Against the Brotherhood of Mutants! This was the first concept I had for the Stan Lee show, before deciding to go with a duck-laden Magneto. Maybe not my most brilliantest concept, but after having it rattle around for a year it was sort of like, "Yeah... this still amuses me for some reason. I guess I'll have to paint it."
I also wanted to do a trial run for this style, in preparation for another, larger thing I'm working on. It's basically one of the horrible pop-art paintings I made in high school but done using oil instead of acrylics: instead of having the colors be flat and static, there can be subtle wet-into-wet effects, and instead of having all the lines be solid black they can vary in weight and translucency. The downside is having to wait a million hours for each layer to dry.