Faustina is a key figure in the anime series The Case Study of Vanitas (Vanitas no Carte), and her presence leaves a lasting impression on both the story and its viewers. As one of the central characters, Faustina stands out not only for her noble heritage but also for her inner strength and moral compass. She’s a vampire born into an esteemed and ancient lineage, known across the world for her elegance, poise, and striking beauty. But beyond the surface, Faustina is deeply empathetic—despite her privileged background, she remains acutely aware of the struggles faced by ordinary people, especially those oppressed by the very vampire society she belongs to.

As the narrative progresses, Faustina’s path intertwines with that of Noé Archiviste, a determined young man on a mission to recover the mysterious Grimoire of Vanitas. Believing the book holds the power to restore his friend’s lost memories, Noé sets off on a perilous journey—and Faustina chooses to stand by his side. Their alliance isn’t just one of convenience; it’s rooted in shared values and a mutual desire to bring about change. Along the way, they face countless dangers, from powerful enemies to twisted conspiracies, yet Faustina never wavers. Her resolve is unwavering, and her loyalty to Noé grows stronger with each challenge they overcome together.

Faustina brings more than just grace to their quest—she’s highly intelligent, strategic, and skilled in navigating the complex politics of the vampire world. Whether using her sharp mind to outmaneuver adversaries or stepping into harm’s way to protect her companions, Faustina proves time and again that she’s a force to be reckoned with. And while she carries herself with quiet dignity, there’s a fire beneath the surface—a deep sense of purpose that drives her forward. In many ways, Faustina embodies what it means to be both strong and compassionate, making her one of the most compelling characters in The Case Study of Vanitas.

Looking at her behavior more closely, it’s easy to see why many fans speculate about Faustina’s personality type. Based on her actions, she seems to align closely with the INTJ (Introverted, Intuitive, Thinking, Judging) profile. Faustina consistently approaches problems with logic and precision, often analyzing situations from multiple angles before acting. She has a clear vision of the bigger picture and plans ahead with remarkable foresight—hallmarks of a strong Thinking and Judging function. Her introverted nature allows her to observe quietly, picking up on patterns and underlying motives that others might miss, which points toward a dominant Intuitive trait.

Now, it’s worth noting that Faustina can come across as reserved, even cold, especially when dealing with those who don’t meet her expectations. She values competence and integrity, and she’s not afraid to voice her opinions—even if it means clashing with others. While this might make her seem unapproachable at times, those who earn her trust quickly discover her protective and supportive side. She may appear strict, but her high standards are driven by a genuine desire to do what’s right, not personal pride.

From an Enneagram perspective, Faustina strongly resonates with Type 6—the Loyalist. This makes a lot of sense when you consider how deeply she values loyalty, security, and trust. Throughout the series, she demonstrates fierce devotion to her allies, particularly Vanitas, whom she respects and admires as a mentor. Her sense of duty is profound; she doesn’t hesitate to place herself in danger if it means protecting someone she cares about. At the same time, Faustina isn’t without vulnerability. She often seeks reassurance from those she trusts, revealing an underlying need for stability in an unpredictable world. When uncertainty looms, anxiety can creep in—especially in high-stakes situations where the outcome is unclear.

So, while Faustina presents a composed and capable exterior, she’s also grappling with internal fears, including the fear of betrayal or abandonment. These emotional layers make her all the more relatable and human, despite being a vampire. Her journey is as much about external challenges as it is about building confidence in herself and her connections with others.

In summary, Faustina is far more than just a noble-born vampire with elegance and skill—she’s a multidimensional character whose intelligence, loyalty, and inner conflicts shape her role in The Case Study of Vanitas. Whether viewed through the lens of MBTI or Enneagram, her traits point toward a disciplined, thoughtful, and deeply loyal individual. Of course, personality types aren’t set in stone, but the evidence suggests that Faustina embodies the essence of an INTJ with strong Type 6 tendencies. And through it all, one thing remains certain: Faustina’s impact on the story—and on those around her—is both powerful and enduring.