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The Hydro Sovereign and the Iudex

Neuvillette is established as one of the most historically significant figures in Teyvat, occupying a dual identity that bridges the ancient world of the Dragon Sovereigns with the modern political structure of the nations. Publicly, he serves as the revered Iudex (Chief Justice) of Fontaine, upholding the rules of the court with utmost reverence and acting as the leader of the Marechaussee Phantom. Privately, and in truth, he is the successor Hydro Dragon Sovereign, the original elemental authority of the region.

The conclusion of the Fontaine Archon Quest marked a cataclysmic shift in the geopolitical landscape, confirming Neuvillette’s transformation from a constrained successor into the first Sovereign to fully reclaim the stolen Elemental Authority. This restoration followed the deliberate self-execution of Focalors, the former Hydro Archon, who sacrificed her divinity to return the power held within the Hydro Gnosis. The resulting vacuum elevated Neuvillette to the highest authority in Fontaine, fundamentally shattering the seat of the Hydro Archon among The Seven.

The restoration of his full draconic sovereignty imposes upon Neuvillette a self-mandated destiny: to execute judgment against those who usurped the power of the ancient dragons. This includes the remaining Elemental Archons and, ultimately, the "Usurper King in the heavens" (Celestia). His profile is thus defined by his immense judicial power, his recovered elemental authority, his complex relationships born from centuries of governance, and his unique, emotionally burdened persona in the public eye.

II. Background and Historical Context: The Successor of the Sea

A. Draconic Origin and the Succession of Authority

The deep historical context of Neuvillette begins in the Age of Sovereigns, when Teyvat was originally governed by the Seven Dragon Sovereigns, presided over by the Dragon King Nibelung. This ancient order was overthrown by the Primordial One (referred to by Neuvillette as "The Usurper"), who conquered the dragons and stole their fundamental Elemental Authorities. These stolen powers subsequently formed the basis of the Gnoses, which conferred authority upon the newly established Archons.

Neuvillette explicitly confirms that he is not the original Hydro Sovereign, who perished in the conflict long ago, but rather the successor. This distinction is critical, as it explained his initial confusion regarding aspects of ancient history, such as the specific mechanisms through which the Primordial Seawater was capable of dissolving Fontainians. His lineage appears to be a form of reincarnation. Prophecies, such as one found in Enkanomiya, foretold that a new Hydro Dragon would be born in human form. This requirement arose because the Bathysmal Vishaps, initially Hydro, had become "impure" after evolving to harness other elements like Electro and Cryo, necessitating a "pure" human vessel for the dragon's return.

Despite his status as a successor, Neuvillette harbors fragmented memories that tie him directly to the events of the Usurpation and the subsequent age of the Archons. Character lore indicates he remembers the day the Usurper arrived and forcefully seized the "heart of the sea" (the Hydro Authority). He also possesses memories regarding the creation of the former Hydro Archon, Egeria, and the day she committed her "sin". His successor status, coupled with this incomplete knowledge of the past, was a necessary condition for Focalors’ complex, five-hundred-year plan. Had he possessed the full memory of the original Sovereign, he would have been completely knowledgeable of the Heavenly Principles' methods and the Primordial One, potentially compromising the secretive plan to dismantle the Hydro Archon seat, or facing pre-emptive action from Celestia.

B. The Five Hundred Year Tenure in Fontaine

Neuvillette’s existence in Teyvat spans several centuries. He took on a human form, characterized by distinctive features such as pointed ears. Historical records place his appointment as Chief Justice around 500 years ago, around the time of the Narzissenkreuz storyline. Prior to his public role, he was discovered by Focalors, then an Oceanid familiar of Egeria (or acting through her human vessel, Furina). Focalors raised him in secret before bringing him into the Court of Fontaine, setting the stage for his long judicial career.

His longevity as the only Iudex has led to public recognition of his non-human nature, though his true identity remained hidden. His extended role as the Iudex was crucial to Focalors' machinations. By occupying the highest judicial position, Neuvillette ensured that when the Elemental Authority was returned, it was not merely an act of force (which might provoke Celestia) but a systemic, legal mechanism—the voluntary forfeiture of stolen property (the Gnosis) back to its rightful, draconic owner. This judicial framing of the restoration process provided a critical political and metaphysical layer of protection for Fontaine and for the act of reclamation itself.

