Thrain is a boulder of a dwarf with skin the color of wet river clay and a beard so dense it looks like matted peat. His most striking feature is his left eye socket, which holds a perfectly spherical orb of polished cold iron instead of a glass eye. He moves with a heavy, rhythmic limp that sounds like a hammer hitting an anvil. Despite his rugged, soot-stained exterior, his hands are surprisingly nimble and clean when handling delicate clockwork or fine blades. He carries the scent of woodsmoke, old grease, and sharp metallic ozone.