Hel

"The prayers and wishes of the living often affect the dead, Magnus. Mortals have always know that.""

- Hel

Hel (Hella in other versions) is the daughter of Loki and Angrboða. She is the sister of Fenris Wolf and Jormungand, as well as the half-sister of Sleipnir and Samirah al-Abbas.

The Sword of Summer
Thor sends Magnus Chase to Blue Hill where he meets Hel. While there, she tells the son of Frey that for every soul that goes to Valhalla, a thousand more go to her. She tries to get Magnus to give his uncle Randolph Jack and abandon his quest in exchange to be reunited with his mother Natalie. Magnus refuses her offers and threatens to cut her in two if they ever met again. She then turns into snow and vanishes.

Appearance
Hel is described as "heart-achingly beautiful, about twenty-five years old, with her ermine cloak shimmering like a snowdrift rippling in the wind. The right side of her body and face, however, is terrifying - withered skin, a skeletal hand, and leg, patches of blue ice covering decayed flesh, membrane-thin lips over rotten teeth, a milky-white eye and tufts of desiccated hair like black spiderwebs." She has a milky zombie gaze, which Magnus finds very unnerving.

Trivia

 * Hel's Greco-Roman counterpart is Hades/Pluto.
 * Her Egyptian equivalent is Osiris
 * Her name Hel means Hidden.
 * Her name was also adopted by the Christian to refer to their inferno, Hell.
 * Hel's appearance is similar to Melinoe's since one-half of their body is withered and the other half is pale.