Playable Saber (Fate/Extra)

Saber (セイバー) is the Saber-class Servant available to be chosen by Hakuno Kishinami in the Moon Cell Holy Grail War in Fate/Extra and Fate/Extra CCC. She is one of the Servants of Ritsuka Fujimaru of the Grand Orders conflicts of Fate/Grand Order. She is often called Red Saber (赤セイバー) to distinguish her from other Sabers.

Identity
Saber's True Name is Nero Kuraudiusu Kaesaru Augusutusu Gerumanikusu, the Fifth Roman Emperor. She had the reputation of a notorious tyrant whose rule was made up of schemes and poison as she oppressed all religious forces, especially Christians, and the Roman Senate during the period from 50 to 60 AD. It is believed in one theory that the was written as a reaction against said oppression. She was regarded in the same light as the devil as the assumed Hebrew pronunciation of her name as an emperor, Nero Caesar being pronounced as "NRVN QSR", equates with the "". This name and the "Beast of Babylon" refers to Rome itself and it is not an alias given to her as an individual.

History
Nero's father was, cousin of the Fourth Emperor, ; and her mother, Julia Augusta Agrippina, was the younger sister of Emperor Caligula. Because Nero's father was considered to be a weak man, Nero was barred from succeeding to the throne. Agrippina eventually remarried to Emperor Claudius (Agrippina's uncle) and convinced him to adopt Nero as his heir, leading Nero down the path to becoming emperor by her own evil designs but started by her own mother's debauchery. Agrippina, through her plotting and manipulating, pressured (Claudius's daughter and Nero's step-sister) to marry Nero. Nero's relatives resented her illegitimate birthright and relations became strain. Nero had more affection for the nameless masses than her relatives.

During her youth, Nero was revered as a very competent judge who brought in several important lawsuits with her fairness and efficiency, though Claudius had forbidden her from doing so due to her young age. Nero eventually succeeded her stepfather after Agrippina murdered Claudius in the year 54 AD, she was enthroned emperor at the age of seventeen, which would have been extremely difficult with her origins.

After claiming the throne, Nero gave out money to all citizens in celebration. She then abolished all indirect taxes. Predictably, the public adored Nero's generosity. Nero attempted to reform a depraved government and the corrupt senate, but her reforms were stalled and met with hostility. Conflicts with the senate erupted when Nero tried to unify the Roman Empire with some troublesome provinces. In contrast, Nero boasted tremendous popularity from the citizens, thanks to her generous policies; her care for diplomacy caused 's relations in Rome to improve during later years, essentially making her the person who built the opportunity for the legend of King Arthur to be born. She was also highly praised by Persia, which lead to Rome being considered "the country of Nero" by Persia after her death.

Nero had to bicker between a corrupt Senate and her predatory mother who made policies in self-interest. Agrippina only saw Nero as a tool to become the mother of the emperor. Conflicts with her mother became more pronounced at this time. As a result, Nero hired an assassin to end her mother's life before she could deal with a troublesome senate. But the assassination failed, and the only thing she could do was cut her mother down publicly, proclaiming that her own mother tried to poison her. The year was 59 AD, that was the year that Nero's reputation as a tyrant was cemented. Nero states that since that day, she has been afflicted with headaches. Nero suffered from chronic hysteria, a result from constantly using a silver cup. Nero had been poisoned as a child, so as not to defy her mother she was given the antidote in tandem. When her mother died, she also took the antidote with her to the grave, so Nero lapsed into a fevered delirium.

Nero's life then took a radical shift after her ascension. Nero's wife, Octavia, committed suicide. Her was murdered in order to secure her influence and then drove her sole mentor, the philosopher Seneca, to suicide. Seneca's death affected Nero deeply, she considered him a father figure. According to Nero, she told him that she would over and over again, but Seneca was skeptical of Nero's word and he ended his life in Nero's house. It pained Nero that Seneca disbelieved her words. Through her selfish actions, Nero was a monster to her relatives, but she boasted popularity with the masses.

She established the "Nero Festival" in 59 or 60 AD, which was an athletic conference that took after the Greek Olympics and happened once every five years. She opened three fields for music, gymnastics, and horse riding and openly participated in the events herself. During July 19, 64 AD., there was a large conflagration that occurred to the extent of reducing Rome to ashes. The victims were contained to a bare minimum thanks to Nero's swift and adequate response as an administrator, and she earned immense popularity with the citizens by thoroughly carrying out her subsequent pledges. These measures are highly praised as "effective measures that exhausted the bounds of human intellect" even by the many historians who criticize her. She later established the Domus Aurea theater designed by herself. She was eventually driven out of her position during in 69 AD, lead by  in. At first, Nero ignored the situation, perhaps she still trusted Vindex, the inciter of the rebellion. More likely she was suffering from despair and she wished for the situation to go away. Two years later, Vindex would incite another rebellion and by then the senate had enough with Nero. The senate was so displeased with Nero's mishandling of the revolt that they called her a traitor and she was forced to escape from Rome. Nero was convinced that her popular policies and her popularity with the people would protect her from being forced to abdicate the throne. However, the public was silent and they did nothing to protect her. The Roman people had abandoned her, after she had devoted so much for them. She acknowledges that she had made an error in judgement in relying on the people. Still, Nero did not resent them, instead she was saddened by their lack of uproar, "it was my greatest error to love them in a way that they could not understand."

She eventually decided to kill herself, though such an end was considered unsportsmanlike by her. She stopped herself many times, having cried about "how can such a magnificent artist disappear from this world?", but as those who betrayed her closed in she quoted a line from Homer's Iliad, "Hark, now strikes on my ear the trampling of swift-footed coursers!", before finally stabbing her own throat with a knife. After Nero's suicide, a soldier delicately wrapped a cloak around Nero's body, "too late. This is fidelity," Nero said. Those were her last words. 

Appearance
}}

Personality
Saber has a haughtiness that seems to more than compensate for her short stature, overlapping much with the personality of Gilgamesh. She refrains from asking how privileged Hakuno feels by summoning her, and grants them the honor of being her Master. She feels that, as her Master, they can be allowed to act as her equal without having to use honorifics. Often when given the choice to answer to her, only a single affirmative choice is offered rather than allowing for a negative response. She believes that anything she does must be perfect down to the smallest detail, such as a number of flawless victories to make her feel on top of the world after displaying perfection in her swordplay. If Hakuno denies to be her Master, she claims she cannot understand what they are speaking about, believing it to be some form of Oriental humility. She refuses to accept the answer, and declares that her tolerance allows for a single mistake from them. When recounting the Servant Classes, she names some, and then claims that the rest are not of any importance. Only the Saber class has any worth, and as it is known as the best of the classes, it should be obvious that she is Saber.

Saber has a different definition for love as she understood it. According to her, her type of love was selfish. When she gave it, she expected something in return for it was not unconditional. To Saber, the more tender type of love was foreign and incomprehensible. She acknowledges that she has a different value system than the people. Nero's love burnt out offering and devoting everything. Her passion burned brightly, without regards to permanence. Nero loved her citizens as she thought was right. But, the love her citizens proffered was different, and the difference invited Nero's fall. Saber regrets that she could not share in the love that the masses embraced so naturally. Because she could not express her love in a way that can be understood, she did not receive love in return, "while this woman could love more than any other person, she could not experience the joy of being loved. Her lavish expressions of love were not enough to satisfy her people." The thought of dying without anyone loving her could be one of the reasons why she hesitated pushing the dagger into her own throat.

