Kai was the first Ninja to find out about Nya being the vigilante Samurai X and agreed to keep her secret after she stated her reasons for it. Nya was also touched when her brother supported her endeavors and thanked him for his beliefs in her.
After she awakened her powers, Kai was proud of her skills and happy that she also became a Ninja and expressed pride taking down The Preeminent. Nya then worked alongside her brother in fighting off many threats. She also stopped him from attacking their father and accusing their parents of being traitors after they found them before the truth is revealed.
As of the Season 8 finale, Nya was under the impression that her brother is dead and unaware he is in another realm.
In the Season 9 episode "Firstbourne," Nya is still sad at losing her brother and wants to honor his memory by continuing to fight. However, she learns that he was instead teleported to somewhere after she and the others find a piece of a leaf for Traveler's Tea.
In "Green Destiny," Nya is reunited with her brother and quickly contacts him to tell him she hears him and they fight off the sons of Garmadon with his aid. Afterward, the siblings celebrate their victory once Garmadon is defeated.
During "The Fall," Kai comforted Nya as she broke down at unintentionally causing Cole to fall to the darkness and encouraged her by speaking highly of her creativity and calling her the brains of the group, something that caught her by surprise. Kai's words also caused Nya to get an idea to defeat the threat, as Kai was amazed at her thinking.
In Season 7: The Hands of Time, she and Kai realize their parents are alive and were confused by Krux's declaration of them being traitors. When she and Kai come face to face with their parents, she is welcoming of them but her brother is less forthcoming. Nya then learns that her parents were forced to her the twins after Krux threatened her and Kai when they were young.
In Season 7: The Hands of Time, she and Kai realize their parents are still alive and were confused by Krux's declaration of them being traitors. When she and Kai come face to face with their parents, she is welcoming of them but her brother is less forthcoming. Nya then learns that her parents were forced to help the twins after Krux threatened her and Kai when they were young. After the Time Twins threaten their parents, she and Kai are forced to retrieve the Time Blade to protect them.
|“Oh, Jay, this is the reason.”|
“The reason for what?”
“The reason you're the only one I've ever let into my heart. I don't know how to ever tell you this, but even before you saw a glimpse into our future, I saw it too. . . the first time I met you.”
|— Nya and Jay|
Since the beginning of the show, Nya has displayed a romantic relationship with Jay which has been put under stress on several occasions. She and Jay were clearly mutually attracted to one another until "The Surge," when her perfect match was revealed to be Cole.
Later, after she became the Master of Water and become apart of the team, Nya has distanced herself from the former, insisting there was nothing remaining between the two and they were simply friends, much to Jay's disappointment.
However, by the end of Skybound, when Nya was dying due to poisoning, Jay saves her by undoing all of Nadakhan's actions. In the finale, she reconciled her relationship with Jay and they shared a kiss.
As of the Season 8 finale, Nya is under the impression that her boyfriend is dead and unaware he is in another realm.
In "Firstbourne," Nya is still sad at losing her boyfriend and wants to honor his memory by continuing to fight against Garmadon. However, she learns that he was instead teleported to somewhere after she and the others find a piece of a leaf for Traveler's Tea.
In "Green Destiny," Nya is reunited with her boyfriend and quickly contacts him to tell him she hears him and they fight off the sons of Garmadon with his aid. She hugs him in their reunion before they take the fight to Garmadon. In the end, they share a hug after peace is restored to Ninjago.
In "Endings," Nya is asked by Jay to be his Yang before they confront the Oni, to which she says yes. She wears half of the medallion on her chest for the rest of the episode.
In "The Temple of Madness", Jay and Nya overcome all the deadly obstacles and enemies there were to face before having to fight Unagami. As they hug each other for their work, Sushimi, who they defeated just before, attempts to kill Jay by throwing his Puffer fish malice at him. Nya throws herself in front of her Yin and takes the hit, killing her and turning her into an Energy Cube, much to Jay's dismay.
In “Game Over”, Nya and the other Ninja who were formerly cubed are revived, after Jay and Milton Dyer successfully console Unagami to release the gamers and NPCs in Prime Empire. She and Jay run up to each other and share a kiss.
|“Then there's Cole. He's handsome, and I suppose I connect with him on a deeper level, but everything's so serious with him, you know what I mean?”|
Nya and Cole are good friends but in Season 3, she discovers from a machine that Cole is her perfect match. Following this revelation, she grew awkward around him though developed an attraction to his kind nature which soon initiates a rivalry between Jay and Cole who compete for her affections.
