Top TV and film House of the Dragon’s cast includes

Milly Alcock portrays Princess Rhaenyra Targaryen in her youth.

Scene from the film “House of the Dragon.”

HBO

This is the first major role for Alcock. She has previously acted on the Starz drama “The Gloaming” and in the horror flick “The School.”

Milly Alcock appeared on the Australian program Upright.

Lingo Pictures/Sundance One

Emily Carey portrays young Alicent Hightower in the film.

In the pilot episode of “House of the Dragon,” Alicent appeared.

Ollie Upton / HBO

In “Wonder Woman” (2017) and “Tomb Raider,” Carey portrayed younger versions of the main characters (2018).

Alicia Vikander and Gal Gadot portrayed the older incarnations of Diana and Lara, respectively.

Warner Brothers

Paddy Considine portrays King Viserys Targaryen in “Game of Thrones.”

The pilot episode of “House of the Dragon” featured Viserys.

Ollie Upton / HBO

In “Hot Fuzz,” Considine portrayed Detective Wainwright. He also appeared in “The World’s End,” “The Bourne Ultimatum,” and “Peaky Blinders,” a historical drama.

Paddy Considine in “The End of the World.”

Focus Functions

Matt Smith stars as Prince Daemon Targaryen, the uncle of Rhaenyra and the brother of Viserys.

The depiction of Daemon Targaryen in “House of the Dragon”

Ollie Upton / HBO

Fans may recognize him best as the eleventh Doctor on the BBC science fiction programme “Doctor Who.” Smith also starred in “Last Night in Soho” and “Morbius,” and he played a youthful Prince Philip in “The Crown.”

“Doctor Who” features Matt Smith and Karen Gillan.

BBC

Emma D’Arcy portrays Princess Rhaenyra in her older years.

The adult version of Rhaenyra from “House of the Dragon.”

HBO

Astrid on the Amazon series “Truth Seekers” was portrayed by D’Arcy. In addition, they appeared in the film “Misbehavior” alongside their “House of the Dragon” co-star Rhys Ifans.

Additionally, Emma D’Arcy appears in “Mothering Sunday.”

Classic Sony Pictures Films

Olivia Cooke portrays Alicent Hightower in her older years.

Olivia Cooke in the role of Alicent Hightower.

HBO

Cooke co-starred in “Ready Player One” in 2018. She also had roles in “Me and Earl and the Dying Girl” and “Life Itself.”

In “Ready Player One,” Tye Sheridan and Olivia Cooke are featured.

Warner Brothers

Fabian Frankel portrays the Knight of the Kingsguard, Ser Criston Cole.

Criston and Joffrey in “House of the Dragon”

HBO

Frankel also appeared on the crime drama “The Serpent,” which was inspired by a sequence of 1970s murders.

Fabien Frankel on “The Serpent.”

Netflix

Ser Otto Hightower, the Hand of the King and father of Alicent, is portrayed by Rhys Ifans.

“House of the Dragon” star Rhys Ifans as Otto Hightower.

Ollie Upton / HBO

Lord Corlys Velaryon, a.k.a. the Sea Snake, is portrayed by Steve Toussaint.

“House of the Dragon” by Steve Toussaint.

Ollie Upton / HBO

Toussaint has appeared on various television programs, such as “CSI: Miami,” “Skins,” “Doctor Who,” and Steve McQueen’s “Small Axe.” In addition, he appeared in “Prince of Persia: The Sands of Time” (2010) and “Point Break” (2015).

In “Prince of Persia: The Sands of Time,” Steve Toussaint portrayed Seso.

Walt Disney Studios Film Productions

Rhaenys Targaryen, often known as “The Queen Who Never Was,” is portrayed by Eve Best.

“House of the Dragon” star Eve Best as Rhaenys.

HBO

Best has appeared in “Fate: The Winx Saga” on Netflix, the Oscar-winning film “The King’s Speech,” and the television series “Nurse Jackie.”

Eve Best in “Nurse Jackie.”

Showtime

Graham McTavish was cast as one of the Kingsguard’s knights, Ser Harrold Westerling.

In “House of the Dragon,” Graham McTavish portrayed Ser Harrold Westerling.

Ollie Upton / HBO

This is not McTavish’s first appearance in a fantasy franchise; he portrayed Dwalin in “The Hobbit” trilogy beginning in 2011, and previously appeared in “Outlander.”

In “The Hobbit,” Graham McTavish is the protagonist.

New Line Cinema

Sonoya Mizuno portrays the enigmatic Mistress of Whispers in King’s Landing, Mysaria.

Daemon and Mysaria in “Dragon’s Lair.”

HBO

Mizuno has costarred in critically praised films such as “Crazy Rich Asians” and “Ex Machina,” as well as the Hulu science fiction series “Devs.”

“Devs” starring Sonoya Mizuno as Lily.

Robert Liu/FX

Bill Paterson, a renowned actor, portrays Lord Beesbury, a member of the Small Council, in the drama The Small Council.

In the novel “House of the Dragon” by Bill Paterson.

HBO