Jaime Lannister (Nikolaj Coster-Waldau)Jaime is the eldest son of Lord Tywin and Lady Joanna Lannister and twin brother to Queen Cersei and older brother to Tyrion.He was a Kingsguard knight to King Aerys II Targaryen and now to his successor, and brother-in-law, King Robert Baratheon.Ser Jaime forsook his birthright as heir to Casterly Rock when he was raised to the Kingsguard.During the Sack of King's Landing at the conclusion of Robert's Rebellion, he killed the insane King Aerys II Targaryen in violation of his Kingsguard oath and has carried the ignominious nickname Kingslayer ever since. He was granted a full pardon by King Robert and allowed to remain a member of the Kingsguard.Jaime has a very close relationship with his sister.He is an excellent warrior, extremely attractive, bright, and strong. He also has a wry, often self-deprecating wit that can get him into trouble.