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In true Lannister fashion, Jason arrives with an agenda in Episode 3.

Youll recall them as the blond-haired lions who always pay their debts.

Who Is Jason Lannister?

Jefferson Hall as Jason Lannister in ‘House of the Dragon’

Hes attempting to urge the king to aid in the now-three-year war with the Crabfeeder.

However, Viserys (Paddy Considine) is far too concerned with the royal hunt in the Kingswood.

Upon arriving for the hunt, Jason immediately takes a liking to Rhaenyra (Milly Alcock).

Jefferson Hall as Jason Lannister and Milly Alcock as Rhaenyra Targaryen in ‘House of the Dragon’

When Jason finds her alone, he starts a conversation, and the princess indulges him.

That assumption doesnt sit well with the king.

That mans pride has pride, Viserys tells Otto in a later conversation.

Like his character in the show, his attempts to woo Rhaenyra prove unfruitful.

Ultimately, he sides against the princess when the war of succession breaks out.

As for Jasons connections to the Lannisters ofGame of Thrones,it gets a little tricky.

This Jason Lannister fromHouse of the Dragonis an ancestor of Gerold Lannister.

Gerold would go on to father four children, one of whom wasalsonamed Jason.

Jason, Son of Gerold, had a daughter named Joanna.

She would marry Tywin and give birth to twins Cersei and Jaime before she died giving birth to Tyrion.