The HBO Game of Thrones prequel returns for Season 3 on June 21, with Team Black and Team Green heading toward some of the bloodiest battles in Targaryen history. After Season 2 ended with armies marching, dragons preparing for battle, and Aegon fleeing King’s Landing, the new season will bring back many of the show’s major players.
Here is your guide to the cast of House of the Dragon Season 3, from returning characters to new faces.
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House of the Dragon Season 3 Cast
Emma D'Arcy as Rhaenyra Targaryen
Emma D'Arcy as Rhaenyra Targaryen in 'House of the Dragon'Ollie Upton/HBO
Heading into Season 3, Rhaenyra appears ready to take a more aggressive approach. With new dragonriders on her side and Alicent offering her a path into King's Landing, she may be closer than ever to the throne. However, the war is also growing larger, bloodier and harder to control.
Outside of House of the Dragon, they are known for their work in Truth Seekers, Mothering Sundayand will appear in the Tom Cruisefilm Digger in 2026.
Matt Smith as Daemon Targaryen
Matt Smith as Daemon Targaryen in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Daemon has reaffirmed his loyalty to Rhaenyra after his strange and unsettling time at Harrenhal. With the Riverlands becoming a major battleground, his army and his dragon Caraxes could be crucial to Team Black's next moves.
Outside of House of the Dragon, Smith is best known for playing the Eleventh Doctor in Doctor Who and Prince Philip in The Crown.
Olivia Cooke as Alicent Hightower
Olivia Cooke as Alicent Hightower in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Alicent is politically isolated. Aemond has pushed her aside, Aegon has fled King’s Landing, and her attempt to make peace with Rhaenyra may already be falling apart. Her priority now appears to be protecting Helaena and surviving the consequences of Team Green’s choices.
Outside of House of the Dragon, Cooke is known for Bates Motel, Slow Horses, and Sound of Metal.
Ewan Mitchell as Aemond Targaryen
Ewan Mitchell as Aemond Targaryen in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Aemond is one of the most dangerous figures in the war. With Vhagar at his command and Aegon out of the capital, he has the power to steer Team Green into an even more brutal phase of the Dance of the Dragons.
Outside of House of the Dragon, Mitchell is known for The Last Kingdom, Saltburn and Wuthering Heights.
Tom Glynn-Carney as Aegon II Targaryen
Tom Glynn-Carney as Aegon II Targaryen in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Aegon is no longer in King’s Landing. Larys helped him escape the capital in the Season 2 finale, warning that his life was in danger whether Team Green won or lost the war. His survival could complicate Alicent’s attempt to hand the city to Rhaenyra.
Outside of House of the Dragon, Glynn-Carney is known for Dunkirk and The King.
Phia Saban as Helaena Targaryen
Phia Saban as Helaena Targaryen in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Helaena remains in King’s Landing under Aemond’s rule. Her relationship with her brother appears increasingly strained, especially after she tells him that he will not survive the war.
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Harry Collett as Jacaerys Velaryon
Harry Collett as Jacaerys Velaryon in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Jace remains one of Rhaenyra’s most important allies, but his position is complicated by the rise of the Dragonseeds. With new riders joining their cause and the Battle of the Gullet looming, Jace may have to prove his value in a war that is quickly becoming more dangerous.
Outside of House of the Dragon, Collett is known for Dolittle, Galavant and Dunkirk.
Bethany Antonia as Baela Targaryen
Bethany Antonia as Baela Targaryen in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Baela remains one of Team Black’s most valuable young players. With Jace preparing for a more dangerous phase of the war and the Velaryon fleet facing a major threat, Baela may be pulled closer to the front lines.
Outside of House of the Dragon, Antonia is known for Get Even, Doctor Who and Nolly.
Phoebe Campbell as Rhaena Targaryen
Phoebe Campbell as Rhaena Targaryen in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Rhaena may finally become a dragonrider. If she can claim the dragon she discovered, it could change her role in the war and give Team Black another powerful weapon.
