Lords of Creation: Ancients of the Void
Ten feet tall, sulfur based life. They have skin like obsidian, spikes upon their joints that could be dangerous to the unprepared, and their heads tend to give off smoke, though they can control that. Sexual dimorphism is, to unrelated races, fairly hard to pick out, but tends to be in how their head plumes arrange and one side having slightly softer, more rounded features. However, most mortals have no clue which side that is. They live around 200 years, reaching maturity around 30, and have a slow birthrate.
They were made by Mekhet for the god Faines as a gift, and given incredible resilience to heat (though they burn too). They have since carved out the volcano they have been given to live in into Mt. Halcua as it stands today, a city designed to forever be full of music.