Tamamo-no-Mae
The Emperor ordered Kazusa-no-suke and Miura-no-suke, the most powerful warriors of the day, to hunt and kill the fox.  After escaping from the hunters for some time, the fox appeared to Miura-no-suke in a dream.  Once again in the form of the beautiful Tamamo-no-Mae, the fox told Miura-nosuke would kill it the next day, and begged for its life.  Miura-no-suke refused.