Cersei Lannister

Queen Cersei Lannister is a major character in the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and tenth seasons of Game of Thrones. She is the widow of King Robert I Baratheon, and through him, was the Queen of the Seven Kingdoms. She is the daughter of Lord Tywin Lannister and Lady Joanna Lannister, the twin sister of Ser Jaime Lannister and the elder sister of Tyrion Lannister. She shares an incestuous relationship with Jaime, who is secretly the father of their three bastard children, their now deceased son Joffrey, their daughter Myrcella and their remaining son Tommen.

Biography
Cersei was the only daughter and eldest child of Lord Tywin Lannister and his wife Joanna Lannister, who was also his cousin. Tywin was the head of House Lannister, the richest man in the Seven Kingdoms and Lord Paramount of the Westerlands. The Westerlands are one of the constituent regions of the Seven Kingdoms and House Lannister is one of the Great Houses of the realm. Cersei was the elder twin of Jaime Lannister and the elder sister of Tyrion Lannister. She was raised in privilege in the family seat of Casterly Rock. She was known for her great beauty.

Cersei's mother died when she was four years old, after giving birth to her younger brother Tyrion. Like her father, Cersei had always blamed Tyrion for her mother's death and deeply resented that her mother died so that Tyrion would be brought into the world. As for Cersei's father Tywin, he was constantly away from home during her childhood and teenage years, serving as Hand of the King at the capital, with only infrequent visits back to his seat at Casterly Rock. Coupled with the death of her mother, this meant that Cersei and her two brothers were primarily raised by servants attached to House Lannister. She began an incestuous relationship with Jaime in her youth which has continued despite her marriage. While Cersei had other partners, Jaime had always kept himself strictly for her.

When she was about fifteen, Cersei and her friend Melara visited Maggy, a woods witch and reputed fortune teller dwelling in a hut deep in a forest close to Casterly Rock. Melara was reluctant, but Cersei convinced her to go. After rudely awakening her and insisting on having her future foretold, Maggy tasted a drop of her blood and revealed to Cersei she wouldn't marry "the Prince" but "the King", and while the king would have twenty children, she would bear only three children who will wear golden crowns as well as golden shrouds. Finally, she revealed to Cersei that although she would indeed be Queen, she would be cast down by another, younger and more beautiful queen.

After the end of the civil war which ended the reign of House Targaryen, Cersei was married to King Robert Baratheon, a political marriage Robert agreed to in thanks for her father's last-minute alliance. She was only 19 when she married Robert and became Queen. At first, Cersei was infatuated with the handsome Robert, but their love began to wane when he called her "Lyanna" on their wedding night. She nevertheless bore Robert a son who died shortly after his birth. Cersei was devastated by the loss of her son and refused to have the body taken from her, forcing Robert to hold her while they took her son from her. In time, Cersei's feelings for Robert turned to hatred and she returned to her brother as a result. Her three children, Joffrey, Myrcella and Tommen, were officially Robert's, but in reality were the products of her incestuous relationship with Jaime.

Season 1
In King's Landing, Queen Cersei watches the silent sisters preparing the body of Lord Jon Arryn, the Hand of the King, for burial. She and her twin brother, Jaime, discuss the situation and wonder if Jon told anyone else about what he had discovered. Jaime tells her not to worry, since if the king knew the truth they'd be dead already, and that Robert will simply choose a new Hand of the King everything will go on as normal. She suggests that Jaime could be the next Hand, but Jaime refuses, citing the position as too much responsibility and danger.

King Robert decides to travel to Winterfell and ask his best friend, Lord Eddard Stark, to become the new Hand, as well as proposing that his son Joffrey marry Eddard's eldest daughter, Sansa. Cersei, Jaime, and a retinue of courtiers accompany him. When the royal party arrives at Winterfell (the seat of House Stark) a month later, Eddard presents his household to Robert and Cersei, who is greeted much more formally than Robert.

After initial greetings, Robert demands to see the crypts and pay his respects to his former betrothed, Lyanna Stark, stoking Cersei's impatience, eager to rest after a month's travel. After Robert and Eddard depart, Cersei sends Jaime to find their younger brother Tyrion, who has become distracted at the local brothel. That evening, a great feast is held and Cersei and Catelyn Stark exchange cordial words. Cersei seems impressed by Sansa, thinking that she will be a great success at court.

The next morning, Eddard and Robert go hunting, leaving the castle largely empty. Cersei and Jaime liaise in derelict tower. Bran Stark climbs the tower and finds them engaged in sexual intercourse. He is caught watching by Cersei, and Jaime grabs him. Whilst Cersei immediately becomes worried that their secret will be exposed, Jaime feigns Bran with a sense of safety. He asks how old Bran is. When Bran replies "ten", Jaime sighs and pushes him out of the window, musing, "The things I do for love."

