Adapting a vast and complex book series like A Song of Ice and Fire into a TV show naturally leads to the need for major character adjustments. In Game of Thrones, many beloved characters were reworked, simplified, or had their storylines changed to meet the needs of the show.
These alterations have ignited much debate among fans, especially when the show’s depiction of a character sharply contrasts with the original portrayal by George R.R. Martin. From missing traits to entire story arcs being omitted, these differences highlight the creative decisions and challenges of bringing such a rich world to the screen.
10. Sansa Stark

Sansa Stark’s development in Game of Thrones is among the most fascinating, yet her arc in the series diverges greatly from how she is portrayed in George R.R. Martin’s A Song of Ice and Fire. In the books, Sansa stays in the Vale under Petyr Baelish’s guidance, learning the complexities of court politics and manipulation. Her growth is slow and subtle, revealing her growing awareness of the perilous world she’s caught in.
Under the guise of Alayne Stone, Sansa becomes increasingly skilled at navigating the power struggles of the Seven Kingdoms, learning from Littlefinger while grappling with her sense of self and the weight of her past. This gradual, intricate development allows readers to see Sansa evolve into a complex figure, strengthening both her resilience and her cunning over time.
In contrast, the TV adaptation accelerates Sansa’s growth, often sacrificing the depth of her transformation. The show combines several of her plotlines, most notably blending her experiences with Jeyne Poole’s tragic fate at the hands of Ramsay Bolton—an event absent from the books.
While this alteration emphasizes Sansa’s resilience and eventual ascent to power, it also sparked criticism regarding the portrayal of her personal agency and emotional struggles. Despite these shifts, Sansa’s journey in the series still resonates with many, especially her rise as the Lady of Winterfell, symbolizing her development into a determined and independent leader.
9. Tyrion Lannister

Tyrion Lannister is one of the most layered and multifaceted characters in the books. A brilliant, often sarcastic, and at times merciless figure, he battles deep self-hatred and feelings of being unloved by his family. In contrast to the TV series, his physical appearance in the books is far more striking and intense, reflecting the darker aspects of his character.
In the novels, Tyrion is portrayed with mismatched eyes—one green, one black—and a far more grotesque appearance. He is a dwarf with an oversized head, a pronounced brow, and crooked teeth. After the Battle of the Blackwater, he suffers a severe injury that leaves him even more disfigured; his nose is nearly severed, resulting in a face badly scarred by the wound.
In the HBO series, however, Tyrion’s appearance is considerably toned down. Played by Peter Dinklage, he is shown as a handsome man with only a few minor scars after the battle, and his injury is reduced to a single noticeable scar on his cheek. After he kills his father, Tywin Lannister, Tyrion’s character takes a darker path in the books. His journey across Essos becomes filled with bitterness, self-destruction, and an intense desire for revenge against those who have wronged him.
This darker portrayal of Tyrion adds more depth to his character, illustrating a man dealing with the consequences of his actions and the grim nature of his reality. In contrast, the television adaptation downplayed many of these somber aspects, focusing instead on Tyrion’s wit and humor. While the show captured his sharp tongue and strategic intelligence, it often reduced his character to comic relief, especially in the later seasons. His political missteps and controversial decisions in the final season also left many fans feeling disillusioned, as they believed the show strayed too far from the complex, morally ambiguous character seen in the books.
8. Euron Greyjoy

Euron Greyjoy in the series is a far cry from the intimidating and enigmatic figure presented in Martin’s novels. In the books, Euron is a far more intricate and terrifying character. Known as 'Crow’s Eye' due to the eyepatch he wears, he is a ruthless pirate and sorcerer who engages in dark magic, utilizes a variety of mystical artifacts, and emanates a mysterious, almost otherworldly presence.
Euron Greyjoy’s return to the Iron Islands is marked by both fear and reverence. Coming back from exile with a fleet of ships, a devoted crew, and a mysterious horn called Dragonbinder, he claims it has the power to control dragons. Euron’s ambitions are vast, not only seeking the Iron Throne but also aiming to harness immense power through mystical means. In the books, his backstory is far richer, including his travels to the ruins of Valyria and his claim to possess a dragon egg.
In contrast, the television adaptation of Euron is far less complex and significantly diminished in menace. Instead of the dark, scheming sorcerer from the books, show-Euron is presented as a brash and over-the-top pirate with a penchant for violence and theatrics. His character is reduced to a swaggering, almost ridiculous villain, more interested in personal indulgence than in the grand, sinister plans that define him in the novels.
Key aspects of his character, such as his mastery of dark magic and the Dragonbinder horn, are entirely absent from the series. This simplified version of Euron disappointed many fans, as the TV portrayal lacks the depth and chilling presence that made the character so compelling in the books.
7. Brienne of Tarth

