Fenrir
After throwing Jörmungandr into the sea and sending Hel into the land of the dead, Odin had the wolf raised among the Æsir. Only the god Týr was brave enough to feed the growing monster. The wolf got stronger and stronger. The gods were scared that he would eventually destroy them. They tried to chain it up. He agreed to be chained two times. Both times he easily broke the chains.