Meet the devourer of souls.
In his kingdom, there are hell-fire cauldrons or fire rivers. There’s just blood velvet emptiness and forever-hungry belly of the demon. All souls are slowly burning inside of it. There’s no escape. There’s no hope.
Only if The Devourer eats too much, his belly can burst like a balloon, that’s the only way you can escape. But not for long, because The Devourer is immortal, he always returns, and in his kingdom there no place to hide, you’re doomed.