Fenrir

Fenrir is a wolf monster/god in the ancient Icelandic religion and modern Heathenism. He was portrayed by Snorri as being the son of Loki and Angrboda. He grew too big, scaring the Aesir. He had previously been fed by Tyr, but when he became too large and aggressive to feed in the Hallhttps://mythologysource.com/binding-of-fenrir/https://norse-mythology.org/tales/the-binding-of-fenrir/ they decided to tie him up. They started by claiming that the chains were tests of his strength, and when he broke free of all of them, they worried that he could never be contained. They hired some dwarves to make a chain, which was made out of nearly impossible things. Fenrir, to make sure they didn't actually leash him down, held the hand of Tyr in his mouth. When this chain refused to break, he bit off his hand. Afterwards it was predicted that one day Fenrir would break free and help fight against the Aesir during Ragnarok. He would kill Odin but in turn be killed by his son.
Fenrir's children includes Skoll and Hati. Hati specifically has an unnamed giantess as his mother.