She identifies herself as being short, but claims it does not matter in determining superiority. As she does not mind it, she firmly believes others should also not mind as well, and declares that no comments about her height, especially the terms petite or short, should be made. She finds being addressed as "princess" to be an insult because she is a grown woman, and instead prefers to be addressed as empress by her enemies.

She gives off the impression of a valiant young man in crimson, and she has a masculine bearing and tone of voice, leading Hakuno to think she may have been raised like a boy. She acknowledges that the reason she wears men's clothes is not that she is trying to project an imperial image, but because she actually enjoys wearing men's clothes. While her brusque attitude and gallant actions would imply that she values valor above all, she actually identifies her core as a maiden due to her adoration for beauty. She still does not allow gender to sway her preferences, and believes the true orientation of her soul to be half and half. Firmly routed in the middle of the two genders, she personally finds her ability to go either way admirable. She becomes attracted to Hakuno regardless of their gender, and eventually even declares her love for them.

She often refers to her Master as Praetor, which was a title granted by the government of Ancient Rome to men acting in one of two official capacities: the commander of an army or an elected magistrate. She comes to develop feelings for Hakuno, and discloses her true identity to them for that reason. She is worried about the negative connotations that come with her identity, and does not mind if she is called a tyrant or the Whore of Babylon by them. Even if she is disliked, she will simply work hard to become worthy of Hakuno's love and take their heart. While she claims to be able to endure the pain, she looks like a child who is trying really hard not to cry while stating it.

Arts
She feels she is an artist before an emperor, truly thinking that she is the pinnacle of the arts and "an artist who rivals the god of arts ." Citing it as her true calling, she boasts various accomplishments, such as writing and singing songs, painting, sculpting, writing, fashion design, architecture, acting, and metalwork. She cherishes the theater the most, but still prides herself on the rest of her works. She feels that only through art can she express what she feels, as she finds it difficult to do so in a normal way. It was said that in her final hours that she expressed her anguish that an artist such as herself had to die. Her main concern was that her act of suicide was punishing the public by having "such a magnificent artist disappear from this world." She is sensitive to praises and can be quite easy to manipulate when flattered.

She claims to have been popular, citing a small girl laying a crown of flowers upon her head after returning from a triumphant battle even though that has all to do with her being an emperor. She acknowledges that not all of her works were masterpieces, but thinks some of them were quite good. She knows that not many people appreciated or understood her artistic talents, but simply suggests that her critics were not advanced enough to understand her artistic vision. She claims she mastered it all in the name of art, so even if no one valued them, she was satisfied just having them made. She was able to express her love for her people through her works. She eventually decided that no one understands genius, so, having grown accustomed to the public lacking understanding in her art, decided that faith in herself is enough.

Despite her "humility", she does not like to be criticized, and will go to great lengths to protect her artistic integrity. They were panned by her friends, and she was once told, "We are friends and I support your government, but I cannot understand eighty percent of your art!" by her dear friend. She almost murdered him in an outburst of rage afterward, but managed to stop herself. She would often perform for the masses at her Domus Aurea, but spectators would frequently leave midway through her performances. She was so enraged by this obvious act of disrespect that she ordered all entrances to the theater to be sealed, forcing the audience to sit through her entire performance until the final curtain fell.

She praises beauty above all, stating that "Beautiful young boys are good. Beautiful young girls are better. My singular preference is beauty!" She greatly expresses a desire to fight Greek Heroic Spirits like Atalante, because of their beauty. She has a certain fixation on Heracles, causing her to create a legend after publicly strangling a lion with a in an attempt to emulate him by reenacting his exploits. While she was trying to prove her own might was as great as that of Heracles, her citizens were left unimpressed by the display and attempting to view Heracles as a rival causes the protagonist to think of her as a megalomaniac. She felt the achievement could potentially have been surpassed by Hakuno if they had been in a public coliseum upon defeating a large number of rare enemies. She likes beautiful speech, commenting that Hakuno speaks with few, but beautiful words when she was first summoned, either that or she is greatly unconcerned with their laconic speech.

Emperor
Her characteristic anecdote is that she was an administrator for the citizens. She believes herself that she was a tyrannical emperor who injured the lives of many and met an ugly end. She does not deny that is the truth of her rule, but she is not ashamed of it either. While she has regrets about her life and moments where she went too far, she feels all that matters is that she was true to herself in everything. She is not one to cave to others' assessments, but she values the opinions of Hakuno.

She doesn't like to be directly called a tyrant, even by her Master, and while the assertion is true, she would rather be thought of as an earnest emperor incapable of separating business and pleasure. It makes her slightly angry, but she quickly calms down once her position is understood. She claims that even a poorly regarded emperor is still an emperor, and that she will defend her Master proudly as the best of Servants. Due to her legend, others, such as Gawain, refer to her as the "Whore of Babylon" (バビロンの妖婦士) as an insult.

She has great pride in herself and her actions. Even though she does not wish to give her name, simply being asked about it brings her great happiness. She claims that it is the pleasure of those with regal natures to dignify the queries of those around them with answers, and gets so caught up in the mood that she almost gives her birth name without even thinking about it. She feels that she must always speak with the air of an emperor, speaking according to her parents' expectations of her in childhood and how she was raised. She was never allowed to speak plainly since leaving childhood, and speaking casually would be denying what she has become, throwing away all that to which she has devoted herself. While doing so would allow her to regain her humanity, she speaks with certainty that such a day had never occurred and will never come.

She lived a luxurious lifestyle. She voices her disappointment over the scenery of the underwater arena, exclaiming that view it offers simply looks too much like the aquarium she owned during life. She has no direct interest in monetary gain, but admires the trappings of wealth and believes that treasure cannot be ignored.

Saber by a Hair's Breadth
Saber by a Hair's Breadth (セイバー危機一髪) is a promotional flash game set during Saber's life. Wishing to take a bath after working up a sweat, she has an unnamed Roman soldier heat it for her. While he initially gets it right, he quickly breaks the oven and overheats it, causing him to run in after hearing her shouting and see her in the bath. She doesn't have any issues with him viewing her, and instead, asking if she fascinates him, comments that he must have a heart that admires beauty. She asks about his particular likes, and says that, as long as he has no wicked thoughts, that she will forgive him.

There is no need for her to run away or hide as his emperor, so she even offers to model for him. After she gets out of the bath to do so, the soldier faints from embarrassment, causing Saber to have him taken out. She chides him for causing her trouble, but says there is nothing wrong with having the spirit to admire beauty. Commenting that they would have gotten along, she says they may meet in another time and place, and says she will leave things to him at that time.

Fate/Extra
Saber is one of the selectable Servants in Fate/Extra along with Archer and Caster. However, in the first place, there isn’t a Master to be found who would summon her. Her true name corresponds to great evil in a certain religion, and the end of her life was a miserable one. Just as much as she is an emperor, she is also an artist with unshakable faith in her own genius, and the only absolute justice to her is “beauty.” Whether ally, enemy, her citizens, or herself, she will not love anything that does not fit into that category. That holds true even for a Master. For sure, she will never obey someone she finds unseemly. There’s no magus who would want to make use of a weapon who judges matters based on something like “beauty.” Contracting with this Heroic Spirit is simply too risky.

"...Well, that’s only natural. Magi are clever and calculating creatures; certainly not fools who would entrust their lives to me."