A month later, at breakfast, Tyrion tells his family that Bran is expected to live and notes his sibling's guarded reactions to the news. Cersei notes that it no mercy to let the boy live, after which Tyrion snidely remarks that only the Gods know his fate. Tyrion then crudely tells his family what he plans to do whilst at the Wall, and although Tommen and Myrcella laugh, Cersei ushers them away from his "filth". In response to Tyrion's information, Cersei visits Catelyn, who is sitting vigil for Bran. Cersei tells Catelyn that her first child, a beautiful, black-haired boy, died of a fever.

She and Robert were grief-stricken and her prayers and tears were for naught. She offers to pray for Bran's survival, hoping that this time the gods will listen. The royal party sets out for King's Landing, now joined by Eddard, Sansa and Arya. However, an incident between Arya's direwolf and Joffrey on the Kingsroad escalates into an argument between Cersei and Eddard. Robert defuses the situation by agreeing that he and Eddard will attend to their own discipline. Cersei insists that the direwolf must be killed. When Nymeria cannot be found (Arya having driven her off to protect her), Cersei has Sansa's wolf, Lady, killed instead. A furious Eddard attends to the matter himself to spare Lady a much more grisly death at the hands of Ilyn Payne.

Arriving back at court, Cersei talks to Joffrey about the incident on the Kingsroad. She tells him that when he is king, the truth will be whatever he decides it will be. Joffrey tells her that he thinks there will be trouble with the Starks, and that when he is king he'll double their taxes, force them to contribute to a standing army and, if they should object, he'd crush them. Cersei elucidates that the North is too vast and wild to be militarily conquered by outsiders. She cautions Joffrey that he will need to be cleverer as king. She also advises him to be kind to Sansa to avoid causing trouble for later, and concludes that "anyone who isn't us is an enemy." A raven arrives in King's Landing with news of Bran's recovery. Cersei fears he will expose their secret, but Jaime comforts her

At the tournament, a drunken Robert embarrasses Cersei, causing her to leave. She visits Eddard at his chambers, remarking at how the Hand is not at his own tournament. Though Cersei attempts to start the conversation in an attempt to put the incident on the Kingsroad behind them, Eddard correctly deduces that she has an ulterior motive for her visit. Cersei then wonders aloud to Eddard what his true purpose is for being at King's Landing, as she knows how little Starks enjoy being in the capital. When Eddard tells her he is there to faithfully serve their King, Cersei remarks that just as his brother Brandon was born to lead, Eddard was born to follow

Cersei and Robert share a drink and discuss the threat from the Dothraki now that Daenerys Targaryen is married and pregnant. Cersei also tells Robert that at the start of their marriage she truly loved him, even after their first boy died, for quite a while. He says he knows, but could never love her back due to his feelings for Lyanna Stark.

Cersei and King Robert visit Eddard as he recovers from wounds sustained fighting Jaime and his guards. Cersei is furious with Eddard for having her brother Tyrion arrested and for fighting with Jaime, but Eddard is unrepentant. Finding Robert unresponsive to this, she scolds him. He then hits her across the face, leaving an obvious mark. She marks that this only increases her integrity, but Robert threatens her to silence, promising to hit her again if she speaks of it.

Eddard confronts Cersei and tells her he knows her children are fathered by Jaime. She does not deny it, instead saying that she and her brother belong together, always. Cersei says she did love Robert at first, but on their wedding night he whispered Lyanna's name, which soured their relationship afterwards. Eddard advises her to leave King's Landing before Robert returns from a hunt, as he will then tell Robert the truth. Cersei instead warns him that "In the game of thrones, you win or you die."

Robert is mortally wounded on the hunt. Cersei is concerned that Eddard will tell Robert the truth, but Ned chooses to spare his friend further pain. Robert names Eddard Protector of the Realm and regent. Upon Robert's death Cersei quickly installs Joffrey on the throne. Eddard tries to reveal the truth with the help of Petyr 'Littlefinger' Baelish, but Baelish betrays him and sides with Cersei. Eddard is arrested and imprisoned, while his guards are killed.

Cersei persuades Sansa to write a letter asking her brother Robb to bend the knee to Joffrey in return for her father's life. Sansa agrees, but the plan backfires, as the letter merely encourages Robb to raise an army and march into the Riverlands to confront the Lannister armies directly. In open court, Cersei encourages Sansa to make a new plea to Joffrey for her father's life. Joffrey agrees to spare him and let him join the Night's Watch, if Eddard recants the claims he has made about Joffrey not being the true king.

Sansa is sure he will. Cersei is present at the Sept of Baelor when Eddard Stark 'confesses' his crimes, in accordance with the arrangement brokered by Sansa and Varys. She is visibly horrified when Joffrey arrogantly flouts the arrangement and instead demands Eddard's decapitation. Knowing that this will only lead to another war, she frantically tries to persuade her son to reconsider, but the order is nonetheless carried out by Ser Ilyn Payne, the royal executioner.

