"Hel, in Norse mythology, originally the name of the world of the dead; it later came to mean the goddess of death. Hel was one of the children of the trickster god Loki, and her kingdom was said to lie downward and northward. It was called Niflheim, or the World of Darkness, and appears to have been divided into several sections, one of which was Náströnd, the shore of corpses. There stood a castle facing north; it was filled with the venom of serpents, in which murderers, adulterers, and perjurers suffered torment, while the dragon Nidhogg sucked the blood from their bodies. Mention is made in an early poem of the nine worlds of Niflheim. It was said that those who fell in battle did not go to Hel but to the god Odin, in Valhalla, the hall of the slain." -- Encyclopaedia Britannica Online.
It's said that Hel was an oddity to behold, as one half of her was fair and beautiful and like her father... while her other half of her was misshapen and ugly like her mother.
I always have fun doodling Loki's children