The Definitive Guide to the GOT Season One Cast: Characters, Actors, and Key Facts

The first season of Game of Thrones introduced a sprawling cast whose fates would define a generation of television. This guide provides a detailed, fact-focused overview of the main cast, their roles in the story, and the real-world actors who brought them to life. From the warring noble houses to the mysterious forces beyond the Wall, these performances laid the foundation for the global phenomenon.

When HBO’s Game of Thrones debuted in 2011, it immediately distinguished itself with a sprawling, morally complex narrative and a large ensemble cast. The show’s inaugural season focused on the political intrigue of King’s Landing and the existential threat in the North, setting a tone that balanced grim realism with fantastical elements. This article examines the core cast of that debut season, detailing their houses, motivations, and the actors who embodied these pivotal characters.

The political and social structure of the Seven Kingdoms is defined by its great houses, each with a distinct leader whose actions drive the plot forward in the first season.

* **Eddard "Ned" Stark:** The Warden of the North and Lord of Winterfell, summoned to King's Landing to serve as the new Hand of the King. His rigid sense of honor and duty places him in direct conflict with the court's Machiavellian politics.

* **Robert Baratheon:** The ruling king, whose drunken hunting expedition and misplaced trust set the entire conflict in motion. His easygoing nature masks a dangerous instability.

* **Cersei Lannister:** The queen, whose incestuous relationship with her brother Tyrion and ruthless ambition for her children's future define her actions.

* **Tyrion Lannister:** The "Imp," Cersei's dwarf brother, whose wit and intellect make him a target for scorn but a valuable political operator.

* **Jaime Lannister:** Cersei's twin and a legendary knight, known as "Kingslayer" for his assassination of the Mad King. His honor is in conflict with his loyalty to his sister.

* **Viserys Targaryen:** The exiled prince, clinging to his family's legacy and dreaming of reclaiming the Iron Throne through brute force.

* **Jon Snow:** Ned Stark's bastard son, who joins the Night's Watch and travels north to confront the supernatural threat. His lineage remains a closely guarded secret.

* **Daenerys Targaryen:** The last surviving member of House Targaryen, sold into a political marriage in the distant Dothraki sea. Her journey from frightened girl to "Mother of Dragons" begins here.

The success of this intricate political drama rests entirely on the actors who inhabited these complex roles, many of whom became international stars through their performances.

Sean Bean portrayed Eddard Stark, the show's initial moral anchor. Bean, known for roles in *The Lord of the Rings* and *Sharpe*, brought a gravitas and tragic nobility to the character, famously stating that he accepted the role because he wanted to play a hero who died at the end of the first book. His stoic performance grounded the series' early episodes, making his shocking demise in the season finale—a pivotal moment for the show—devastatingly effective.

Mark Addy played King Robert Baratheon with a boisterous, larger-than-life energy that masked the character's underlying drunkenness and incompetence. Addy, a familiar face from British television, imbued Robert with a sense of weary charm that made his violent end at the boar hunt both believable and darkly ironic.

Peter Dinklage, a veteran character actor, delivered a career-defining performance as Tyrion Lannister. Tasked with countering the character's book description as monstrous, Dinklage instead portrayed a man defined by his intelligence and wit. His chemistry with Lena Headey, who played his sister Cersei, formed one of the show's core dynamics, blending familial love with bitter hatred. Dinklage’s casting was a masterstroke, proving that a little person could carry a major dramatic role with unmatched charisma.

Headey’s Cersei Lannister was a revelation, capturing the character’s venomous ambition and terrifying fragility. Her scenes with Dinklage crackled with tension, establishing a sibling rivalry that fueled much of the show’s early drama. Headey navigated Cersei’s transformation from a protective mother to a full-blown tyrant with chilling precision.

Nikolaj Coster-Waldau played Jaime Lannister, a role that required shedding the character’s initial "Kingslayer" villainy to reveal a conflicted warrior. Coster-Waldau brought a brooding intensity to the role, making Jaime’s eventual shift from despised figure to a man grappling with his own honor one of the season’s most compelling arcs.

* **Lena Headey as Cersei Lannister**

* **Peter Dinklage as Tyrion Lannister**

* **Nikolaj Coster-Waldau as Jaime Lannister**

* **Sean Bean as Eddard Stark**

* **Mark Addy as Robert Baratheon**

* **Conleth Hill as Varys**

* **Jerome Flynn as Bronn**

* **Harry Lloyd as Viserys Targaryen**

* **Emilia Clarke as Daenerys Targaryen**

* **Kit Harington as Jon Snow**

* **Sophie Turner as Sansa Stark**

* **Maisie Williams as Arya Stark**

* **Carice van Houten as Melisandre**

* **Rory McCann as Sandor "The Hound" Clegane**

* **Iain Glen as Jorah Mormont**

The younger generation of Stark siblings provided the show’s emotional core. Sophie Turner’s Sansa evolved from a romantic dreamer into a hardened survivor, while Maisie Williams’s Arya shed her noble upbringing to become a hardened assassin. Their storylines, centered on survival and identity, resonated deeply with audiences. Jerome Flynn’s Bronn provided the show’s primary comic relief, a sellsword motivated purely by coin, whose sarcastic asides punctuated the show’s darker themes.

Perhaps the most transformative casting was that of Emilia Clarke as Daenerys Targaryen. Tasked with leading a foreign dynasty, Clarke imbued the character with a vulnerable determination that made her rise to power feel earned. Her early scenes, struggling to survive in the Dothraki khalasar, showcased an actress capable of conveying volumes with subtle expressions. Similarly, Kit Harington’s Jon Snow was defined by his brooding restraint, his status as an outsider shaping a performance that balanced duty with a deep, often repressed, sense of justice. The mystical elements of the season were anchored by Carice van Houten’s Melisandre, whose chilling portrayal of the Red Priestess introduced a sense of ancient, terrifying power.

The foundation laid by this ensemble in the first season established the template for the show’s exploration of power, loyalty, and fate. Each actor’s interpretation became the definitive version of their character, for better or worse, as the series progressed into uncharted literary territory. The chemistry between the Stark children, the volatile relationship between the Lannister siblings, and the burgeoning power of the Targaryen heirs were all established in this critical debut, proving that the world of Westeros was populated by characters worthy of the epic scale of their story.