Here's the drawing for the character. It's just crazy. It's not quite the totally comprehensive design I was going for, but it's a rush job, so I need to move on the color. If I had more time, I might rework the upper leg; that seems to conflict a little with the rest of that dude's widget design.
Or I can just say his knee is a work in progress, and he's going to stick that test tube in there.