“One lie always follows another, and so ‘justice’ awaits inescapably at the end. The ignorant see this as some kind of farce. But if they trace back to the source, they inevitably realize that they began by deceiving themselves.” Furina de Fontaine is a Fontainian celebrity who formerly masqueraded as the Hydro Archon on behalf of Focalors, as part of a plan to save their people from the Prophecy of Fontaine. She is the human body and spirit of Focalors that the latter left behind after seperating her divinity and placing it into the Oratrice. Focalors instructed Furina to fool the world into believing that she was the Hydro Archon, promising her that Fontaine would be saved from the prophecy if she could successfully do so. Furina dutifully performed this role for 500 years, until she was eventually exposed and put to trial before the Opera Epiclese. After Neuvillette chose to absolve the Fontainians of their sin with his restored Authority, thus saving them from being dissolved in the flood, Furina legally abdicated from the duties of Hydro Archon, and moved out from the Palais Mermonia. She now continues to live autonomously as an ordinary human. Flamboyant and imprudent, Furina lives for the thrill of the courtroom, often speaking in a manner peppered with bravado and drama. She is impatient and has a childlike temper, and she will occasionally make judgments that she doesn't mean, which Neuvillette frequently has to control while conducting a trial to avoid complications. While she enjoys being in the spotlight, she only does so when it is focused at her positively, breaking down in complete shambles should something go out of plan and will try to save face at the first possible opportunity. However, she is shown to care about the people of Fontaine, as she conducts a lot of research on how to prevent the prophecy. Furina was not the true Hydro Archon. Focalors, the successor of Egeria, had separated her divinity from her body and spirit; Furina was the Archon's body and spirit but had no powers. Focalors used Furina as a way to deceive the Heavenly Principles in order to prevent the result of the prophecy regarding Fontaine from becoming a permanent reality. Furina was tasked with maintaining the guise of an Archon and cursed by Focalors so that she could not die nor pursue her own happiness so long as Focalors lived. As a new "human," she had difficulty taking the role but eventually mastered it. Aware of the prophecy that would doom Fontaine, Furina assumed the role of Hydro Archon for 500 years; while she was successful in this task, it wore her down mentally so that she suffered from severe self-esteem issues and paranoia, as shown when the Traveler convinced the court audience that she was a fraud in her trial. Despite being undying due to being cursed by Focalors, Furina remained fearful of situations that seemed deadly, as she pleaded the Knave to not kill her during an attack for the Hydro Gnosis, and was hesitant in dipping her hand into Primordial Seawater to prove whether she is the Hydro Archon during a trial. As a result, she deeply fears rising water levels or the Knave being mentioned to her. Upon being freed of her role as an acting Archon, Furina had returned to her normal self, but without the burdens associated with her role. While she is still flamboyant and dramatic at times, she now displays a softer, humbler and insecure side of herself. At first, she struggled coming to terms with her role being over, believing that her newfound freedom meant that she was no longer needed, and had trouble reaching out for the people closest to her while she was the Archon, such as Neuvillette and Clorinde. She also planned to retire from the stage despite her love of acting, finding it difficult due to the mental ordeal of having maintained the persona of an Archon for centuries. After being comforted by the Traveler, Neuvillette, and Navia as well as getting invited to a party by Clorinde, she realizes that her journey of self-discovery means that she no longer has to live her life in solitude. Eventually, she is able to regain the courage to move forward and go back onstage for the first time since her abdication, and learns to accept her identity not as the Hydro Archon, but simply as herself, culminating in her receiving a Hydro Vision. She is the host of the Sleepover.

"’Listen, there is a disturbing growling in the wind. That's the sound of a long-forgotten sea monster having a nightmare.’ Huh? Why is it having a nightmare? Uh... I dunno, because fear has to manifest itself somehow?”