In Season 4, Nya is still unsure of who to pick between Cole and Jay. However, she was happy that they put their differences aside and became friends again.
During Season 5, she comforts Cole when he becomes a ghost and helps him gain some encouragement from his new circumstances. In season 6, Nya chose Jay over Cole who accepted this with a smile but this doesn't cause a rift between them as they remain good friends. When Cole returned to being human, Nya was happy to see him back to normal and hugged him with the other Ninja.
As of the Season 8 finale, Nya is under the impression that her friend is dead and unaware he is in another realm.
In "Firstbourne," Nya is sad at losing her friend and wants to honor his memory by continuing to fight. However, she learns that he was instead teleported to somewhere after she and the others find a piece of a leaf for Traveler's Tea.
In "Green Destiny," Nya is reunited with her friend and quickly contacts him to tell him she him and they fight off the sons of Garmadon with his aid.
In Season 5, Wu informed a surprised Nya that she was the Elemental Master of Water, to her shock. Wu then started to train her in the usage of her power to become a Ninja. Nya is now one of Wu's students along with her brother Kai and the others.
In Season 7, she and the other Ninja come to his aid when he fights Acronix by himself. She later saves Wu from succumbing to the effects of the time blades with Wu back to normal, he helps them foil the time twins plan. He later aids Kai and Nya in battle the Time Twins but when the villains prepare to finish the two Ninja off, Wu sacrifices himself to save them. Though happy at their victory, Nya couldn't help but be worried when her master is lost in time with their enemies. She and the others sought to find her master no matter what.
During Season 8, she was unknowingly reunited with her master when he came back as a baby. She was told by the others of this but didn't believe the infant could be him, even after hearing the stunts he did until she heard the baby talk and show some of Wu's habits causing her to acknowledge it really was Wu. She was the Ninja who came up with a theory for his transformation and she was happy to have him back.
As of the Season 8 finale, Nya was under the impression that her master was dead being unaware he was in another realm.
In "Firstbourne," Nya is sad at losing her master and wants to honor his memory by continuing to fight. However, she learns that he was instead teleported to somewhere after she and the others find a piece of a leaf for Traveler's Tea.
In "Green Destiny," Nya is reunited with her master when he and the others return. She is amazed that Wu was almost back to normal but still in his right mind. She fights by her master's side as they free the city of Garmadon's reign. At the end, she is relieved to see him back as an old man again once peace is restored to Ninjago.
|“Zane, you're back!”|
|— Nya, after seeing Zane again after his "death"|
Nya and Zane get along very well, since they are the smartest of the ninja and they are friends throughout the first three seasons.
In Season 4 , Nya is shown to be sad about Zane's "death" but when searching for the other Ninja she discovered that he was still alive after she detected Zane's beacon, which greatly surprised her but also gave her a clue as to where the others were located. When the Elemental Masters break out and save her and Garmadon, Nya immediately runs to hug the newly rebuilt Zane relieved and happy that he was back. They fought off Chen's army together and celebrated their victory.
In Season 6, Nya was worried when Zane disappeared because of Nadakhan and feared the worst. After Nya was struck by Tiger Widow venom and succumbed to the poison, Zane was sad at her death but fortunately these events were undone due to Jay's last wish.
In Season 7, when Zane is attacked by Time Twins, she works very hard to restore him after he is unconscious for a while. Nya was successful in awakening Zane and was relieved to have him back in action.
As of the Season 8 finale, Nya is under the impression that her friend is dead and unaware he is in another realm.
In "Firstbourne," Nya is still sad at losing her friend and wants to honor his memory by continuing to fight. However, she learns that he was instead teleported to somewhere after she and the other find a piece of a leaf for Traveler's Tea.
In "Green Destiny," Nya is reunited with her friend and quickly contacts him to tell him she sees him and they fight off the sons of Garmadon with his aid.
