YOOK SUNG JAE

Yook Sung-jae (Korean: 육성재; Hanja: 陸星材; born (1995-05-02)May 2, 1995), also known mononymously as Sungjae, is a South Korean singer, songwriter, actor, model, host and entertainer. He is a member of the boy group BtoB and its sub-group, BtoB Blue. Aside from his group's activities, Yook has acted in television dramas Reply 1994 (2013), Plus Nine Boys (2014), Who Are You: School 2015 (2015), The Village: Achiara's Secret (2015), Guardian: The Lonely and Great God (2016), Mystic Pop-up Bar (2020) and The Golden Spoon (2022). He has appeared in several reality shows, including: Hitmaker, We Got Married, and Master in the House.

Yook released his debut solo album, Yook O'Clock, on March 2, 2020.