Status: Partially true
Tyrion did take Quentyn’s place by visiting Dany’s two imprisoned dragons, but instead of being lightly toasted, he bonded with Viserion and Rhaegal before unchaining them.
Original Theory: The storyline of Quentyn Martell (son of Dornish Prince Doran and nephew of Oberyn Martell), who travels in secret to find and attempt to wed Daenerys Targaryen, is notably absent from the TV series — and by the looks of the trailer, Tyrion Lannister might be taking over key parts of Quentyn's role. Because of the dragon-fire fatality that abruptly ends Quentyn's storyline, most fans don't want this to happen, but based on the preview scene where Tyrion visits Daenerys's chained-up dragons, Rhaegal and Viserion, it seems that it could — at least in part. Whether Tyrion is the one on the receiving end of the fatal blast may be another story, though . . .