Outside of House of the Dragon, they are known for Twofold and Modsomer Murders.
Steve Toussaint as Corlys Velaryon
Steve Toussaint as Corlys Velaryon in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, "The Sea Snake" remains one of Team Black’s most important allies. His fleet is central to Rhaenyra’s war effort, but Team Green’s alliance with the Triarchy could put his naval power directly at risk.
Outside of House of the Dragon, Toussaint is known for Prince of Persia: The Sands of Time, Before We Die and Small Axe.
Abubakar Salim as Alyn of Hull
Abubakar Salim as Alyn of Hull in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Alyn is positioned to become even more important as Corlys’ fleet faces the threat of the Triarchy. With the Velaryon line shaken by Rhaenys’ death, Alyn may have to prove he can carry the family name into the next stage of the war.
Outside of House of the Dragon, Salim is known for Raised by Wolves, Assassin’s Creed Origins and Jamestown.
Clinton Liberty as Addam of Hull
Clinton Liberty as Addam of Hull in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Addam’s new bond with Seasmoke makes him one of Rhaenyra’s most valuable assets. As the war expands and the Battle of the Gullet approaches, Addam could be pulled directly into the fight for control of the seas.
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Sonoya Mizuno as Mysaria
Sonoya Mizuno as Mysaria in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Mysaria could play a major role in Rhaenyra’s attempt to take King’s Landing. With her knowledge of the city, its secrets and its people, she gives Team Black an advantage that goes beyond dragons and armies.
Outside of House of the Dragon, Mizuno is known for Ex Machina, La La Land and Annihilation.
Fabien Frankel as Criston Cole
Fabien Frankel as Criston Cole in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Criston appears shaken by what the war has become. After Rook’s Rest and the horrors of marching through the Crownlands, he may continue to question the faith and purpose that once drove him, even as he remains one of Team Green’s most important military figures.
Rhys Ifans returns as Otto Hightower, Alicent’s father and the seasoned political operator who helped place Aegon on the Iron Throne. In Season 2, Otto was removed as Hand of the King after clashing with Aegon over how to handle the war.
Outside of House of the Dragon, Ifans is known for Notting Hill, The Amazing Spider-Man and The King’s Man.
Matthew Needham as Larys Strong
Matthew Needham as Larys Strong in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Larys has helped Aegon escape King’s Landing, betting his own future on the injured king’s survival. With Aemond in control of the capital and Alicent trying to hand the city to Rhaenyra, Larys may be one of the few people who knows where Aegon really is.
Outside of House of the Dragon, Needham is known for Napoleon, Sherlock and The Ritual.
Freddie Fox as Gwayne Hightower
Freddie Fox as Gwayne Hightower in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Gwayne remains tied to Team Green’s military campaign. As Aemond takes a harsher grip on power and Alicent loses influence, Gwayne could find himself caught between loyalty to his family and the reality of the war they are fighting.
Outside of House of the Dragon, Fox is known for Slow Horses, Victor Frankensteinand The Three Musketeers.
Jefferson Hall as Tyland and Jason Lannister
Jefferson Hall as Tyland Lannister in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, both brothers could become more important to the war effort. Tyland secured the Triarchy’s ships in the Season 2 finale, giving Team Green a way to challenge Corlys Velaryon’s blockade, while Jason’s army adds another major force against Rhaenyra.
Outside of House of the Dragon, Hall is known for Tenet, Oppenheimer and Star Wars: The Force Awakens.
Gayle Rankin as Alys Rivers
Gayle Rankin as Alys Rivers in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Alys remains tied to Harrenhal as the war moves deeper into the Riverlands. With Daemon now committed to Rhaenyra’s cause and Aemond rising as Team Green’s most dangerous player, Alys could become an even more important figure in the conflict.
Outside of House of the Dragon, Rankin is known for GLOW, Perry Mason and The Greatest Showman.
