Fenrir is a giant wolf from Norse mythology, known for his immense size and strength. He is the offspring of the trickster god Loki and the giantess Angerboda. Fenrir is prophesied to play a significant role during Ragnarök, the end of the world in Norse beliefs, where he is destined to kill the god Odin. Due to his growing power, the gods decided to bind Fenrir to prevent him from causing chaos. They created a magical chain called Gleipnir, which was made from six mythical ingredients. Despite their efforts, Fenrir is foretold to break free during Ragnarök and unleash destruction upon the world.