- Saber

And so she spent her days in ennui in the Moon Cell's Throne of Heroes. Though she gets lonely, her pride overcame that. She decided not to settle for just anyone, planning on only contracting with a genius of her level. And so, at the end of another round of preliminaries. Just when she was about to leave, thinking that there was no one to call her this time either, she heard a faint voice. When she turned, she saw a nameless someone who, despite being on the verge of death, still fought to stand. Someone who was not strong, had no outstanding talent and wasn’t even a proper wizard. But Saber saw a kindling that twinkled like a star in the night, a kindling that refused to fade. Instantly, she rushed forward. What she had in her chest was not sympathy for that someone, but anger against the high heavens. She knew that it was the way of the world for the weak to remain weak and perish, their prayers to no avail. Precisely because she knew this, she couldn’t stand for it. What kind of heaven would ignore such powerful will? Even in the death throes, that nameless one chose not to give up but to fight. Rather than answering summons, Saber had come to the place of selection of her own volition. While groaning inwardly at the offering up of herself that she had disliked so, she speaks to the nameless soul. She first appears upon hearing Hakuno Kishinami will to continue striving to live. She admires and respects their attempt to embrace the fear of death and fight on regardless of the fate that may await them. Deciding that she will hear it even if the world doesn't, she exclaims their destiny begins right at that moment.

"Answer me————are you my ?"

- Saber talking to Hakuno

She finds their first fight together against the effigy to be unsatisfying given how long she had waited for such a moment. After explaining the details of the Holy Grail War, she says she will keep her identity a secret for the time being to avoid having enemies find out. She will eventually reveal it as she gets to know them more. She turns the private room into her audience chamber to answer any grievances they may have for her.

They face Shinji Matou and Rider in the first week. She hates Shinji, and compares him to a talking rat. Once they finally reach the battle, she finds the Coliseum to be lacking, as it bears little resemblance to the Roman Coliseum and lacks even a single spectator. She believes she has to make up for the tackiness of the stage with a brilliant display of bravery. After Shinji and Rider's defeat, she claims that she wanted to hang Rider, but chooses to drop her ill will after she comes to feels pity for her instead.

After the battle, she comforts Hakuno over their feelings towards Shinji's death. She understands the need to lament over Shinji's death even if their friendship was only brief. While someone like Rin will abandon her civility to be emotionless towards the deaths of others, she claims that she won't do such a thing. She has come to like Hakuno even more after their recent ordeals though she is unsure of the exact reason.

She likes those who are kind, and while their tears have no beauty in them, she is still moved by them nonetheless. She encourages them to forge onward towards the end of the Grail War. The stronger wish is not that which triumphs in the end, but rather the wish that is more beautiful. Their wish may be a small and frail seed, but it will blossom beautifully by the end as long as they keep winning and let resolution bloom in their mind.

After the second round begins, she is wary of Dan Blackmore due to his great experience and Hakuno's lack of motivation. She dislikes Archer's style of battle, as she prefers direct combat and hates those who attack from the shadows without any refinement. She thinks his actions lack any beauty, and takes a particular dislike for his poisons, only for the fact that she thinks he could have used better ones.

She suggests that Archer and Dan cannot communicate soul to soul, so their defeat lies in observing the differences in their philosophies. She prefers Hakuno, who only relies on willpower rather than ability or philosophy, and she entrusts herself to it without question.

Last Encore
Saber was seen fighting against Saver, but she was overwhelmed by Saver.

She was summoned by the male Hakuno Kishinami and Saber defeats the petrified, deteriorated and unrecognizable effigy of Archer.

The pair enter the Moon Mile Ladder. As they wait for it to reach the first floor, Hakuno is slightly shocked when she decides to join him in the bath, unconcerned about being seen naked by a man. Slightly confused by his amnesia and ignorance of his situation, she explains the nature of their world and of the Holy Grail War, and becomes impressed when he agrees to fight despite the risk of dying. She tells Hakuno she will tell him her true name when the time is right.

When they reach the first floor, she becomes shocked that instead of a battlefield, it is a festive city, though she becomes taken in by the sights. The pair tour the city and eat at a cafe. At a bar, they meet a woman whom Saber mistakes for a Master and tries to challenge her to a fight, but the woman explains that all the Masters gave up their Servants to be able to live on this floor in peace, which upsets Saber. Outside, they are surrounded by women in police uniforms, which excites Saber as she explains she is attracted to both pretty boys and pretty girls.

The women take them to the mayor's office. Shinji Matou reveals himself as the mayor and explains that he has suspended the Grail War and created an area of peace, with NPCs to tend to a Master's every need. He invites Hakuno to become a citizen, as long as he gives up Saber. Saber becomes slightly scared when Shinji says the Servants become "recycled" for raw materials and energy, but Hakuno refuses the offer. Enraged, Shinji separates the pair with a firewall and summons Darius III, Fergus and Leonidas, explaining that he decided to save a few of the Servants and reformat them as Berserkers. Saber fights them while telling Hakuno, who is being attacked by the police women, to stay alive until she can reach him.

After dodging and parrying their attacks, she tricks them into breaking a hole in the firewall and reaches Hakuno, who passed out after defeating the police women. Rin Tohsaka arrives on a flying motorcycle and calls out to her, so she picks up Hakuno and jumps on the cycle to escape. Rin takes them to her apartment and treats Hakuno's injuries. When he wakes up, Rin gives them both mana-replenishing drinks and explains how Shinji came into power and suspended the Holy Grail War, thanks to a strange circle in the sky called Chakravatin disrupting SE.RA.PH.'s influence. Offended by the very notion of disrupting the Grail War, Saber accepts Rin as an ally in taking Shinji down.

The next day, Rin helps the two sneak into the mayor's office before staying behind to fight the Berserkers. They take the elevator and are shocked to arrive in a school setting. They find Shinji, who accepts their challenge and floods the city before calling upon Rider to fight her. She leaps from place to place, dodging Rider's gunfire and cannons from the Golden Hind, but is eventually knocked into the water. She finds a sunken ship and tries to take control of it with Imperial Privilege, but runs low on mana and starts to drown. Hakuno dives down to her and kisses her to restore her energy.

She rises from the water and reveals she figured out Rider's true name is Francis Drake, and Drake congratulates her. Saber takes control of the sunken ship and rams the Golden Hind with it, distracting Drake long enough to board the ship. She then charges Drake and impales her when Drake runs out of bullets. Saber looks on as Drake, Shinji, and Hakuno exchange some final words before Drake and Shinji die. After they die, the city reverts to ruins and Saber remarks that this was what the first floor was supposed to look like. The Moon Mile Ladder arrives to take them to the second floor, and Rin joins them.

She and Rin bathe together and she asks Hakuno to join them, but he declines. Rin marvels on how they seem to be underwater, and she explains there is an ocean between the first and second floors. She gets up and walks into the main room wearing only a ribbon and comments on Hakuno's willingness to fight despite having no real motivation, and says they will discover what he really wants in time.

They arrive on the second floor in what appear to be ruins in a forest. Almost immediately, they are shot at by a sniper. She effortlessly deflects the bullets, then runs with Hakuno to the cover of the forest. Hakuno amazes her by being able to tell the sniper was in a tower in the distance, and thanks her for all the times she saved his life. She says he should smile more often, and that no matter what happens, he should appreciate all the beautiful and fun things in life. Archer attacks them, angering her for interrupting her time with Hakuno. When Archer spreads a poisonous mist, she tells Hakuno to run as she deflects arrows from the concealed bowman. Archer taunts Hakuno on not having a real motivation to fight, which angers Saber as she tells him to stop hiding and fight her head on. She is eventually hit in the chest, which weakens her even as she pulls the arrow out. Hakuno uses a Command Spell to increase her power, allowing her to ignite her sword and destroy several arrows and trees at once, but the effort weakens her enough that she drops her sword.

