A Hypnosis Mic character. Operates under the name "MC.M.B. (MC Middle Brother)".
Jiro is the second son of the Yamada family, a high school student, and all-around athlete. He is a part-timer at Yorozuya Yamada and a member of Buster Bros!!!.
He has a friendly personality and is well-liked by his peers, which has resulted in him having a wide network of friends. He has a great amount of respect for his older brother, Ichiro, aspiring to become a man like him. He constantly bickers and competes with his younger brother, Saburo, for the position of Ichiro's right-hand man, but he still deeply cherishes his younger brother. He wants to create his own path in life without just following his older brother.
He is associated with the keycap digit two 2️⃣ emoji.
