ATBO

ATBO (Korean: 에이티비오; RR: Eitibio; an acronym for At The Beginning of Originality) is a South Korean boy group formed through IST Entertainment's survival competition The Origin – A, B, Or What? in 2022. The group consists of six members: Junseok, Junmin, Hyunjun, Seunghwan, Yeonkyu, and Won Bin. Originally a septet, Rakwon left the group on May 6, 2024, due to health issues. They debuted on July 27, 2022, with the extended play (EP) The Beginning: 開花.