Loki

The earthquakes will be so great that all bonds and shackles and fetters will be destroyed.
All of them.
Fenrir, the great wolf, will free himself from his shackles. His mouth will gape: his upper jaw will reach the heavens, the lower jaw will touch the earth. There is nothing he cannot eat, nothing he will nbot destroy. Flames come form his eyes and his nostriles.
Where Fenris Wolf walks, flaming destruction follows.