Brienne of Tarth, one of the most beloved characters in *Game of Thrones*, is shown as a noble and highly skilled warrior who defies traditional gender expectations through her strength and honor. However, her story in the TV series differs significantly from her arc in the novels. In the books, Brienne's character has a much more intricate and nuanced journey.
After receiving Oathkeeper from Jaime Lannister, she embarks on a perilous and long journey to find Sansa Stark. Her quest is filled with challenges that put her loyalty, determination, and sense of self to the test. Along the way, she experiences profound moments of introspection and grapples with moral dilemmas, revealing both her inner conflicts and external struggles.
The show simplifies much of Brienne’s arc, honing in on her dynamic with Jaime, which is portrayed with a more overtly romantic tone. Their relationship is intricate, marked by mutual respect and unspoken emotions. However, in the books, their paths diverge, leaving unresolved tension between them.
While Jaime’s knighthood of Brienne in the final season is a memorable and impactful moment in the series, it does not occur in the books. Additionally, the TV adaptation skips over important scenes, such as her intense encounter with Lady Stoneheart, the resurrected Catelyn Stark, who commands Brienne to kill Jaime.
6. Stannis Baratheon

Stannis Baratheon, a key character in George R. R. Martin’s A Song of Ice and Fire series, is portrayed quite differently in the novels compared to the television show. In the books, Stannis is a stern, duty-bound leader, often seen as cold and uncompromising. Nevertheless, his actions are fueled by a deep sense of justice and obligation, even when they contradict his personal wishes.
Stannis Baratheon’s unwavering dedication to his perceived rightful claim to the Iron Throne paints him as a more multifaceted and sympathetic character in the books. His reliance on Melisandre and her dark magic is also depicted with more internal struggle, as he often wrestles with the ethics of his decisions and the true nature of her powers. In the show, their relationship is portrayed as having a stronger influence on him, often implying that he is more susceptible to her sway than he is in the books.
In contrast, the television adaptation simplifies Stannis’s character, frequently presenting him as a stern and unapproachable figure with less emphasis on his moral dilemmas. One of the most significant and controversial differences is his decision to sacrifice his daughter Shireen to the flames, a plot point that is hinted at but not carried out in the books. This action, depicted as a desperate attempt to win the war, was considered by many viewers to be a betrayal of his character’s complexity and the nuanced internal conflicts explored in the novels.
5. Jeyne Westerling/Talisa Maegyr

In George R. R. Martin’s books, Jeyne Westerling is the woman Robb Stark marries after a moment of vulnerability following the death of his brothers. Jeyne comes from a noble yet lesser-known house in the Westerlands, secretly loyal to the Lannisters, adding layers of political intrigue to her character and her marriage to Robb.
Her relationship with Robb is largely driven by a sense of honor, as he marries her after they sleep together, and she remains loyal to him despite the political complexities. In the books, Jeyne’s story is tragic yet understated—she does not participate in the Red Wedding, and her fate remains uncertain as she is left at Riverrun, under the watchful eye of the Lannisters.
In the HBO adaptation, Jeyne Westerling’s role is substituted by Talisa Maegyr, a healer from Volantis who crosses paths with Robb on the battlefield. Talisa is an entirely new character introduced for the series, embodying a more idealistic and romantic love story compared to the politically motivated marriage in the books. The shift from Jeyne to Talisa has a profound impact on Robb’s narrative, giving it a different tone and depth. Talisa is depicted as independent and strong-willed, in stark contrast to Jeyne's more traditional and dutiful character.
This alteration simplifies the intricate political dynamics of the Westerling family and diminishes the conflict between Robb's obligations and his personal desires. Talisa’s role in the Red Wedding and her tragic death—along with her unborn child—heightens the emotional intensity of the scene. However, this change diverges considerably from Martin's original plot, leaving readers with a dramatically different interpretation of Robb’s tragic fall.
4. Doran Martell

