Yoon Seo Yeon

Name: Yoon Seo Yeon
Native name: 윤서연
Also Known as: Seoyeon, YSY, Yoon Seoyeon
Nationality: South Korean
Gender: Female
Born: August 6, 2003
Age: 22

Yoon Seo Yeon is a South Korean singer, dancer and member of tripleS (트리플에스). She graduated from Chungnam Girls' High School.

She made her official debut in February 2023 as the group's vocalist with their first EP, "Assemble". They are managed by ModHaus (모드하우스), who crafted tripleS to be a decentralized idol group where the members will rotate between the full group, sub-units, and solo activities, as chosen by fans. As such, she is part of 3 different sub-units: +(KR)ystal Eyes, Acid Eyes and LOVElution. The agency has also assigned each member a number, and hers is S1.

(Source: MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2024	What Summer Loves Korean Drama, 2024, 58 eps Baek Yeo Reum (Main Role)	58	Baek Yeo Reum Main Role	7.4

Year	Title	#	Role	Rating
2025	2025 Idol Star Athletics Championships Korean TV Show, 2025, 3 eps (Regular Member)	3	Regular Member	7.6
2025	Badge War Season 3: No Badge No Power Korean TV Show, 2025, 4 eps [Contestant] (Regular Member)	4	[Contestant] Regular Member	8.3
2025	Workdol Season 4 Korean TV Show, 2025, 25 eps (Ep. 11) (Guest)	25	(Ep. 11) Guest	7.9
2024	Min Ju's Pink Cabinet Korean TV Show, 2024, 51 eps (Ep. 21) (Guest)	51	(Ep. 21) Guest	8.2
2024	2024 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2024, 3 eps (Regular Member)	3	Regular Member	7.7
2024	Badge War Season 2 Korean TV Show, 2024, 4 eps [Contestant] (Regular Member)	4	[Contestant] Regular Member	8.1
2024	Gone PD Korean TV Show, 2024, 3 eps [Contestant] (Regular Member)	3	[Contestant] Regular Member	6.7
2024	Inssadong Sulzzi Korean TV Show, 2024, 22 eps (Ep. 19) (Guest)	22	(Ep. 19) Guest	8.2
2023	Strong Girl: Badge War Korean TV Show, 2023, 4 eps [Contestant] (Regular Member)	4	[Contestant] Regular Member	8.1
2023	Queendom Puzzle Korean TV Show, 2023, 10 eps [Contestant] (Ep. 1-8) (Regular Member)	10	[Contestant] (Ep. 1-8) Regular Member	7.3
2023	Ano-chan no Den Den Denpa Japanese TV Show, 2023, 180 eps (Ep. 70) (Guest)	180	(Ep. 70) Guest	0.0
2023	Girls Night Out Korean TV Show, 2023, 12 eps (Ep.1) (Guest)	12	(Ep.1) Guest	0.0
2023	K-Pop Generation Korean TV Show, 2023, 8 eps (Regular Member)	8	Regular Member	7.6
2022	Secret Airlines Korean TV Show, 2022, 21 eps (Ep. 18) (Guest)	21	(Ep. 18) Guest	0.0
2022	Aiki's Thumbs Up Korean TV Show, 2022, 57 eps (Ep. 47) (Guest)	57	(Ep. 47) Guest	7.7
2018	Omniscient Interfering View Korean TV Show, 2018, 500 eps [Special appearance] (Ep. 303) \| [Guest] (Ep. 307) (Guest)	500	[Special appearance] (Ep. 303) \| [Guest] (Ep. 307) Guest	7.8
2013	After School Club Korean TV Show, 2013, 671 eps (Ep. 555, 577) (Guest)	671	(Ep. 555, 577) Guest	7.8
2011	Weekly Idol Korean TV Show, 2011, 707 eps (Ep. 662) (Guest)	707	(Ep. 662) Guest	8.1
2011	Immortal Songs: Singing the Legend Korean TV Show, 2011, 800 eps (Ep. 675) (Guest)	800	(Ep. 675) Guest	8.2