Nice detailing. The body shape actually puts me a little in mind of Cybertron Metroplex. Some of the body parts are a little tricky to see if they're in the foreground or background, though - maybe a tiny bit of thicker linework around the major volumes?
Dang! He looks sick when hes like that bulky made. Love it! But hey, doesn't he actually turn in2 a 3-transformation forms or another guy does? I kinda remember some Transformer (TF) that has a 3-transformation robot form. Like a jet form, robot form, and I may think a ground vehicle form but I maybe wrong though. But nicely done btw I love it!