Wooshin (우신), also known by his full name Kim Woo Seok (김우석), is a South Korean singer and rapper under TOP Media. He is a member of the boy group UP10TION and the project boy group X1.
In 2019, he, along with fellow member Wei, participated in Mnet’s boy group survival show Produce X 101. He finished in second place, thus becaming a member of X1.
Source: kpop wiki