#also viserion was the easiest to chain
Drogon has oldest sibling energy, but I always think of him as technically the youngest of Dany’s children because I associate the third really loud cracking of the egg as his egg hatching
Oh, and it would fit the order of the Targaryen siblings the dragons are associated with. Rhaegal for Rhaegar as the oldest, Viserion for Viserys the middle child, and Dany being Drogon’s rider as the youngest.
It also is connected with the domino of power. If Rhaegar had lived, he would have been the head of Dany’s family. Then when he died it became Viserys. Then through marriage, as a third, it was Drogo. In the same domino order, her destiny would have been, in turn, to live as the consort of one the three, as well.
Rhaegal is not the oldest, though. Viserion is the oldest, Rhaegal is the middle child, and Drogon is the youngest:
She heard a crack, the sound of shattering stone. The platform of wood and brush and grass began to shift and collapse in upon itself. Bits of burning wood slid down at her, and Dany was showered with ash and cinders. And something else came crashing down, bouncing and rolling, to land at her feet; a chunk of curved rock, pale and veined with gold, broken and smoking. The roaring filled the world, yet dimly through the firefall Dany heard women shriek and children cry out in wonder.
Only death can pay for life.
And there came a second crack, loud and sharp as thunder, and the smoke stirred and whirled around her and the pyre shifted, the logs exploding as the fire touched their secret hearts. She heard the screams of frightened horses, and the voices of the Dothraki raised in shouts of fear and terror, and Ser Jorah calling her name and cursing. No, she wanted to shout to him, no, my good knight, do not fear for me. The fire is mine. I am Daenerys Stormborn, daughter of dragons, bride of dragons, mother of dragons, don’t you see? Don’t you SEE? With a belch of flame and smoke that reached thirty feet into the sky, the pyre collapsed and came down around her. Unafraid, Dany stepped forward into the firestorm, calling to her children.
The third crack was as loud and sharp as the breaking of the world. - Daenerys X AGOT
The first to hatch is Viserion, as we can see by the first crack being the egg that was “pale and veined with gold”. Drogon is probably be the last to hatch, given that Drogon is the one most associated with Lightbringer (he is even named after Drogo, Dany’s Nissa Nissa, and just like Nissa Nissa’s strength is said to have gone into Lightbringer, it could be said that Drogo’s strength went into Drogon), and the description of the third crack (“as loud and sharp as the breaking of the world”) is similar to the description of Nissa Nissa’s cry (“It is said that her cry of anguish and ecstasy left a crack across the face of the moon”). So by elimination, Rhaegal is the middle child.
But what you said really is interesting. Drogon is the youngest, but he is described as the fiercest of Dany’s dragons, the biggest,and the bravest, just like Dany ends up being the most important of the Targaryen siblings and the one who accomplishes the most, despite being the youngest and a girl.
Also, just like Drogon is the youngest sibling with oldest sibling energy, it’s interesting that Viserion is the oldest sibling with youngest sibling energy, as he is the most affectionate and the momma’s boy of the three.
If you believe the theory that Tyrion, Jon, and Dany are the three headed dragon (which I do), and that they’ll ride Viserion, Rhaegal, and Drogon respectively, then their own birth order matches their corresponding dragons as well!
It’s also been on my mind for awhile about how amongst Dany’s sons, Viserion is the calmest of the three. And that the hierarchy of fiercest to (still fierce but) calmest of them all, goes Drogon, Rhaegal and then Viserion.
Hence,
Viserion sensed her disquiet. The white dragon lay coiled around a pear tree, his head resting on his tail. When Dany passed his eyes came open, two pools of molten gold. His horns were gold as well, and the scales that ran down his back from head to tail. “You’re lazy,” she told him, scratching under his jaw. His scales were hot to the touch, like armor left too long in the sun. Dragons are fire made flesh. She had read that in one of the books Ser Jorah had given her as a wedding gift. “You should be hunting with your brothers. Have you and Drogon been fighting again?” Her dragons were growing wild of late. Rhaegal had snapped at Irri, and Viserion had set Reznak’s tokar ablaze the last time the seneschal had called. I have left them too much to themselves, but where am I to find the time for them?This is when he is smaller, but she only calls Viserion her laziest one (can’t recall her calling Drogon or Rhaegal lazy.)
Whereas the fiercest of them is without a doubt, Drogon.
AndDrogon…The winged shadow, the grieving father called him. He was the largest of her three, the fiercest, the wildest, with scales as black as night and eyes like pits of fire.And in Barristan’s last chapter in ADWD, it highlights that although both are dangerous dragons, Rhaegal is the more dangerous one compared to Viserion
Far off to the east, beyond the city walls, he saw pale wings moving above a distant line of hills. Viserion. Hunting, mayhaps, or flying just to fly. He wondered where Rhaegalwas.Thus far the green dragon had shown himself to be more dangerous than the white.
