Jung In Seong

Name: Jung In Seong
Native name: 정인성
Also Known as: JungSung, Jung InSungDae, Jung In Sung
Nationality: South Korean
Gender: Male
Born: July 1, 1994
Age: 32

Jung In Sung is the main vocalist of the boy group KNK. Along with bandmate Seungjun, he was a former Big Hit Entertainment trainee with the members of the boy group BTS. He was also a FNC Entertainment trainee. In 2015, together with his bandmates, he started hosting the reality show My Keunakeun Television on Naver TV Cast. Edit Biography

Year	Title	#	Role	Rating
2026	The Vending Machine Korean Drama, 2026, 51 eps Park Do Yeong (Main Role)	51	Park Do Yeong Main Role	0.0
2021	Dali y el Príncipe Arrogante Korean Drama, 2021, 16 eps [Himself - KNK member] (Ep. 7) (Guest Role)	16	[Himself - KNK member] (Ep. 7) Guest Role	8.3
2017	20th Century Boy and Girl Korean Drama, 2017, 32 eps [Boys Be Ambitious idol group member] (Guest Role)	32	[Boys Be Ambitious idol group member] Guest Role	7.8

Year	Title	#	Role	Rating
2024	Build Up: Vocal Boy Group Survivor Korean TV Show, 2024, 10 eps [Contestant] (Regular Member)	10	[Contestant] Regular Member	8.0
2020	Question Mark Korean TV Show, 2020, 143 eps (Ep. 34) (Guest)	143	(Ep. 34) Guest	0.0
2019	Good Friends Korean TV Show, 2019, 20 eps (Ep. 9-10) (Guest)	20	(Ep. 9-10) Guest	6.0
2019	Q&A Machine Korean TV Show, 2019, 34 eps (Ep. 5) (Guest)	34	(Ep. 5) Guest	7.6
2019	Player Korean TV Show, 2019, 21 eps (Ep. 18) (Guest)	21	(Ep. 18) Guest	7.9
2019	Idol Lunch Box Korean TV Show, 2019, 10 eps (Ep. 8) (Guest)	10	(Ep. 8) Guest	0.0
2019	Aja Aja Tayo! Season 2 Filipino TV Show, 2019, 12 eps (Ep. 11-12) (Guest)	12	(Ep. 11-12) Guest	10.0
2018	2018 Idol Star Athletics Championships Korean TV Show, 2018, 4 eps (Regular Member)	4	Regular Member	7.8
2017	MIXNINE Korean TV Show, 2017, 14 eps [Contestant] (Regular Member)	14	[Contestant] Regular Member	7.0
2017	My KNK TV 2 Korean TV Show, 2017, 34 eps (Main Host)	34	Main Host	9.5
2017	Fantastic Duo: Season 2 Korean TV Show, 2017, 36 eps (Ep. 29-30) (Guest)	36	(Ep. 29-30) Guest	7.9
2017	K-RUSH Korean TV Show, 2017, 20 eps (Ep. 9-10) (Guest)	20	(Ep. 9-10) Guest	8.0
2016	2016 SBS Gayo Daejeon Korean TV Show, 2016, 1 eps [Performer] (Regular Member)	1	[Performer] Regular Member	7.9
2016	Hitmaker: Season 3 Korean TV Show, 2016, 6 eps (Guest)	6	Guest	7.7
2016	Fact iN Star Korean TV Show, 2016, 200 eps (Ep. 9, 40) (Guest)	200	(Ep. 9, 40) Guest	8.2
2016	The Immigration Korean TV Show, 2016, 13 eps (Guest)	13	Guest	8.0
2016	Duet Song Festival: Season 1 Korean TV Show, 2016, 47 eps [Panelist] (Ep. 12) \| [Performer] (Ep. 22) (Guest)	47	[Panelist] (Ep. 12) \| [Performer] (Ep. 22) Guest	8.2
2015	My KNK TV Korean TV Show, 2015, 70 eps (Main Host)	70	Main Host	8.7
2015	King of Mask Singer Korean TV Show, 2015, 525 eps [Contestant] (Ep. 215) \| [Panelist] (Ep. 281-282) (Guest)	525	[Contestant] (Ep. 215) \| [Panelist] (Ep. 281-282) Guest	8.0
2013	Cheongdamdong 111 Korean TV Show, 2013, 8 eps (Regular Member)	8	Regular Member	7.3
2013	After School Club Korean TV Show, 2013, 671 eps (Ep. 210, 241, 266, 351, 378) (Guest)	671	(Ep. 210, 241, 266, 351, 378) Guest	7.8
2011	Weekly Idol Korean TV Show, 2011, 707 eps (Ep. 256, 296) (Guest)	707	(Ep. 256, 296) Guest	8.1
2011	Immortal Songs: Singing the Legend Korean TV Show, 2011, 800 eps (Ep. 294) (Guest)	800	(Ep. 294) Guest	8.2
2010	Hello Counselor Korean TV Show, 2010, 431 eps (Ep. 285) (Guest)	431	(Ep. 285) Guest	7.9
2010	Running Man Korean TV Show, 2010, 850 eps (Ep. 319) (Guest)	850	(Ep. 319) Guest	9.2

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