Here's a character I just wrapped up. He was originally extrapolated from the buggy I posted last week (he's the scale/thumbnail man standing beside it). I was quite inspired by District 9 last week, so don't be surprised to see some District 9-ish tidbits in him. I've been itching to design a bearded and slightly older-than-usual character, so I'm glad I got this one out of the way. Beards are dope. :p Now that I look at it, this guy shares a similar color scheme to Gordon Freeman from the Half-Life series.
And here's an early (sloooppyyy) digital sketch of the Centurion that was used as a base.