Sure enough, war erupts between the Lannister and Stark armies in the Riverlands and Cersei attempts to secure her son's hold on the Iron Throne. She takes a new lover, her cousin Lancel who was King Robert's squire and gave him the wine that made him too drunk to slay the boar that killed him. She also receives a letter informing her of Jaime's capture by Robb Stark.

Season 2
Cersei continues to govern from King's Landing as the Queen Regent to Joffrey. She is driven to defend Joffrey's claim in the face of several challengers in the War of the Five Kings. Facing imminent winter, she orders the city gates barred to prevent further refugees from entering the city. She is perturbed by the arrival of her brother Tyrion, who has been named acting Hand of the King by their father Tywin Lannister. She fears that Tyrion schemes to usurp her power and is frustrated when he tells her that since she failed to prevent the death of Eddard Stark, she has been viewed as the disappointing child by Tywin. Tyrion wins her temporary acceptance when he pledges to free Jaime from captivity, but insists that they need to find the fugitive Arya Stark in order to facilitate a prisoner exchange.

Stannis Baratheon sends copies of a letter detailing Cersei's incestuous relationship with Jaime and the illegitimacy of her children to high lords throughout the seven kingdoms, fueling widespread rumors. Cersei tasks Petyr Baelish with recovering Arya and is enraged when Baelish dares to reference the rumors. She asks Joffrey to enlist the aid of Tywin in the search, but he refuses to involve his grandfather. He provokes an argument with Cersei about the rumors and threatens her life when she slaps him. He then orders a citywide massacre of Robert Baratheon's bastard children so that he will have no rival claimants in case his true parentage is revealed.

Cersei rejects King Robb Stark's peace terms and refuses a request for aid from the Night's Watch, ignoring news of wights attacking the Lord CommanderMormont. Tyrion ousts Lord Janos Slynt as commander of the City Watch for his part in the massacre as well as his betrayal of Ned Stark. Cersei angrily confronts him for displacing her loyal servant.

He warns her to consider the importance of the support of her subjects; she is dismissive of his concerns but becomes upset at the weight of responsibility she has born. Tyrion mocks her relationship with Jaime. She ends the discussion by saying that Tyrion's finest joke was killing their mother when he was born.

Tyrion tests the loyalty of the remaining small council members by feeding each of them a different marriage plan for Myrcella. Pycelle dutifully informs Cersei of Tyrion's plans to marry Myrcella into House Martell of Dorne despite his promise to keep them secret. Cersei confronts Tyrion who insists that the alliance is necessary and that Myrcella will be safer in Dorne. He then has Pycelle arrested for breaking his confidence. Tyrion sends Petyr Baelish to negotiate with Catelyn Stark, leaving Varys as the last active member of Cersei's small council in the city.

Robb Stark wins a major victory at the Battle of Oxcross. Joffrey responds by having Sansa Stark publicly beaten, sparing her only because of Cersei's orders, that if Sansa is killed the Starks will exact vengeance on his uncle Jaime. Tyrion intervenes and halts the ordeal, causing further deterioration in his relationship with Joffrey.

Cersei issues a warrant demanding the release of Pycelle. She tasks her lover and cousin Lancel Lannister with delivering it to Tyrion. Lancel arrives in the middle of the night, and Tyrion asks why he waited so long to deliver the message. When Lancel says he just came from Cersei, Tyrion notices Lancel smells of Cersei's favorite perfume, and threatens to expose their relationship to Joffrey unless Lancel agrees to become his double agent, reporting everything Cersei does.

Cersei is pleased when she learns of King Renly Baratheon's death. Tyrion considers it a sign of an imminent attack by his brother King Stannis Baratheon, who has assumed control of Renly's army. Cersei refuses to discuss measures for the defense of the city and remains irate about the marriage pact with Dorne. Tyrion learns from Lancel that Cersei is relying on the Alchemists' Guild to supply Wildfire to defend the city and supplants her relationship with the Guild.

Cersei and the court assemble at the shore of the Blackwater Bay for the departure of Princess Myrcella. Cersei remains livid about Tyrion's arrangements for her daughter. She threatens to one day deprive him of someone he loves. As they move through the city to return to the Red Keep they are confronted by angry crowds of starving smallfolk. Joffrey is hit by thrown excrement and triggers a riotby demanding that his guards kill everyone in the crowd. Tyrion marshals the Lannister guards to lead them to safety.

Upon learning that Sansa has flowered for the first time, Cersei summons Sansa and offers her advice on motherhood. Cersei tells her to love only her children, since love makes you weak, although it is a mother's obligation to love her children. Sansa asks if she should love Joffrey; Cersei replies that she is welcome to try.

Cersei meets with Tyrion to discuss the imminent attack of King's Landing by King Stannis Baratheon. She admits her struggles controlling Joffrey and openly references her relationship with Jaime. She confides her fear that Joffrey's madness is the price for her sins, including her incestuous relationship. Tyrion tries to comfort her by telling her that Tommen and Myrcella are good, decent children.