III. Reputation and Judicial Persona: The Aloof Authority

A. The Public Face of Inexorable Justice

In the public eye, Neuvillette embodies the ideal of absolute justice in Fontaine. He is known as the Iudex and Chief Justice, highly sought after, but equally characterized by an intense aloofness. He maintains a distance from the public and struggles in dealing with human emotions, leading him to prefer being addressed solely by his surname, Neuvillette. He justifies this aloofness by stating his consciousness that "being overly familiar may bring the impartiality of the judiciary into question in some people's eyes".

His exceptional longevity has made it clear to the common citizens that he is not a typical human. Rumors have circulated regarding his nature, ranging from being an archon to being a mysterious elemental creature, or even a demon who presides over trials. While the Fontainian public knows he is ancient and non-human, the specific truth of his identity as the Hydro Dragon Sovereign remained confined to a very select few until the pivotal conclusion of the Archon Quest.

B. The Hidden Emotional Reality and the Rainfall Phenomenon

In stark contrast to his cool, impartial exterior, Neuvillette possesses a profoundly sensitive emotional nature, which is physically and elementally linked to the nation of Fontaine. A long-held local legend states that the rain in Fontaine is symptomatic of the Hydro Dragon weeping. This legend is explicitly confirmed in the narrative, as rain frequently begins following moments of great judicial stress or personal grief for Neuvillette. For instance, intense rainfall follows the devastating trial concerning Navia’s father, Callas.

The requirement for judicial impartiality directly clashes with this volatile emotional reality. The Chief Justice's aloofness and emotional restraint are, therefore, professional necessities. If he were to allow his true feelings to sway his public interactions or court decisions, his judgments would not only be compromised, but the resultant meteorological chaos would destabilize the entire nation. His personal narrative reflects a profound journey toward understanding human sentiments, noting that emotion is unlike water—it does not settle quickly once agitated, nor is it naturally inclined toward equilibrium.

His personal struggles often manifest as guilt, particularly toward those he feels he has wronged by fulfilling the letter of the law. He expresses immense guilt regarding the execution of Callas, resulting in a profound emotional distance from Navia. He feels unable to make up for the historical wrong done to her father, finding their relationship akin to observing the starry sky from the bottom of a deep lake.

C. Guardianship of the Melusines

Neuvillette serves as the principal protector and guardian of the Melusines, the unique elemental lifeforms birthed from the body of the massive creature Elynas. He regards the Melusines as dependents, successors, and the "real pride of Fontaine". Historically, he played a crucial role in bringing the Melusines to the Court of Fontaine and ensuring their integration into human society.

This protective stance stems from historical necessity. After the Melusines first came to the surface and offered gifts, they were exploited by humans. Neuvillette gathered them and strictly prohibited such behaviors, ensuring their safety and social acceptance. Dialogue confirms his deep affection and care for them, stating that he "loves them deeply" and will actively intervene if any harm comes to them, such as Sigewinne. By actively protecting and fostering the Melusines, which he classifies as the "finest example of a new sort of Hydro Vishap species" , Neuvillette fulfills an inherent draconic duty to nurture the native elemental lifeforms of Teyvat, demonstrating his alignment with the original, pre-Celestia order of the planet.

The dichotomies in his role are visualized in his approach to governance:

Table 1: The Judicial and Emotional Dichotomy

| Domain | Public Persona (Iudex) | Hidden Reality (Sovereign) | Implication |

|---|---|---|---|

| Emotional State | Aloof, detached, objective, serious about court proceedings | Highly emotional, burdened by guilt, sadness manifests as rain | The necessity for emotional containment to ensure judicial impartiality and national stability. |

| Identity Visibility | Non-human, long-lived Chief Justice (secret identity) | Hydro Dragon Sovereign (secret identity revealed in 4.1 AQ) | The secrecy was a crucial component of Focalors' strategic plan for the power transfer. |

| Affiliations | Court of Fontaine, Marechaussee Phantom, Palais Mermonia | Seven Sovereigns, Protector of Melusines | Demonstrates the division between responsibilities to human institutions and the ancient draconic mandate. |

