Matthew Kim, better known by his stage name BM, is a Korean-American rapper based in South Korea. He is the lead rapper and main dancer of South Korean co-ed group KARD.

Prior to his debut, he was a trainee under DSP Media for about four years. The label had originally planned for BM and fellow KARD member, J.Seph, to debut as a hip-hop duo, but this was later changed. He also appeared in several of his labelmates’ music videos. In 2013, he made an appearance alongside J.Seph, in Rainbow’s music video for “Sunshine”. In 2015, he made an appearance in Goo Hara’s music video for “Choco Chip Cookies”.

In 2016, he began his activities with KARD. The group released three singles before officially making their debut in 2017 with the mini-album Hola Hola.

Aside from his activities with KARD, BM has released his own music as well. His most notable songs include his 2018 song “Better Myself” and 2020 song “BAD MANNERS” featuring Junhyuk and Khael of MIRAE. In 2021, BM made his proper solo debut with “Broken Me” and the single album, THE FIRST STATEMENT.

He has also collaborated with other artists, most notably in 2015 with Goo Hara on “La La La” and in 2020 with Jessi on “Put It On Ya”. BM also hosts a podcast alongside Ashley of LADIES’ CODE and Peniel of BTOB called Get Real.