|“||Everything I do is for Azgeda. But, what's good for Azgeda, is good for you. If you won't fight for your mother, or your Queen, fight for your clan. I want her head.||”|
|— Nia to Roan [src]|
She was born to King Theo and an unknown mother. At one point in her life she took over the throne of Azgeda and became the Queen. Sometime in her adulthood she gave birth to a son and named him Roan.
At some point in the past she sent her army to take land from Echo's family, when Echo was eight years old. The men executed Echo's father and burnt Echo's mother who was hiding the cellar with Echo. When Nia found out she executed the men who did this, took Echo into her clan, and started training Echo to be a warrior and spy. However, it is unknown if she did this to the real Echo or her best friend Ash. While the two girls were practicing archery one day and insulting the queen, Nia came upon them and ordered Ash to kill a Sangedakru spy, but she was unable to. As a result, Nia killed the man herself and ordered the girls to fight to the death. Ash was forced to kill Echo in self-defense and, as Sangedakru expected Azgeda to send them a girl named Echo, Nia forced Ash to take on the real Echo's identity.
Nia also kidnapped the lover of Lexa, Costia, whom she used for information about Lexa, then killed Costia. Commander Lexa then ordered the only way Azgeda could join the Coalition was if she banished her son Roan, so she did so.
Throughout the Series
In Ye Who Enter Here, Nia is surrounded by her people when Ice Nation warrior Echo approaches with updates on her mission. She informs Queen Nia that the explosion on Mount Weather was a success thanks to the information provided by the last Mountain Man. Queen Nia vows to rescue her son from Polis and to kill Lexa.
In Watch the Thrones, Nia has been arrested and is brought in before Lexa and the 13 clan Ambassadors to answer for the orchestrated attack on Skaikru at Mount Weather. Titus informs Nia that she will be put to death for her actions at Mount Weather and whether she had anything to say in her defense. She tells him that she doesn't need one, and declares a vote of no confidence in Lexa. The various Ambassadors of the 12 clans stand up and support Nia. However, she is informed by Clarke Griffin that her petition will fail because she does not have the unanimous support of all the clans. Nia dismisses her objection, until Titus informs her that Skaikru took the brand to become the 13th clan. Lexa tells Nia that she knows what she wants and to issue the challenge. Nia readily does so and names her son Prince Roan to fight for her.
In the courtyard of Polis, Nia walks with Roan and gives him advice on how to defeat Lexa. She tells him that if he kills Lexa his banishment will be lifted, and he will become a legend amongst his people.
Later, Nia is in her chambers eating while her bodyguard Ontari stands watch. Clarke enters with a proposition to vote with her and the other Ambassadors, and Nia would guarantee the protection of Skaikru from Azgeda. Nia agrees to the deal, and Clarke uses a knife to cut her palm to signify the blood oath. Clarke wipes her blood off on her sleeve and offers the knife to Nia. Nia takes the knife and is about to cut her palm when suddenly her bodyguard attacks Clarke and smells her sleeve. Ontari tells Nia that Clarke had poison on her sleeve. Nia tells Clarke that they could have been allies, but for this treachery, they are now enemies. Nia cuts Ontari's palm and spills her black blood on Clarke's face as a message to Lexa.
Nia attends the death match between Lexa and Roan with Ontari by her side. Lexa defeats Roan and instead of killing him she throws her spear into Nia's chest, instantly killing her.
In Hakeldama, her dead body is seen covered with fabric being moved on a horse carriage by Lexa and Clarke.
In Ashes to Ashes, a flashback features a girl named Echo and her best friend Ash practicing archery when Queen Nia arrives and demands they kill a Sangedakru spy. When Echo misses, Nia shoots the man in the back with an arrow and orders Echo to kill Ash for her failure. Echo pleads with Ash to fight back and make it look real. Nia gives Echo three seconds to kill Ash. However, Ash is able to kill Echo in self-defense; Nia forces Ash to take Echo's place and identity, telling her that Sangedakru was expecting a girl named Echo.
Nia has ruled her people for many years while "holding onto power through ruthlessness and savvy." She does what she must to maintain her power, even when it puts her at odds with those closest to her; she banished her own son. Despite finding the real Echo and her best friend Ash insulting her and suggesting imaging Nia's face on a target, she showed no care as long as it let them hit the target rather than being insulted by such a thing.
Nia is very tall with an average build and light brown hair. She also has scars on both sides of her face.
Grounders formed the Coalition, the Ice Nation (Nia's Clan) and the Trikru (Lexa's Clan) were at war with each other. During the war, Nia captured Lexa's lover, tortured her for information on Lexa, killed her, and cut off her head. Later Lexa made banishing Nia's son and heir a condition of letting Ice Nation join the coalition against Mount Weather. Nia resented her clan being forced into the Coalition under Lexa and its circumstances, once Mount Weather fell she had a plan in place to challenge Lexa’s rule.
|Many Happy Returns||Absent|
|Fog of War||Absent|
|Long Into an Abyss||Absent|
|Survival of the Fittest||Absent|
|Coup de Grâce||Absent|
|Bodyguard of Lies||Absent|
|Blood Must Have Blood (Part 1)||Absent|
|Blood Must Have Blood (Part 2)||Absent|
|Wanheda (Part 1)||Mentioned|
|Wanheda (Part 2)||Mentioned|
|Ye Who Enter Here||Appears|
|Watch the Thrones||Appears|
|Terms and Conditions||Absent|
|Join or Die||Absent|
|Red Sky at Morning||Absent|
|Perverse Instantiation (Part 1)||Absent|
|Perverse Instantiation (Part 2)||Absent|
|Heavy Lies the Crown||Mentioned|
|The Four Horsemen||Absent|
|A Lie Guarded||Absent|
|The Tinder Box||Mentioned|
|We Will Rise||Absent|
|Die All, Die Merrily||Mentioned|
|The Other Side||Absent|
|Red Sun Rising||Absent|
|The Children of Gabriel||Absent|
|The Face Behind the Glass||Mentioned|
|The Gospel of Josephine||Absent|
|The Old Man and the Anomaly||Absent|
|What You Take With You||Absent|
|Ashes to Ashes||Flashback|
|The Blood of Sanctum||Absent|
|From the Ashes||Mentioned|
|Welcome to Bardo||Absent|
|The Queen's Gambit||Absent|
|A Little Sacrifice||Mentioned|
|A Sort of Homecoming||Mentioned|
|The Dying of the Light||Absent|
|The Last War||Absent|
- Nia: "When you kill Lexa, your banishment will be over. In the wake of your victory, our people will be more powerful than ever. That will be your legacy and your legend"
- Roan: "Don't pretend you do anything for me, mother."
- Nia: "You're right. Everything I do is for Azgeda. But, what's good for Azgeda, is good for you. (offers him her sword) If you won't fight for your mother or your Queen, fight for your clan. I want her head."
- -- Watch the Thrones
- Warriors who killed Echo's family (executed)
- A Sangedakru spy (shot in the back with an arrow)
- Original Echo (caused; ordered her to kill Ash, who killed her instead)
- Costia (tortured and beheaded on her orders)
- Arkadian Guards Nelson and Hill (ordered)
- Two Polis Sentries (indirectly; manipulated Bellamy and Pike to shoot them through Echo)
- 49 Sky People housed in Mount Weather (ordered)
Notes and Trivia
- Nia's was the fourth leaked audition tape, although a different actress than the one who auditioned was chosen to portray her.
- Nia's name originates from Niagara Falls, a natural wonder within the Ice Nation territory.
- Nia served as a minor and tertiary antagonist in Season Three.
- Niylah's mother named her daughter after Nia.