ArtistIWill Media
Yook Sung-jae
Yook Sung-jae (육성재; born May 2, 1995) is a South Korean singer and actor, and the maknae (youngest) of BTOB. Known simply as Sungjae, he is one of the most visible BTOB members outside the group -- a consistent drama lead who has built a major acting career parallel to his music work.
Born in Jeonju, North Jeolla Province, Sungjae debuted with BTOB under Cube Entertainment on March 21, 2012 at just 16 years old. His acting breakthrough came with MBC's Who Are You: School 2015, where he starred opposite Kim So-hyun and cemented his crossover appeal.
Subsequent drama roles include Goblin (2016) alongside Gong Yoo, The Haunted Palace, and All About Blue. He has also maintained a strong solo music career, releasing the 2021 mini-album 1st 1995 and working as a vocalist in sub-unit BTOB-BLUE.
After BTOB's departure from Cube Entertainment in November 2023, Sungjae signed with IWill Media for solo activities while continuing BTOB group promotions.
3 articles7 creditsKorean
Fans Also Ask
What is Yook Sung-jae most known for?
Yook Sung-jae is best known as the maknae (youngest member) of BTOB and for his drama roles in Goblin (2016) alongside Gong Yoo, where he played Yook Deok-hwa. He is one of the most visible BTOB members in acting, with credits spanning teen dramas, supernatural series, and romantic leads.
What dramas has Yook Sung-jae starred in?
Yook Sung-jae's major drama credits include Who Are You: School 2015 (MBC, 2015), Goblin (tvN, 2016), The Haunted Palace (2024), and All About Blue (2025). His Goblin role as the eccentric chaebol heir Yook Deok-hwa introduced him to a much wider audience beyond the BTOB fanbase.
What agency is Yook Sung-jae under?
For solo activities, Yook Sung-jae is signed with IWill Media following BTOB's departure from Cube Entertainment in November 2023. He continues BTOB group activities through the group's own management structure. IWill Media handles his individual drama and entertainment appearances.
What is BTOB-BLUE?
BTOB-BLUE is a vocal sub-unit of BTOB consisting of Yook Sung-jae, Eunkwang, and Changsub -- the three main vocalists of the group. The sub-unit debuted with the EP New Men in 2016 and focuses on melodic ballads distinct from BTOB's full-group releases.
When did Yook Sung-jae debut with BTOB?
Yook Sung-jae debuted with BTOB on March 21, 2012, under Cube Entertainment. He was 16 at the time, making him the youngest member -- the group's maknae -- and one of the youngest K-pop idols to debut in a major group that year.
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