(Possible spoilers for Game Of Thrones series and ASOIAF books.)
Out of the core Game Of Thrones players, Daenerys stands alone as having a legitimate claim to the Targaryen throne. Whether or not that ensures she’ll eventually win the game of thrones only Martin can answer for sure, but we at least know that no other Targaryens are out there and ready to take her spot on the Iron Throne. Right?
It wouldn’t be a day in Westeros without surprise lineages and illicit affairs, so who’s to say that there aren’t more Targaryens out there? A couple dragon-horned curveballs to make Dany’s struggle even worse or keep the Seven Kingdoms on its heels. In fact, book readers know the prophecy of the three-horned dragon, a part of Dany’s vision from the House of the Undying, that says that there will be two other Targaryens to ride with Dany.
And visions from the book aside–as the show has been doing its own thing anyway for a while, and GoT prophecies have proved false before–plenty of other clues suggest multiple living Targaryens exist. Let’s take a look at the top contenders. (Discounting any characters presented in the books and not the show.)