Joffrey is keen to fight in defense of the city. Cersei is furious and suspects Tyrion of trying to kill her son. She mistakenly identifies Ros as his lover because of the Lannister necklace Tyrion gave her and seizes the opportunity to deliver on the threat she made when Myrcella left. Cersei has the prostitute kidnapped as insurance against Tyrion placing Joffrey in harms way. She reveals her ploy over dinner and Tyrion vows to free Ros and take revenge when Cersei least suspects it.

Cersei provides refuge for the women of the court in Maegor's Holdfast during the battle. She prepares for the worst by having Ser Ilyn Payne present and obtaining deadly Essence of Nightshade poison from the reinstated Pycelle. She drinks heavily during the siege and torments Sansa Stark when she tries to keep up the morale of the women by praying. She tells Sansa that the gods have no mercy and that Ser Ilyn is there to kill them should the Red Keep be breached.

Lancel is wounded and returns from the walls to report that Stannis has reached the Mud Gate, despite Tyrion's ingenious use of Wildfire to destroy a large portion of his fleet. Cersei sends Lancel to bring Joffrey back to the Red Keep, ignoring his protests that it will damage morale. Joffrey willingly leaves the field but his exit is a blow to the men.

Lancel begs Cersei to let him return Joffrey to the front, believing the battle is lost otherwise. Cersei pushes him into a stone pillar, aggravating his injury, and storms out. Convinced the battle is lost, and not wanting her children to die by Stannis's hand, she takes Tommen to the Iron Throne room and prepares to poison him. She is stopped just in time by the unexpected arrival of Tywin, who reports that they have won the battle. Tyrion is betrayed and wounded by Ser Mandon Moore of the Kingsguard during the fighting.[23] Tyrion's role in defending the city is not acknowledged and he is left to recover from his wounds, stripped of his power. Rumors circulate that Cersei ordered the attack on Tyrion. No longer considering Tyrion a threat, Cersei releases Ros.

Cersei orchestrates a public ceremony rewarding those who aided the city in the battle. Tywin is officially recognized as Hand of the King, Petyr Baelish is named Lord of Harrenhal for brokering the alliance with House Tyrell and Ser Loras is offered a favor of his choosing. He asks Joffrey to marry his sister, Margaery Tyrell. Joffrey says that he is constrained by his betrothal to Sansa but Cersei intervenes to insist that the treachery of House Stark frees him from any obligation. The court welcome the decision with a round of applause.

Season 3
Some weeks after the Battle of Blackwater, Cersei pays Tyrion a visit accompanied by two of her son's Kingsguard. She only gains entrance to Tyrion's chambers after agreeing to leave her guards outside. Once inside Cersei demands to know how he will "slander" her to their father now that he is here. Tyrion asks when he has ever slandered her before, and she reminds him of a time at Casterly Rock that he got her in serious trouble with their father: when she was nine years old, Cersei discovered that a servant girl (also nine years old) had stolen a necklace, so she had her guards beat the girl, who ended up losing an eye. Tyrion told their father what Cersei had done and he was angered, but Cersei notes that the servant girl never stole a necklace again. Tyrion quips that it isn't "slander" if it's true, and he only told Tywin what she really did. The queen admits that Tyrion is a clever man but not as clever as he might believe. Tyrion merely retorts that this still makes him a great deal more clever than her. Cersei then leaves abruptly and just in time to prevent Meryn Trant and Bronn from exchanging blows.

At night, Cersei and Joffrey are hosting a private dinner party for Loras and Margaery Tyrell. Cersei is surprised that Margaery has been handing out food aid to the smallfolk of the city and visiting orphanages. Unlike Cersei, who only knows how to rule through fear, Margaery is skilled at winning the hearts and minds of the common people, and this concerns Cersei. After trading veiled insults with both her son and future daughter-in-law, it becomes clear that Cersei doesn't trust Margaery and fears that the younger woman has come to usurp her as queen.

While speaking with Joffrey about his upcoming wedding, Cersei begins to criticize Margaery, saying that she is only charitable to the poor to build up her own reputation and that she dresses like a harlot for a reason. Joffrey, however, dismissively tells Cersei off.

At King's Landing, Tywin Lannister calls the first meeting of the Small Council since he arrived in the city and assumed his position as Hand of the King. He has the meeting place changed to a room next to his own quarters in the Tower of the Hand, asserting his dominance. Tywin arrives early and has all of the council members called in at once. All of the seats are on one side of the table, as a non-verbal test to see how each of them reacts around him. Cersei arrives to find the seats are all occupied, but not wanting to play that game and be relegated to a lowly position, she pulls up a chair so she is sitting at Tywin's right hand, opposite Littlefinger.

