Fenrir

Pronunciation: Fen-reer
Alternative names: Fenrir, Fenrisulfr (Fenris Wolf), Fenrisúlfr, úlfr Fenris
Fenris is a giant wolf who is the offsping of Loki and the giantess Angerboda.
The Aesir learned that Fenris was prophesied to be responsible (along with his family, the rest of Loki and Angerboda’s spawn) for the destruction of the world. Fenris was locked in a cage, fed by Tyr, the only god willing to do so. Once Fenris had become full-grown, the Gods decided to trick him into allowing himself to be chained by insinuating that he wouldn’t be able to free himself. Fenris agreed to be chained to prove he could break out; he was correct, he was able to break the chains that bound him. The gods then ordered the dwarves to make a chain that could hold Fenris. Using magical ingredients, the dwarves made Gleipnir (“fooler”), an incredibly strong, yet thin ribbon. Fenris agreed to attempt to break Gleipnir, as long as one of the gods was willing to keep his hand in the wolf’s mouth during the experience. Tyr was the only one brave enough to volunteer. Fenris could not escape and Tyr lost a hand. Fenris was chained to a rock called Gioll deep beneath the earth, with a sword between his jaws to keep him from biting.
Fenris will remain bound until Ragnarok when he will join forces with those opposing Odin and will devour him. Vidar, Odin’s son, will kill Fenris. Until Ragnarok, three chains tie the dread wolf down: Loding, Dromi, and Gleipnir.