Who is Egg in A Knight of the Seven Kingdoms? The mysterious squire explained

New Game of Thrones show A Knight of the Seven Kingdoms has brought an interesting new character to our screens: Egg, the young squire of hedge knight Ser Duncan the Tall.

Episode 3 ended with a major revelation about the stable boy, which might have you questioning just what exactly is going on. Below, we've broken down what the TV show has revealed about Egg, as well as what George R.R. Martin's source material reveals. The series is adapted from the first of A Song of Ice and Fire author George R.R. Martin's three Dunk and Egg novellas, which is titled The Hedge Knight.

Here, we've explained what we know about Egg in the show so far – and then, using the novella as our guide, we've dived into what's coming up for the squire. Naturally, that means there are book spoilers ahead, so don't scroll beyond the first section if you'd prefer to avoid details from Martin's novella. For more, check out our guide to all the upcoming Game of Thrones movies and TV shows.

Who is Egg in A Knight of the Seven Kingdoms?

Egg started out as a pretty mysterious presence, but the ending of episode 3 confirms that the stable boy is actually a Targaryen prince. When Dunk attacks Aerion to protect Tanselle, he's quickly overpowered by Aerion's guards. Egg intervenes, however, calling the guards off and revealing that Aerion is his brother.

Of course, for particularly eagle-eyed viewers, there were clues all along that Egg wasn't what he seemed. Not only is he unusually precocious with quite the attitude, but he also admits his home is King's Landing (and not Flea Bottom), speaks with a posh-sounding accent, and has an unusual amount of knowledge of the kingdom for an orphaned stable boy.

Egg is played by Dexter Sol Ansell in the show.

What does George R.R. Martin's Hedge Knight novella reveal about Egg? *Spoilers*

Now, we're going to get into book spoilers here, so turn back now if you don't want to know more about Egg!

In George R.R. Martin's novella The Hedge Knight, which is the source material for season 1, Egg is revealed to be named Aegon Targaryen. This isn't a Targaryen we've ever met before, as the show is set roughly a hundred years after House of the Dragon and decades before Game of Thrones.

It turns out that Egg – or Prince Aegon, as he's really called – was supposed to squire for his brother Daeron at the tourney. But, Daeron didn't want to participate, so he instead shaved his little brother's distinctive platinum hair and snuck away from their royal escort, intending to hide for the duration of the festivities. When Dunk believed Egg to be a stable boy, Egg took the chance to squire for him instead.

So, this unlikely squire is hiding a pretty big secret, but how Dunk reacts remains to be seen...

A Knight of the Seven Kingdoms airs weekly on HBO. You can keep up to date with our A Knight of the Seven Kingdoms release schedule, or see our 4-star A Knight of the Seven Kingdoms review for our spoiler-free thoughts on the entire show.