|“|| We don’t stop playing because we grow old; we grow old because we stop playing.
Jiro Yamada, a.k.a. MC.M.B, is a high school student, a part-timer at the Odd-Jobs Yamada and a current member of Buster Bros!!!.
Second son of the Yamada household and Buster Bros!!!. A strong fighter. He idolizes Ichiro Yamada, who is beloved by everyone. He grew up watching his big brother's back, and thus became a delinquent like him.
Just like Ichiro, he hates bullies. Due to his big brother's influence, he is well-versed in anime and light novels.
Anyone who makes fun of his big brother will be crushed out (or will be devoured) and he always fights with Saburo Yamada.
Jiro has neck length black hair and selectional heterochromia; his left eye is green, whilst his right eye is yellow. He has a mole under his left eye, and under the left side of his mouth.
Jiro wears a black t-shirt with two zippers and a blue-and-white bomber jacket with ‘Buster Bros’ labels on the chest. He also wears ripped grey jeans and black sneakers with blue accents. He wears rings on his right index and ring fingers on both hands and on his left thumb. He also wears a red badge labeled “B” and a smaller blue badge labeled “M” on a blue-and-white plaid shirt tied around his waist, and a red-and-black snapback hat.
Jiro’s Hypnosis Mic is a standard blue-colored microphone with rings decorated by “MB”. His speakers take the form of a rock ensemble with flying V guitars, amplifiers, and cymbals with the Buster Bros!!! logo on a kick drum.
- Rally: Releases a strong attack by using a power from his teammates
The songs featuring Jiro are:
- IKEBUKURO WEST GAME PARK
- EZ DO RAP
- Good Morning, Ikebukuro
- Gimme The Mic
- Counterfeit Busters
- Division Rap Battle
- Division Battle Anthem
- Alternative Rap Battle
- Division Rap Battle+
- Division Battle Anthem+
- Survival of the Illest
- SUMMIT OF DIVISIONS
- Jiro means "two" (二) (ji) and "son" (郎) (rou).
- Yamada means "mountain, hill" (山) (yama) and "field, rice paddy" (田) (ta/da).
- Jiro's quote is attributed to an Irish author George Bernard Shaw.
- He is right-handed.
- He likes Ichiro, soccer, anime, manga, and light novels, while he dislikes studying, and horror films.
- Jiro's favorite food is curry, while his least favorite food is picked plums (umeboshi).
- The model of guitar in Jiro's speakers is a Flying V.