Y

Name: Y
Native name: 와이
Also Known as: Sungyoon, 최성윤, Choi Seong Yun
Nationality: South Korean
Gender: Male
Born: July 31, 1995
Age: 30

Choi Sung Yoon, known professionally as Y, is a South Korean singer, dancer, musical actor and member of GOLDEN CHILD (골든차일드). He graduated from Seoul Performing Arts High School and became a trainee in 2012.

He made his debut in August 2017 as the group's main vocalist with their first EP, "Gol-Cha!" and enjoyed initial success in the South Korean and Japanese markets.

In January 2022, they debuted in Japan with the single "A Woo!!" and their agency, Woolim Entertainment (울림엔터테인먼트), began planning for them to gain more international exposure through concert tours in the US and Europe.

He made his debut as a musical actor in mid-2022 with roles in "Altar Boyz" and "Midnight Sun". In March 2023, he released his first digital single as a soloist titled "If I Were The Wind" (바람이라면).

He enlisted for his mandatory military service on March 20, 2023, and will be discharged on September 19, 2024.

(Source: MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2020	Crash! Insignificant Reunion Korean Drama, 2020, 4 eps Himself (Main Role)	4	Himself Main Role	8.1
2019	Crash! Insignificant Roommates Korean Drama, 2019, 8 eps Choi Sung Yoon (Main Role)	8	Choi Sung Yoon Main Role	7.6
2017	20th Century Boy and Girl Korean Drama, 2017, 32 eps [Himself] (Ep. 1, 3) (Guest Role)	32	[Himself] (Ep. 1, 3) Guest Role	7.8
2014	My Lovely Girl Korean Drama, 2014, 16 eps Jun Jun [Member of Infinite Power] (Support Role)	16	Jun Jun [Member of Infinite Power] Support Role	6.8

Year	Title	Role	Rating
2018	Miracle Korean Movie, 2018, [Himself] (Support Role)	[Himself] Support Role	7.5

