Azor Ahai is a legendary figure in the lore of A Song of Ice and Fire, a series of fantasy novels by George R.R. Martin. He is prophesied to be a hero who will return to save the world from darkness, particularly during the struggle against the White Walkers. According to the legend, Azor Ahai forged a magical sword called Lightbringer to combat evil. The prophecy suggests that he will be reborn in a time of great need, and many characters in the series speculate about who this figure might be, leading to various interpretations and theories.