Combat Creatures Fetid Fly! It feels like a merger of the original Beasts with a little bit of that trashy slimey gross feeling courtesy of a garbage can backpack and some junk on his person.
Click here to get one off Shapeways now.
Also if you're in the market for this stuff, check out this post explaining which materials are best for which functions. Apparently full-color sandstone is not great for articulation!