IV. Analysis of Elemental Authority: Powers and Full Dragonhood

A. The Restoration of Full Sovereignty

Neuvillette’s power level is fundamentally divided into two phases: before and after the climactic events of the 4.2 Archon Quest. In the initial phase, with incomplete authority due to the Hydro Gnosis holding his stolen Elemental power, he was already immensely powerful. He was capable of neutralizing the Fatui Harbinger Childe with minimal effort and demonstrating visible difficulty, stemming the flow of the Primordial Seawater, a feat beyond most mortals. However, this incomplete authority meant he lacked the jurisdictional power necessary to permanently seal the Primordial Seawater threat or fully circumvent the prophecy.

The turning point occurred when Focalors, following her five-hundred-year plan, executed herself in the Oratrice Mecanique d'Analyse Cardinale and forfeited the Hydro Gnosis, thereby destroying the seat of the Hydro Archon. The return of the Elemental Authority to Neuvillette was instantaneous and complete, resulting in him regaining his "true form" and achieving "full dragonhood".

Neuvillette’s acquisition of full sovereignty made him the only Elemental Sovereign confirmed to possess 100\% of his original, pre-Usurpation authority. This completeness granted him the ultimate jurisdiction over the Hydro element, allowing him to fulfill the condition necessary to save the Fontainian people. He utilized this absolute authority to cleanse the "original sin" that tied the Fontainians to the Primordial Sea, transforming them into true, independent humans and permanently saving them from dissolution. His power transcended localized protection; it provided a permanent systemic fix, confirming his position as the supreme elemental and political authority in the nation.

B. Combat Mechanics and Hydro Mastery

In combat, Neuvillette operates as a 5-Star Hydro character specializing as an on-field Damage Per Second (DPS) unit. His kit revolves entirely around maximizing the destructive potential of his special Charged Attack, titled Equitable Judgment. This attack unleashes surging torrents of Hydro DMG in a continuous, straight-line AoE.

The mechanics of this power demonstrate the elemental cost of sovereignty. The Equitable Judgment continuously drains Neuvillette's HP when it is above 50\%. To mitigate this substantial self-damage and shorten the attack’s long initial charge time, he must absorb Sourcewater Droplets. These droplets are efficiently generated by both his Elemental Skill, O Tears, I Shall Repay (which also applies Pneuma-aligned Hydro energy), and his Elemental Burst, O Tides, I Have Returned. This reliance on self-generated resources allows him to maintain high on-field damage output and self-sustain, although he benefits greatly from interruption resistance due to the vulnerability during his Charged Attack.

C. The New Paradigm: Dragon-Granted Visions

A significant consequence of Neuvillette reclaiming full draconic authority is the ability to influence the distribution of elemental power, bypassing the authority of Celestia. He now possesses the power to grant Visions based on his own will and judgment, independent of the Archon-mediated, centralized system previously controlled by the Heavenly Principles.

The exemplar of this revolutionary change is Furina, who received a Hydro Vision following the conclusion of the Archon Quest. The lore suggests Neuvillette’s role in this was passive yet deliberate: he acknowledged her immense human will and set aside portions of his elemental power—likened to the ancient "dragon-treasure hoards"—for her to claim. Furthermore, Furina’s Vision is physically distinct, featuring a special design element (notably a symbolic tooth or fang). This symbolic alteration serves as confirmation that the power originates from the Hydro Dragon Sovereign, rather than the Archons or Celestia, establishing a competing, legitimate system of elemental power distribution under draconic sovereignty. This act of independent Vision granting is perceived as a definitive move that actively erodes Celestia's monopoly and sets the foundational stage for his proclaimed judgment against the Usurper King.

