ATBO – ‘AT’ the ‘B’eginning of ‘O’riginality (에이티비오)
- Debut (Y.M.D): 22.07.27
- Latest Album Released (Y.M.D): 23.11.27
- Label: IST Entertainment
- Music Videos: Monochrome (Color), Attitude, Next to Me, Must Have Love
- Discography: The Beginning: 開花 (Blooming), The Beginning: 始作 (Start), The Beginning: 飛上 (Flying), Must Have
- Fan Club: Boat
- Symbol:
OFFICIAL SITES:
MEMBERS:
- Name (Real Name): Oh Jun Seok (Oh Junseok)
- Hangul: 오준석
- Position: Leader, Rap, Dance
- Birthday (Y.M.D): 03.03.03
- Nationality: Korean
- Height: 174cm (5ft 9in)
- Blood Type: AB
- MBTI: ENTJ
- Sub-Unit: N/A
- Name (Real Name): Ryu Jun Min (Ryu Jun Min)
- Hangul: 류준민
- Position: Vocal
- Birthday (Y.M.D): 03.04.05
- Nationality: Korean
- Height: 172cm (5ft 8in)
- Blood Type: A
- MBTI: ESTJ
- Sub-Unit: N/A
- Name (Real Name): Bae Hyun Jun (Bae Hyun Jun)
- Hangul: 배현준
- Position: Rap
- Birthday (Y.M.D): 03.06.06
- Nationality: Korean
- Height: 180cm (5ft 11in)
- Blood Type: A
- MBTI: INTP
- Sub-Unit: N/A
- Name (Real Name): Jeong Seung Hwan (Jeong Seunghwan)
- Hangul: 정승환
- Position: Dance, Vocal
- Birthday (Y.M.D): 04.01.27
- Nationality: Korean
- Height: 177cm (5ft 10in)
- Blood Type: B
- MBTI: ENFP
- Sub-Unit: N/A
- Name (Real Name): Kim Yeon Kyu (Kim Yeonkyu)
- Hangul: 김연규
- Position: Vocal
- Birthday (Y.M.D): 04.05.03
- Nationality: Korean
- Height: 171cm (5ft 7in)
- Blood Type: O
- MBTI: ISFP
- Sub-Unit: N/A
- Name (Real Name): Won Bin (Won Bin)
- Hangul: 원빈
- Position: Rap, Vocal, Maknae
- Birthday (Y.M.D): 04.07.01
- Nationality: Korean
- Height: 183cm (6ft)
- Blood Type: A
- MBTI: ESFJ
- Sub-Unit: N/A
FORMER MEMBERS:
- Name (Real Name): Seok Rak Won (Seok Rakwon)
- Hangul: 석락원
- Position: Dance, Vocal, Rap
- Birthday (Y.M.D): 03.11.14
- Nationality: Korean
- Height: 172cm (5ft 8in)
- Blood Type: A
- MBTI: INFP
- Sub-Unit: N/A