Great use of blended greys. I likethe sunken head and eyes - the hands are cool too, very articulate. Also, your well placed hinges work well for the purposes of stability and posing. A really nice piece of work. check out my UNIMECH industries folder for my mech designs sing a similar hand configuration. great MOC. ;)
Big, bad and grey.. it can only be a golem. But you missed something here.. colors are good but the chest? May too blocky. Perhaps new version without stud on top? -Q