Beric Dondarrion

Lord Beric Dondarrion is a character in Game of Thrones. He is played by David Michael Scott and debuts in the sixth episode of the first season.

Beric Dondarrion is the head of House Dondarrion, a young lord who still enjoys the life of a knight, including taking part in tourneys. He is visiting King's Landing when the series begins.

Season 1
Upon hearing of the atrocities committed by Ser Gregor Clegane, Lord Eddard Stark, acting as the Hand of the King, orders Lord Beric to take a hundred men, ride to Ser Gregor's keep and execute him for treason and murder. Beric willingly agrees to the task.

In the books
In the Song of Ice and Fire novels, Beric Dondarrion is the Lord of Blackhaven, a small castle in the Stormlands on the Dornish Marshes. As such he owes fealty directly to House Baratheon. He is a young, vigorous and capable warrior, a skilled knight and charismatic leader of men, as well as popular with ladies. He is accompanied on his mission to arrest Gregor Clegane by the warrior-priest Thoros of Myr, who has been mentioned in the TV series but has not appeared yet.

He plays a minor role in the first book in the series but grows in importance in later volumes.