When HBO premiered Winter Is Coming in April 2011, it launched a massive ensemble cast that redefined modern television. Finding the complete cast of game of thrones season 1 who starred in the debut episode requires looking beyond the main credits to see the guest stars and background players who built Westeros from scratch. The pilot episode established three distinct geographical and narrative centers: the frozen wastes beyond the Wall, the sprawling fortress of Winterfell, and the sun-drenched free city of Pentos across the Narrow Sea.
Understanding who actually appeared in this first broadcast requires separating the final airing from the notoriously troubled unaired pilot. Several actors recast before the series went to air—such as Jennifer Ehle, who originally played Catelyn Stark before Michelle Fairley took over—won't be found on screen. The official debut episode broadcast on HBO introduced viewers to a sprawling web of noble houses, royal hangers-on, and doomed scouts.
The Core House Stark Lineup
The heart of the premiere beats inside Winterfell, where the Stark family gathers before King Robert Baratheon's royal procession arrives. Sean Bean anchors the episode as Lord Eddard "Ned" Stark, the honorable Warden of the North whose rigid code of ethics drives the primary plot. Michelle Fairley steps into the role of his wife, Lady Catelyn Stark, setting an immediate tone of maternal protection and quiet suspicion toward outsiders.
The younger generation of Starks introduced in this debut episode includes:
- Richard Madden as Robb Stark, the eldest legitimate son.
- Sophie Turner as Sansa Stark, the demure eldest daughter.
- Maisie Williams in her breakout role as Arya Stark, the rebellious tomboy.
- Isaac Hempstead-Wright as Bran Stark, whose fateful climbing accident closes the episode.
- Art Parkinson as the youngest Stark child, Rickon Stark.
Rounding out the Winterfell household is Joseph Mawle as Benjen Stark, Ned's brother and a sworn ranger of the Night's Watch. Donald Sumpter appears as Maester Luwin, the castle's scholarly advisor, while Ron Donachie plays Master-at-Arms Rodrik Cassel. Jamie Sives rounds out the inner circle as Jory Cassel, captain of the Stark guards.
The Royal Entourage: House Baratheon and Lannister
When the royal party rolls into Winterfell, the screen fills with tension between the crown and the northern hosts. Mark Addy stars as King Robert Baratheon, a boisterous, weary ruler drifting far from his warrior past. Lena Headey brings icy detachment to her role as Queen Cersei Lannister, while Nikolaj Coster-Waldau makes an immediate impression as her twin brother, Ser Jaime Lannister, the Kingslayer.
Peter Dinklage steals several early scenes as Tyrion Lannister, the sharp-tongued dwarf who refuses to let society's mockery dictate his life. Jack Gleeson introduces pure villainy as Prince Joffrey Baratheon, alongside royal children Callum Wharry as Tommen Baratheon and Aimee Richardson as Myrcella Baratheon. Rory McCann looms large as Sandor Clegane, better known as "The Hound," serving as the ruthless bodyguard to the royal family.
Aidan Gillen makes a brief, calculating appearance as Petyr Baelish, nicknamed "Littlefinger", establishing his scheming nature right away. Alfie Allen fills out the noble roster as Theon Greyjoy, the ward and hostage of Winterfell whose loyalties remain deeply fractured.
Across the Narrow Sea: Targaryen and Dothraki
Far away from the chill of the North, the episode introduces the last remnants of the fallen Targaryen dynasty. Harry Lloyd plays Viserys Targaryen, a desperate, abusive exile willing to sell his own sister to reclaim the Iron Throne. Emilia Clarke stars as Daenerys Targaryen, starting her journey as a timid pawn before her wedding night alters her trajectory forever.
Jason Momoa commands the screen without speaking English as Khal Drogo, the fearsome warlord of the Dothraki horse-lords. Iain Glen appears as Ser Jorah Mormont, the exiled knight who pledges his sword to Daenerys. Roger Allam makes his sole season appearance as Magister Illyrio Mopatis, the wealthy Pentoshi merchant who brokers the marriage between Daenerys and Drogo. Dar Salim features as Qotho, one of Drogo's bloodriders.
Beyond the Wall and Minor Roles
The episode opens with a chilling sequence north of the Wall that establishes the supernatural threat of the White Walkers, documented thoroughly by the Wikipedia summary of Winter Is Coming. This sequence introduces a separate roster of guest actors:
- John Standing as Jon Arryn, whose mysterious death before the events of the show kicks off the narrative.
- Rob Ostlere as Waymar Royce, the arrogant young ranger of the Night's Watch.
- Bronson Webb as Will and Dermot Keaney as Gared, the scouts who witness the horror of the undead.
Kit Harington makes his debut as Jon Snow, the bastard son of Ned Stark who feels isolated at Winterfell and ultimately chooses to join the Night's Watch. Susan Brown appears as Septa Mordane, tasked with instructing the Stark girls in needlework and ladylike etiquette. Kristian Nairn makes his iconic first appearance as Hodor, the gentle giant stablehand. Esmé Bianco features as Ros, a northern sex worker who later plays a larger role in King's Landing politics.
Behind the Casting Choices
Showrunners David Benioff and D.B. Weiss cast a mix of seasoned British theater veterans and relative newcomers to maintain authenticity. Many actors spent months auditioning across London and New York. For instance, Sean Bean was always the top choice for Ned Stark, while Peter Dinklage was author George R.R. Martin's unarguable first pick for Tyrion, saving the production from an extensive casting search for those specific roles.
The production relied heavily on practical locations, shooting the Winterfell scenes in Northern Ireland while moving the Dothraki wedding sequences to Malta and Morocco. This physical separation helped the actors naturally embody the cultural isolation of their respective characters during the tight shooting schedule in late 2009.
Frequently Asked Questions
Did any actors from the unaired pilot appear in the broadcast episode?
No speaking roles from the leaked or unaired pilot carried over identical framing into the final broadcast version due to extensive rewrites, set changes, and recasting decisions overseen by director Tim Van Patten.
Who was originally cast as Daenerys Targaryen before Emilia Clarke?
Tamzin Merchant was originally cast as Daenerys in the unaired pilot, but left the production before HBO picked up the series for a full season, leading to a complete re-filming of her scenes with Clarke.
How many main characters died in the very first episode?
While nobody from the main title sequence dies in episode one, Jon Arryn is already dead before the credits roll, and multiple members of the Night's Watch scouting party perish in the cold open.
Why did HBO reshoot the pilot episode?
The original pilot suffered from unclear storytelling regarding character relationships, prompting executives to order structural reshoots, change directors, and replace multiple primary cast members to ensure viewers could easily track the massive ensemble.
