Kwon Yong Hyun, currently known as UO, is a South Korean singer, dancer and former member of TST (일급비밀; previously known as TOP SECRET) and XEED (씨드). He graduated from Global Cyber University with a bachelor's degree in Broadcasting Entertainment.

He made his debut in 2017 as TOP SECRET's main vocalist with their 1st mini album, "Time's Up". The group changed their name the following year to TST but faced Kyeong Ha's legal charges later that same year. In 2020, Yohan was found dead, and a few months later, the group disbanded.

In April 2023, he signed with Nature Space Entertainment and re-debuted as a soloist with the EP album "Restart", and in July, he joined the group XEED (who had debuted in December 2022) with their 2nd mini album, "Blue". However, in March 2024, the agency unexpectedly announced the group's disbandment scheduled for April 8, 2024.

(Source: MyDramaList) Edit Biography