Concept artwork for CG Talk's Dominance War IV. I selected the Demon Lords to design.
Glacier, the Demon Lord of Frost:
His core is a frozen void and his bones are composed of ice shards of crystal hardness. His body is in a constant state of flux and fluidity, which allows him to rapidly regenerate his form. He has the ability to form spikes and razor sharp weapons or edges extending from his body.
His touch and breath simply freezes you to the core.