- For other people known as 'Yun Seo', see Yoonseo.
Jang Yun Seo (장윤서) is a South Korean actor. He is a former member of the pre-debut boy group ASTEON.
He is best known for being a contestant on the reality survival show YG Treasure Box.
Career[]
2018–2019: YG Treasure Box[]
In November 2018, Yunseo participated in the survival show YG Treasure Box under Group B. Unfortunately, he was eliminated in the ninth episode.
2023–2025: ASTEON, return to acting[]
On September 22, 2023, he featured in promotional pictures for MEGAMETA's new upcoming actor-idol boy group ASTEON.[1] Later on September 27, his individual poster was revealed alongside the other members which introduced his stage name as Jang Yun Seong.[2]
On April 1, 2025, ASTEON announced their new lineup that does not include him and his profile has been removed from the company's website and SNS accounts.
He has since returned to acting and has been announced to be starring in the upcoming film "세하별" which would be released on June 25, 2025.[3][4]
Filmography[]
Films[]
- 세하별 (2025)
Television series[]
- Jinxed at First (KBS2, 2022)
- At A Distance, Spring Is Green (KBS2, 2021) (episode 4)
Survival shows[]
- YG Treasure Box (JTBC2, 2018) - contestant
Gallery[]
References[]
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