A wild Game of Thrones idea concerning the Mad King, Aerys II Targaryen, is supported by the revelation of Aegon the Conqueror's dream in House of the Dragon.

Even if it was predicted that House of the Dragon would share certain connections with Game of Thrones, it was maybe not anticipated that it would have such an immediate and noticeable impact on its parent programme.

Aegon's dream of the White Walkers was revealed at the end of House of the Dragon season 1, episode 1, and it served to alter and reframe much of what was previously understood about House Targaryen's history.

Since both Jon Snow and Daenerys Targaryen were truly Targaryens alive when the White Walkers eventually arrived and each played their part in conquering them, a large portion of that is inescapably how it transforms their narrative (though neither sat the Iron Throne).

Aegon's dream and the Prince That Was Promised prophecy both seem to centre on the idea of a hero who would lead the living to victory over the dead, and it particularly emphasises Jon's Targaryen pedigree in a way Game of Thrones never completely did.

But it goes beyond simply Jon and Dany; for instance, Rhaegar was preoccupied with prophesy, which makes more sense in light of this information. But what about his father, Aerys II, also known as the Mad King?

If Aerys was aware of the White Walkers, that would give an intriguing new dimension to the Mad King's scheme to destroy King's Landing.

If Aerys was aware of the White Walkers, that would give an intriguing new dimension to the Mad King's scheme to destroy King's Landing.