This is a Reaper Bones miniature, called Filth Beast (#77125) and carved by K. Williams.
This was challenging for a couple of reasons. It is the first real miniature from Reaper that I've painted, and this plastic is not easy to deal with. I've also been experimenting with washes a little more.
For this one, I spraypainted the figure white and then hit is with an all over flesh wash. The colors applied are thinned acrylic paint to keep it translucent. The Reaper figure material is very flexible, and the wash tended to rub off in my hands during painting.
The effects are pretty dang good, though. This thing looks filthy. Although marketed as a 28mm figure, it makes for a massive 15mm dungeon denizen. The human figure shown here for scale is out of Ral Partha's Blighthaven line, specifically the Human Mercenary pack. I'm really looking forward to painting up the first set of good guys for the dungeon.