Fenris, The Wolf: A Tragedy is a play written by Percy MacKaye. The play is an adaptation of the Norse mythological tale of Fenrir, the monstrous wolf who is prophesied to bring about the end of the world. The play follows the story of Fenrir, who is born to the god Loki and the giantess Angrboda. Fenrir grows up to be a powerful and fearsome creature, feared by all the gods. The gods decide to bind Fenrir with a magical chain, but he breaks free...