|Powers and Abilities|| Elderstahl|
|Allies|| Dark Elves|
Surtur was a powerful fire demon in the Nine Worlds of Asgard.
The Dark Elves of Svartalfheim asked him to defeat the Frost Giants of Jotunheim for them. Surtur saw this as an opportunity to take over the nine realms. He used Elderstahl and attacked them but fought Odin and Gungnir.
Surtur stood on top of the mountain billowing in fire. He held his sword ready. Thor says that Odin's spear Gungnir was the only weapon to rival the sword. Odin held up his spear as his six-legged horse reared.
Surtur raised his sword and brought it down. The energy from the swipe destroyed the mountain Odin stood on. Odin leapt down in time and raced across the plain. Thor and Loki look out over to the destroyed mountain, still with the mark of Surtur's sword.
Loki goes on with the tale saying that Odin knew he had to tire Surtur before defeating him. Odin readied his spear as the horse dodged one of Surtur's slashes. Surtur turned to see Odin riding down a mountain towards him. Thor explains that Surtur grew tired and needed both hands to lift the sword, leaving his chest open to attack.
Surtur saw Odin flying behind him. He raised his massive sword with both hands. Odin turned and raced towards the fire demon. Odin threw his sword hitting Surtur in the middle of his chest. Surtur was blasted back and his sword flew into a far mountain.
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 Asgard.
Surtur then had Enchantress free Loki from the Midgard Serpent and allowed him to go on a rampage through the Destroyer Armor as a distraction for the Avengers while "planting the seeds of destruction".
After reporting to Surtur, he told Enchantress that Ragnarok will descend and all will burn.
Surtur's sword was not named, the producers made it up. Though he did at one point use a sword called Twilight, which was different than the one Eldestahl is based on.
In the Comics
Surtur was sent in exile to the center of Earth.