I've been in a bit of a modeling purgatory, what with various Real Life things happening ;o;, so decided to start off on a sculpt and finish it the same day to get myself going again, quality be damned. Rather pleased with how the little fella came out, though.
It's a Slaugth Warrior Construct. Short version - the Slaugth are maggot-men introduced in Dark Heresy, they're generally evil and get high off human brains. They have a selection of biomechanical Constructs to make up for their lack of numbers. (Worth pointing out - the pic on the collage isn't my own doing, sourced from dark heresy.)
Yeah, my camera work's a little shoddy. If I were to ever amass enough of these guys to use them in a game, they'd probably be counts-as Wracks, with Slaugth acting as counts-as Haemonculi.