Just as Archer fires another volley of arrows, Rani VIII arrives and destroys the arrows with magic, forcing Archer to retreat. Rani VIII takes them to her cabin and treats her wound. Around this time, Saber and Hakuno suddenly realize Rin is not with them and have no idea where she is. She finds Rani VIII familiar, but the woman claims they have never met before. The woman explains that she lost her Servant and that Archer's Master had been murdering every Master who came before them. Saber is exhausted and goes to sleep, bidding Hakuno good night.

The next morning, Hakuno is depressed and worried after learning from Rani that it is currently the year 3020 instead of 2020 like he thought. She tells him not to worry about such things, as she personally does not care what time period she is in. Rani tells them about how Archer's Master Dan Blackmore had previously lost and is not an actual participant in the Holy Grail War. The two had been killing every Master and Servant that came before them in a futile attempt to ascend to the third floor. Rani also explains that Archer is Robin Hood, and that his arrows are poisoned and he can detonate the poison at will after dropping his invisibility. The three form a plan where Saber will engage Robin while Hakuno and Rani head to the tower in Rani's motorcycle.

Saber admires the motorcycle as they put the plan into action. Saber battles Robin, boasting that Robin may be famous for stealing from the rich, but he will lose to her, the formerly rich. She calls him out on needlessly murdering the Masters when they will gain nothing from it. Robin retorts that all Dan has is his pride in battle, and he will not deny his Master. She eventually gets shot in the arm and Robin tries to detonate it, but she deliberately bleeds out the poison, using her Thrice-Setting Sun ability to survive the blood loss. She then mortally wounds Robin, who peacefully remarks that Hakuno had defeated Dan as well, prompting her to hurry to him.

The second floor starts to fall apart with Dan's death. The Moon Mile Ladder arrives and gives them two minutes to get in. Hakuno wishes to retrieve Rani, who had been wounded and left in the forest, but Saber tells him to leave her behind, as they have no time and Rani had earlier wished to stay. Hakuno reluctantly leaves Rani behind and they enter the Moon Mile Ladder, which ascends to the third floor as the second floor is destroyed. Inside, they find Rin, who remarks that Rani got what she wanted even in death. Annoyed, they ask where she had been.

Medical Play and Saber
Medical Play and Saber (セイバーとおいしゃさんごっこ) is a promotional flash game for Fate/Extra CCC. Hakuno helps Saber while she is sick, first checking that her temperature is at 39 °C. She remarks on having had no appetite, though Hakuno offers to feed her rice porridge to her joy. Eating proves to make her feel better, but she is drenched in sweat. Having not had a bath recently, Hakuno wipes down her body until she feels better. Before she can take the time to fully rest and recuperate, the time spent with her causes Hakuno to also fall sick, and she claims that it is her turn to care for them and provide a special lullaby. After the story, Saber promotes Fate/Extra CCC and mentions that the game had absolutely nothing to do with the main game.

Fate/Extra CCC
In the prologue, Hakuno hears Saber's voice who begs Hakuno to wake up and remember her, but Hakuno has no memory on who the voice belongs to. Once Hakuno is devoured by BB's shadows, Hakuno once again hears Saber's voice and reaches out to her. Saber breaks the barrier to save Hakuno and took Hakuno to the new school. When she reached to the Far Side of Moon Cell, she wore her new costume "Saber Bride."

In Chapter bad end, BB separates Hakuno from Saber. Hakuno travels to the World of Logo to search for her. Hakuno eventually regains Saber, unseals her noble phantasm and they both face BB's shadow Requiem.

She develops a rivalry relationship with Elizabeth. In chapter 7 Hakuno enters inside Saber's Innercore Harmonics. Hakuno temporary formed a contract with Elizabeth, they fought against the Zero Model of Saber.

In Saber's ending, Hakuno returns to the Moon Cell Holy Grail War as seen in Fate/Extra. Before Hakuno gets deleted, Saber saves Hakuno from the process, intending to keep their promise to get married. She activates Aestus Domus Aurea, which takes the form of a church and Saber appears in a wedding dress.

Fate/Extella
In Fate/Extella, Saber and Hakuno are the winners of the Moon Cell Holy Grail War. Her main party consist of herself, her adjutant Nameless, Gawain, Cú Chulainn, and Li Shuwen.

Flame Poem
Greeting the newly awakened Hakuno, Nero becomes concerned about their health upon seeing their troubled face. She then dramatically reintroduces herself but becomes concerned again when they remain confused. Nero expresses her regret of letting Hakuno go to the Moon Cell core alone, and asks what transpired there as they slept for an entire day upon returning. However, Hakuno doesn't remember, so Nero takes them to her room to help them feel more relaxed. She then reexplains the Moon Cell and the basics of the Holy Grail War, and how they were victorious in the war. Afterwards, Nero tells Hakuno to rest before explaining things further. Before falling asleep, they ask Nero about the ring on her finger; she reveals it as the Regalia, the symbol of their victory and sovereignty in SE.RA.PH.

The next day, after greeting the now well-rested Hakuno, Nero tells them that she'll guide them through SE.RA.PH. Before that though, she introduces her generals: Nameless, Gawain, Cú Chulainn, and Li Shuwen. She then orders her generals to go to their posts before preparing to depart with Hakuno. Before leaving however, Cú Chulainn asks her why Hakuno sits on throne instead of her since she wears the Regalia. Nero answers that her current obligations on the front lines for the reason Hakuno sits on the throne in her place and that her rule is thanks to their victory in the Holy Grail War. Afterwards, she shows Hakuno how SE.RA.PH. is reshaping itself, and advises them that the rules are different as Hakuno will be targeted as much as her. Enemy Attack Programs then spawn; Nero explains they're after Hakuno before going to fight them. Nero becomes shocked when Hakuno is absorbed into the Regalia after they expressed their desired to aid her in battle. As she continues to defeat the enemy programs, Nero eventually encounters Elizabeth Báthory, the leader of the invasion. Elizabeth escapes however, commanding the programs to attack Nero, who goes on to defeat them and later Elizabeth. After suppressing Elizabeth's invasion, Nero decides to take Hakuno to her room to treat them after they're suddenly assailed by pain. However, they are confronted by Tamamo no Mae, who Nero explains had aided Hakuno in the war but schemed to take the Holy Grail for herself. Nero then becomes shocked that Tamamo also possesses the Regalia and even more so when she sees another Hakuno. She asks Tamamo why there are two Hakunos, but Tamamo doesn't answer instead declaring herself ruler of SE.RA.PH. and declares war.

Returning to her throne, Nero uses the Regalia to survey all of SE.RA.PH. to confirm that Tamamo had conquered half of SE.RA.PH. She then attempts accessing the Moon Cell core to get more information about the other Regalia and Hakuno, but is denied much to her frustration. Archimedes then appears and introduces himself as the system engineer, and reveals an unknown being attacked Hakuno at the core. He continues that the attack had divided the Regalia, which caused the Moon Cell's 14,000 year scheduled system update to be incomplete. He requests Nero's permission to use the Regalia to complete the update, explaining it as the cause the hostile programs spawning. Archimedes also says he rescued Hakuno, which Nero commends him for. He tells her that the Regalia's sundering caused Hakuno's amnesia as their being was split with the ring; their mind with Nero and their soul with Tamamo. Archimedes then offers his services to Nero, who accepts by naming him her strategist. Afterwards, she and Hakuno talk about their current circumstances with both deciding to take back their lands from Tamamo and unite SE.RA.PH.

