Evil robot character concepts

 My original concepts which I presented to my group. We liked number 8 best. I tried rendering him a couple of times but just wasn't sure what to do for his shape/form so I couldn't understand the perspective.

So I went for number 2 instead and blocked out his colours and put basic gradients on him. He's inspired by Wheatly from Portal2.

After shading him I presented him to Chris who suggested I add bolts and show the "T lines" on the edge of him to suggest symmetry. 

This is the final result. He's very clean, clinical feeling which adds to his evil vibe I feel. His red light eye and lines also show this. I already have a few ideas on animating him.