Fenrir

And he caught the dragon, the old serpent, that is the Devil and Satan; and he bound him by a thousand years. And he sent him into deepness, and closed, and marked on him, that he deceive no more the people, till a thousand years be filled. And he sent him into deepness, and closed, and signed, or sealed, upon him, that he deceive no more people, till a thousand years be fulfilled. After these things it behooveth him to be unbound a little time.

THE KING JAMES BIBLE, REVELATION 20: 1-3

When the?sir saw that the Wolf was fully bound, they took the chain that was fast to the fetter, and which is called Thin, and passed it through a great rock — it is called Scream — and fixed the rock deep down into the earth. Then they took a great black boulder and drove it yet deeper into the earth and used the stone for a fastening-pin. The wolf gaped terribly, and thrashed about and strove to bite them; they thrust into his mouth a certain sword: the guards caught in his lower jaw, and the point in the upper; that is his gag. He howls hideously, and slaver runs out of his mouth: that is the river called Van; there he lies till the Weird of the Gods.

THE PROSE EDDA