Male. Arcanist. Rank: Lieutenant General. A veteran commander of Zeno and a battle-hardened warrior with exceptional personal combat prowess. Though he presents a seasoned and charismatic front, he betrays the Foundation as soon as he appears. Having served in Zeno for a long time fighting the Reconstruction, he is one of the figures closest to the truth of the world before the Storm and the Pax House. He adopted the children of subordinates who vanished in the Storm, organizing them into a military unit under his command where they view each other as comrades and family. The soldiers' loyalty to Igor is absolute, but the Pax House's practice of forcing these subordinates into the Storm-ravaged front lines fueled resentment toward the Foundation. Eventually, he began to harbor doubts about the Foundation himself and chose a different path, leading the subordinates who followed him. He drove his adopted daughter and subordinate, Lopera, to despair by failing to explain the details of his betrayal, and he executed those under his command who did not agree with his defection. Originally a Cossack from the Don River, he possesses powerful arcanum that allows him to traverse the underworld through contact with a being known as Baba Yaga, despite being a mixed-blood Arcanist. He has a significant presence in the world, to the point that the Foundation maintains arcanum specifically to limit his abilities. While he maintains a meticulous attitude for the sake of his goals, he occasionally shows a human side, such as turning a blind eye to deserters under his command or encouraging his children.

Female. Rank: First Lieutenant. Arcanist. A First Lieutenant in Zeno originally from Kazakhstan. She is General Igor's adopted daughter and the eldest among those raised as Igor's aides after being adopted. As Igor's aide and adopted daughter, she grew up with Lopera under Igor's care, making them like sisters; Lopera follows her and freely calls her "Eonni." While she has an introverted, calm personality with a strong conscience and sense of responsibility, she occasionally displays contradictory behavior. Before being adopted by Igor, her dream was to become a scientist. She respects Igor's choice and stands by him.

Male. Rank: First Lieutenant. General Igor's Guard. He wears an eyepatch over one eye. Like Lopera and Moldir, he is an aide raised as a child by Igor after being adopted. He followed General Igor in betraying Zeno. While he shows a human side, he still fails to control his emotions, leading to blunders for which Igor reprimands him.

Female Arcanist. Rank: Second Lieutenant. Due to a natural hatred for betrayal, she cut ties with her biological father and ran away from home upon discovering his treacherous acts as a child. During this process, she met General Igor, became his adopted daughter, and joined Zeno. After joining, she served in the role of executing traitors, and over time, she came to accept General Igor as her foster father and her fellow subordinates as her new family. However, she was ultimately betrayed by that very father and her sworn siblings. It was revealed that Igor's betrayal had been meticulously prepared for a long time, and while all of Igor's adopted children, including Ptolemy and Moldir, were aware of it, only Lopera was kept in the dark. This resulted in a double betrayal of the thing she hates most. Consequently, in stark contrast to her usual bright personality, she suffers a mental breakdown, her eyes turning hollow as she repeatedly fires her gun at a wall without soul. Her nickname is Pera. Moldir usually calls her by this name.

Among the officers, there is a high proportion of Arcanists. The Air Force relies on flying witches like Lilia, and communications rely on communication Arcanists. Within Zeno, the number of people harboring dissatisfaction with the Foundation is increasing. Arcanists find it harder to adapt to vertical organizational life like the military compared to humans, and their risk of exposure to mental illness is several times higher. Because they try to organize a military with such Arcanists, it is said that an enormous number of personnel go insane during missions. Because the supply of personnel is not smooth, they are always suffering from a manpower shortage.

Since Arcanists are difficult to replace and naturally lack physical strength compared to humans, the first-line combat forces generally employ human soldiers and choose to reinforce their power using arcanum tools. Arcanist soldiers do exist, but they are mainly utilized as commanders, elite combatants, or technical staff. If even that is not feasible, they are assigned to unimportant positions like Andrea.

Female. Rank: First Lieutenant. She is very free-spirited and jovial for a woman, and shows similar traits in many areas, such as a personality that charges ahead regardless of the danger. Her way of speaking isn't exactly gentle, but she has a good heart, caring for and worrying about her comrades. She rebels against the betrayal of the Zeno forces.

Male. Rank: Major General. Commander of the Zeno Cavalry. He is from the same hometown as Igor and has experience serving under him previously. He traveled through Eastern European villages gathering volunteers and suppressing local bandits. Upon learning that the Manus Vindictae and Zeno traitors were behind the bandits, he fights to save his fellow countrymen.

Female. Rank: Colonel. She is the Chief of Staff of the Zeno Cavalry. She possesses a strong military spirit and respects her superiors.