On the battlefield, Archimedes explains to Hakuno and Nero about the hidden power of the Regalia, which lets Nero enter her Moon Crux form. After defeating groups of programs, she is ambushed by Medusa, who casts Blood Fort Andromeda over the area to weaken Nero's forces. She then dispels the bounded field and afterwards goes to defeat Medusa and Lu Bu. With the enemy territory conquered, Nero and Hakuno proceed to return to base, but they're interrupted by Elizabeth's sudden appearance. She proclaims that SE.RA.PH. belongs to her and every sentient being shall bow to her. Calling herself Dark Eliza, Elizabeth declares she has come to conquer SE.RA.PH., but Nero is unconcerned by her declaration. She instead offers to have a collaboration concert with her once SE.RA.PH. is united. Elizabeth rejects her offer, and demands the Regalia, threatening to tear Hakuno apart if Nero doesn't hand it over. But Nero once again ignores her, then returns to base with Hakuno after Elizabeth leaves.

The next day, Nero pleasantly listens to Archimedes's report that her forces have conquered approximately 80% of SE.RA.PH. She declares that the time to assault Tamamo's main stronghold has come, but Gawain reports he felt a powerful source of mana while scouting. He states the mana be similar to his sword, Excalibur Galatine, and advises Nero to be cautious against the possible Servant similar to him. Returning to her room, she and Hakuno talk about the other one with Tamamo.

After Hakuno is rested, they and Nero enter Mare Luxuria, where they're soon confronted by its ruler: Tamamo and her Master. Tamamo soon leaves and commands her army to attack. After defeating Tamamo, Nero prepares to finish her off but is stopped by the other Hakuno. Sheathing her sword, she demands Tamamo to surrender her Regalia and be her subject. Archimedes then appears and tells her that the two Hakunos will reunite once the Regalia is rejoined, something that shocks both Nero and Tamamo. However, before any discussion can be had, Elizabeth suddenly appears and steals Tamamo's Regalia. Elizabeth puts the ring on, but it soon goes out control as she is unworthy. The ring then disintegrates, prompting Tamamo to retreat with her Hakuno. Nero tries to stop her, but Tamamo says that with the other Regalia they have nothing to fight over. After Elizabeth leaves, she listens as Archimedes contemplates the impossibility of the Regalia breaking and how the system update will completed with it gone. Nero advises him to regroup and think of a new plan. Someone then suddenly appears through a break in the world wearing yet another Regalia, and proceeds to attack Archimedes with Void Cells. After seemingly destroying Archimedes, she proclaims herself to be destruction itself and proceeds to destroy Tamamo's castle with her sword. Nero then hears Hakuno call the Servant, Altera, but knows their voice came from beyond the break. Then to her shock, another Hakuno emerges from the break; Nero asks them why they don't remember her when the others did. However, Altera attacks again, forcing Nero and Hakuno to retreat back to base.

The following day, Nero is relieved to see that Archimedes had managed to escape. She asks him about the third Hakuno to which he answers that they're likely Hakuno's body. He continues that the three Hakunos are independent digital lifeforms; they usually require their mind, body, and soul to be connected. However, Archimedes warns the mind is the least stable of the three as it will fade away without a dedicated vessel like body or soul. He confirms that Altera was indeed wearing the Regalia, and answers Nero that restoring the Regalia will restore Hakuno if they place the mind in a new cyber-frame. Delighted by his answer, she boasts that Altera will yield to the full force of her army, but Cú Chulainn appears and cautions her to be careful. He warns that Altera's Noble Phantasm can't be explained by normal rules, which he learned after briefly fighting her. He then tells Nero that while she and Hakuno were asleep, Altera's forces succeded in conquering 80% of SE.RA.PH. in half a day. Cú Chulainn continues that he and the other generals sealed off the remaining 20% from the rest to prevent the enemy from storming the palace. After Hakuno prevents her from dwelling even further on her losses, Nero declares they will reclaim their lost lands and unite SE.RA.PH.

Returning to the battlefield, Nero encounters Altera, who retreats after commanding her forces to attack. After defeating the enemy, she witnesses Altera emerge from a break in the world. Nero asks her where the third Hakuno is, believing them to be in the Regalia, which Altera confirms. After expressing her disgust at the third Hakuno being kept prisoner, Nero is asked how she was able to defeat Iskandar despite their parameters being leagues different. She answers it was due to her bond with her Master, which had lead them to victory in the Grail war, which merely confuses Altera. After clashing briefly, Altera demands Nero to hand over Hakuno and the Regalia, saying she'll spare both of them if she does. Nero refuses and attacks Altera, but is fended off and left fatigued. Elizabeth suddenly appears and makes Altera retreat when asked why she's showing mercy; Nero wonders what the countess wants. Elizabeth reveals that her new powers were granted by Velber, the alien threat that appears every 14,000 years. Heeding Elizabeth's advice, Nero returns to her palace and ask Archimedes about Velber. The engineer answers he withheld the information about Velber, stating it was no coincidence that Nero received the Regalia in time for the system update. He continues that Velber is the only being that the Moon Cell considers a threat, which appears every 14,000 years to destroy all of human civilization. He states that Velber stole some of the Moon Cell's data when it passed by the moon fourteen millennium ago. Archimedes reveals the system update was for the purpose of defending against Velber, and the holder of the Regalia is meant to protect SE.RA.PH. After declaring she'll protect SE.RA.PH., Nero returns to her room and wonders who Altera truly is.

Meeting with Archimedes later, Nero is told by him that Velber was why Hakuno was attacked at the core. He also reveals to them that Altera is an agent of Velber; Nero contemplates on how to combat the celestial entity. Archimedes then tells her that she can use the Regalia to build up the Moon Cell's power as well tailor its features as she sees fits. He also reveals the Regalia was designed to combat Velber and the likes of Altera. Archimedes continues to tell her and Hakuno that Altera is a Heroic Spirit from Earth recorded in SE.RA.PH. as a Servant that was chosen to be Velber's agent. He warns that Altera is extremely formidable with her own Regalia as well an army of Anti-Cells and other Velber-infected programs from the Zero Dark. Nero asks him what Altera's True Name, but the engineer says he can't find records of her among the known Heroic Spirits. She states that discovering Altera's True Name will aid in combating her; Archimedes decides to investigate the matter further. Before leaving, he reveals that the entity that attacked Hakuno at the core was the same titan that laid waste to the Earth and Moon 14,000 years ago. He also reveals that same titan was sleeping in the Zero Dark after the last invasion but awoke with Velber's approach as Nero surmises. However, Archimedes states the titan was near-death, so Velber, requiring a new agent, ambushed him and Hakuno while registering the Regalia. He was able to save the mind and soul after Hakuno was split apart, but the body was taken and forced to summon Altera. He then reconfirms to the emperor that restoring the Regalia will restore her Master, and answers that the soul will be drawn to the mind and body once reunited. Nero worries the soul may refuse a new vessel, but Archimedes answers that the body will gain a new mind and soul if the originals are lost. Nero realizes that Altera holds the advantage as she possesses Hakuno's body, and she only needs to destroy the other two to gain a perfected Hakuno.

Later in her room, Nero senses Altera's presense, and demands to know why Jeanne d'Arc joined her. She doesn't answer and fight between two soon erupts with Altera again coming out the victor. Commending her strength, Nero asks her why she's happy and has yet to destroy her despite calling herself destruction itself. After Altera leaves confused about herself smiling, Nero meets with her generals and Archimedes before setting out to finally defeat the Forces of Destruction.

