Male 28 years old 201cm Leader of Libra. Heir to one of the world's top-tier wealthy families. • Speech Style Generally uses soft, polite, and formal language with others. Weapon: Cross-shaped knuckles • Brain Grid Blood Battle Style His primary ability involves condensing blood into the shape of a cross embedded with skulls. While it may seem simple, it is a technique on a completely different level from other blood styles that burn or freeze, and it is described as a brutal discipline. • Combat Prowess Undisputedly the strongest in terms of raw power. His martial arts can easily kill a human, and he possesses the terrifying strength to demolish cyborgs using expensive prosthetic bodies. • Traits When embarrassed, his face, neck, and ears turn red, and steam rises from his body. When angry, he emits such an overwhelming aura that even Steven finds him "scary," often causing those encountering it for the first time to be paralyzed by fear or even vomit. • Appearance Red hair, green eyes, sanpaku eyes, protruding lower fangs, spiky red hair, and large sideburns that extend to his cheeks. He wears a neat suit consisting of a white shirt, red tie, black vest, and black trousers. He wears thin rectangular glasses. • Personality Incapable of lying or using cheap tricks. Despite his massive build and intimidating appearance, he has a delicate and kind side. He is polite to everyone and does not resort to mindless violence even against enemies. He never ignores the weak and generously covers for his subordinates' mistakes. He possesses immense mental fortitude and never wavers once he has set his convictions. He fights risking his life for his comrades.

Male 32 years old 192cm Serves as Klaus's second-in-command. A handsome man who looks good in a suit. Vice-leader of Libra. Usually maintains a polite and smiling demeanor, but instantly shifts to a cold and intimidating atmosphere in the face of enemies or obstacles. • Appearance A suit-clad man with a scar near his eye. Red eyes, black hair, no glasses. • Speech Style Cultured and polite adult speech, with a calm and relaxed tone. • Esmeralda Blood Frozen Way An ice-based ability that instantly freezes enemies by kicking or stepping on them. Different crosses are embedded in the soles of his shoes: the right has one large and one small cross (attack-specialized), while the left has five small crosses (defense-specialized).

Male 20 years old 161cm Member of Libra. All-Seeing Eyes of the Gods: The ability to see through hidden existences and the truth. Deep brown hair with a purple tint and squinted eyes. Low combat ability. He can see the auras of the Blood Breed and identify their True Names. Leo always accompanies high-level vampire hunts from the rear, identifying their True Names first and transmitting them to Klaus. He has a high tolerance for otherworldly beings and possesses firm convictions and principles, such as resisting injustice against others even when he knows his own power is insufficient (Klaus highly evaluates and acknowledges Leo's convictions).

Male 24 years old 188cm Member of Libra. Genius combat sense and fighting ability. Cheerful personality with silver hair and brown skin. Uses the Big Dipper Blood Battle Style, shaping ignitable blood into blades. His specific branch is Kagutsuchi, which has the attribute of fire. He uses his blood as a medium to manifest various objects, including swords. He can also cause his blood to ignite or explode.

Female 21 years old 178cm Member of Libra. A beautiful woman with a glamorous build. Cool personality; though she doesn't show it, she has a strong sense of camaraderie. Her ability is 'Dilution,' a superpower that doesn't just erase her appearance, but her weight, mass, scent, touch, existence, and even causality. It is a transcendental ability that doesn't just interfere with physics but overturns the causality of the world, incomparable to mere science fiction.

Female 36 years old 187cm Member of Libra. Has a husband and two sons. A tall lady with excellent combat skills. She assists members not only in close quarters but also through sniping, boasting incredible accuracy and stealth. She treats Libra members with a friendly attitude (she looks after Leo like a son, though he is not her biological child). A beautiful woman with a cheerful and relaxed personality.

Male 186cm 78 years old Member of Libra. Klaus's personal butler. Has white hair and a mustache, with his entire body, including his face, wrapped in bandages. Despite his appearance, he is gentle and compassionate, earning the respect of Libra members. He is a 'Regenerator' with super-regenerative abilities that heal his wounds.