Egg grows up to become King Aegon V Targaryen , also known as “Aegon the Unlikely.”

Who “Egg” Is

  • Egg is the nickname of a young Targaryen prince traveling as the squire of Ser Duncan the Tall in the Dunk and Egg stories and the new A Knight of the Seven Kingdoms show.
  • He shaves his head and hides his identity, which is why he just looks like a random bald stable boy at first.

Who He Becomes In The Lore

  • In the wider Game of Thrones / A Song of Ice and Fire backstory, Egg eventually takes the Iron Throne as King Aegon V Targaryen.
  • He is called “Aegon the Unlikely” because he’s a fourth son of a fourth son, so he was never expected to become king at all.

Why Fans Care About Egg Now

  • With HBO’s A Knight of the Seven Kingdoms airing in 2026, Egg has become a trending topic in fan forums and explainer articles, since many show‑only viewers are just now realizing he’s a future king.
  • His eventual fate is tied into major Targaryen history and tragic events that characters in Game of Thrones later reference when mocking “mad” Targaryen kings.

TL;DR: In Game of Thrones lore, Egg is young Aegon Targaryen, who later becomes King Aegon V Targaryen, nicknamed “Aegon the Unlikely.”

Information gathered from public forums or data available on the internet and portrayed here.