Sand Snakes:

Keisha Castle-Hughes as Obara Sand. Visenya's eldest cousin (28 years old).
'Sand Snake.'
'Queen's Guard'

As the oldest out of her sisters, Obara sees it as her job to watch out for the others. She will kill anyone that upsets her sisters, nephew and cousin Visenya. Obara is part of her cousin's Queen's Guard.

Born 267 AC, Oldtown.

Jessica Henwick as Nymeria Sand. Second eldest cousin (25 years old).
'Sand Snake.'

As the second oldest she taught all of her sisters, and Visenya all they need to know about how to seduce men without actually laying with them. She is fiercely loyal and just as fiercely protective of her sisters, nephew and cousins. The four eldest often fight with each other, tag teaming against their enemy before feeding them to Visenya's dragons. Or playing with little Rylen.

Born 270 AC, Yi Ti.

Rosabell Laurenti Sellers as Tyene Sand. The oldest of Ellaria and Oberyn's (birth) daughters (23 years old).
'Sand Snake.'

Like her mother, father, sisters and many others in Dorne, Tyene is very protective of her little cousin Visenya and her nephew Rylen. The four girls, if not sparring or flying on the dragons, or playing with little Rylen are often up to mischief.

Born 272 AC, Sunspear.

Aishwarya Rai as Sarella Sand. 20 years old. Like all of her sisters, Sarella is overprotective of Visenya and Rylen. She has Oberyn's intellect. Her mother was a ship captain from the Summer Islands. She wants to become a captain of her own ship, like her birth mother.

Born 275 AC, Summer Islands.

Aditi Rao Hydari as Elia Sand. 19 years old. the fifth Sand Snake, mothered by Ellaria Sand, and named after Oberyn's late sister. Elia enjoys horses and jousting. She wants to become a Knight (but will only serve her cousin not those Usurpers).

Born 276 AC, Sunspear.

Anna Shaffer as Obella Sand, 17 years old. the sixth Sand Snake, mothered by Ellaria Sand. Obella's weapon of choice is a Morning Star along with her twin.

Born 278 AC, Sunspear.

Ashley Madekwe as Dorea Sand, 17 years old. Obella's twin. the seventh Sand Snake, mothered by Ellaria Sand. Dorea's weapon of choice is a morning star along with her twin.

Born 278 AC, Sunspear.

Adria Arjona as Loreza Sand. 15 years old. Visenya's youngest female cousin and the youngest daughter of Oberyn and Ellaria. The eighth Sand Snake and her favoured weapon is a double sided blade.

Born 280 AC, Sunspear.

Other Martells:

Alexander Siddig as Prince Doran Martell. Visenya's uncle.

Born 248 AC, Sunspear.

Aiysha Hart as Arianne Martell. Visenya's cousin. (28 years old). Heiress to House Martell.

Born 267 AC, Sunspear.

Avan Jogia as Quentyn Martell. Visenya's cousin and he's 20 years old, the middle child of Doran Martell and Mellario of Norvos who walked out on her husband and children when Quentyn was fostered at Yronwood at age 10.

Born 275 AC, Sunspear.

Toby Sebastian as Prince Trystane Martell. Youngest male cousin (12).

Born 283 AC, Sunspear.

Queens Guard and other guards loyal to Vis and Dorne:

Luke Roberts as Sir Arthur Dayne. Visenya's sword shield and head of her Queen's Guard.

He was made Visenya's sworn shield when she was born and promised her parents he'd always look after her and put her before them. Which is why he along with Lasa snuck her out of Kings Landing during the attack. He is fiercely loyal and protective of Visenya and Rylen, and he taught Visenya to wield two swords as soon as she was able so she could protect herself. He is extremely proud of his protégé.

Born October 5th 251 AC, Starfall.

Ian McElhinney as Sir Barristan Selmy. Part of Visenya's Queen's Guard.

Deobia Oparei as Aero Hotah. Head of the Dornish army. Sunspear's Master at Arms.

Zach McGowan as Salladohor Saan. Part of Visenya's Queen's Guard.

Fiercely loyal and protective of Queen Visenya and Prince Rylen (in his eyes they are the true royalty not the Usurper). He used to be a pirate-lord and mercenary sailor.

However, he moved to the Free City of Lys many years ago, and generally considers himself to be a Lysene, until he met Visenya and Oberyn and wanted to protect the child after the Usurper set the Temple of the Stranger or The Many-Faced God on fire with Visenya, Aelyx Tamo (Ted), Anysa Perle née Tamo (Nymphadora Tonks. Pronounced An-SEE-Ah) and Mikal Perle (Remus) inside killing the latter three.

Born May 5th 256 AC.

Bob Morley as Marros Zhax. Visenya's friend and spy/guard. Nora's older brother. He is five years older than Nora but like her, he is Visenya's friend and is devoted to Visenya and Rylen.

He also knows how to wield any weapon. He's originally from Naath, but they had travelled to Volantis trying to get a better life after their parents died from an illness.

When Visenya and Oberyn were travelling in Volantis when she was 10, she spotted 13 year old Nora and 17 year old Marros living on the streets and asked her uncle if they could help them. Not able to say no to her and her especially with her kindhearted nature, Oberyn agreed to take Nora in as Visenya's Lady in Waiting and Arthur took Marros in as his Squire.

Born 270 AC, Naath.

Dragons:

Thanatos (large pitch black dragon and Vis's dragon) is the largest out of the four. The male creature is two-hundred-and- seventy feet long with a wingspan of two- hundred-and-ten feet.

Alaenla, her second dragon is (red and orange girl dragon, her scales look like fire). She is two- hundred-and-fifty feet long with a wingspan of two-hundred.

Daenesa, her third dragon and second female is (blue and green in colour with blue scales that gleam purple in the sunlight). She is two-hundred-and-thirty feet long and had a wingspan of one-hundred-and-eighty.

Aithusa, her second male and her fourth and smallest dragon is (silver in colour with pure white scales). He is two-hundred-and-twenty feet in length and had a 170 ft wingspan.

Thank you Ruellaxoxo for the amazing cover this is by far my favourite.