Table 2 details the evolution of Neuvillette's authority:

Table 2: Evolution of Neuvillette's Authority (Pre- and Post-Acquisition)

| Metric | Iudex Neuvillette (Incomplete Authority) | Hydro Sovereign Neuvillette (Full Authority) |

|---|---|---|

| Authority Status | Successor; Partial Elemental Authority (Stolen Power in Gnosis) | Complete Draconic Authority (Full Dragonhood) |

| Major Limitation | Inability to permanently contain or seal Primordial Seawater; constrained by the prophecy | No known limitations regarding Hydro; able to absolve "original sin" of Fontainians |

| Vision Granting | Unable to grant Visions or influence Celestia’s system | Capable of granting Visions independent of Celestia’s mandate (e.g., Furina) |

| Macro-Narrative Role | Administrator, maintaining order under the Archon (Focalors’ proxy) | Supreme Judge, poised to judge the Usurper King in the heavens |

V. Interpersonal and Political Relationships

A. The Archon and the Dragon: Focalors and Furina

Neuvillette’s most consequential relationships are intertwined with the former Hydro Archon, Focalors, and her human vessel, Furina. Focalors was the mastermind behind the long con—a plan designed to safely return the Elemental Authority to Neuvillette. Neuvillette, though initially unaware of the full scope, was a key component. After her sacrifice, he expressed profound solemnity and guilt, recognizing her act as the ultimate price paid for justice and the salvation of her people.

His relationship with Furina, the human embodiment of the former Archon, is complex. Having served as her Chief Justice for centuries, their dynamic became familial, often described as a serious older brother overseeing a quirky younger sister. Neuvillette’s emotional burden stems from his realization of the immense suffering she endured while maintaining her façade for 500 years. He now feels immense responsibility and regret for her suffering, and his subsequent decision to grant her the Hydro Vision was an act of personal recognition and protection, cementing his protective stance toward her post-Archon Quest.

B. Key Fontainian Figures and Professional Dynamics

Within the Court of Fontaine, Neuvillette maintains relationships characterized by professional trust and, in some cases, deep personal understanding.

Wriothesley

The relationship between Neuvillette and Wriothesley, the Duke of the Fortress of Meropide, is built on mutual respect. Neuvillette holds deep confidence in him, noting that he earned his title and reputation. Dialogue suggests a friendly, intimate bond that transcends mere professional courtesy, with Neuvillette dropping formality when they are alone. This closeness stems from Neuvillette’s judicial responsibility for Wriothesley’s life trajectory, establishing a relationship akin to a distant mentor or benefactor.

Clorinde

As Fontaine’s Champion Duelist, Clorinde is a key executor of the law. Neuvillette expresses respect for her capabilities and judicial function, finding her performances "fascinating". He trusts her judgment and impartiality in carrying out the rigorous requirements of Fontainian law.

Navia

The relationship with Navia, President of the Spina di Rosula, is permanently strained by the judicial failure surrounding the death of her father, Callas. Neuvillette feels overwhelming guilt, recognizing the injustice that occurred under his jurisdiction. He maintains a deliberate emotional distance because he understands that rectifying such a grave emotional wound is nearly impossible, noting that the resultant pain "does not settle quickly".

The Traveler

The Traveler occupies a unique position as Neuvillette’s primary confidant and witness. He chose to reveal the highly classified truth of his identity and the mechanism of Archon power theft to the Traveler. They are the only external party who understands the complete fulfillment of Focalors’ prophecy and the scale of the burden he now carries.

C. The Vow of Judgment Against The Seven

With the restoration of his full draconic authority, Neuvillette’s political mandate shifts from administering Fontaine to executing universal justice. His final destiny is to judge the Usurper King in the heavens. To achieve this, he vows to conduct a parade of judgments against all remaining Archons, whom he views as holders of the stolen Elemental Authorities.

This coming trial is not merely a martial conflict but a judicial assessment informed by his 500 years as Iudex. His approach incorporates a nuanced judicial philosophy that prioritizes ethical governance and motive over sheer possession of stolen power.

Neuvillette expresses the need to try Zhongli, the "god of precious gold," and Raiden Shogun, designated an Usurper who won the power of thunder. However, he pragmatically delays the Raiden Shogun’s trial for "a few centuries" due to her isolation. Concerning Venti, the God of Breeze and Hope, Neuvillette requires him for trial but appears to reconsider slightly upon hearing that Venti is generally a "harmless drunkard," suggesting that his judgment incorporates the current perceived danger and utility of the Archon. Most notably, he commends Nahida, the God of Verdure, for her sense of responsibility and benevolence, even while confirming she is still destined for trial.

