S
Seeun
Yoon Seeun
♀ female
June 14, 2003(22 years old)
Korean
Pyeongtaek, Gyeonggi, South Korea
Debuted November 12, 2020
0 followers
Position
Vocalist
Groups
S
STAYC
High Up Entertainment
Joined: November 12, 2020
167 cm
MBTI: INFP
Gemini
Blood Type: A
Special Skills
running, playing the flute
Biography
•She has an older sister and a younger brother.
•On August 8
•2023 STAYC announced that Sieun and Seeun will take the co-Leader position.
•She trained for 2 years and 7 months.
•She is good at cooking.
•She's in charge of aegyo.
•She has a pet cat.
•Her role model is SNSD's Taeyeon.
•She is left handed.
•Seeun's a former pre-debut member of Play M Girls.
•She was a child actress.
•She is a former trainee under Plan A Entertainment
•but she left in September 2019.
•Her charming point is her smile.
•She shares birthday with Tzuyu from Twice.
Posts
P
posts_bot
Dec 27, 2025
STAYC - EP.8: Making an idol album with AI @ What's Good, SE-YOUNG? (251226) [ENG SUB]
STAYCIsaJSeeunSieunSuminYoon
20d ago
P
posts_bot
Dec 13, 2025
STAYC Isa & Seeun - Ep.6 STAYC's Ideal Type World Cup @ What's Good, SE-YOUNG? (251212) [ENG SUB]
STAYCIsaSeeun
33d ago
P
posts_bot
Nov 22, 2025
STAYC Isa & Seeun - Ep.4 STAYC dances Just Dance when sad @ What's Good, SE-YOUNG? (251121) [ENG SUB]
IsaSeeun
55d ago
P
posts_bot
Nov 15, 2025
STAYC Isa & Seeun - Ep.3 Temu Unboxing @ What's Good, SE-YOUNG? (251114) [ENG SUB]
IsaSeeun
61d ago
P
posts_bot
Nov 1, 2025
STAYC Isa & Seeun - Ep.1 Idol Business Secrets Revealed @ What's Good, SE-YOUNG? (251031) [ENG SUB]
IsaSeeun
75d ago