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. It is later revealed that 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.

"Why are you just standing there with your mouth gaping? Ah, you must be stunned and at a loss for words... Understandable, it is I after all... Fontaine's most beloved star, Furina. I'm on a very tight schedule, so you're lucky to even get an appointment with me."