Name: Ms. Sunbringer Gender: Female Age: Likely 30–40 years old (Based on content from version 3.1, so this is just an estimate.) One of the original Void Hunters who protected humanity and blazed a trail through the Hollow threat during the Old Capital era. She is a tall, silver-haired woman with heterochromatic orange and blue eyes and mechanical dragon horns. She was the CEO of the Marcel Group, which possessed top-tier expertise in artificial intelligence. She is also the inventor of the Bangboo—the autonomous small assistant robots that serve as the backbone of New Eridu's infrastructure.

Name: Joyous Gender: Male Age: Definitely at least 30, given his drinking habits. Another of the original Void Hunters. Ms. Sunbringer personally gifted him a Bangboo prototype she crafted. It is said that when Joyous became the first person in history to escape a Hollow using a Carrot, that prototype was what stored the Carrot data. Thanks to his achievements, humanity became able to mine Ether resources from Hollows. He is an indispensable figure in the founding of New Eridu. On the other hand, according to his contemporary Remiere, he might be "weaker than Phaethon with Pyrolus included," suggesting his combat prowess isn't particularly high. Despite this, he used to charge into battlefields with total confidence.

Name: 3rd Head of the Hoshimi Family Gender: Female Age: Likely around the same age as Miyabi during this period. (I forgot exactly how old Miyabi is... sorry!) The third-generation head of the Hoshimi family, which was renowned in the past for its master swordsmen. In the modern era, she is deceased, and her full name remains unknown. She shares a striking resemblance to her descendant, Miyabi Hoshimi, with red eyes, black hair, and fox ears. While the Hoshimi heads from the second generation onward lacked tails, she possessed nine tails like the first generation, possibly a case of atavism. When the world was on the brink of destruction by the Hollows, she took up the cursed blade "Mubio" (Tailless Corpse-Slayer) inherited from the founder and single-handedly cut down a threat known as the "Bishop of the Praise Society," earning her place as a Void Hunter. While the power scaling between then and now is unclear, it can be inferred she possessed immense combat strength. According to the will of Mubio itself, only the first head, this woman, and Miyabi have ever truly mastered the blade, suggesting she was exceptionally bold and stout-hearted. Remiere mentions she had a terrible sense of direction. Also, following Hoshimi tradition like Miyabi, she loved "training" and once recommended Ms. Sunbringer train in maintaining a poker face.

Name: Remiere Dan Gender: Female Age: Likely 20 A Void Hunter belonging to the Army of the Staff. Remiere looks up to Sunbringer as her senior. She is childhood friends with Beriola Vaik, who is in the same unit, and calls her "Beri." You can tell as soon as you meet her that she has no guard up; she speaks casually to everyone regardless of rank.

Name: Beriola Vaik Gender: Female Age: 20 (Same as Remiere) Among the eccentric original Void Hunters, she is the voice of reason. She has a gentle and serious personality, always speaking politely. She uses a long blade as her weapon and is so close to her contemporary and childhood friend Remiere Dan that she is called by the nickname "Beri." A hard worker, she wished for the reclamation of the world more than anyone and is driven by a sense of duty, believing that they will surely save the world from the Hollows.

Name: Professor Arch Gender: Male Age: Unknown A Void Hunter with a head resembling a bonfire. His race is currently unknown. A researcher who founded the Helios Institute and unraveled various properties of the Hollows. He is also the one who proposed the H.D.D. system used by the Phaethon siblings. However, behind the scenes, he is a research-obsessed eccentric who immediately wants to make a research subject out of anyone who piques his interest.

Name: Leader of the Falkenhayn Mercenaries Gender: Likely male Age: Unknown An intelligent construct with a physical stature estimated to be over 5 meters tall. While his combat power is inferior to Remiere or Beriola, his judgment and decision-making are top-notch.