The Kingslayer

The Kingslayer is the epithet given to Ser Jaime Lannister after he murdered King Aerys II Targaryen, whom he had sworn to protect as a member of the Kingsguard. The name defines his public identity throughout the Seven Kingdoms, marking him as an oathbreaker and a figure of profound moral ambiguity whose past actions and present loyalties drive much of the political and personal conflict in the story.

Origin and Meaning of the Epithet

The name "Kingslayer" was earned during the Sack of King's Landing at the close of Robert Baratheon's rebellion. Jaime Lannister, then a seventeen-year-old knight of the Kingsguard, opened King Aerys's throat with his sword while the Mad King sat on the Iron Throne. The act ended the Targaryen dynasty and allowed Robert to claim the crown, but it also violated the most sacred vow of the Kingsguard: to protect the king's life with one's own. Eddard Stark, who found Jaime seated on the Iron Throne afterward, never forgot the sight. "He wore the white cloak of the Kingsguard over his golden armor," Ned recalled. "Even his sword was gilded. He was seated on the Iron Throne, high above his knights, wearing a helm fashioned in the shape of a lion's head. How he glittered!" When Ned confronted him, Jaime laughed and said, "Have no fear, Stark. I was only keeping it warm for our friend Robert. It's not a very comfortable seat, I'm afraid." This moment cemented the Kingslayer's reputation as a man who treated the highest honors with contempt.

Public Perception and Political Consequences

The epithet follows Jaime everywhere, whispered behind his back and sometimes spoken to his face. Even his own family acknowledges the stain. When Eddard Stark argues against appointing Jaime as Warden of the East, he reminds King Robert that Jaime's oath to Aerys meant nothing: "He swore a vow to protect his king's life with his own. Then he opened that king's throat with a sword." Robert dismisses the concern, but the accusation lingers. At Winterfell, Jon Snow observes the contrast between Jaime's golden appearance and his reputation: "They called him the Lion of Lannister to his face and whispered 'Kingslayer' behind his back." The name is a weapon used against him by enemies and a source of shame that even his allies cannot fully ignore.

Jaime's Own Attitude and the Weight of the Name

Jaime himself rarely shows remorse for killing Aerys, but he is acutely aware of how the name shapes others' perceptions. When Barristan Selmy is dismissed from the Kingsguard, he denounces Jaime as "the false knight who profaned his blade with the blood of the king he had sworn to defend." Jaime's response is characteristically sardonic, but the accusation cuts. The Kingslayer identity also complicates his relationship with his family. Tyrion Lannister, who loves his brother, notes that Jaime "was twin to Queen Cersei; tall and golden, with flashing green eyes and a smile that cut like a knife," yet even Tyrion knows the name is a permanent scar. Jaime's own father, Tywin Lannister, treats the epithet as a practical inconvenience rather than a moral failing, but the realm never forgets.

Narrative Significance

The Kingslayer epithet functions as a narrative shorthand for the moral complexity of the Lannister family. It marks Jaime as a man who broke the highest oath, yet it also hints at the possibility that his motives were more complicated than simple treachery. The name follows him into every political calculation: when Eddard Stark suspects the Lannisters of murdering Jon Arryn, the Kingslayer's past makes him a natural suspect. When Catelyn Stark captures Tyrion, she fears Jaime's response precisely because he is known as a man who acts without regard for honor. The epithet is both a curse and a badge, a reminder that in the game of thrones, the line between heroism and villainy is drawn in blood.