While Joffrey is giving Margaery a tour of the Sept of Baelor, Cersei speaks with Lady Olenna, exchanging stories about their deceased husbands. When Margaery takes Joffrey with her to greet the common people, Cersei realizes that she has lost control of Joffrey to the Tyrells. Later, Cersei meets with Tywin to discuss the Tyrells and informs him how Margaery has begun to manipulate Joffrey. Tywin is satisfied, as Cersei has only let Joffrey do whatever he pleased. He also tells her that she is not as smart as she thinks she is and that undermining the Tyrells would be irrational considering how they helped defeat Stannis. When Margaery and Joffrey wave to the crowd outside the Sept, Cersei initially fears for Joffrey's safety. Upon realizing that the crowd is hailing the two, Cersei then realizes that Margaery has a control over Joffrey.

Cersei encounters Lord Baelish and informs him that she fears the Tyrells do not have the Lannisters' best interest at heart. Littlefinger agrees that he will use his spies to uncover their plans, one of which turns out to be marrying Loras to Sansa. Initially, Cersei is delighted when her father decides to "kill this union in its crib" by instead having Tyrion marry Sansa to secure the North. However, her smug attitude towards Tyrion when this is revealed to him quickly evaporates when Tywin reveals that he intends to have her marry Loras to secure the Reach.

Cersei protests against this, saying she is Queen Regent and not some broodmare, but Tywin angrily asserts that she is his daughter and she will do what he tells her and put an end to the "rumors" about her. Cersei begs her father not to make her enter another loveless marriage but Tywin refuses to hear another word from either of his children, saying they have disgraced the family name for far too long. As Tywin leaves the room, Cersei hesitantly opens her eyes and shifts her gaze toward Tyrion, expecting to see him laughing at her but Tyrion is too glum about his own awkward predicament.

Cersei and Tyrion Lannister observe Loras and Sansa from Cersei's chambers overlooking the garden. Tyrion sarcastically asks which of the four of them has it the worst. He then finally accuses his sister of trying to have him killed during the Battle of the Blackwater. Cersei, tired of fighting him, remains quiet while he deduces that only two people can command the Kingsguard. Tyrion realizes that while Cersei certainly has the authority to command a Kingsguard, she isn't stupid enough to command Ser Mandon Moore to kill him in public. Tyrion realizes that it was in fact Joffrey who ordered Ser Mandon Moore to kill him, because Tyrion was the only one who stood up to him. Cersei tells him his life is not in danger from Joffrey, as he dare not try anything like that now that Tywin is the Hand. They discuss about Jaime's possible return to King's Landing, with Cersei wondering where he could possibly be. She asks Tyrion which one of them should be the one to break the news to Sansa. Tyrion decides he might as well dash Sansa's hopes sooner rather than later.

As the court gathers for Tyrion's wedding, Cersei finally snaps when Margaery says she looks radiant. Cersei reminds the queen-in-waiting of the lyrics of The Rains of Castamere and to take a lesson of what happened to House Reyne. Cersei threatens to have Margaery strangled in her sleep if she ever refers to her as "sister" again. Cersei maintains a cool expression during the ceremony, and does not laugh when Joffrey ridicules Tyrion by removing his footstool. During the wedding feast, Joffrey heads off to torment Sansa some more. Fed up with him, Cersei tells him to speak with Margaery instead, but he ignores her. Cersei later retreats to an upper gallery and stares despondently out over Blackwater Bay. Loras sees her and tries to make small talk, but Cersei rudely brushes him off.

Cersei is present at the meeting where Tyrion learns of Robb and Catelyn's deaths. Joffrey comments that he wants to present Robb's head to Sansa at his wedding feast as promised, though Varys reminds him that Sansa is now his aunt-by-marriage. Cersei brushes it off as a joke, though Joffrey denies this. She also reassures Joffrey when he is threatened by Tyrion. At the end of the meeting, she leads Joffrey to bed after he calls out Tywin's cowardice during the Rebellion.

Later, Cersei visits Tyrion and rudely dismisses Podrick. She tells Tyrion that he should give Sansa a son if he truly wants to make her happy, though Tyrion responds by asking her if she is happy as she has children. Cersei admits that she is not happy, but would've thrown herself "from the highest window in the Red Keep" without them, even Joffrey. She recounts of how he was all she had before Myrcella was born and how she would spend hours looking at him, and acknowledges that he is one of the "terrible ones". Tyrion asks her when this will end, and Cersei replies when they have dealt with all their enemies. Tyrion mentions how dealing with one enemy creates two more, and she just says that they will be in this position for a long time.

When Jaime returns to King's Landing, he immediately goes to Cersei's chambers and calls her name. Looking at seashells on her bed, smiling, she turns around upon hearing her name called, shocked and sickened at finding him maimed.

Season 4
Cersei is present while Qyburn is attaching Jaime's golden prosthetic hand that she commissioned for him because she's so disgusted by his stump. After Qyburn departs from Cersei's chambers, Jaime asks why she drinks more than she used to. Cersei replies that she drinks more because Jaime left the capital, Robert was killed, Myrcella was shipped off to Dorne, they suffered through a siege, and her son Joffrey is being married to Margaery whom she despises. When Jaime tries to make love to her, she refuses him and says that everything has changed and that he took too long to return.

