Thanks, people!
@mkultra99 - those two fellas are the Possessed, and the seals above their heads belong to the daemons inhabiting them. The seals are made up; I tried to design them in the style of Goetic seals, but simple enough for me to be able to construct them from wire. The idea of them hovering above the Possessed's heads came from Wayne Barlowe's fantastic depictions of demons of hell.