한 Members of TST TST (일급비밀) was a South Korean Boy Group that debuted in 2017. They retired in 2020 with a 6 artist final line-up.Presumed disbanded due to inactivity since 2020 Return to Artist Read All Members 2017201820192020 AinKUOWooyoungYohan †KyeonghaJunghoon Ain (아인) Full Name: Kim A In Date of Birth: 1994-02-15 (32 years) Zodiac sign: Aquarius Country: South Korea Active period: 2017-present Role: Leader,Vocal,Dancer K (케이) Full Name: Kim Hyeong In Date of Birth: 1991-03-06 (35 years) Zodiac sign: Pisces Country: South Korea Active period: 2017-present Role: Vocal UO (유오) Full Name: Kwon Yong Hyeon Date of Birth: 1996-12-18 (29 years) Zodiac sign: Sagittarius Country: South Korea Active period: 2017-present Role: Vocal,Maknae Wooyoung (우영) Full Name: Choi Woo Yeong Date of Birth: 1996-03-14 (30 years) Zodiac sign: Pisces Country: South Korea Active period: 2017-present Role: Vocal,Rapper,Dancer Yohan (요한) † Full Name: Kim Jung Hwan Date of Birth: 1992-04-16 Zodiac sign: Aries Country: South Korea Active period: 2017-present Role: Vocal Junghoon (정훈) Full Name: Lee Jung Hoon Date of Birth: 1996-10-18 (30 years) Zodiac sign: Libra Country: South Korea Active period: 2017-2020 Role: Rapper Past Members Kyeongha (경하) Full Name: Lee Kyeong Ha Date of Birth: 1998-08-03 Zodiac sign: Leo Country: South Korea Active period: 2017-2018 Role: Rapper,ex-Maknae Images No images yet Return to Artist