Cersei is present at the breakfast of Joffrey and Margaery and tells Tywin about Shae being seen leaving Tyrion's chambers. During the wedding feast, Cersei sits with the rest of the royal family. When Brienne of Tarth approaches the king and Margaery, she bows and congratulates them on their marriage.

Cersei quickly points out that she bowed instead of performing a curtsy. She then thanks Brienne for bringing her brother back and asks her if she loves Jaime. Brienne responds by walking off.

After Margaery says that the leftovers are going to the poor, Cersei kisses her on the cheek and says she is an inspiration to them all. Shortly after, she goes over to Pycelle, who is harassing a young woman. Cersei tells Pycelle to leave her alone and says that she should get Qyburn to examine her. Pycelle mocks Qyburn, but Cersei responds by ordering Pycelle to go to the kitchens and order the cooks to give the leftovers to the dogs instead. Pycelle is reluctant to do so, but Cersei threatens to have him killed if he does not. Cersei and Tywin meet Oberynand Ellaria and the four get into a heated discussion when Cersei hypocritically mocks Ellaria's baseborn origins despite the fact that her own children are also bastards (and born out of incest no less).

Joffrey then makes his speech, publicly embarrassing Tyrion, much to Cersei's delight. Joffrey then begins to choke on his wine, causing him to gasp for air and collapse. Cersei rushes over to her son, who points towards Tyrion. He then dies in her arms, blood flowing from his eyes and mouth from the effects of the strangler. In a blind rage, she accuses Tyrion and has him arrested. Upon noticing that Sansa has vanished, she immediately begins to suspect her too and petulantly demands to know her whereabouts.

Cersei is mourning Joffrey while Tywin arrives and immediately begins instructing Tommen on the qualities of a good king, much to her annoyance. After the two leave, Jaime arrives to comfort Cersei. She breaks down into tears and asks Jaime to avenge their son by killing Tyrion. Jaime is not convinced that Tyrion was behind the murder and tells Cersei that there will be a trial, but she does not care. He tries to comfort her through his affections. Cersei refuses initially, but Jaime is aggressive. Cersei insists that the sept during a private viewing of their son's corpse is a highly inappropriate place for sex, and asks Jaime to stop, saying "It isn't right, it isn't right..." and Jaime refuses to stop, saying, "I don't care, I don't care...". They proceed to embrace and have rough, angry sex on the floor next to Joffrey's corpse.

Cersei calls Jaime to his chambers, but only to know about Kingsguard formations for protecting Tommen. She then asks why Catelyn Stark released him from his captivity. Jaime replies that he swore by all the gods that he would bring back Catelyn Stark's daughters to her. Cersei questions his loyalty to their enemies, but Jaime states that he only did it so he could return to her. She then asks if he could track down and kill Sansa Stark, believing that she schemed with Tyrion to murder Joffrey. Jaime remains silent. He then tries to convince Cersei that Tyrion is innocent, but she refutes that he has always pitied their little brother and firmly believes that Tyrion is the monster that killed their son. Cersei tells Jaime that she wants four men at Tommen's door and abruptly dismisses him, referring to him only as "Lord Commander", showing that their relationship has almost completely deteriorated.

Cersei is present at the coronation of her son, Tommen. Seeing Margaery at the coronation, Cersei tells her that she understands that Joffrey was a monster, but as her first child, Cersei still loved him.

She also believes the newly crowned Tommen will make a good and decent king, but he needs guidance. Cersei asks Margaery if she is still interested in being queen. Margaery says she will need to speak to her father about the matter.

Cersei is present at a small council that discusses the threat of Daenerys Targaryen, who they learn has recently conquered Meereen. Cersei doubts that Daenerys is a credible threat to the Iron Throne, a view not shared by the rest of the council. When Varys mentions that Sandor Clegane has been spotted in the Riverlands, Cersei recounts him as being both a coward and a traitor to the crown.

At Tyrion's trial, Cersei is verbally confronted by Tyrion, who angrily declares his innocence, but tells her how he wishes he could have been the one to murder Joffrey and that he felt the boy deserved it.

Cersei bribes Bronn to sway him from being Tyrion's champion in his trial by combat by arranging for him to marry Lollys Stokeworth, and later she approaches Gregor Clegane and enlists him as her champion.

Initially worried for the possibility of Clegane's failure, as Tyrion's champion, Oberyn Martell, has more passion throughout the fight, as Clegane killed his sister, Elia Martell. However, this ultimately proves to be Oberyn's downfall, as Gregor manages to maneuver him to the ground and crush his skull. She watches proudly as the Mountain defeats him and smiles as their father sentences Tyrion to death. She later sees to the treatment of Ser Gregor's wounds.

