The Necrons of Warhammer 40,000 are meant to be both very alien and very advanced, so I made some alterations to their official design to that end.
The hands, on slighty exaggerated arms, are deliberately both large and thin-fingered to add to the creepiness factor. Instead of slab-like feet I did ones with a somewhat skeletal structure and a set of toes. All the larger, very mechanical-looking hinge joints of the limbs were replaced with spherical ones. The limbs themselves are sleek and curved rather than cylindrical, rather than a piston neck there's one of muscle-like cables and so on. Primarily, I sought to make the thing look less like a typical, all-too-humanlike robot and more like a mechanical alien creature. Still wanted to give the lower legs some pistons though, as a classic Terminator-like detail, and so those are the only visible "low-tech" feature in the body now.
Usually these guys are portrayed as silver with green glow, of course, but I went with an alternative color scheme from a different faction to mix things up further.
I had the head sitting in the mess of my files for at least 9 months, so it's good to finally give it a body.