Who The Hell Is Azor Ahai?

The latest trailer for Game of Thrones hints that the Prince That Was Promised might be making an appearance in season 7. But who is Azor Ahai? And how does he, or she, tie into Game of Thrones?

By Lucy James , Tamoor Hussain , and Dave Jewitt on June 26, 2017 at 6:49PM PDT