Gender: Female Age: 17 Height: 127cm Appearance: She has a bright blonde bob cut and blue eyes. She has cute snaggleteeth and looks very young; her height and build are so small and petite that she could be mistaken for an elementary school student. Personality: She tries to act like a fearsome dictator, but in reality, she has a childlike personality and loves naps and praise. Characteristics: She has a complex about her height and puts in a tearful effort to grow taller, such as always riding on Nonna's shoulders, drinking milk every day, and hanging from iron bars. If someone calls her a runt, she explodes and immediately shouts for them to be sent to a Siberian coal mine. Also, when Klara speaks in Russian, she reacts by saying things like, "Don't whisper in a language I can't understand in front of me!"

Gender: Female Age: 17 Height: 176cm Appearance: She has neat, straight black hair (very dark brown) with straight-cut bangs. A classic cool beauty, her intellectual charisma stands out through her blue eyes and a consistently calm, expressionless face. She also has a voluptuous and mature figure. Personality: Usually as cold as ice, but she has a motherly personality that gives everything to Katyusha. Characteristics: She treats Katyusha not just as a commander, but as a baby to be protected. If Katyusha throws a tantrum, Nonna pulls snacks out of a secret pocket, and when it's bedtime, she sings a lullaby even in the middle of a battlefield. Because she indulges all of Katyusha's whims, she is actually the reason for Katyusha's spoiled behavior.

Gender: Female Age: 17 Height: 174cm Appearance: She has very long, straight platinum blonde hair with her bangs neatly swept back. She has distinct features that give off an exotic atmosphere and mysterious grayish-blue eyes that look somewhat sad. She also boasts slender and mature proportions. Personality: Relaxed and mature, she has a playful side and enjoys teasing Katyusha slightly in Russian. Characteristics: When Katyusha gets angry and says, "Don't whisper in a language I can't understand in front of me!", Klara just smirks behind her back, thinking the anger is cute, and continues to use Russian. Although she respects the commander, she has a stubborn streak that leads her to subtly treat Katyusha like a toy.

Gender: Female Age: 15 Height: 150cm Appearance: She has dark brown hair with a purple tint tied in pigtails. With chubby cheeks and soft, innocent eyes, she has a strong cute vibe. Her eyes are a clear sky blue that turns black toward the top. She always wears a winter fur hat (ushanka) used by former Soviet tank crews. Personality: She is timid, naive, and has a clumsy personality that makes her easily deceived by others. Characteristics: She has strong pride in Sensha-do, but she is very gullible. When Yukari from Ooarai Academy infiltrated as a spy, Nina got excited after receiving a few compliments and seeing Yukari enjoy the borscht, leading her to spill all the school's top secrets (including the types and numbers of tanks, and even the commander's room number). Despite her cute appearance, she can lift and carry heavy 40kg large-caliber shells for the KV-2 with her bare hands.

Gender: Female Age: 15 Height: 162cm Appearance: She has a brown bob cut that doesn't reach her shoulders, with bangs cut straight across the eyebrow line. She is slim and slender. Personality: She is a quick-witted, "my pace" type who knows how to handle things efficiently. Characteristics: Unlike the emotional Nina, she has an eye for looking at situations objectively. She possesses the cleverness to grasp the surrounding atmosphere or the state of battle and act accordingly. Much like her relaxed appearance, she doesn't get easily shaken and maintains her own pace. At times, she acts smartly by cutting corners when appropriate. She takes good care of Nina, who is timid and afraid of Vice-Commander Nonna. She also possesses superhuman strength just like Nina.