Nymeria Sand

Nymeria Sand (often called "Nym" for short) is a recurring character in the fifth season, though she had already been alluded to in Season 4. She is played by Jessica Henwick and debuts in "Sons of the Harpy".

Background
Nymeria Sand is the second of the eight bastard daughters of Prince Oberyn Martell, known as the "Sand Snakes". Nymeria's mother was an Eastern noblewoman, who taught her how to use a whip in combat, but who later died in battle. Nymera became very skilled with using her 8 foot long bullwhip in combat.

Nymeria inherited her father's cunning, and is the most observant and calculating of the Sand Snakes. Instead of charging head-on into a situation relying on brute strength (like her older sister Obara), she will stand back and observe her enemy's weak points, then move in precisely for an accurate strike. Her choice of a bullwhip as her primary weapon exemplifies this mentality.

Nymeria dresses more femininely than her martial sister Obara, though she is no less deadly. Nymeria has long flowing hair, and alluring Dornish-style dresses.

She is named after Nymeria, the warrior-queen of the Rhoynar who led her people's migration to Dorne one thousand years ago. The original Nymeria unified Dorne for the first time, and is considered the founder of House Martell in its modern form. "Nymeria" is a popular name in Dorne, much as "Brandon" is in the North, after their founder Brandon the Builder. Through her father Oberyn, Nymeria Sand is actually a direct descendant of the original Nymeria.

Season 4
Oberyn mentions his eight bastard daughters to Queen Cersei Lannister.

Season 5
When Ellaria Sand goes to the Water Gardens to scold Doran for his inaction to Oberyn's murder, she tells the Prince that Dorne must go to war against the Lannisters, and points out that the Sand Snakes, who have the love of their people, agree with her, and that they will avenge their father if Doran does not.

Nymeria, Tyene, and Obara meet with Ellaria to discuss rallying Dorne to go to war against House Lannister. When the conversation shifts to Myrcella Baratheon, Obara reveals information she received from a merchant captain that Jaime Lannister has been smuggled into Dorne. Ellaria insists that they must stop Jaime from reaching Myrcella. They are presented with a choice: side with Doran and have peace, or side with Ellaria and have war. Nymeria, Tyene, and Obara agree to side with Ellaria.

Behind the scenes
Henwick explained how she was cast as Nymeria:


 * "I think I had three auditions, originally for a different character. I met David and Dan, and really got along with them. The whole time I wanted Nymeria, and I was fighting for it. But they wanted a black actress, so I couldn't get an audition! Finally, I managed to talk my way in and I got the part!"

The fourth Sand Snake, Sarella Sand - who doesn't appear in Season 5 - is black in the novels, as her mother is a Summer Islander ship captain. An initial idea may have been to condense the two roles into one character.

In the books
In the A Song of Ice and Fire novels, Nymeria, often called Lady Nym, is Oberyn's daughter whom he fathered on a noblewoman from Volantis. Like Arya Stark's direwolf, she is named after the warrior-queen of the Rhoynar who lived a thousand years ago. Unlike Arya's direwolf, Nymeria Sand is actually a direct descendant of the original Nymeria.

Nymeria is twenty-five years old, slim and slender as a willow, with straight black hair worn in a long braid which pulls back from a widow's peak. She has dark eyes, high cheekbones, and full lips. She is initially described as having pale white skin, but mentions her olive skin. Nymeria has all the beauty that her elder sister Obara Sand lacks but is no less deadly. She usually can conceal a dozen daggers on her person and is extremely skilled with the blades.

The TV series version of "Nymeria" is a condensation of several different aspects of the eight "Sand Snakes" in the books. Nymeria is half-Volantene but has the classic dark Rhoynar features that most members of House Martell have as "salty Dornishmen". Actress Jessica Henwick, however, while she does have many of the features specifically ascribed to Nymeria, was born to a Singaporean Chinese mother and a British father. Apparently, instead of taking that Nymeria's mother was "from the East" to mean "from the Free City of Volantis" as in the books, the TV series changed this to mean that her mother was from the far east of Essos, probably from Yi Ti (which is loosely analogous to Imperial China in the narrative).

Henwick's casting makes her the first major role in the TV series played by an East Asian actress (the first East Asian actor to appear at all was only in the Season 4 finale, a fleeting appearance by Alice Hewkin as a Child of the Forest in the cave of the three-eyed raven). This would seem to be a step away from the TV series's previous tendency to use Volantis as their go-to reference for the eastern lands (i.e. changing "Jeyne Westerling" to be "Talisa Maegyr of Volantis").

In the books, Nymeria mentions that she was "abed with the Fowler twins" when word arrived of her father's death. Jeyne and Jennelyn Fowler are identical twin sisters from House Fowler, stony Dornishmen from the Red Mountains of the west. Nymeria is close friends with them, and they seem to be on good terms with Arianne and Quentyn as well - though Doran considers the twins to be gossips who cannot be trusted to keep a secret. Doran does trust Nymeria, but at times he will withhold sensitive information from her out of fear that the Fowler twins will somehow discover it through her. It is not clear what exactly was meant by Nymeria being "abed" with the Fowler twins: while many noblewomen in Dorne openly have sexual relations with other women, throughout all of Westeros it is common for girls from noble houses to share the same large bed together in their chambers.

In the beginning of "A Feast for Crows", Nymeria is the second of the Sand Snakes who confronts Prince Doran about his failure to avenge their father. She joins his retinue on the way to Sunspear. She is aware of Obara's plan to declare a war against the Lannisters, but has a different plan: she and Tyene will assassinate Tywin, Cersei, Jaime and Tommen. She says that if Doran had been the one to be killed, Oberyn would have led the Dornish troops north before his corpse was cold. She warns Doran that she and her sisters will not wait seventeen years for their vengeance, and leaves. After Doran arrives at Sunspear, he takes steps to make certain Nymeria and the other Sand Snakes will not ignite a war.