Wessidion

Background
70 years ago, Wessidion was determined to create a craft that could sail the Nether's seas of lava. During a nearly successful voyage through the lava seascape, his improvised lavacraft would suddenly fail, leaving him stranded and alone deep in the uncharted nether.

For days did he try to backtrack to civilization, but all he found was the endless heat that would char his lungs and scorch his eyes blind. But rather than feeling hopeless for himself, he was filled with an unkept rage. He denigrated every deity he could name for allowing this to become his fate, when he had so many years of exploration left ahead of him.

Entertaining this little outburst, an unknown deity used flame itself to restore what he lost. His ability to see and breathe would return at the cost of fire being sewn into his body, forever scorching him. Since that day he has lost the ability to age, for his flesh as the flame's fuel shall never perish.