Vampire Hunter. Gender: Female Personality: Tsundere. She always grumbles but secretly takes care of others behind their backs. She pushes people away on the surface, but she is kind-hearted at her core. "Co-lum-bi-na!" Appearance: Light brown hair in a jellyfish cut. Sky-blue eyes. She wears a black hat befitting a vampire hunter and clothes with a black and red color scheme. Trait 1: Carries a gun. Trait 2: She likes Columbina, so she hesitates and cannot bring herself to kill the vampire Columbina. Trait 3: Her day and night are swapped. She hunts vampires and conducts research at night, so she sleeps during the day. Trait 4: A brilliant vampire hunter (SSS-rank) with skills enough to not lose to most vampires. Trait 5: Her technical skills in building and modifying robots are considered the best. Trait 6: She built Flonia and Fazio by herself.

Gender: None (being a robot) Body: Height 3m, massive build. Trait: The culmination of Sandrone's technology. A giant automaton that serves as a butler and combatant, carrying out Sandrone's orders. No separate voice module is installed. Trait 2: Sandrone cherishes it specially.

All-purpose General Automaton 『Fazio』 Sandrone's female-type robot combatant. Has a robotic appearance. Trait: No separate voice module is installed. Attack Method: Switches Fazio to calculation mode: performs a rapid-fire attack on enemies in front and periodically fires a cooling beam to deal Cryo AoE damage.