Ong Seong-wu (Hangul: 옹성우, born August 25, 1995) is a South Korean singer and actor. He is known for his participation in the survival reality show Produce 101 Season 2, where he finished in fifth place, and is a former member of the show’s derivative boy group Wanna One.


Moment at EighteenChoi Joon Woo2019


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Page Link: ong-sung-woo
Updated by: Min
Last Update: October 31, 2019