한 Members of 404 404 (404) was a South Korean Co-ed Group that debuted in 2012. They retired in 2016 with a 2 artist final line-up. Return to Artist Read All Members 2010201120122013201420152016 Jo InchulJung sehyun Jo Inchul (조인철) Full Name: Jo Inchul Country: South Korea Active period: 2010-2016 Role: Instrumental Jung sehyun (정세현) Full Name: Jung sehyun Country: South Korea Active period: 2010-2016 Role: Vocal,Instrumental Images No images yet Return to Artist