During "Awakenings," she realizes Zane was the Ice Emperor. However she knew it wasn’t of his own choice because of his usage of the Scrolls of Forbidden Spinjitzu and wanted to save him. Likewise, Zane finally remembers her and a happy moment of them together. He then snaps out of his delirium enough to help his friends.
|“That suit never made you what you are. It's what's inside of you.”|
Lloyd and Nya are good friends, though they don't interact much in the series. Nya and Lloyd do show that they care about each other. In Season 4, when Chen's army was about to invade Ninjago, Lloyd volunteered to go alone and Nya expressed worry for him to take on such a large task by himself.
In Season 5, she wanted to help save Lloyd when he was possessed by Morro and was relieved to see him released from the evil ghost Ninja. In return, Lloyd was happy with the new addition to the team and congratulated Nya for unlocking her True Potential and defeating the Preeminent (although it led to his father's demise).
In Season 8: Sons of Garmadon, she is still a good friend to him and even offers him advice on approaching Harumi after the others give bad advice. She also gave him some of her power for him to recover after his fight with his resurrected father.
As of the Season 8 finale, Nya and Lloyd are the only remaining Ninja left and are under the impression that their friends are dead and unaware they are in another realm.
During Season 9, she takes to training him and providing motivational support when he is down at the loss of his powers.
Nya continues to fight by Lloyd's side even after most of their allies were captured. When she was hurt by Ultra Violet, Lloyd and Dareth came to her aid later happy to see Lloyd has defeated his father and regained his powers in the process.
In Season 4, he accidentally travels with her to Chen's Island, much to her annoyance. However, Dareth proved himself helpful as his talent in the art of disguise aided Nya in infiltrating Chen's palace. Nya was amazed by his acts and most likely grateful to him for his help as she was able to find her friends and learn of Chen's plans. They later took part in fighting off Chen's army in the corridor of elders.
In later seasons, Dareth continues to help Nya and the others, such as providing them shelter from the resurrected Garmadon and helping her in the Resistance. While she sees Dareth as a good friend, she is still annoyed by his antics but sees he's trying to help and cuts him slack.
After Garmadon was defeated, Nya invited Dareth to be cheered on too, due to his major help in saving the city. This showed she respects him in spite of his faults.Season 5: Possession, Nya met Ronin when her friends accidentally gave him a share of their tea shop. Ronin didn't mind telling Nya he was in debt to the Soul Archer and helped Nya with her training by giving her advice of not caring too much, which somewhat help. When Morro and the other ghosts force Ronin to steal the Sword of Sanctuary, she impedes him, forcing him to fight her since he needed to repay his debts to the ghosts.
During the fight, she sees a future of him kissing her, which causes her to kick him in the leg in disgust as he questioned it but she replies he knows what he was going to do before he takes the sword from her. She is disappointed when he hands it over to Morro but is relieved when he helps them fight the Preeminent.
She still gets along with Ronin and may see him as a friend, though is still put off by his thievery.
|“Whoever you are, you have proven that you are worthy to become the new Samurai X.”|
The two of them get along well and Nya was amused by Zane and P.I.X.A.L.'s growing romance, though she was worried when the latter revealed she and Cole were a better match.
Nya was unaware that P.I.X.A.L. created a new body for herself and took on her former alter-ego as Samurai X but supported the mysterious person's endeavors.
In "Dead Man's Squall," P.I.X.A.L. revealed her status as Samurai X as Nya was surprised at this. While being controlled, she fought the Ninja, winning the battle and destroying one of the Bounty's engines. After regaining control, P.I.X.A.L. joined the team as Samurai X and promised to devote herself to the work of protecting Ninjago alongside them.
During Season 9, P.I.X.A.L. remains an ally to Nya and the others, after Wu and the others are teleported somewhere. Nya sees her as good friend, since they both had felt left out in helping the Ninja. She was worried when P.I.X.A.L. got captured by the Sons of Garmadon but relieved after the latter broke free in "Green Destiny" and helped in defeating the Colossus.
After Garmadon was defeated, the city held a party to celebrate and the Nya invited P.I.X.A.L. to be cheered too, due to her major help in saving the city.
During "The Weakest Link," Nya was still worried for them and wanted to trade the captured Harumi for them but was told it wouldn't be possible.
Cryptor enjoys flirting with her to get her riled up, calling it dates while she is disgusted by him.
Chen is one of Nya's enemies.
