TV-Series
Description
Ichirō Yamada, known as MC.B.B, is the eldest son of the Yamada family and manager of Odd-Jobs Yamada, handling diverse tasks from construction and moving assistance to promotional video production. He began working multiple jobs at age 14, including debt collection. He leads the rap group Buster Bros!!! with his younger brothers, Jiro and Saburo.

Born July 26, he is 19 years old, stands approximately 185 cm (6'1"), and weighs around 68 kg (150 lbs). His features include chin-length shaggy black hair, heterochromia (scarlet red left eye, forest green right eye), and a mole beneath his left eye. His signature attire is a red and blue varsity jacket marked "01" and "BB," a white hoodie, dark blue jeans, black high-top sneakers with red stripes, red over-ear headphones, and rings on his middle fingers and thumbs. During his time in The Dirty Dawg, he sported shorter hair, red ear piercings, a crimson hoodie, and a bandana matching Kuko Harai's. His Hypnosis Mic is red with "BB"-adorned rings, paired with DJ turntable speakers.

His rap history includes membership in Naughty Busters, Mad Comic Dialogue, and The Dirty Dawg. After The Dirty Dawg disbanded, he focused on raising his brothers and rebuilding his community. A past as a delinquent made him widely recognized throughout Ikebukuro. He confronted his father, Rei, who planned a rebellion, helping restore order by reactivating Hypnosis Mics. This solidified his belief in using rap battles to positively influence society.

His personality blends responsibility and protectiveness toward his brothers with a strong sense of justice. Compassionate and unable to ignore those in need, he earns community admiration. He struggles with holding grudges, maintaining a one-sided feud with Samatoki Aohitsugi. Stress stems from his protective instincts, but he remains committed to improving his community and country. An avid otaku, he enjoys anime, light novels, video editing, and creating promotional content for local businesses. His rap ability, "Critical Blow," delivers attacks significantly stronger than normal.

His worldview centers on using words to break down barriers and create unity. Division rap battles convinced him of words' potential to foster a world "where everyone can laugh together." His signature quote, "You’ll never find a rainbow if you’re looking down," originates from Charlie Chaplin’s song "Swing Little Girl" in the film *The Circus*, reflecting his forward-looking attitude.

His name "Ichirō" (一郎) means "first son," fitting his role as the eldest Yamada brother, while "Yamada" (山田) translates to "mountain rice paddy."