In the books, Doran Martell is portrayed as a brilliant strategist, patient and methodical in his long-term approach. As the Prince of Dorne, he is driven by a desire to avenge his sister Elia’s brutal death during Robert’s Rebellion. Doran is introspective, weighed down by his responsibilities to his people and his quest for justice. His plans are elaborate, involving covert alliances and slow-building schemes that unfold over time, showcasing his political acumen and a deep sense of duty.
Conversely, the show portrays Doran Martell as a less complex, more passive character with limited influence. His screen time is minimal, and many of his schemes are either glossed over or completely omitted. His complicated political relationship with his daughter Arianne, a key figure in the books, is entirely absent from the show. The series also departs from the book’s narrative when Doran dies suddenly at the hands of Ellaria Sand and the Sand Snakes, whereas in the books, his death is a pivotal moment in a larger political plot with far-reaching consequences for the Martell family.
3. Lady Stoneheart

Lady Stoneheart, the resurrected and vengeful version of Catelyn Stark, stands as one of the most pivotal characters in the books but was entirely left out of the Game of Thrones television series. In the novels, after Catelyn is brutally slain at the Red Wedding, she is revived by Beric Dondarrion, who sacrifices his life to bring her back. However, she returns as a darker, more twisted incarnation, consumed by an insatiable thirst for vengeance against those who wronged her family.
Her appearance is described as chilling, with the remnants of her wounds from the Red Wedding still haunting her visage. Leading the Brotherhood Without Banners, Lady Stoneheart embarks on a savage campaign of vengeance, targeting the Freys, Lannisters, and anyone she holds responsible for the massacre of her family. Her character adds a chilling layer of relentless retribution and the supernatural to the narrative, establishing her as one of the most tragic and feared figures in the books.
In stark contrast, the showrunners opted to omit Lady Stoneheart completely from the television series, a decision that left many fans of the books disappointed. This exclusion meant that viewers never witnessed the darker evolution of Catelyn's character or the profound impact her vengeful actions had on the broader storyline.
The absence of Lady Stoneheart also dramatically shifted the arcs of several other characters, including Brienne of Tarth and Jaime Lannister, who share significant interactions with her in the novels. Without Lady Stoneheart, the show’s exploration of themes like resurrection, justice, and the haunting repercussions of betrayal felt less nuanced and lacked the deep ties to the Stark family’s tragic legacy.
2. Ser Barristan Selmy

Ser Barristan Selmy is a highly respected and legendary knight in the books, known for his unwavering honor and loyalty. After being dismissed from the Kingsguard by Joffrey Baratheon, Barristan seeks out Daenerys Targaryen in Essos and becomes one of her most trusted advisors.
In the novels, Barristan guides Daenerys through Meereen’s political landscape, offering wisdom in leadership and battle. He’s a formidable warrior and principled man, grappling with the moral complexities of serving a queen aiming to reclaim her throne. Barristan’s journey is rich and multifaceted, influencing key events in Daenerys’s court.
In contrast, the television adaptation cuts Barristan Selmy’s story short, killing him off unexpectedly in the fifth season. His death during a battle with the Sons of the Harpy shocked many fans, as it diverged significantly from his ongoing and important role in the books. This early demise deprived the show of a character who, in the source material, provides a crucial connection to the history and lore of Westeros.
Barristan’s impact on Daenerys’s decisions in Meereen is significant in the books, making his sudden exit in the show seem like a missed chance to explore his character’s depth. Killing him off early drew criticism from book readers who valued Martin’s careful crafting of Barristan’s narrative.
1. Asha Greyjoy/Yara Greyjoy

Asha Greyjoy, known as Yara in the television series, undergoes notable transformation from her book counterpart to the screen. In the novels, Asha is a fierce and resourceful leader, driven by a deep commitment to both her family and her people. Her leadership is rooted not just in her noble bloodline but also in her prowess as a warrior and a tactician, earning her respect among the Ironborn.
Asha plays a central role in the Greyjoy succession struggle, using both her intellect and charisma to garner support for her claim to the Seastone Chair. She strikes a delicate balance between her loyalty to her family and her own desire for independence and power. While Yara in the show retains much of Asha’s strength and leadership qualities, the character's depth is somewhat diluted for the screen.
The TV series omits several of Asha’s more complex relationships and political strategies. For example, in the books, Asha plays a pivotal role in the Kingsmoot, where the Ironborn choose their new ruler, boldly making her case for the throne while challenging traditional gender expectations. In contrast, the show shifts focus to her relationship with her brother Theon and her involvement in Daenerys Targaryen’s campaign. The series also portrays her as bisexual, with scenes showing her with both men and women. In the books, however, Asha is portrayed as heterosexual, with multiple male lovers.
