Boros Blount

"Ser Boros, Ser Mandon: stay with my uncle, and represent the King on the field of battle."

- King Joffrey Baratheon

Boros Blount is a recurring background character in the first and second seasons. He is played by an unidentified extra and debuts in "You Win or You Die." He is first identified by name in "Blackwater." Ser Boros Blount is a member of the Kingsguard and defends King Joffrey Baratheon as he defended King Robert Baratheon before him.

Background
Ser Boros is a member of House Blount, a noble house from the Crownlands.

Season 1
Ser Boros was among the guards that attacked Eddard Stark when he tried to de-throne King Joffrey. He was also present when Ser Barristan Selmy was dismissed from the Kingsguard.

Season 2
During the Battle of the Blackwater, Ser Boros and Ser Mandon Moore remain at the side of King Joffrey as he oversees the city's defenses alongside Tyrion Lannister, the Hand of the King. When Queen Cersei learns that the forces of Stannis Baratheon have reach the city are beginning to invading it, she orders Joffrey to be brought into the safety of the Red Keep. When told that he has to leave the wall at the behest of Queen Cersei, Joffrey, who has never shown much courage in the face of adversity, complies and orders Ser Mandon and Ser Boros to aid Tyrion and fight on in his stead. They stand behind Tyrion as he gives a speech to rally the troops.

In the books
In the A Song of Ice and Fire novels, Boros Blount is a member of Robert Baratheon's Kingsguard. He is a short-tempered, ugly man with a broad chest and short, bandy legs. He has a flat nose, jowls and grey hair. Ser Jaime Lannister considers him an angry paper shield. Many characters throughout the series think of Blount with contempt due to the man's cowardice. Like Ser Meryn Trant, Varys considers him one of "Cersei's creatures".

In the books, it is Boros Blount the one who carries out Joffrey's orders to undress and beat Sansa Stark instead of Ser Meryn. He's also absent during the Battle of the Blackwater, having been dismissed for cowardice after yielding Prince Tommen to Tyrion's agents when the Prince is smuggled out of King's Landing to protect his life from the impending attack by Stannis Baratheon.