Year	Title	#	Role	Rating
2023	Lee Dae Hwistle Korean TV Show, 2023, 10 eps (Ep. 1) (Guest)	10	(Ep. 1) Guest	0.0
2022	Idol's Physical Race Korean TV Show, 2022, 7 eps (Ep. 3) (Guest)	7	(Ep. 3) Guest	8.1
2022	Max Chang Min's Free Hug Season 2 Korean TV Show, 2022, 10 eps (Ep. 3) (Guest)	10	(Ep. 3) Guest	8.1
2022	Idolympic Season 2 Korean TV Show, 2022, 20 eps (Ep. 1-2) (Guest)	20	(Ep. 1-2) Guest	0.0
2022	Jaechan's Dream Korean TV Show, 2022, 193 eps (Ep. 28, 162) (Guest)	193	(Ep. 28, 162) Guest	8.4
2022	My Playlist Korean TV Show, 2022, 10 eps (Ep. 9) (Guest)	10	(Ep. 9) Guest	7.1
2022	Aiki's Thumbs Up Korean TV Show, 2022, 57 eps (Ep. 23) (Guest)	57	(Ep. 23) Guest	7.7
2022	Adola School Season 3: PR on Idol Korean TV Show, 2022, 38 eps (Ep. 23) (Guest)	38	(Ep. 23) Guest	8.1
2021	Idolympic Korean TV Show, 2021, 20 eps (Ep. 1-2) (Guest)	20	(Ep. 1-2) Guest	8.4
2021	Adola School Season 2: Homecoming Day Korean TV Show, 2021, 22 eps (Ep. 6) (Guest)	22	(Ep. 6) Guest	8.5
2021	Midnight Idol Season 2 Korean TV Show, 2021, 150 eps (Ep. 26) (Guest)	150	(Ep. 26) Guest	8.6
2021	Will This Work?: Melon Station Korean TV Show, 2021, 49 eps (Ep. 1, 24) (Guest)	49	(Ep. 1, 24) Guest	8.3
2021	The Playlist Korean TV Show, 2021, 10 eps (Ep. 8) (Guest)	10	(Ep. 8) Guest	10.0
2021	Max Chang Min's Free Hug Korean TV Show, 2021, 51 eps (Ep. 16) (Guest)	51	(Ep. 16) Guest	7.8
2021	Gol-Cha's Holiday Season 4 Korean TV Show, 2021, 4 eps (Main Host)	4	Main Host	8.6
2021	D&E Show Korean TV Show, 2021, 250 eps (Ep. 204) (Guest)	250	(Ep. 204) Guest	7.7
2021	On Air: The Secret Contract Korean TV Show, 2021, 10 eps (Guest)	10	Guest	9.7
2021	Crazy Gol-Cha Cam Season 2 Korean TV Show, 2021, 5 eps (Regular Member)	5	Regular Member	8.9
2021	Secret Friend of Idols Season 2 Korean TV Show, 2021, 19 eps (Ep. 4-5) (Guest)	19	(Ep. 4-5) Guest	8.2
2021	Studio Moon Night Korean TV Show, 2021, 156 eps (Ep. 75, 108) (Guest)	156	(Ep. 75, 108) Guest	8.5
2021	Ontact Fan Meeting: Golden Child Korean TV Show, 2021, 4 eps (Regular Member)	4	Regular Member	0.0
2021	Adola School Korean TV Show, 2021, 32 eps (Ep. 7) (Guest)	32	(Ep. 7) Guest	0.0
2020	Can You Hear My Trip Korean TV Show, 2020, 4 eps (Ep. 1) (Guest)	4	(Ep. 1) Guest	7.7
2020	Idol Picknic: Golden Child Korean TV Show, 2020, 2 eps (Regular Member)	2	Regular Member	8.1
2020	Idol Human Theater Korean TV Show, 2020, 104 eps (Ep. 46) (Guest)	104	(Ep. 46) Guest	8.4
2020	Master Kwang of the Photo Studio Korean TV Show, 2020, 20 eps (Ep. 15) (Guest)	20	(Ep. 15) Guest	0.0
2020	Eungsu CINE Korean TV Show, 2020, 579 eps (Ep. 110) (Guest)	579	(Ep. 110) Guest	6.0
2020	2020 Idol eSports Athletics Championships Korean TV Show, 2020, 1 eps [KartRider Rush+] {PUBG} (Guest)	1	[KartRider Rush+] {PUBG} Guest	7.8
2020	Big Battle Korean TV Show, 2020, 4 eps (Ep. 1-4) (Main Host)	4	(Ep. 1-4) Main Host	8.0
2020	Idol Challenge: Another Class Korean TV Show, 2020, 9 eps (Ep. 5) (Guest)	9	(Ep. 5) Guest	8.0
2020	IDOL VS. IDOL Japanese TV Show, 2020, 80 eps (Ep. 21-24) (Guest)	80	(Ep. 21-24) Guest	8.2
2020	Idol Workshop: Golden Child Korean TV Show, 2020, 5 eps (Regular Member)	5	Regular Member	8.5
2020	CH.GOL-CHA! Season 3 Korean TV Show, 2020, 20 eps (Regular Member)	20	Regular Member	8.5
2020	Question Mark Korean TV Show, 2020, 143 eps (Ep. 93) (Guest)	143	(Ep. 93) Guest	0.0
2020	Idol Ability Market Korean TV Show, 2020, 27 eps (Ep. 1, 9) (Guest)	27	(Ep. 1, 9) Guest	8.7
2020	Road to Kingdom Korean TV Show, 2020, 8 eps [Contestant] (Regular Member)	8	[Contestant] Regular Member	8.5
2020	Victon's Duvet Kick Korean TV Show, 2020, 75 eps (Ep. 54-56, 68) (Guest)	75	(Ep. 54-56, 68) Guest	7.6
2020	Juk Jae's Night Studio Korean TV Show, 2020, 534 eps (Ep. 407) (Guest)	534	(Ep. 407) Guest	8.3
2020	DongDong Game Center Korean TV Show, 2020, 4 eps [Ep. 3] (Guest)	4	[Ep. 3] Guest	10.0
