The Azure Ahai prophecy is explicitly outlined only in the books but is mentioned and eluded to in the show. This could mean a number of things that we ought to be aware of. The first is that the prophecy could be different from book to show and thus Azor Ahai could be different from the book to the show. A similar example might be the Valonqar prophecy. In the books it is suggested that Cercei would die at the hand of “the Valonqar”, however this line is omitted from the TV show. We don’t know why it was omitted, perhaps because the story would play out differently, or simply it was cut due to something like time constraints. Nevertheless we should be conscious that the books and shows are quite different from each other and that probably will affect future events in a big way. So let’s take a look at the prophecy itself and see where it lines up with Ser Gregor. This is taken from A Wiki of Ice and Fire. ... https://www.youtube.com/watch?v=d3nTHANOG-c