Kieran Bew as Hugh Hammer
Kieran Bew as Hugh Hammer in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Hugh gives Team Black a major advantage in the war. However, his sudden rise from commoner to dragonrider could create tension as Rhaenyra relies on people whose loyalty has not been tested for long.
Outside of House of the Dragon, Bew is known for Warrior and Da Vinci's Demons.
Tom Bennett as Ulf White
Tom Bennett as Ulf White in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Ulf’s sudden rise could become a major complication. While his bond with Silverwing makes him valuable, his lack of experience with power, politics and war may test how much Rhaenyra can actually trust the Dragonseeds.
Outside of House of the Dragon, Bennett is known for After Life and Love & Friendship.
Kurt Egyiawan as Grand Maester Orwyle
Kurt Egyiawan as Grand Maester Orwyle in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Orwyle remains in King’s Landing under Aemond’s rule. With Aegon gone from the capital and Alicent pushed aside, he may have to navigate an even more dangerous court while continuing to serve whoever holds power.
Outside of House of the Dragon, Egyiawan is known for Beasts of No Nation, A Real Pain and Skyfall.
Abigail Thorn as Sharako Lohar
Abigail Thorn as Sharako Lohar in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Lohar could become a major threat to Team Black’s control of the seas. With Corlys Velaryon’s blockade still central to Rhaenyra’s war effort, Lohar’s fleet appears to be setting up one of the season’s biggest conflicts: the Battle of the Gullet.
Outside of House of the Dragon, Thorn is known for Philosophy Tube, The Acolyte and The Prince.
Amanda Collin as Jayne Arryn
Amanda Collin as Jayne Arryn in 'House of the Dragon'Courtesy of HBO
Outside of House of the Dragon, Collin is known for Raised by Wolves and Kaos.
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Archie Barnes as Oscar Tully
Archie Barnes as Oscar Tully in 'House of the Dragon'Courtesy of HBO
Outside of House of the Dragon, Barnes is known for The Batman, The Dig and Dune: Prophecy.
Simon Russell Beale as Simon Strong
Simon Russell Beale as Simon Strong in 'House of the Dragon'Courtesy of HBO
Heading into Season 3, Simon remains tied to one of the war’s most important locations. With Daemon using Harrenhal as a base for Team Black and Aemond expected to become more aggressive, Simon could find himself in serious danger as the Riverlands conflict escalates.
Outside of House of the Dragon, Beale is known for The Death of Stalin, Into the Woods and The Outfit.
James Norton as Ormund Hightower
James Norton as Ormund Hightower in 'House of the Dragon'Courtesy of HBO
Outside of House of the Dragon, Norton is known for Little Women, Mr. Jones and Happy Valley.
Tommy Flanagan as Roderick Dustin
Tommy Flanagan as Roderick Dustin in 'House of the Dragon'Courtesy of HBO
Outside of House of the Dragon, Flanagan is known for Sons of Anarchy, Braveheart and Gladiator.
Dan Fogler as Torrhen Manderly
Dan FoglerOutside of House of the Dragon, Fogler is known for Fantastic Beasts and Where to Find Them, A Complete Unknown and The Walking Dead.
Tom Cullen as Luthor Largent
Tom CullenPhoto by Larry Horricks/HISTORY
Outside of House of the Dragon, Cullen is known for his work on Weekend, Black Mirrorand Downton Abbey.
Joplin Sibtain as Jon Roxton
Joplin SibtainOutside of House of the Dragon, Sibtain is known for Andor, Doctor Who and The Strangers: Chapter 1.
Barry Sloane as Adrian Redfort
Barry SloaneBarry Sloane joins House of the Dragon as Ser Adrian Redfort, a knight from House Redfort who appears to be aligned with Rhaenyra and Team Black. Outside of House of the Dragon, Sloane is known for The Sandman and Revenge.
Annie Shapero as Alysanne Blackwood
Annie ShaperoRelated: 'House of the Dragon' Season 2 Recap: What You Need to Remember Before Season 3 Arrives
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