Flame

Once a high noble elf named Xasthur, his great affinity to the element of fire cost him his sanity and he eventually lost himself in the flames. He is moved only by a need to burn everything in his path.

He is entirely cosubstantial with fire, and is able to set large portions of his surroundings ablaze with little effort. He cannot be physically harmed because he is literally made of fire.

After an incident with Echan, he was transported in the past and his mind was locked in the Souleater, together with the Hero and others, leading to the first appearance of Surtur occur earlier in the timeline than that of Flame.