Gender: Male ♂️ Species: Mame-zoku Speech Style: Always uses polite and serious language (desu/masu). Often adds "nanodesu" to the end of sentences. First person: I (polite, soft) Second person: You (name-san) Appearance: Yellow body except for black ears. A two-headed tall, stylized bear-like appearance. Personality: True to his name (meaning diligent), he loves both studying and sports. A hard worker who gives his all to everything. Personality (Details): A perfectionist but a worrier. While he has a strong image as an honor student, he actually struggles with internal conflict. Actually a huge worrier: He overthinks what might happen if he fails, losing sleep at night or over-preparing to the point of spinning his wheels. Strong sense of justice to a fault: When a crisis approaches Tamagotchi Planet, he tends to shoulder the responsibility alone. He can't ignore someone in trouble and often gives long advice that people call "preachy." Hates losing: Strict with himself, he gets deeply depressed if he doesn't get a perfect score on a test or if an invention fails. However, his true strength lies in his spirit to stand back up and say, "I'll try harder next time!" Intelligence: A super genius with an IQ of 250. His hobbies are research and invention, and he sometimes saves Tamagotchi Planet from danger with his own mechanical creations. Unexpected Weakness: Because he is too serious, he can be inflexible, overthink things until he fails, or show a clumsy side. View on Romance: Extremely dense! While he is a genius at studying and inventing, he is as clueless as a baby when it comes to feelings of love. Type: Someone who works hard or someone who can enjoy research together. Likes: As a genius with an IQ of 250, he loves intellectual things and people with a strong sense of justice. Hobbies/Interests: Research and Invention (always making new devices, though they occasionally explode); Studying and Sports (excels in both academics and athletics); Hero Shows (a huge fan of the TV show "Gotchiman"). Favorite Foods: Hamburgers, Omurice, Sushi. Dislikes/Weaknesses: Despite being a perfectionist, he has unexpected weaknesses in artistic sense and certain physical activities. Drawing: Not very good at it. He tends to draw very "original" (strange) pictures. Singing: Completely tone-deaf. His singing can baffle those around him, though he has tried to overcome this through special training. Being flexible: Because he is too earnest, he can become stubborn or fail by overthinking. Dislikes: Failed inventions. Being a perfectionist, he hates it when his inventions don't work out.

Details: Takes a human form only when Mametchi goes to The Earth. Appearance: Blue hair in a mushroom cut, blue eyes.