She infiltrated his base by disguising as a kabuki and secretly passed on the word to her friend of Chen placing a spy in the group. She soon blew her cover and Chen had his followers pursue her, since she stole the spell he needed to transform into Anacondrai. She was captured and refused to serve Chen, as she believed her brother did but was happy to learn it was really a ruse. In the end, she helped her friends fight off Chen and took part in the Second Serpentine War and was pleased Chen was banished.
In "Day of the Departed," Chen was summoned by Yang and eagerly went after Kai and Nya as his targets, stating he had a personal vendetta against her and her brother was a bonus. When confronting them, Nya was shocked to see him again while Chen was excited at the thought of revenge. In spite of his relentless attacks, she along with her brother ensured Chen was defeated again and sent back to the Departed Realm.
Nadakhan was an adversary of Nya.
He framed her and the other Ninja for crimes, he committed and sent them to Kryptarium Prison. He gained a vendetta against her when learning of the destruction of his world, which occurred because of her victory over The Preeminent and destroyed the Cursed Realm (the twin realm of his).
Nya was captured by him and married him, allowing the Djinn to gain infinite wishes for himself and had the soul of Dilara possess Nya.
However, Nya dies after taking a shot of tiger spider venom that passes through her and hits Nadakhan. Since Jay used his last wish that the weakened Nadakhan granted, Nya was spared this fate but still recalls the Djinn.
|“You freed me?”|
“We fight like girls, not like cheaters.”
|— Nya and Dogshank|
Dogshank was one of Nya's rivals.
They first meet on Tiger Widow Island, where the pirate confronted Nya in combat. When Nya was trapped in one of the Tiger Widow's webs, she expected her foe to finish her but was surprised she freed her opponent, proclaiming her sense of honor in combat. Nya gained mild respect before continuing their fight. When Nadakhan commanded his subordinates to get the Tiger Widow's venom, Dogshank ended the fight, promising to have a rematch. Nya stated she won't play nice next time. Dogshank returned the sentiment, voicing she would look forward to their playdate.
When they met again, Dogshank captured her on Nadakhan's orders and attempted to drag Nya back to her captain. However, Nya yanked her hair out, she retaliated in anger over the underhanded tactic, with Nya reiterating she wasn't playing nice. The two briefly fought and Dogshank ended up being knocked into a portal the spilled Traveler's Tea.
Nya holds extreme hatred for them, since they were largely responsible for her and Kai's parents disappearance. Nya hadn't known of this until she and the other Ninja fought Acronix. Nya would be informed of the hint from Kai of their parents being traitors, though didn’t believe it.
Nya later discovered Krux was masquerading as Dr. Saunders and was shocked by this.
Nya later learned they forced her parents into servitude under threat of harming her and Kai when they were young. Nya's dislike for them boiled especially since the Time Twins forced her and Kai to serve them by threatening her parents and a rapidly aging Wu. Nya followed the Twins to the past and disrupted their plans, saving Ninjago from their influence.
In the final battle, Nya joined her brother and master in fighting them. Nya and Kai overpowered Krux before Acronix stepped in to defend his brother, nearly defeating the Ninja until Wu sacrificed himself and sent the Ninja back to the present while he stays behind to defeat the enemy.
|“Remember how I didn't care for her at first? Then she won me over with all that girl talk, and we started to really get to know each other? Well now I hate her!”|
Nya met Harumi when she and the others were assigned to protect the Royal Family. For unknown reasons, Nya wasn't particularly impressed with them, but she was respectful to Harumi in their first meeting. When Harumi referred to her simply as the girl of the team, Nya was obviously annoyed but that soon changed when Harumi voiced her admiration for her and stated she wanted to be like her ever since Nya became proud warrior and master. Flattered, Nya smiled and stated she liked Harumi. When Harumi joined the team, she got along with the Water Ninja, sympathizing with being left out of the action.
Once Harumi was revealed to be the Quiet One, any lingering friendship or respect Nya had for her was gone, as she stated that she hated her for lying to her.
During "The Weakest Link," Nya joined her friends in capturing Harumi and took pleasure in gagging her in revenge for her lies.
It is not known what Nya's reaction was to Harumi's death.
It is also unknown whether Nya knew she had saved Harumi long ago, in Samurai X-Treme.