On the battlefield, Nero's forces are soon attacked by Gilgamesh's Gate of Babylon. After defeating him, she continues to fight through Altera's army. Eventually confronting Altera in her castle, Nero is pleasantly surprise that to learn she is Atilla the Hun before fighting her. She is nearly victorious, but Altera launches Teardrop Photon Ray at her. However, Nero uses Moon Crux form, focusing her resources on full defense despite knowing the Regalia may break to defend against the blast. She then deploys Aestus Domus Aurea, which causes Altera to be enamored by its beauty. Seeing her reaction, Nero tells her that there is more to her than destruction before finally defeating her. Afterwards, the fatigued Nero and the defeated Altera admire each other's abilities. The third Hakuno then emerges from Altera's Regalia; Nero learns that Altera is truly a devoted Servant like herself. She tells that her and her Master will become her subjects, deciding to not fuse their Masters as she originally intended. Archimedes then appears and congratulates Nero on her victory, despite the probability being low. However, disgusted by her sparing of Altera, he reveals himself to a servant of Velber and attacks Nero. He then forcibly transforms Altera into Sefar, who goes to attack Hakuno, but Nero saves them.

Failing to reach out to Altera, Nero expresses concern for Hakuno when they're assailed by pain due to the other one being broken down by Sefar's presence. She then goes on to fight her in order to protect both Hakunos. After destroying Sefar, Nero watches as the third Hakuno disappears. Archimedes then appears and reveals that Hakuno's time is shortened with the body now. After he states he'll have to redo his plans, Nero challenges him to battle, but he sees no need to as she used all her power. After Archimedes slides into another world before a Quantum Time-lock activates, Nero grieves as Hakuno begins to die due to their body disappearing. However, she completes the Regalia and uses it to create a new body for Hakuno. But, they remain unconscious for an unknown period of time as Nero waits for them to one day finally awaken.

Orchid Words
After her invasion is suppressed, Nero confronts Tamamo, who defeated Li Shuwen to her surprise. Denying Tamamo’s claims that she pushed her into the Far Side, Nero soon announces that the true threat to SE.RA.PH. is approaching. She is disappointed when Tamamo refuses to help and proceeds to fight her. However, neither are unable to overpower the other, even Tamamo in Moon Crux form. Nero then leaves after expressing her disappointment in the fox.

During Tamamo’s invasion of Mare Aurum, Nero orders Gawain to use his Numeral of the Saint to kill Tamamo. However, she soon confronted by her in the palace, and declares she’ll free the other Hakuno from the fox. After defeated by Tamamo, Nero declares she must save both SE.RA.PH. and the earth. Hakuno then appears to protect when Tamamo goes to finish her off. Her Regalia is then taken, and calls Tamamo a monster when she declares she’ll conquer SE.RA.PH. Nero afterwards leaves, telling Tamamo that she’ll temporarily lend her the Regalia.

Dawn
Late in Altera's conquest of Mare Male, Nero orders Cú Chulainn to fight to her so as to weaken her for herself. After he retreats, she introduces herself to Altera and compliments her strength and beauty. Deciding not to fight her, Nero tries to talks with Altera, but is attacked by anti-cells summoned by the latter. She manages to dodge it and tries to ask for Altera's name, nearly retrieving another attack in response. The attack is stopped however by the third Hakuno, who as reveals Altera's name in the process. After they emerge from the regalia, Nero identifies them as her Master's body. Lamenting that the other Hakuno has no memory of her, she uses the regalia to evade another attack.

As Altera prepares to conquer Mare Aurum, Nero is advised by Archimedes to send Gawain to the core once they've hacked through to it. Later she fights Altera in her Moon Crux form, but she is repeatedly lead away to enemy sectors. However while Gawain is fighting Altera, Nero takes her remaining army to invade the enemy base near the core.

Eventually once Archimedes hacks through to the core, Nero enters and later confronts Altera there. She explains to Altera that her generals didn't pledge loyalty to Velber but her out of respect. Stating she feels the same way, Nero fights Altera even learning her identity as Atilla the Hun during the course of it. However, she is defeated and destroyed by Teardrop Photon Ray.

Golden Poem
After Hakuno wakes up, Nero does what she did in the Flame Poem arc. Archimedes then suddenly appears and says what he said in the Flame Poem arc, but Hakuno reveals that he actually plans to call forth Velber so it may harvest all of the Moon Cell's data. They continue that he needs to destroy the merged Regalia in order to undo the Moon Cell's jammer preventing Velber from entering the galaxy. Hearing this, Nero accepts Archimedes as her enemy and proceeds to fight him. After he retreats, she asks Hakuno to tell her everything they know. They explain that their "Body" from another parallel world transferred their memories to them as data, which is why they knew of Archimedes' plans. They continue that in the current world that their other-selves, the "Soul" and the "Body", who are with Tamamo and Altera respectively. Nero then asks them to show her their inherited memories in order to understand Altera more. After witnessing the memories, she admires the Body's dedication, and decides with Hakuno to unify SE.RA.PH. and its Servants against Velber. The first part of their plan is to retrieve Tamamo's Regalia as well as gain her corporation.

After resting, Nero and Hakuno are alerted to an attack by Tamamo's forces. She then introduces her generals, though Hakuno already knows them due to the inherited memories of the "Body". She orders them to stop the current invasion of their territories, and tells them the goal is retrieve the Regalia not to eliminate the enemy. She also reveals that they need the completed Regalia to stop Velber from coming to Earth. With her generals agreeing with her, Nero tells them that she'll send them data on Archimedes and Velber. However, Cú Chulainn and Li Shuwen warn her that Tamamo's forces do not seek diplomacy but conquest. Gawain reports that Lu Bu and Karna are part of the invasion force, and Nameless also reports Medusa being there as well. After hearing all of this, Nero orders them to set forth for the battlefield.

Suppressing the invasion, Nero asks Medusa to join her, though she rejects the offer for the moment. After Medusa leaves after being promised peace for SE.RA.PH., Nero is suddenly confronted by Karna. He reveals to her that the invasion was a test of strength to prove that she is worthy to negotiate with Tamamo, and to also stop Lu Bu's rampage. He then gives her Mare Luxuria's coordinates to her before departing.

Arriving in Mare Luxuria, Nero admires its picturesque beauty while Hakuno departs to speak with Tamamo. She tells them to wait for her but they repeatedly ignore her as they contemplate how to deal with Altera, who is currently building her army. Finally getting their attention by hitting them, she expresses her desire to spend every moment of their journey to save the Moon Cell with them. She continues that Hakuno should follow the path they know to be right instead of retracing the steps of the "Body". Attack Programs sent by Tamamo then suddenly surround the both of them. Defeating the enemies, Nero and Hakuno soon arrive in Tamamo's palace to confront her. Tamamo appears and greets Hakuno; Nero begins to argue with her until Hakuno reminds her of their purpose for coming. Tamamo however insists that they fight to prove whose more worthy of the Regalia, but Hakuno convinces her to stop. Nero and Tamamo then watch as their Regalia along with the "Mind" and "Soul" of Hakuno become one. After the merger is complete, the two run to Hakuno and argue over them. Hakuno hits them both with a Code Cast to stop their arguing; Nero and Tamamo decide save their argument for later. Altera then suddenly emerges from a break in the world as Hakuno and Nero expected. Altera surrounds them all with anti-cells and introduces herself. Nero and Tamamo protect Hakuno from her despite their fear of her power. Nero then announces Altera's True Name to the latter's surprise. She introduces herself to her as Hakuno's Servant along with Tamamo, but Altera becomes angered at the mention of Hakuno's name. Nero and Tamamo then fight Altera until Hakuno emerges from the Regalia to talk to her. Negotiations fail though despite Nero trying to convince to believe her Master's words. Despite that though, Altera leaves; Nero declares she won't give up on her.