2020	Secret Friend of Idols Korean TV Show, 2020, 38 eps (Ep. 19-20) (Guest)	38	(Ep. 19-20) Guest	8.2
2020	Idol League Season 2 Korean TV Show, 2020, 23 eps (Ep. 16) (Guest)	23	(Ep. 16) Guest	7.7
2020	‏2020 Idol Star Athletics Championships Korean TV Show, 2020, 9 eps (Regular Member)	9	Regular Member	7.8
2020	Crazy Gol-Cha Cam Korean TV Show, 2020, 6 eps (Regular Member)	6	Regular Member	8.5
2019	2019 KBS Song Festival Korean TV Show, 2019, 1 eps [Performer] (Regular Member)	1	[Performer] Regular Member	8.0
2019	Transonglation Korean TV Show, 2019, 67 eps (Ep. 2, 41, 57) (Guest)	67	(Ep. 2, 41, 57) Guest	8.3
2019	Idol Dabang Season 2 Korean TV Show, 2019, 10 eps (Ep. 4) (Guest)	10	(Ep. 4) Guest	7.5
2019	CH.GOL-CHA! Season 2 Korean TV Show, 2019, 19 eps (Regular Member)	19	Regular Member	8.6
2019	2019 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2019, 6 eps (Regular Member)	6	Regular Member	7.8
2019	Q&A Machine Korean TV Show, 2019, 34 eps (Ep. 26) (Guest)	34	(Ep. 26) Guest	7.6
2019	Midnight Idol Korean TV Show, 2019, 345 eps (Ep. 74, 220, 278, 309) (Guest)	345	(Ep. 74, 220, 278, 309) Guest	8.2
2019	Lunch Attack Korean TV Show, 2019, 890 eps (Ep. 511, 777) (Guest)	890	(Ep. 511, 777) Guest	6.0
2019	Gol-Cha's Holiday Season 3 Korean TV Show, 2019, 6 eps (Regular Member)	6	Regular Member	8.9
2019	TMI NEWS Korean TV Show, 2019, 56 eps (Ep. 26) (Guest)	56	(Ep. 26) Guest	7.9
2019	2019 Idol Star Athletics Championships Korean TV Show, 2019, 4 eps (Regular Member)	4	Regular Member	7.9
2018	2018 MBC Music Festival: The Live Korean TV Show, 2018, 1 eps [Performer] (Regular Member)	1	[Performer] Regular Member	7.6
2018	Let's Go Korea Gangwon-do INFINITE x Golden Child Battle Tour! Japanese TV Show, 2018, 8 eps (Regular Member)	8	Regular Member	7.7
2018	CH.GOL-CHA! Korean TV Show, 2018, 30 eps (Regular Member)	30	Regular Member	8.4
2018	2018 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2018, 4 eps (Regular Member)	4	Regular Member	7.7
2018	Mafia Dance Korean TV Show, 2018, 26 eps (Ep. 9) (Guest)	26	(Ep. 9) Guest	8.2
2018	Gol-Cha's Holiday Season 2 Korean TV Show, 2018, 4 eps (Regular Member)	4	Regular Member	8.5
2018	Gol-Cha's Holiday Korean TV Show, 2018, 2 eps (Regular Member)	2	Regular Member	8.4
2018	Idol League Korean TV Show, 2018, 56 eps (Ep. 16, 53) (Guest)	56	(Ep. 16, 53) Guest	8.4
2018	2018 Idol Star Athletics Championships Korean TV Show, 2018, 4 eps (Regular Member)	4	Regular Member	7.8
2018	Idol Certificate Center Korean TV Show, 2018, 2 eps (Main Host)	2	Main Host	8.4
2017	Ring it! Golden Child Korean TV Show, 2017, 8 eps (Main Host)	8	Main Host	8.3
2017	2017 Woollim Pick Korean TV Show, 2017, 8 eps (Regular Member)	8	Regular Member	8.3
2015	King of Mask Singer Korean TV Show, 2015, 525 eps [Contestant] (Ep. 195) (Guest)	525	[Contestant] (Ep. 195) Guest	8.0
2013	After School Club Korean TV Show, 2013, 671 eps (Ep. 283, 307, 342, 406) (Guest)	671	(Ep. 283, 307, 342, 406) Guest	7.8
2011	Weekly Idol Korean TV Show, 2011, 707 eps (Ep. 320, 363, 436, 465, 496, 523, 574) (Guest)	707	(Ep. 320, 363, 436, 465, 496, 523, 574) Guest	8.1
2011	Immortal Songs: Singing the Legend Korean TV Show, 2011, 800 eps (Ep. 442) (Guest)	800	(Ep. 442) Guest	8.2
2010	Hello Counselor Korean TV Show, 2010, 431 eps (Ep. 412) (Guest)	431	(Ep. 412) Guest	7.9
1998	Pops in Seoul Korean TV Show, 1998, 6000 eps (Guest)	6000	Guest	7.9

Kim Soo Hyun comeback possibility rises as court issues arrest warrant for Kim Se Ui

News - May 27, 2026

Kim Soo Hyun's agency, Gold Medalist, released an official statement following the South Korean police's statement, which stated that Kim Se Ui, the operator of the YouTube channel Garo Sero Research Institute (HoverLab), committed defamation against the