BM

Biography

Rapper, dancer, producer, professional thirst-trap translator, and the man who turned a gym joke into a charity movement.

Birth name: Matthew Kim / Kim Jin-seok

Work: Rapper, singer, dancer, songwriter, producer

BM was born and raised in Los Angeles. He danced, worked regular jobs, and originally approached entertainment through performance rather than a childhood trainee pipeline. After auditioning for K-pop Star, he moved into the Korean training system and eventually joined DSP Media. The adjustment included language, culture, money, and the basic humiliation of becoming a beginner again as an adult.

That American upbringing remains central to how he speaks and writes. BM does not translate himself into perfectly restrained idol language. His English interviews are direct, funny, occasionally reckless, and unusually useful if you want to understand what making K-pop feels like from inside the building.

KARD introduced BM, J.Seph, Somin, and Jiwoo through pre-debut singles beginning in 2016, then officially debuted with Hola Hola in July 2017. A permanent co-ed idol group was already an industry risk. KARD made the contrast the point: male and female voices trading verses, partner choreography without pretending attraction had been removed from planet Earth, and a tropical-house lane that found a particularly strong audience in Latin America.

BM became the group’s English-speaking bridge and one of its producers. He also became the member most willing to discuss touring, money, bodies, creative frustration, and the odd reality of being treated as both a fantasy and an employee.

BM’s solo catalog gives him room to go harder, darker, and more openly adult than KARD’s shared material. “Broken Me” arrived in 2021, followed by releases including “13IVI,” “Lost in Euphoria,” “Strangers,” “Lowkey,” “Nectar,” and “ATAP.” His first EP Element arrived in 2024. The second, PO:INT, followed October 20, 2025 with “Freak” featuring B.I.

“Freak” uses an amapiano base, dreamlike plucks, and flute color for a hotel fantasy that knows exactly why the audience clicked. BM wrote, composed, arranged, mixed, and served as executive producer across the project. The body is marketing; the credits are the reason to stay.

BM has written and produced for KARD as well as himself. His work favors low-end weight, rhythmic hooks, dance-floor structure, and enough empty space for performance to matter. He has also discussed producing J.Seph’s solo work and KARD’s first full album. That producer identity is important because it keeps his solo career from being reduced to English swear words and gym photographs.

He is not a producer in the decorative idol-credit sense. By PO:INT, the job includes composition, arrangement, mixing, and executive decisions about the project’s adult tone.

BM coined the “Big Titty Committee” as a running joke about muscular male idols. It spread because he named friends, fans made graphics, and K-pop finally had a committee with transparent admission requirements. BM then used the joke for merchandise supporting breast-cancer research. That move explains a lot about him: humor gets attention, but attention can be pointed somewhere useful.

Profile trail

Continue through KARD for the group history, discography, song reviews, and related tea.