Returning to Mare Aurum, Nero and Tamamo meet with their general to form a strategy against Altera and her forces. Tamamo reveals to Nero that the Regalia can no longer produce Attack Programs after the merger was done. Nero accepts this as relying on endlessly creating Attack Programs would be unwise without considering the consequences. She says that they'll just rely on the forces that they already have. Cú Chulainn and Nameless report that Altera's army has Top Servants, and further report that they're preparing to assault the Roman territories. Afterwards, Nero gives a speech to the generals, and she allows Tamamo and her generals to defend the palace before departing.

Arriving in Mare Origo, Nero and her generals face off against the Forces of Destruction. However, Her forces struggle against vast groups of Attack Programs, bombardment from Gate of Babylon, Top Servants. Eventually, she encounters Iskandar, who praises her for defeating his soldiers. Returning his praise, Nero prepares to fight him while also learning his True Name from Hakuno. Before that though, she asks him why he joined the forces of Velber. Iskandar answers he wants to show Altera a reason to fight beyond destruction by showcasing his way of conquest. Realizing that their goals are the same, Nero states that she and her Master will save Altera then fights Iskandar. After defeating him, she is suddenly confronted by Elizabeth, who is shocked to see a Top Servant defeated. Seeing her corrupted state, Nero asks her how she was corrupted so easily. Elizabeth denies the corruption and makes shallow threats that only get her Nero's pity. Angered at being pitied, Elizabeth boasts about her power while also threatening Hakuno and goes to fight Nero. Though she is able to hold her back, Nero realizes that Elizabeth is now far stronger than any Top Servant. Elizabeth invites her to come to the Zero back, opening a portal to it after leaving. But Nero decides to go through the portal as she isn't ready yet and is too fatigued to continue fighting. As their first goal of getting a way to Zero Dark, Nameless states the portal is stable, and tells her and Hakuno to get some rest.

Later, she and Hakuno talk about the latter's dream of Altera's past as the White Titan along with the Zero Dark where the Ark of the Stars, the piece of Velber quarantined by the Moon Cell, and the White Titan are. Nero expresses her desire to save Altera with Tamamo not disagreeing her wish to do so. Tamamo asks her to protect Hakuno while she stays behind to protect their home.

Nero arrives in Mare Origio and fights through Altera 's forces, defeating Gilgamesh and Jeanne d'Arc. Before entering Altera''s palace though, she discusses with Hakuno on how to save Altera whilst also stopping Velber. Hakuno suggest that they destroy the Ark of the Stars though Nero worries Altera will be harmed due to her link to the Ark. She then decides to defeat Altera and figure out how to save her afterwards. Elizabeth then suddenly appears and suggests to Nero to take Altera's sword, the Sword of Mars. After she leaves, Nero enters the palace and confronts Altera. She attempts to convince her that she' s more than a servant of Velber, but Altera refuses and attacks her. As their fight continues, Altera launches Teardrop Photon Ray at her, though in truth, she launched it at a decoy. Nero then deploys Aestus Domus Aurea that overwhelms Altera with its beauty. She then offers a helping hand to her, which causes Altera to express her wish to stay with her Master as a human. She then thanks Nero for understanding her, and prepares to give her sword to her at her request. However, to Nero and Altera's surprise, "Body" begins to disappear as their disappearance after sending their record back in time is a fixed point in time. But before they disappear though, they give their Regalia to Nero. Afterwards, Altera begins to disappear without her Master, but she is able to her sword to Nero before disappearing.

Septem: Eternal Madness Empire
During the "Septem" Singularity Nero is a living hero and the current Emperor of Rome. She is engaged in a war with the United Roman Empire, established by the many emperors summoned by Lev Lainur Flauros with the Holy Grail. However, Nero's forces are also aided by multiple other Servants, including Boudica, Spartacus, Jing Ke and Lu Bu, although Nero remains unknowing of their nature as Servants, at least initially.

When Ritsuka Fujimaru and Mash Kyrielight arrive in the Singularity, they stumble on one of the battles between the two forces and join Nero's side. Together they battle against the forces of the United Roman Empire. They defeat Julius Caesar in Gaul and meet the goddess Stheno on a nearby island, where they also defeat Nero's uncle Caligula. They also fight and defeat Leonidas when they return.

After finding out the location of the United Roman Empire's headquarters, they launch an all-out attack against them, confronting the full power of the United Roman Empire's forces and confronting enemy Servants, like Darius III and Alexander the Great. When they finally arrive in the capital of the United Roman Empire, Nero is confronted by the leader of the United Empire, Romulus, who she greatly adores and is nearly unable to attack due to being nervous of confronting him. She, however, is able to face Romulus with the help of the Protagonist, defeating him with their help. They then confront Lev Lainur Flauros himself who uses the Grail to transform himself into the Demon God, Flauros, and even summon the King of Combat, Attila. Nero and the Protagonist's party manage to defeat them, with Ritsuka and Mash leaving afterward, taking the Holy Grail with them and neutralizing the Singularity.

E Pluribus Unum: The Grand Battle of Legends in North America
Nero, in her Bride form, is summoned in the "E Pluribus Unum" Singularity. She resides in an empty town, where the Ritsuka's party meet her. She is also attacked by Fergus mac Róich, who is sent by the Celtic forces, but is defeated by the Protagonist's party, who Nero joins as a part of the Resistance against both the American and Celtic forces. She is one of the Resistance members, along with Geronimo, Robin Hood and Billy the Kid, who attempt to assassinate the leader of the Celts, Medb, managing to isolate her in Nero's Aestus Domus Aurea. However, Medb is protected by Cú Chulainn Alter and Arjuna, who battle the Resistance members. Nero fights Chulainn Alter, who manages to defeat her even while in her Aestus Domus Aurea, with the Noble Phantasm fading away along with her after her defeat.

Salomon: The Grand Time Temple
Nero is amongst the "Septem" Singularity Servant to aid Chaldea against Demon Gods Pillar.

Interlude
In her first interlude First Sailing, Once Again, she sails Ritsuka and Mash to an island in search of treasure. After landing on the island they eventually reach a cave, where they encounter werebeasts. After killing them, Nero has Mash open the treasure chest, but most of the treasure has already been taken from it. Nero then takes the remaining treasure, saying that she needs more capital for a surprise that she's preparing.

In her second interlude A Golden Business, she reveals that her treasure gathering from before was to rebuild Aestus Domus Aurea more extravagantly, which will improve her Noble Phantasm. Golems then attack the group, but Nero reveals that she had her patrons draw them to their location so they could take the materials from them. However, she decides against using the golem materials to build a statue of herself due to them being too brawny for her. But, she says that she will use them to make her theater even stronger.

Carnival Phantasm
Saber makes a brief appearance in Episode 8, during Taiga Dojo segment. She is called Red Saber (赤 セイバー). Like in Fate/Extra, she is arrogant, proud and shamelessly flaunts her sexuality, noting that her transparent skirt does not bare her flesh, but rather 'deliberately allows others to see it'. She was also disappointed that the delayed release of Fate/Extra made her too late enjoy the huge carnival she had rushed to join and that she will not be in the third season. She makes another brief appearance in the bonus episode, citing it as her debut even though Rider points out her previous appearance. She later asks if she will soon get her own show, and becomes disappointed that her screen time is ending.

Chibichuki!
She first appears with a tied Elizabeth and later with Gilgamesh, both using their swimsuit outfits in Exciting Splash.

Other appearances
She appears in TYPE-MOON Ace Omake Theater (Type-Moon Ace おまけ劇場):
 * Fight!! Ms.Blossom Cost Chapter (「たたかえ!!ブロッサム先生　コスト編) - Saber, Archer, and Caster fights Sakura, in order to save Hakuno.
 * Let Me Hear!! Ms.Blossom Merry Chrismas Chapter (きかせて!!ブロッサム先生　メリクリ編) - The Servants and Sakura celebrate Christmas.

