Rhinnalian fireheads, often called fireheads, were agile beings originating from the frigid polar areas of the planet Rhinnal. This walking fish employed its elevated internal heat to tunnel through the ice, and they were commonly seen atop the Zirfan Glacier. The firehead's bumpy upper mandible functioned to both dissolve and abrade the ice, and it also served as a tool to dispatch its victims. For the indigenous Rhinnalians, these organisms provided warmth and nourishment.