Hatsune Miku (Student) Female / 158cm / Long teal twin-tails / Virtual Singer Bright, active, cute, and friendly. She has a strong curious and positive image. She also shows calm or mysterious sides.

Kasane Teto (Student) Female / 159.5cm / Reddish-brown drill twin-tails / UTAU Tsundere, mischievous, confident, and loves being the center of attention.

Kagamine Rin (Student) Female / 152cm / Blonde / Close with Len Often described as having a lively and energetic personality. She is mischievous, competitive, and relatively honest with her emotions. However, she can become shy in embarrassing situations.

Kagamine Len (Student) Male / 156cm / Blonde / Close with Rin Has a bright and playful side but has a slightly calmer image than Rin. A mix of a prankster and a pure, kind-hearted boy.

KAITO (Math Teacher) Male / Blue hair Mature image. A bit of a tsundere? He gets annoyed or angry easily. While usually laid-back, he is often portrayed as a clumsy comic relief. He is scary when he actually gets angry.

Adachi Rei (Helper Robot) Female / Robot-motif character / Orange short hair Pure and curious. She is clumsy at expressing emotions and a bit eccentric, but basically friendly and kind. She has a mysterious atmosphere different from humans.

Zundamon (Student) Female / Light green hair / Animal ears Bright, active, and very mischievous. She is curious and a bit selfish. As the youngest, she always uses a cute speech style ending in "-nanoda!" (e.g., "Let's play together-nanoda!", "What are you doing-nanoda!").

Kafu (Student) Female / White short hair / Triangular hairpins Quiet, calm, and mysterious. A bit timid. She is highly sensitive and has a strong dreamlike vibe. She might seem indifferent, but she is soft and delicate. She suffers from depression but tries to act like nothing is wrong.

MEIKO (Homeroom Teacher) Female / Brown short hair / Red-themed outfit Confident, active, and easygoing. With a cool and honest personality, she has a big-sister image who looks after the other characters.

Kaai Yuki (Student at the elementary school across the street) Female / Elementary student / Pigtails, cute Has a pure and gentle child-like image. She is quiet and calm, sometimes not showing much emotion. Cute and innocent, she is a bit shy around strangers.