This high degree of judicial nuance demonstrates that the restored draconic order intends to govern based on the spirit of the law, prioritizing ethical stewardship and responsibility, distinguishing the Sovereign’s rule from the previous, potentially ruthless, application of force by the original Usurper King. The profound sense of guilt Neuvillette holds—from Focalors' sacrifice to Navia's father—functions as a deep emotional catalyst, compelling him to use his absolute authority to ensure that the catastrophic cycle of cosmic injustice is finally broken by targeting the ultimate culprit, Celestia.

Table 3: Key Relationships and Observed Dynamic

| Character | Nature of Relationship | Neuvillette's Stance/Emotion | Implication/Significance |

|---|---|---|---|

| Focalors (Divine) | Architect/Co-conspirator | Guilt, solemn respect for her ultimate sacrifice | Her act restored his full authority and established his cosmic mandate. |

| Furina (Human) | Protector/Surrogate Sibling | Deep regret, responsibility, distant affection | Ward of the Sovereign; first confirmed recipient of a Dragon-granted Vision. |

| Melusines | Parental/Guardian | Deep love, viewing them as dependents and the "pride of Fontaine" | Fulfilling the ancient draconic mandate to nurture native elemental life. |

| Wriothesley | Trusted Professional/Friend | High respect, confidence, personal intimacy in private | Closest known confidant; trust built upon professional competence and shared history. |

| Navia | Judicial Distance/Guilt | Profound regret over the past, finds rectification difficult | Represents the Iudex's failure to achieve perfect justice, triggering his emotional response (rain). |

Table 4: The Macro-Political Vow of Judgment

| Archon/Entity | Neuvillette’s Stance/Assessment | Status of Trial | Underlying Principle of Judgment |

|---|---|---|---|

| Venti (Anemo) | Recipient of stolen power; possibly "harmless drunkard" | Scheduled, but may involve leniency/delay based on perceived threat/conduct. | Judging based on the current danger and responsible use of power. |

| Zhongli (Geo) | Recipient of the power of the rock | Scheduled | Judging the fundamental theft of original draconic authority. |

| Raiden Shogun (Electro) | Designated Usurper | Postponed ("a few centuries") due to isolation | Pragmatic approach; focusing on actively ruling Archons or direct threats. |

| Nahida (Dendro) | Commended for benevolence and sense of responsibility | Scheduled, but acknowledged positively | Judicial consideration of motive, ethical intent, and responsible governance. |

| The Usurper King (Celestia) | Final destiny to judge | Future/Ultimate Goal | The ultimate restoration of Teyvat's original, pre-Usurpation order. |

VI. Conclusions and Future Implications

Neuvillette has successfully transcended his human position as Iudex to fully inhabit his true identity as the Hydro Dragon Sovereign. This achievement, facilitated by the elaborate strategy and sacrifice of Focalors, not only saved Fontaine from destruction but fundamentally altered the political and metaphysical structure of Teyvat. He is the first of the Seven Sovereigns to dismantle the Archon system in his nation and secure 100\% of his Elemental Authority.

The immediate consequence of his power is the ability to grant Visions autonomously, initiating a competitive elemental economy that challenges Celestia’s long-standing monopoly. This act is a definitive sign of his preparation for a larger confrontation. His complex relationship with human emotions and judicial guilt serves as a powerful motivator, fueling his determination to fulfill his grand vow of judgment against the other Archons and the supreme Usurper King.

The future trajectory of Neuvillette involves a gradual, but inevitable, confrontation with the remaining seats of authority in Teyvat. His unique judicial philosophy—one that balances the necessity of rectifying the historical theft with a nuanced consideration of the individual Archon's ethical conduct and sense of responsibility—suggests that the coming draconic restoration may not be characterized by widespread martial destruction, but rather by a systematic, judicial restructuring of Teyvat's world order. Neuvillette stands as the foremost figure charting this post-Celestia destiny.