The Pulse of K-Entertainment

Yook Sung-jae
ArtistIWill Media

Yook Sung-jae

Yook Sung-jae (육성재) sits in a rare crossover lane where idol visibility and actor recognition carry equal weight. He debuted with BTOB in 2012 under CUBE Entertainment, then built a second career through drama and variety without diluting the singer identity that made him stand out in the first place.

His acting rise came through a sequence of widely seen titles, from youth drama breakout to the mainstream reach of Goblin. At the same time, Sung-jae kept his value inside BTOB by holding down one of the group's strongest public-recognition profiles. Since moving his solo management to iWill Media, he has been able to push music, acting, and entertainment work in parallel instead of forcing one lane to shrink for the other.

That balance is what still makes him commercially relevant in 2026. Sung-jae can headline a drama rollout, front a solo release, or drop back into BTOB group activity without needing a reinvention narrative. HITKULTR tracks that dual-career arc through his group milestones, solo catalog, and screen credits.

BTOB
Vocalist, Face of the Group, Maknae of BTOB
3 articles7 creditsDebut: March 21, 2012South Korean

Gallery

Discography

2026
We TogetherAlbum
VocalistBTOB
2021
1st 1995Mini Album
Solo Artist

Filmography

2026
Nine to SixK-Drama
Han Seon-wooSBS
2025
All About BlueK-Drama
Lead Role
2024
The Haunted PalaceK-Drama
Lead Role
2016
GoblinK-Drama
Yook Deok-hwa
2015
Who Are You: School 2015K-Drama
Lee Yi-an

Fans Also Ask

What is Yook Sung-jae most known for?
Yook Sung-jae is best known for doing two jobs at once at a high level: he is a vocalist and public face of BTOB, and he is also a widely recognized drama actor. For many viewers outside fandom, his Goblin role helped turn him from idol-member visibility into mainstream entertainment familiarity.
When did Yook Sung-jae debut with BTOB?
Sung-jae debuted with BTOB on March 21, 2012. He entered the industry very young and quickly became one of the group's most publicly visible members. That long runway matters because he now has more than a decade of idol, variety, and acting experience working at the same time.
Is Yook Sung-jae still part of BTOB?
Yes. Even after leaving CUBE Entertainment for his solo management, Sung-jae has remained part of BTOB for group activity. That arrangement reflects a broader industry shift where established idols separate individual management from group identity without fully severing the original team connection.
What agency is Yook Sung-jae under now?
For solo activities, Yook Sung-jae is managed by iWill Media. He signed with the company after his CUBE Entertainment contract ended in late 2023. The move gave him a dedicated structure for acting, music, and broader entertainment work while preserving his BTOB group identity.
Why has Yook Sung-jae lasted so long in Korean entertainment?
He has lasted because he never depended on only one skill set. Sung-jae can sing, handle variety, and lead or support scripted projects without feeling out of place in any of those lanes. That flexibility has kept him relevant through changing idol cycles and shifting streaming-era casting demand.

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