Y

Y
Birth name	Choi Sung-yoon
Hangul	최성윤; 와이
Stage name	Y
Squad Number	3
Position	Main Vocal
Blood type	O
Birth date	July 31, 1995
Astrological zodiac sign	Leo
Chinese zodiac sign	Pig
Education	Changwon Daebang Elementary School Changwon Daebang Middle School Changshin High School Seoul Performing Arts High School
Instrument(s)	Vocal, Piano
Years active	2017-present
Agency	Woollim Entertainment

Choi Sung-yoon (Hangul: 최성윤, born July 31, 1995), better known by his stage name Y (Hangul: 와이) is a South Korean singer. He is a member of the South Korean boy band Golden Child.

History

Pre-debut

Y starred in the TV series My Lovely Girl as Jun-jun, a member of a fictional boy band "Infinite Power", alongside co-member Dae Yeol and INFINITE's Hoya and L.

Discography

OST

• "NEVER" (with Seung Min) (2019) [Part.3 for Legal High]
• "Love Shaker" (with Seung Min and Joo Chan)(2020) [For Best Mistake 2]
• "Come With Me" (with Ji Beom) (2020) [Part.1 for Lonely Enough To Love]

Collaborations

• "NOW N NEW 2021" (with 61 other singers) (2021)

Filmography

Variety Shows

Year	Title	Episode(s)	Network
2019	King of Masked Singer	195	MBC
2020	My Music Tent	4	Youtube/Studio FLO
2021	Idol Live School	7	U+ Idol Live
2021	The Playlist	8	Mnet/Youtube

Radio Shows

Year	Title	Episode(s)/Date(s)	Network
2018	Joochan’s Shining Streetlight Night Radio	9	VLive
2019	Idol Radio	January 18	MBC FM
2021	ssengsuda(쌩수다)	April 5	Naver NOW
2021	Victon's Blanket Kick	May 4, 11, 18; August 10	Naver NOW
2021	Choi Hwa-jeong's Power Time	August 14	SBS Power FM
2021	Jun Hyosung’s Dreaming Radio	October 14	MBC FM4U
2021	Kiss the Radio	October 18	KBS Cool FM
2021	BTOB's Kiss the Radio	November 11, 25	KBS Cool FM

Trivia

• He composed a song entitled "The Rest". It was aired in 2017 WoollimPick.
• He has one older sister.
• He has the same birthday and blood type as Joo Chan.
• His MBTI is INFP.
• He was strict with the younger members before debut, but has become much more relaxed and playful with them afterwards.