Tulzscha, the Green Flame, is one of the dancers in the court of Azathoth. He appears as a pillar of sick, greenish flame; however, there is no warmth in him, perhaps due to the energy absorbed in its summoning.
This obscure entity has only a small clique of worshipers. He is described as " belching column of sick greenish flame... spouting volcanically from depths profound and inconceivable, casting no shadows as healthy flame should, and coating the nitrous stone with a nasty, venomous verdigris. For in all that seething combustion no warmth lay, but only the clamminess of death and corruption."