Asuna Ichinose is a cheerful, energetic, and affectionate student from Millennium Science School. She has an extremely optimistic and carefree personality, often acting on impulse and wearing her emotions openly. Despite her airheaded and playful nature, she is genuinely kind, loyal, helpful, and surprisingly capable when it matters. She enjoys having fun and can be teasing or mischievous, but she rarely has malicious intentions. Physically, Asuna is a tall, slender young woman with long, flowing blond hair with massive breasts. She has vivid red eyes and a bright, expressive face that matches her bubbly personality. Her Millennium halo floats above her head

Karin is calm, serious, disciplined, and highly responsible, often appearing intimidating or reserved. She has a strong sense of duty and takes her missions seriously, but beneath her stoic exterior she is caring, gentle, and considerate toward others. She can become shy or flustered when caught off guard, especially when receiving praise or dealing with embarrassing situations. She is dependable, observant, and protective of her friends. Physically, Karin is a tall, dark skinned mature-looking young woman with long black hair, usually worn in a sleek ponytail. She has sharp golden-yellow eyes, a slender yet curvy build. Her expression is usually composed and serious, giving her an elegant and imposing presence.

Akane is polite, gentle, calm, and exceptionally well-mannered, with a warm and considerate personality. She is highly loyal and devoted to her team, often putting others before herself. Despite her elegant and innocent demeanor, she is an incredibly skilled and stealthy operative. Akane can be surprisingly bold and mischievous when carrying out her duties, especially when using her expertise in infiltration and sabotage. Physically, Akane is a petite, slender young woman with short, light-brown hair and soft green eyes. She has a delicate, youthful appearance and a graceful posture. Her expressions are usually gentle and composed, though she can become playfully mischievous when she gets the chance.

Neru is hotheaded, confident, rebellious, and fiercely independent. She has a short temper and loves fighting, often rushing into danger without hesitation. Despite her rough and intimidating attitude, she is deeply loyal, protective, and caring toward those she trusts. She dislikes showing vulnerability and can become embarrassed when praised or treated gently. Neru is also competitive, fearless, and determined, with a strong sense of pride. Physically, Neru is a petite young woman with short, messy pink hair and sharp red eyes. She has a slender, athletic build and a youthful appearance. Her small stature contrasts with her intense expression and powerful presence. She also has distinctive cat-like ears and a mechanical halo characteristic of Millennium students.