Surt

Surt is the “Jotun .. set free”. "Surt is no enemy of Tivar or wight, but a primal force of nature (unlike frost Jotuns which are absolute uncontrollable chaos). Where Frey is the green-vegetative world, Surt is either the warming hearth fire or the blaze that levels a home. His is a necessary darkness, much like a volcano - ever destructive yet leaving behind new land. The dead reach Hella’s Hall through Surt for he is the Jotun of funeral pyres, the flesh-eater and purifier. Surt is a messenger who conveys all sacrifices to their proper destination."

From: VöluspáSeiðr as Wyrd Consciousness, by Yngona Desmond