
Daenerys Targaryen’s cameo in House of the Dragon can be expounded more to explain her tragic fate in Game of Thrones.
Daenerys Targaryen’s cameo appearance in House of the Dragon Season 2 stirred debate among the community as to how the prequel series will tie up with the original show. Thankfully, there’s a possible way to connect the dots and still come up with the same effect that the Targaryen queen was never the Prince That Was Promised.

In connection to this, there’s one move that the upcoming series can do to justify that Daenerys was truly the culprit that obliterated the Targaryen lineage. Of course, this is not solely her burden as her ancestors share a lion’s den of responsibility.
House of the Dragon Needs to Tackle This After Revealing Daemon’s Vision of Daenerys
For many years, fans of Game of Thrones have speculated that Daenerys was the prophesied hero who would come forth and deliver the world from darkness. The end of the show told us that no, she wasn’t – but why did Daenerys show up in Daemon’s visions in Harrenhal?
This is a very important detail in the narrative of the Dance of the Dragons. The Rogue Prince is finally convinced that he should plead fealty to Rhaenyra as he finally wraps his head around the fact that it should be her who sits on the Iron Throne because their savior – The Prince That Was Promised – will be coming from her lineage.

The Targaryens have long believed in their superiority over other houses, and this vision of Daemon will only reinforce the division between the Blacks and the Greens. Aegon the Conqueror’s dream ended up getting twisted, and it already led to a bloody civil war. Daenerys’ appearance in the prequel series can be used to heighten the ancient Targaryens’ desire to claim the throne – of course, without them knowing it will lead their clan to doom.
Their extreme confidence, which is evident in the Doctrine of Exceptionalism, can be utilized by the show to depict how they would come to believe that they are the heroes of the story and subsequently drive Westeros to its downfall, as what we’ve already seen in Game of Thrones.
Daenerys exhibiting the same self-absorbed attitude that her ancestors once showed only brought her demise and in consequence, terminated the Targaryen bloodline.
House of the Dragon Can Explain the History of the Targaryen Madness

Daenerys’ descent to madness was almost a last-minute decision for the writers and it somehow felt rushed and unearned. We all know that her father, King Aerys II, earned the title of the Mad King, but many Targaryens before him have already exhibited classic signs of instability.
Apart from the concept of exceptionalism, the prequel show can also provide more context for Daenerys’ fall into mental derangement. This is one of the things that contributed to the doom of her family, and it would certainly help viewers get more sense of why she finally caved in when at first, she did not really show symptoms of madness.