D&D Classes: Warlock

I wasn't too keen on this figure to be my warlock, but he grew on me, and I think he turned out just fine. What specifically makes this figure a warlock? That eldritch blast he's about to throw down on somebody.

I chose a few different browns for this figure. The other mages were all in bright colors, so I wanted to do one more muted. It also sets off the purple of the eldritch blast in his hand. I have just one figure left to do now: the druid. The figure I chose is an elven nature warden from Reaper's Pathfinder series. Unfortunately, this is my busy week at work, so I probably won't get to the druid for a while -- at least not this week. I also have the Wrath of Ashardalon boardgame on the way; I know I'm going to have an inner struggle about if I should paint those figures or not.