He is the fifth born son of the Matsuno family, characterized by his kind and energetic but rather gullible nature. In Osomatsu-san, these traits have mostly stayed the same aside from an increase in energy and a focus on athletics, particularly baseball.
Though indistinguishable from his brothers in Osomatsu-kun, he is noted by his open-mouthed smile and crossed eyes in Osomatsu-san. He is often associated with the color yellow.
