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Marvel Comics - Hela Wallpaper
Hela was allegedly daughter of the Asgardian god of mischief, Loki.

Queen of Hel
The three Asgardian goddesses of fate, the Norns, are said to have warned the Asgardian gods that Hela would prove to be a great danger to them. Odin, ruler of Asgard, decreed that Hela would become goddess and ruler of the spirits of the dead on the day of her maturity. These spirits were in the other-dimensional realms of Hel and Niflheim, two more of the Nine Worlds, both of which Hela ruled. However, Odin himself directly ruled the souls of Asgardians and their human worshippers who died in battle as heroes, and had the palace of Valhalla built in a distant section of Asgard to house them.