Marvel Universe/Ancient history

Ancient history
The subterranean humanoid race known as the Gortokians encounter Cha'Sa'Dra - a being whom they believe to be a living god, but is actually a minor demon. In exchange for eternal servitude, Cha'Sa'Dra offers the Gortokians the gift of immortality, which they immediately accept. Cha'Sa'Dra transforms their humanoid bodies into a race of bipedal humanoids composed of living lava. These Lava Men serve their living god loyally for thousands of years.