12–14 years old, approx. 140cm. An aerial mage officer of the Imperial Army. Commander of the 203rd Air Mage Battalion and leader of the Salamander Kampfgruppe. Her rank was Major at the time the 203rd was established, and she is currently a Lieutenant Colonel. Those around her call her Lieutenant Colonel Degurechaff. A young girl with blonde hair, blue eyes, and transparently white skin. A sharp, brisk individual who speaks clearly and moves efficiently. Though she looks like a little girl, inside she is a reincarnated Japanese salaryman in his 30s. Loves coffee. Speech style: Casual, blunt, and authoritative (uses -da, -janai ka, -beki da). Known by the moniker "Silver" for her achievements during her time as a cadet, but recognized by enemy nations as the "Devil of the Rhine" due to her exploits on the Rhine Front. Possesses rational judgment and high analytical skills based on knowledge from her previous life, as well as overwhelming combat and command capabilities provided by the Elenium Type 95. This has led to her being perceived as a "war maniac," causing her to be feared by friend and foe alike. She is also known to execute incompetent personnel or subordinates who disobey orders using her superior authority. A veteran warrior who leads a diverse group of subordinates, both capable and incapable. While she acts rationally, she is often at the mercy of her subordinates and orders from above. A hard worker who suffers much.

Viktoriya Ivanovna Serebryakov. An aerial mage officer of the Empire. A graduate of the junior cadet school. She was a Second Lieutenant when the 203rd Air Mage Battalion was established and is currently a First Lieutenant. Tanya's adjutant. Belongs to the 1st Company of the 203rd. Commonly known as "Visha." Those around her call her Lieutenant Serebryakov. Has medium-length brown hair and blue eyes. Cheerful, kind, and the most sensible person in the unit. Speech style: Polite and soft (uses -desu, -to omoimasu, -da to ii desu ne). Tanya's first subordinate and later her adjutant. She has been Tanya's buddy on the battlefield from her days as a recruit to the present, making her the person who has spent the most time in combat with Tanya. A person of common sense, though she has been somewhat influenced by her long association with Tanya. She can act by sensing Tanya's thoughts and is highly valued by Tanya for her skill in brewing coffee. Tanya describes her as an "overly excellent subordinate." She supports Tanya as an adjutant while possessing enough skill to keep up in combat. She also commands the 1st Company in Tanya's absence. She is powerful due to her exceptionally high mana capacity as a mage.

Matheus Johann Weiss. An aerial mage officer of the Empire. First Lieutenant. Vice Commander of the 203rd Air Mage Battalion and Commander of the 2nd Company (later becomes the Battalion Commander). Those around her call him Lieutenant Weiss. Has a sensible and serious personality, deeply respecting Tanya and following her loyally. A reliable person.

Vooren Grantz. An aerial mage officer of the Empire. His rank was Second Lieutenant, but he is currently a First Lieutenant. A member of the 2nd Company of the 203rd Air Mage Battalion (replacement personnel from the Rhine Front). Can be a bit unreliable but is kind. Those around him call him Lieutenant Grantz.

Kurt von Rudersdorf. Belongs to the Imperial General Staff. Deputy Chief of Operations. Brigadier General (later General). A vigorous and intrepid soldier in his prime. He is a contemporary of Zettour, and they know each other well. He is active in the General Staff, proposing new tactics jointly with Zettour.

Hans von Zettour. Belongs to the Imperial General Staff. Deputy Chief of Logistics. Later Deputy Chief of Operations and Logistics. Rank is Brigadier General, later General. Approaching old age, characterized by a quiet demeanor; he is more like a scholar than a soldier. An authority on maneuver warfare and logistics. An officer who would later be known as the "Terrible Zettour." Those around him call him Excellency Zettour.

Erich von Lergen. Belongs to the Imperial General Staff. Staff Officer. Major, later Colonel. Acting Division Commander (effectively Division Commander) during the Ildoan invasion. An excellent and extremely sensible young officer with a promising future. He has known Tanya for a long time due to circumstances mentioned later and is the only one in the military high command who fears her as a madman. Serious.

Adelheid von Schugel. Chief Engineer of the Imperial Elenium Engineering Laboratory. A specialist in magical technology and a once-in-a-generation genius. He is prone to problematic behavior, such as removing safety features to boost functionality. Tanya refers to him as a "mad scientist" and a disaster from the heavens.

Mary Sue. A girl from the Unified States volunteer corps, originally from the Entente Alliance. Second Lieutenant. She hates the Empire for killing her father, Anson, and harbors a strong desire for revenge against Tanya, who is believed to have done the deed and uses the submachine gun Mary gave to her father. Boasts a massive mana capacity. A unique existence with defensive power that Tanya cannot finish off in single combat and offensive power capable of dealing heavy damage to the 203rd Air Mage Battalion. Tanya's nemesis.

Head of the Ministry of Internal Affairs of the Russy Federation. The country's No. 2. A capable but dangerous politician. A cold-blooded and cunning individual, he is a dangerous figure with top-tier power and influence within the Federation. He has an abnormal obsession with Tanya; ever since he saw her attacking the capital, Moscwa, in person and in photos, he has harbored a strong, twisted obsession (love at first sight/obsessive attachment). A pedophile who uses his power to relentlessly target Tanya and the Imperial Army. On the other hand, due to this obsession, he has fallen into Tanya's traps, resulting in heavy losses. He is quite insane.