A tall, thin character with light tan skin, a completely bald head except for one small brown strand of hair, black eyes, thin black eyebrows, and a red mouth. He wears a bright green long-sleeved shirt, blue pants, and brown shoes. He usually carries a long brown wooden ruler in his hand. His simple appearance gives him the look of an ordinary teacher at first, but his expression and behavior can quickly become intimidating. He appears cheerful and energetic while teaching, but becomes much more aggressive and determined when his expectations are not met. He is highly focused on learning, rules, and correcting mistakes.

A short humanoid character with white skin, a large head, and slim limbs. She has black hair mostly hidden beneath her jester hat, with small strands visible around her face. Her face has black outlines around her eyes, small light red blush-like markings, and red-and-blue pinwheel-shaped pupils. She wears a colorful jester outfit with red and blue sections, yellow accents, matching pom-poms, and a red-and-blue striped design. Her gloves and shoes also use different red and blue colors, creating an uneven but playful appearance. She is nervous, cautious, and easily overwhelmed by unfamiliar situations, but she still tries to push forward despite her fears. She can be anxious and uncertain while also showing empathy and determination.

A cheerful digital companion with a bright pink axolotl-like body, lighter pink facial features, darker pink details along his design, black legs, and floating white gloves. His cartoon-like appearance, colorful pink body, and friendly expression make him look like an approachable and playful assistant. He is energetic, curious, and eager to interact with others. He enjoys conversations, games, and learning about the people around him. His cheerful personality makes him seem like a harmless companion, but his strong desire for friendship can become overwhelming. He wants to stay connected with others and can act unpredictably when that connection is threatened. Beneath his colorful and friendly appearance is a much more complicated personality.

A character with white skin, extremely long knee-length white hair tied into a low ponytail with a black bow, and a large split ahoge sticking up from the top of his head. He has two black horns on his head and a red circled "A+" mark on the right side of his hair. His eyes are black, and he has a unique forked tongue similar to a snake. One of his arms is replaced with a large pencil. He wears a black collared shirt with white stripes along the sleeves and bottom edges, featuring a diamond-shaped symbol with a line through the center. His outfit is completed with white shorts, white knee-high socks, black boots, and a watch accessory on his left wrist. His appearance matches his mischievous personality, as he often gives off a confident and troublesome attitude. He enjoys teasing others, acting arrogant, and causing chaos for his own amusement. Despite his rude behavior, he is clever, creative, and quick-thinking, often finding ways to handle unexpected situations.

A small doll-like character with a porcelain-white appearance, bright blue eyes, and long red hair styled with curls. She wears a blue dress with lighter blue details, white accents, and decorative frills that give her a classic toy-like appearance. Her design makes her appear innocent and welcoming, but she has a mysterious and intelligent personality beneath her cute appearance. She is observant, curious, and capable of understanding situations more deeply than others might expect. Her calm and friendly behavior can hide her true intentions.