This is an improovement of an older drawing with a similar being, but in green hues (and still his hands - fingers and claws - look aweful due to my lacking patience). The older one was closer to the "swamp inhabitant" with this shape, a half-reptile-tail, as these are known around the fabulous realms and lands I imagined. This is just one of the many other swamp nations.
The new version shows a more powerful, but rare, being from the same nation - black colored. You may wonder why he's wielding fire, then. Well, I wonder too. Perhaps it has more to do with the personality of this character, perhaps he learnt some things somewhere else than the swamps, which would explain he's peculiar tastes: fire (upper flame) and blood (lower dripping ball).