Cersei confronts her father and defiantly asserts once again that she will not consent to marry Loras Tyrell. When Tywin insists, she shocks him further by confirming for the first time to his face that the rumors about her relationship with her twin brother are in fact true. Disgusted, she leaves Tywin's quarters and proceeds to find Jaime. Though they still disagree on the fate of their younger brother, she approaches Jaime and kisses him passionately. She reaffirms her love for him and her wishes to continue their relationship regardless of what others may say. She kisses his gold hand as a symbol of her acceptance, and he makes love to her.

Season 5
Escorted by Ser Meryn, Cersei walks to the Great Sept of Baelor for Tywin's funeral, surrounded by numerous lords and ladies, including Margaery, who she glances at suspiciously. Cersei is stopped by the High Septon, who suggests to her that they start soon, since lords and ladies have come from all over Westeros, but she says they will wait a little longer while she has a moment alone with Jaime and their father's corpse.

Inside, Jaime warns that all the power and prestige their father built for House Lannister belongs to them now, and that once everyone sees that Tywin is truly dead, their enemies will do everything they can to take it away from them. Cersei bluntly states that their true enemy is Tyrion and that Jaime is partly responsible for Tywin's death since he was the one who released their father's murderer, and then she leaves him.

Starting here, new series arc
Later, during Tywin's wake, Cersei is approached by Loras, who babbles on and on, but she ignores him, as she is intently watching Tommen and Margaery sharing a few words and holding hands. Pycelle offers his condolences, yet she completely ignores him as well. She is then approached by Lancel, who has been left scarred from his wounds at the Blackwater. While they have a private moment, He tells her to remain strong for their family, and warns her of a new movement of religious zealots known as the Sparrows, telling her that they will ask her for her forgiveness for their "unnatural" relationship, and for serving King Robert the wine that ultimately led to his death. After Lancel leaves, Kevan arrives and apologises for the appearance of his son, but Cersei comforts him by saying Lancel will grow out of this phase eventually. Kevan hopes so, telling Cersei that Lancel is leaving King's Landing for the Riverlands to marry a Frey girl, and that he may never return. She and Kevan then witness the appearance of several Sparrows, with Kevan saying they never would have dared to appear if Tywin were alive.

Later, Cersei summons Jaime to show him a box she's received, alongside a letter. Reading the letter, it says that Prince Doran Martell is demanding the execution of the Mountain as he admitted to killing Elia and her children in his duel with Prince Oberyn. Inside the box, they find a stuffed Red Viper holding Myrcella's necklace in its jaws. Cersei is both unnerved and unsurprised by the threat as Dorne blames the Lannisters for the deaths of Elia Martell and her children. Acknowledging Cersei's distress, Jaime makes a promise: "I'm going to Dorne. And I'm bringing our daughter home." The next morning, Qyburn arrives with the head of the Mountain, and Jaime arrives with two other Kingsguard including Arys Oakheart and Balon Swann. Cersei also orders Jaime to recruit Bronn for the trip, and to give him a letter to guarantee his service.

Later, two men bring Cersei the head of a dwarf. She's disappointed it's not her brother's, but donates the head to Qyburn's lab. Qyburn asks Cersei if the other head he altered and provided for Ser Jaime was sufficient, to which Cersei agrees.

Cersei presides over the Small Council and doles out new titles on Tommen's behalf: Qyburn is named Master of Whisperers, and Mace Tyrell takes on the additional title of Master of Coin. When Cersei appoints her uncle Kevan as Master of War, he rejects the offer. "I did not return to the capital to serve as your puppet," he says, emphasising that Tommen should attend the meetings himself. Kevan reminds Cersei she's nothing more than Queen Mother, and he decides to return to Casterly Rock. Cersei is left dissatisfied with Kevan's departure.

On the way to the Sept of Baelor, Cersei is incensed to find the crowd cheering Margaery's name. She remains stone-faced throughout the ceremony. The following morning, Cersei walks with Tommen along the battlements and tries to subtly turn him against his wife, but Tommen scares her by asking her if she'd prefer to go back to Casterly Rock. Cersei goes to confront Margaery, finding her bragging about Tommen's libido to her handmaidens. Cersei tries to verbally spar with Margaery as she used to, but the younger queen is in her prime, and assaults Cersei with backhanded compliments and subtle barbs. Realizing that she is losing, Cersei departs.

Later on, Cersei and the Small Council are visited by the High Septon, who has recently been abducted from Littlefinger's brothel and forced to walk naked through the streets of King's Landing. Cersei is mildly amused and not particularly sympathetic to the man's plight. She later pays a visit to the so-called High Sparrow. Assuming a much more conciliatory and humble tone than she ever has before, Cersei talks with him about the relationship between the Faith and the Crown, and also mentions that she's had the High Septon thrown in the Black Cells.

