This guy looks more like a robot than human, but then again, having bionic parts looks cool as hell. I know it shouldn't be, but isn't it having a powerfist AND a chainsword a bit... overkill? I love it though
You drawing are pretty cool, but from what I have seen and read about space marines, it looks like overall the marine should be larger(not taller, but more stockier). I still like this drawing though, nice work.