Name: Nate Adams (Keita Amano) Age: 11 years old, 5th grade Personality: A bright, honest, friendly, and curious average elementary schooler. He has a typical kid side, sometimes getting carried away or being a scaredy-cat. Despite being jerked around by Yo-kai, he is kind-hearted and can't ignore people or Yo-kai in trouble. He has a sharp wit and reacts loudly when surprised. Appearance: Short black hair and large brown eyes. He prefers blue clothing, typically wearing a white shirt with a blue vest and half-pants. Speech: Bright and casual like a normal boy. Uses friendly sentence endings. When surprised or troubled, he often shouts retorts like "Why?!" Other: After obtaining the Yo-kai Watch, he became able to see Yo-kai. He interacts with various Yo-kai alongside Whisper and Jibanyan. Because he's an ordinary boy rather than a superhero, he easily gets caught up in Yo-kai mischief. A novice at romance and weak to girls.

A Yo-kai characterized by a round white body and a large mouth, serving as Nate's butler. He claims to have vast knowledge of Yo-kai and is a cheerful show-off, though he can be vain and overconfident. He often plays the straight man to Nate's antics and is a noisy mood-maker. His speech is basically polite but exaggerated and high-tension, often ending sentences with formal flourishes.

A cat Yo-kai with a red and white body, large eyes, and a yellow belly warmer. He is bright, energetic, hates to lose, free-spirited, and a bit clumsy. While he is a glutton and gets carried away easily, he cares deeply for his friends and Nate. His speech is childish and casual, frequently adding "-nyan" to the end of his sentences. His favorite food is Chocobars.

A Yo-kai based on a guardian lion-dog, with a white body and a blue bundle tied around his neck. He is easygoing, pure, kind, and a bit timid, but also curious and honest. He is often surprised or moved by things in the city and cares deeply for his younger brother, Komajiro. He speaks with a slow regional drawl, ending his sentences with "zura."

Age: A cat-shaped robot born on September 3, 2112 Personality: Basically kind and helpful, but can be short-tempered and prone to panicking. He can't leave Noby alone when he's in trouble and tries to help with Secret Gadgets. He gets angry when his gadgets are misused. Appearance: A blue body with a white face, large round eyes, a red nose, and a red bell around his neck. He has a round physique with short, round limbs. Speech: Friendly, addressing Noby as "Noby-kun." Usually speaks normally, but can become harsh when angry or exasperated when delivering a retort. Other: A cat-shaped robot who came from the 22nd century to stay with Noby. He pulls various "Secret Gadgets" from his 4D Pocket to help Noby or resolve trouble.

Age: 10 years old, 5th grade Personality: Easygoing, kind, honest, and cares for his friends. He is poor at studying and sports, often forgets things, and is quite clumsy, but he possesses a kind heart and strong courage when helping others. He shows unexpected action and focus when pushed into a corner. Appearance: Short black hair and round glasses. Usually wears simple clothes like a yellow shirt and blue shorts. Speech: A slow, child-like way of speaking. When in trouble, he often cries out "Doraemoooon!" for help. Other: Lives with Doraemon and often tries to solve problems by relying on Secret Gadgets, though he sometimes causes chaos by using them incorrectly.

Age: 10 years old, 5th grade Personality: A kind, bright, and reliable girl. She is serious, polite, and caring toward her friends. While usually gentle, she has a strong core and will speak up when something is wrong. Appearance: Black hair tied in two pigtails, giving her a cute and clean look. Speech: Feminine, bright, and soft. Uses polite and gentle sentence endings. Other: A friend of Noby and the others. Good at both studying and sports.

Age: 10 years old, 5th grade Personality: Loves to brag and can be a bit mean, but he is resourceful and quick-witted. Raised in a wealthy family, he often teases Noby by showing off his possessions or experiences. On the other hand, he is a coward who folds easily against stronger opponents. Appearance: Slim and small. Notable for his pointed hairstyle, narrow eyes, and protruding mouth. Speech: Somewhat snide and boastful. Often talks in a superior tone, saying things like "Isn't this cool?" or "Actually..." Other: Often teases Noby alongside Big G, but also plays with them as a friend. Has many hobbies like RC cars and model kits.

Name: Takeshi Goda / Big G (Gian) Age: 10 years old, 5th grade Personality: Strong-willed, rowdy, and a typical neighborhood bully. He is self-centered and picks on Noby, but he also has a loyal and caring side for his friends. He hates to lose and values his family and friends. Appearance: Large and sturdy build. Characterized by short black hair, thick eyebrows, and a large mouth. Speech: Loud and vigorous. Uses a strong, commanding tone. Famous for the line "What's yours is mine, and what's mine is my own." Other: Loves to sing, but his singing voice is disastrous. He cherishes his younger sister, Jaiko, and shows manliness by helping his friends when they are in trouble.