Jon, Tyrion, and Daenerys. Each need to show their true character makeup through their actions not their names.

Jon is a bastard (false - he is the son of Ned Stark, socially)- he needs to become a man, kill the boy and show the moral values he learned at Winterfell, not from his absent real bio-father, Rhaegar

Tyrion is a monster (false, in the eyes of his father, Aerys, and his false father Tywin) this is in part why King Aerys went mad - he thought Tyrion's birth was an abomination- omen of his bad seed

Ironically unlike the other, Daenerys has the Targeryen name, but is not full-blood Targaryen (shes half, a Targ pretender) - her true parentage has been speculated about here on ASOIAF - correctly, the majority of fandom think she is the full sister of Viscerys and her parents are King Aerys II Targaryen and his sister-wife, Queen Rhaella- but she is not - figure it out

None of the dragon riders can be full-blood Targaryens - look at the color orientation of each of the three dragons - who might ride which one - this is a clue -

Drogon - egg is black as the midnight sea, alive with scarlet ripples and swirls - scales are black his horns and spinal plates are blood red - eyes are smouldering red - flame is black fire shot with red - bleeds black blood - the winged shadow -

Viserion - egg colored pale cream streaked with gold - scales cream and gold - eyes are two pools of molten gold - flame is pale gold shot through with red and orange - he is often referred to as the white dragon (This is Jon Snow's dragon) - her silver mare she is wearing her lion pelt - he sinks his sharp black claws into the lion's mane - about the size of a small dog - He clings to the roof of the pit like some huge white ba

Rhaegal - egg is a deep green with burnished bronze flecks - scales green and bronze - eyes are bronze - flame is orange-and-yellow fire - at various times, he is described as the size of a small dog and head is now larger than a horse's - more dangerous than his brother Viserion - during the second seize of Meereen, Rhaegal circles above the bay, banking and turning as longships and galleys clash and burn below him