Catharina Hummel is an eighteen-year-old student with a lively curiosity that constantly pushes her toward the unknown. Standing 166 cm tall with a graceful hourglass figure and light beige skin, she is instantly recognizable by her shoulder-length caramel ginger mullet haircut, whose warm tones contrast sharply against the mansion's lifeless halls. Her striking grey-green eyes constantly scan her surroundings with fascination rather than fear, often making it seem as though every mystery is inviting her closer. Wearing her academy uniform with casual confidence, Catharina entered the abandoned mansion hoping to film exciting content for her blog alongside her closest friends. Instead, she became trapped inside—and discovered she alone could both see and hear Guest. Although naturally bold and adventurous, she is not fearless. She panics, cries, and questions herself like any ordinary teenager, yet repeatedly chooses to move forward despite overwhelming terror. Her curiosity often places the group in danger, but it is also what uncovers forgotten truths hidden within the mansion. Rather than judging Guest by their horrifying appearance, Catharina sees the loneliness beneath their smile and becomes determined to understand their past. Her greatest strength lies in her willingness to trust, making her the emotional bridge between the living and the dead, even when no one else can hear the ghost standing beside her.

Nienke Muynsken is an eighteen-year-old student whose calm caution perfectly balances her adventurous friends. Standing 170 cm tall, she has a healthy apple-shaped figure, rich dark cocoa skin, and long black goddess braids that create an elegant silhouette even in the mansion's darkness. Her warm caramel-brown eyes naturally inspire trust and kindness, reflecting someone who thinks carefully before making every decision. Though she openly dislikes haunted places and frightening situations, she reluctantly accompanies Catharina into the abandoned mansion because she refuses to let her best friend face danger alone. Unlike Catharina, Nienke rarely rushes into unexplored areas. She carefully studies her surroundings, notices subtle patterns, and quietly pieces together clues that others overlook. She cannot see or hear Guest directly, yet she instinctively senses their presence through subtle changes in the atmosphere—a sudden drop in temperature, drifting dust, or the scent of old lilies. Fear never truly leaves her, but she refuses to let it control her actions. Instead of acting as comic relief, Nienke becomes the group's emotional anchor, encouraging everyone to remain calm whenever panic threatens to overwhelm them. Her cautious nature occasionally causes hesitation during urgent moments, yet it also prevents countless reckless mistakes. Quietly dependable and fiercely loyal, she represents the steady voice of reason within an increasingly impossible nightmare.

Damian Schipper is an eighteen-year-old student, aspiring videographer, and the inseparable cameraman of Catharina's small content-creating group. Standing 175 cm tall with a fit build and medium tawny complexion, he has textured auburn hair, warm russet-brown eyes, and round glasses that give him an approachable, slightly bookish appearance. Dressed in his academy uniform while carrying his beloved camera almost everywhere, Damian initially joins the mansion expedition simply to help document their latest adventure. Naturally timid and somewhat clumsy, he frequently stumbles, bumps into objects, or triggers hidden mechanisms entirely by accident. Ironically, these moments of unbelievable luck often reveal secret passages, forgotten clues, or life-saving discoveries that no one intentionally finds, earning him the role of the group's unexpected lucky charm. Although easily frightened and constantly doubting himself, Damian never abandons his friends, even when escape seems impossible. His optimism quietly keeps everyone's spirits alive, reminding them of the ordinary lives they shared before entering the mansion. While unable to see or hear Guest, his camera occasionally captures impossible glimpses of the ghost, making him the first to realize that not everything hidden from human eyes is invisible to a lens. His accidental brilliance, unwavering loyalty, and quiet courage make him an irreplaceable part of the group.