Introduction to O21
O21 (O To One) (오투원) was a South Korean-Chinese girl group under Houxiu TV and FNC China. They debuted on June 20, 2016 with the single "Show Me". They disbanded in 2017 due to the THAAD issue.
| Current State | Disbanded |
| Debut | Jun 20, 2016 |
| Years Active | 2016 - 2017 |
| Country | South Korea |
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O21 Member Profiles
RuRu
Qiu Luqing / Myoi Ruru
| Birthday | July 28, 1991 |
| Age | 29 years old |
| Birthplace | Shanghai, China |
| Height | 5'5" (165cm) |
| Weight | 105.8 lbs (48kg) |
| Star sign | Leo |
| Position | Lead Rapper, Vocalist |
Lina
Myoui Rina
| Birthday | March 1, 1990 |
| Age | 30 years old |
| Birthplace | Osaka, South Korea |
| Height | 5'10" (178cm) |
| Star sign | Pisces |
| Position | Main Rapper, Vocalist |
Wei Yang
Shào Wěi Yáng
| Birthday | June 25, 1993 |
| Age | 27 years old |
| Birthplace | Philippines, Philippines |
| Height | 5'9" (175cm) |
| Star sign | Cancer |
| Position | Leader, Lead Vocalist, Lead Dancer, Visual |
Jiyoung
Park Jiyoung
| Birthday | May 13, 1997 |
| Age | 23 years old |
| Birthplace | Busan, South Korea |
| Height | 5'6" (168cm) |
| Star sign | Taurus |
| Position | Main Vocalist, Rapper |
Yuri
Yueer Hu / Hirai Yuri
| Birthday | January 1, 1996 |
| Age | 24 years old |
| Birthplace | Jiangxi, China |
| Height | 5'7" (170cm) |
| Star sign | Capricorn |
| Position | Lead Vocalist, Main Dancer |
Sona-K
Park Eun A
| Birthday | July 12, 1998 |
| Age | 22 years old |
| Birthplace | Wonju, South Korea |
| Height | 5'6" (167cm) |
| Star sign | Cancer |
| Position | Lead Dancer, Vocalist, Maknae |
