And voilà, our final robot design:





