Fenrir

Fenrir is a Greater Being, born from Loki and Angrboda, and the father of Skoll and Hati. He was chained on the island of Lyngvi by Odin, in an attempt to prevent Ragnarok. Fenrir sensed that the same was done to his children, and became enraged, unintentionally awakening Jormungandr, who then went to search for him.