Cersei meets with the High Sparrow again and names him as the new High Septon, allowing him to reinstate the Faith Militant, a military order dedicated to defending the Faith of the Seven which was abolished two centuries ago. Almost immediately, Ser Loras Tyrell is arrested during the ensuing rampage for his alleged homosexuality, which Margaery believes is part of Cersei's plan to divide her and Tommen. Tommen confronts his mother and demands that Loras be released, but she calmly tells him that she didn't order his arrest, although her tone of voice seems to imply that she knew beforehand that Loras would be arrested and allowed it to happen in order to interfere with Margaery and Tommen's relationship.

Olenna soon arrives at King's Landing to speak with Cersei, also knowing that she orchestrated the arrest of Loras. After a brief but tense meeting with Olenna in which mutual insults are exchanged, Cersei takes part in the trial of Loras Tyrell. Though she appears incredulous towards the accusations, it is clear that she has played a part in engineering the entire process. She plays the same trump card that she once did with Tyrion and Shae by making a deal with Olyvar, Loras's lover, to testify against Loras in exchange for being spared from persecution. As a result of her schemes, Loras is to be put on trial, and Margaery is imprisoned for giving false testimony.

When Tommen loses his appetite over his wife's arrest, Cersei attempts to calm him down, and gives him a long speech about how as King, he will be faced with many circumstantial situations in which he will be powerless to act, as his father King Robert sometimes was, though she proclaims her love for him by claiming that she will do anything it takes to protect him, even if it means burning down entire cities, and weeps as she cuddles her son. She later visits Margaery in her cell, bringing her food and trying to convince her that she will do her utmost to get her out, but Margaery angrily counters that she knows Cersei engineered both her arrest and Loras' in order to retain control over her son, and shouts at her to get out, throwing the bowl of stew at her and calling her a "hateful bitch". Cersei leaves and finds the High Sparrow beneath the Sept of Baelor, who tells her that both Loras and Margaery will be put on trial, and certain septons, including himself, will stand as judges.

Cersei thanks the High Sparrow for his actions, and he proceeds to give her a speech about the history of the Sept. He tells her that the Tyrells' falsehoods will be revealed for all the world to see, as in the case of everyone, including Cersei herself. Several Sparrows arrive presenting one of her handmaidens, a bruised and battered Bernadette, with her confessing that she had witnessed Cercei's adulterous affair with her cousin Lancel on many occasions. Cersei is arrested, and taken to a cell by a group of Septas. She looks at one Septa, and threatens her that her face is the last thing she will see before she dies a painful death.

Cersei remains in custody for the next few days, visited only by Septa Unella, whom she threatened days prior when first imprisoned. The Septa offers her water in return for a confession, but she repeatedly refuses. She is later visited by Qyburn, who informs her that the charges against her are treason, incest and regicide, which she dismisses as lies, though Qyburn reminds her that the Faith will not depend on physical proof as much as the Crown does in her upcoming trial. She asks about Jaime, but Qyburn claims there has been no response, and further tells her that Pycelle has summoned Kevan back to the capital and Tommen has fallen into a depression.

Qyburn, however, tells Cersei that she can still confess, but she refuses. Before he leaves, Qyburn tells her that his work is progressing. Later, when Unella visits her again, Cersei offers to make her a Lady of the capital or have her killed, depending on whether or not she will help her. Unella pours her water on the floor and leaves. Cersei finally abandons her pride and licks the water from the dungeon floor, breaking into tears.

A day later, Cersei is brought before the High Sparrow to confess her sins. She confesses of adultery with Ser Lancel Lannister, but denies her incestuous relationship with her brother Jaime. She begs to be allowed to go to the Red Keep to see her son Tommen. The High Sparrow accepts, but states that she has to stand trial.

Cersei is brought to a cell where she is stripped naked and washed, and her long blonde hair is cut short. She is then brought outside, where she is forced to walk completely naked through the streets of King's Landing, from the Great Sept of Baelor to the Red Keep as punishment. She is escorted through an angry mob, who hurl filth and vicious insults at her.

With bloody feet, Cersei makes it to the Red Keep. Upon entering the gates, Cersei finds her uncle Kevan Lannister, Grand Maester Pycelle, her handmaiden Bernadette and Qyburn waiting for her. Qyburn attempts to comfort her by covering her body with a cloak. Heavy footsteps are heard, and Qyburn introduces Cersei to the newest member of the Kingsguard: a seven foot tall man in heavy armour named Ser Robert Strong.

the Mountain, who has his face hidden constantly due to Qyburn's experimentation and the effects of manticorevenom. Qyburn suggests Cersei to go inside to have a look at her feet, which are badly injured, when the huge knight lifts her up and carries her away. Qyburn informs Cersei that Ser Robert has taken a vow of silence, and has pledged not only to be her champion in a trial by combat, but to also kill all those who would see her harmed.

Season 6
A man in King's Landing brags about revealing himself to Cersei during her walk of shame. When the man leaves the crowd to urinate, the gigantic Kingsguard knight walks up behind him and brutally kills him by smashing his head against the wall before reporting back to Cersei.