Drogon is one of the three male dragons born in the wastelands beyond Lhazar, along with his brothers Rhaegal and Viserion. He is named after Daenerys's late husband Khal Drogo. He can be distinguished by his black and red colored scales, and red-black wings.

He was also Daenerys's personal mount and the largest of her three dragons. With the deaths of Viserion and Rhaegal, Drogon is currently the last of his brothers, hence the only known living dragon in existence. Along with his brothers Viserion and Rhaegal, who are both named after Daenerys's brothers Viserys and Rhaegar.

Drogon's mother is believed to be Dreamfyre, the dragon that used to be Helaena Targaryen's dragon before and during the Dance of Dragons, who birthed them as eggs before they eventually hatched. It is believed or thought of that Drogon could be Balerion the Black Dread reborn.

Drogon is a male dragon and the personal mount of his human rider and mother Daenerys Targaryen, and elder brother to his dragon brothers Rhaegal, named after Daenerys's older brother Rhaegar, and Viserion, named after Daenerys's older brother Viserys. Drogon was named after Daenerys's former husband Khal Drogo.

Physically, Drogon is an extremely large dragon, the biggest out of Daenerys Targaryen's dragons with most of his scales being the color black, shadowing red ones that run down his back and neck. Drogon's wings and frills are black-red mix, down to the wing-bones which are black. Drogon's eyes are orange-red. Drogon continues to grow and get better in strength and speed over time to where he can cover most of the sky when he flies and he breathes normal fire as does any dragon, but his fire he breathes is destructive and devastating.