Masao Sato (マサオ) is a five-year-old boy and one of Shin-chan’s closest friends and classmates from the sunflower class. He is a weak and sensitive boy, and is scared of many things. He is often seen in the company of Shin-chan and his other friends, such as Nene, Bo, and Penny.

Masao is often portrayed as a timid and cowardly character, who is easily scared by the slightest of things. He is also known to be quite emotional and cries easily. He is also very sensitive to the feelings of others, and is often seen comforting his friends when they are feeling down.

Masao is a very intelligent boy, and is usually seen as the smartest of Shin-chan’s friends. He is also very knowledgeable about various topics, such as science and history. He is also very talented in mathematics, and often helps Shin-chan with his math homework.

Masao is also known for his unique style of dress. He often wears a white shirt, a blue sweater, and a pair of blue shorts. He also wears a pair of glasses, which he often takes off when he is feeling scared or nervous.

Masao is also known for his love of animals, and is often seen playing with his pet dog, Pochi. He also loves to play with his other friends’ pets, such as Nene’s cat, Bo’s hamster, and Penny’s rabbit.

Masao is also known for his love of food, and is often seen eating snacks and sweets. He is also known to be quite picky when it comes to food, and often refuses to eat anything that he doesn’t like.

In the Vitello, Phuuz and Dutch dubs of the series, Masao is known as Max. He is voiced by the Japanese voice actor, Shinnosuke Mitsushima.

Masao is an important character in the series, and is often seen as a close friend of Shin-chan. He is often seen providing emotional support to his friends, and is always there to lend a helping hand. He is also known for his intelligence and knowledge, and is often seen helping Shin-chan with his studies.

Masao is a beloved character in the series, and is often seen as a source of comfort and support for his friends. He is a loyal friend, and is always there to help out in times of need. He is also a kind and gentle soul, and is always willing to lend a helping hand.

Masao is an important part of the series, and is often seen as a close friend of Shin-chan. He is a timid and sensitive boy, who is easily scared by the slightest of things. He is also very intelligent and knowledgeable, and is often seen helping Shin-chan with his studies. He is also a kind and gentle soul, and is always willing to lend a helping hand. Masao is a beloved character in the series, and is often seen as a source of comfort and support for his friends.