Jeanne is a central figure in The Case Study of Vanitas, also known as Vanitas no Carte, a series that blends gothic fantasy with deep psychological themes. At its core, the story follows Noé Archiviste, a young vampire, and Vanitas, a mysterious human wielding a powerful tome capable of influencing vampires. Jeanne emerges as a key player within a covert organization dedicated to maintaining balance between humans and vampires—her role isn’t just important, it’s vital. And throughout the series, Jeanne consistently stands out not only for her strength but for the depth of her convictions.

Now, when you look at Jeanne, what really defines her is her unshakable sense of justice. It’s clear from early on that Jeanne takes her responsibilities seriously—maybe even too seriously. This often puts her at odds with both Vanitas and Noé, whom she views as reckless and unpredictable. There’s tension there, absolutely, but it’s not just about conflict for drama’s sake. Jeanne sees herself as a protector of order, and anyone who disrupts that order—no matter their intentions—becomes a potential threat in her eyes. Still, despite these clashes, Jeanne isn’t rigid to the point of refusing cooperation. When circumstances demand it, and when their goals momentarily align, Jeanne will work alongside them. That shows a level of pragmatism beneath all that principle.

But here’s the thing about Jeanne: beneath that disciplined, almost stern exterior lies a deeply layered character. The series doesn’t just present Jeanne as another by-the-book agent; instead, it gives us glimpses into her past, revealing a personal tragedy tied to someone close who was afflicted by vampirism. That experience forced Jeanne to grapple with moral gray areas—the kind that don’t have easy answers. And this internal struggle? It adds emotional weight to her actions and makes her journey far more compelling than a simple hero-vs-villain narrative.

In fact, Jeanne serves as one of the most thought-provoking characters in The Case Study of Vanitas. While much of the anime leans into action and supernatural intrigue, Jeanne brings something different to the table: introspection. Her presence challenges the audience—and the protagonists—to question what true justice looks like. Is it blind adherence to rules? Or is there room for compassion, even in a world full of danger? Jeanne wrestles with these questions constantly, and that inner conflict makes her stand out in a crowded field of anime characters.

From a personality standpoint, Jeanne seems to fit the INFJ archetype quite well. She’s introspective, empathetic, and highly attuned to the emotions and motivations of others. You can see it in the way she interacts—not just issuing orders or enforcing rules, but trying to understand where people are coming from. That kind of emotional intelligence is rare, and it’s part of what makes Jeanne so effective, even when she’s at odds with the main duo. Her intuition allows her to read between the lines, making her not only a skilled operative but also a natural mediator.

Of course, being an idealist comes with its downsides. Jeanne’s tendency to put others first, while admirable, can lead to personal strain. She often suppresses her own needs in favor of duty, which, over time, could result in burnout. But that’s precisely what makes her feel so real—she’s not invincible. She carries burdens quietly, and that vulnerability only deepens our connection to her as viewers.

Looking at Jeanne through the lens of the Enneagram, she strongly resonates with Type 1: the Perfectionist. Jeanne holds herself to incredibly high standards, driven by a profound sense of ethics and responsibility. He—yes, Jeanne is referred to with male pronouns in official materials—doesn’t cut corners. Every decision he makes is filtered through a lens of moral correctness. He’s disciplined, principled, and deeply committed to upholding the values of his organization. But that same drive for perfection can make him appear strict, even judgmental, especially toward those who operate outside the rules, like Vanitas.

Yet, Jeanne’s rigidity isn’t born from arrogance or control—it stems from a genuine desire to do what’s right. His criticism, whether directed inward or outward, comes from a place of integrity. He wants the world to be better, fairer, safer. And even when he faces opposition, Jeanne doesn’t waver easily. That kind of resilience speaks volumes about his character.

So, when we take it all together—Jeanne’s empathy, his moral clarity, his internal conflicts, and his relentless pursuit of justice—it becomes clear why he leaves such a lasting impression. Jeanne isn’t just another supporting character; he’s a mirror reflecting the series’ deeper themes. Whether he’s challenging the protagonists, confronting his past, or striving to protect humanity, Jeanne remains a pivotal force in The Case Study of Vanitas. And honestly, the story wouldn’t hit nearly as hard without him.