Surtur (Yost Universe)

Surtur was a powerful fire demon in the. The of  asked him to defeat the s of  for them. Surtur saw this as an opportunity to take over the nine realms. He used and attacked them but fought  and. Odin eventually killed the demon and his sword was lost. Warriors then tried to find the sword in their quest for manhood. The Jotuns feared it would be used to destroy them. Tales of Surtur's final battle were told to children in.

Background
In the comics, Surtur was sent in exile to the center of Earth.