Ruvven possesses a skin tone the color of deep volcanic basalt, which appears permanently stained by soot and resin. His hair is a chaotic mass of flickering orange and crimson fibers that actually shed dim light in the dark, swaying as if caught in an updraft even in still air. His eyes are molten gold with no visible pupils, glowing brighter when he is agitated. Despite his fiery nature, he moves with a slow, deliberate heaviness, like a cooling lava flow. Paradoxically, he carries a delicate wooden flute carved from a rowan tree that remains perfectly uncharred and cool to the touch, resting against his heat-radiating chest.