I have always been intrested in Norse Mythology, and I have a touch of the Vicking in me, Hel is one of the figures of Norse Myth that intrigues for varrious reasons.
Hel was the daughter of the trickster God Loki. Her siblings were the Fenris wolf and Jormungand the serpent. Hel is described as being half alive, and half corpse (or sometimes simply as half white and half black).
Though the Christian version of the underworld gets its name from this Norse Goddess, the realm that she actually ruled was quite different from the fire & brimstone Hell. The underworld of Norse myth was actually called Niflheim and there went the souls of those who died, but not in battle (usually of old age, accident or disease). Hel ruled here from her own hall, Helheim. Sometimes the names Niflheim and Helheim are used interchangeably, and then her hall is called Sleet-Den.
Though her role might seem unpleasant, she was happy when given the Underworld as her kingdom. In thanks, it was Hel who gave Odin his pair of ravens, Huginn and Muninn.
Due to her remote and lonely home, she was not part of many Norse myths and therefore has little detail surrounding her.
But she has become popular to many Pagans, Neo-Pagans, and Wiccans of today, she is often depicted in Pagan artwork of today, and is called upon for magick and divination, and is said to be the gaurdian of the crossroads