Fenrir, a monstrous wolf, was one of three terrible children of the Norsereferring to the people and culture of Scandinavia: Norway, Sweden, Denmark, and Icelandtrickstermischievous figure appearing in various forms in the folktales and mythology of many different peoples god Loki and the giantess Angrboda. Their other children—Jormungand, a giant serpent, and Hel, the goddess of the dead—were thrown out of Asgard, the home of the gods, by Odinin Norse mythology, one-eyed deity and ruler of the gods. But Odin felt that the gods should look after Fenrir.

In time, Fenrir grew incredibly large, and only Odin's son Tyr was brave enough to approach and feed him. The gods finally decided to chain the beast, but Fenrir broke the two huge chains they...