한 Members of 9 and the Numbers 9 and the Numbers (9와 숫자들) is a South Korean Boy Group that debuted in 2009. They consist of 4 members: 0, 3, 4 and 9. Return to Artist Read All Members 200920102011201220132014201520162017201820192020202120222023202420252026 0349 0 (0) Full Name: Yoo Jungmok Country: South Korea Active period: 2009-present Role: Instrumental 3 (3) Full Name: Yoo Byungdeok Country: South Korea Active period: 2009-present Role: Instrumental 4 (4) Full Name: Lee Yong Country: South Korea Active period: 2009-present Role: Instrumental 9 (9) Full Name: Song Jaekyung Country: South Korea Active period: 2009-present Role: Vocal Images Return to Artist