Does he know Nexus Prime? Anyway, great MOC! I like the head, it's distinctly NSSD, which makes it look different and stylish. I also like the bulkiness of his torso that goes surprisingly well with the sleekness and simplicity of his limbs. I can't find any immediate aesthetic flaws, so I'd call him an A+ MOC.
(I'm going to rate in a grade-like fashion from now on! =D)