But isn’t Dany the last Targaryen? (R.I.P. Maester Aemon) Ah, no. Hadn’t you heard? The Westeros of the books is lousy with secret Targaryens. There’s Dany’s nephew Aegon (who we suspect to be a fraud), Jon Snow (surely you’ve heard of R+L=J by now), and, of course, Tyrion himself. Most people believe Jon Snow, Tyrion Lannister, and Daenerys Targaryen are the three fabled dragon riders of A Song of Ice and Fire. There are other candidates including Bran Stark (who could warg into a dragon) or Varys (another potential secret Targaryen), but it seems likely that the three dragon riders will be three main characters. (Sorry, Bran.)
That’s fine for the book readers, but is there any show evidence to back this up? Well, the dubious parentage of both Jon Snow and Tyrion Lannister have been hinted at in the show. The story of Jon’s presumed parents, Rhaegar Targaryen and Lyanna Stark, was all over the place this season, and when he was alive Tywin was forever going on about Tyrion not really being a Lannister.
But the most compelling argument for Jon, Tyrion, and Dany to be our three dragon riders came in Season 2, Episode 10, during the House of the Undying scene. In this dream-like sequence we see Dany visit three very significant places. Since the House of the Undying scene is much longer and more involved in the books—and contains that line about the dragon having three heads—many believe the HBO series boiled the vision down to its most salient point. In other words, the three locations of the dream—the Wall, the throne room, Khal Drogo’s tent—represent the three dragon riders. The Wall clearly stands for Jon Snow; the tent is for Dany; and the throne room is for Tyrion. Your mileage may vary on this interpretation, but that one is pretty tidy.