In Type-Moon's April Fools' Day 2013, she appears in Back Alley Satsuki. Saber is a gold heroine of Tiger to protect the third temple known as the "Zoo" and she is known as Idol Emperor Red Saber (アイドル皇帝赤セイバー).

In Type-Moon's April Fools' Day 2014, she appears in TM-channel. She has her live stream channel and she is seen playing.

In Type-Moon's April Fools' Day 2015, she is the most popular artist in the Imperial Roma talent agency. She debuted in the 22nd July 2010 and she is known as the Red Saber or Nero. Her class is Idol Emperor and she is from Rome. She says she can do anything as her Skills and Hobbies. Her Tmitter user account is @tmtt15_nero.

Abilities
Normally she would not be qualified for the Saber class with her parameters, however she took care of that part somehow thanks to her Imperial Privilege skill and she would be more suitable as a commander-type Servant.

She wields a scarlet long sword called Aestus Estus: The Original Flame. It is a hand-crafted crimson sword brought with her when summoned under the Saber Class by a Master. It has the following inscription carved on it: regnum caelorum et gehenna (the kingdom of heaven and hell). She feels it is the ultimate instrument, and that muses would bow before the sound it makes. While she is a skilled charioteer that "rivals the solar deity Sol", she feels that she would not be suitable for the Rider class because of her general dislike for them. Even before becoming a Heroic Spirit, she had the skill and strength to grapple a lion and asphyxiate it with her bare arms.

Due to Hakuno's status as a "pseudo-magus" who didn't actively enter the Grail War, all of her parameters are an extremely low E rank at the beginning. All of her parameters have a medium growth rate. She has lost use of much of her power, including her Noble Phantasm. She claims the magic in her blade is weak due to that, and wishes for her Master to devote to strengthening her with haste. She can be returned to her proper level of power by increasing the bond between their souls. Aozaki Aoko offers Alteration of the Soul to increase this bond and her parameters by hacking their souls.

Combat
The skills she develops include powerful sword blows and support skills. Her skills appear to be named after aspects of her personality such as her love of flowers and her status.

Her Noble Phantasm is unavailable to her for a number of rounds in the war. It is Aestus Domus Aurea, she performs three powerful strikes and implants her sword into the ground thus activating it. It is an "absolute imperial zone" that resembles a Reality Marble and allows the owner to achieve their aspirations. It boosts Saber's parameters and negates an opponents defense, though its true effect as a phantasm is unclear.

Imperial Privilege
Imperial Privilege (皇帝特権) is a personal skill. An ability that, due the insistence of the owner, Skills that are essentially impossible to possess can be obtained for a short period of time. Skills available included Riding, Swordsmanship, Artistry, Charisma, Military Tactics, etc. With A rank or above, alteration of the corpus (such as Divinity) was possible. The Roman Emperor was no different from Gods. All skills converge at the Emperor. If the Emperor called white black, then it was black. However, even so, one could not acquire skills without basis. Since Saber was a polymath with ample curiosity, she had experience in most of the skills. For example, if Saber decided "I can pilot a jet! It is nothing, just adjust the plane according to altitude, not too different from the jet chariot I invented!" And just like that, she would figure out how to pilot the plane. With her short attention span and headache, she would soon forget what she learned.
 * Imperial Privilege - Gold Rate (黄金率・皇帝特権) - It increases the item drop rate after battle.
 * Imperial Privilege - Swordsmanship (剣術・皇帝特権) - It strengthens the power of chain attacks.

Form change
Saber's Form Change in Fate/Extella.

Nero Bride
"This time it is you, the player, who is her favorite."

- Kinoko Nasu

Nero Bride (ネロ・ブライド), also known as Saber Bride (セイバー・ブライド), is a variation of Saber present in Fate/Grand Order. Differing from being only an alternate costume in Fate/Extra CCC, Nero Bride possesses different parameters, different skills, and a new Noble Phantasm. While the regular version of Saber in Fate/Grand Order possesses traits from Fate/Extra, Nero Bride is a "what-if" version who went through an adjustment to fit with the Fate/Grand Order setting. She has never interacted with Hakuno Kishinami, so she becomes attached to the Protagonist.

Saber Venus
Saber Venus (セイバー・ヴィーナス) is a form taken in Fate/Extella through Heroic Spirit Apotheosis, which makes her the most powerful Servant in the game. She wields the Sword of Mars which she obtained from Altera and evolves herself into this powerful form in Venus' name, whom she believes herself comparable to, and defeats Velber II. Saber Venus can be unlocked in Free Mode by completing the Golden Poem arc. She maintains almost the same moveset as her normal form but some combos are changed into more powerful attacks. However, the most drastic changes are Saber Venus can't use her Noble Phantasm, activate Moon Crux, and is unable to raise her Bond Level.

Swimsuit
"Speaking of Summer, it's about resorts. Speaking of resorts, it's about extravagant hotels. Speaking of extravagant hotels, yes, a specially set up arena! Now, the Golden Theatre changes for an everlasting summer, and the Emperor Nero, Prism--In to the summer sea! That is so! Let the sunlight be carried by flowing water! Now, my opera shall resound through Chaldea!"

- Nero Claudius Caesar

Self-proclaimed, all-rounded genius. A cross-dressing beauty of the Saber-class (so she regards herself as) but this time, she has chosen to reveal herself as a beautiful lady, boldly enjoying the summer sea. She loves herself very much, but also adores the people around her. These are the majestic values of the Fifth Emperor of the Roman Empire, which are a result of her combined narcissism and philanthropy.

Applying the teachings from to the fullest degree, Emperor Nero has completed a theatrical garment that can only be seen as a specialized Mystic Code for herself. The pipe organs floating by her sides converts her alluring song into an attack, and lasers, fireworks, flame projectiles and the like are grandiosely and randomly fired. Speaking of which, why does her singing voice produce damage? That cruel truth is something Nero herself is oblivious to.

Nero was extremely displeased with having been uninvited to the Southern Island in the previous summer. This round is especially why she has procured a brand new swimsuit, and is brimming with excitement to proceed with the Summer Event. The Ishtar Cup had opened there, and she euphorically entered the race. However, a teammate was necessary, and as such, she called out to Artoria Alter who happened to be walking by, and a miraculous team was formed.

Her beloved car is the Red Venus.

Her approach towards the race is extremely oriented to the offensive. Anyone blocking her path is forcefully overcome, and even after countless clashes with the other vehicles, she is satisfied with getting past them through speed. Because Nero sees all the other teams as "Good Rivals", she enjoys witnessing their strengths, and aims towards surpassing them. Alter doesn't really care, and is only aiming towards being the top. As the end-result is the same, they don't fight with each other, which is why they are a miraculous team.

There is actually a rumor that she has better compatibility than when she is of the Saber class.

Surprisingly, even though she has turned into the Caster-class, her parameters remain the same as when she is of the Saber-class (excluding Noble Phantasm).

Creation and Conception
Saber was given a personality similar to Nasu's original idea of Iskandar. Nasu enjoyed Gen Urobuchi's rendition of the character, so Saber may have been born out of his drive to surpass him and create a different tyrant from Iskandar. She was made to look like Saber because they wanted to trick people into thinking they were the same character and surprise them upon actually playing the game.

Nasu wrote her scenario in Fate/Grand Order.

Reception

 * In the Type-Moon's 10th Anniversary Character Poll, Saber was ranked 14th and the ninth most popular female character.