Looks like I'm in this mutha. My God is in charge of Fire and Brimstone and whatnot. The challenging part of this one for me is taking a character that has been done a few times before with the usual visual hints that he's made of liquid hot magma that we've all seen before, but make him look cooler. All I know is I'm tryin.
The lo down on him is basically he rules liquid hot magma which is used to trap, engulf, incinerate, destroy, burn with catastrophic eruptions and lava slides and if needed breakdown with the help of acidic rain.
He himself is mainly comprised of magma though a portion is water which he uses to regulate his temperature in certain parts of his body to either help harden or liquify himself. Design wise it's simplish. His upper body is held up by a 2nd set of gorilla like arms that have a few digits fused together to form a claw with a trusty thumb. His lower legs are his lower legs in everything's kosher mode. But, when he feels threatened or is attacked, his fat tail which is actually large liquidy legs gone limp can harden with body temperature regulation, fuse with his other legs giving him an extra I don't know 3 or 4 feet of awesomeness to stand on.
Design and story wise, things may change, I'm still toying with some ideas.