Jeong Seung Hwan

Name: Jeong Seung Hwan
Native name: 정승환
Also Known as: Jeong Seunghwan, Jung Seunghwan
Nationality: South Korean
Gender: Male
Born: January 27, 2004
Age: 22

Jeong Seung Hwan is a South Korean singer, dancer, and member of ATBO (에이티비오). He graduated from Hanlim Entertainment Arts High School and is currently enrolled in the Acting program at Chung-Ang University. Before debuting, he spent 1 year and 9 months as a trainee.

In early 2022, he participated in the survival show “The Origin – A, B, Or What?” under IST Entertainment (IST엔터테인먼트) and ended up 1st place, qualifying to be a member of the show's project group.

He made his debut in July 2022 as ATBO's lead vocalist and main dancer with their first mini-album, "The Beginning: 開花".

In June 2024, they joined JUST B and formed a special project group called THE CREW ONE (더크루원). They participated in the survival show "Road to Kingdom Season 2" and the group was active until November of that year.

On October 20, 2025, IST announced he was enlisting for his mandatory military service. The agency published a handwritten note explaining his sudden decision to fulfill his military duties. He was discharged on April 19, 2027.

(Source: MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2024	Road to Kingdom: Ace of Ace Korean TV Show, 2024, 8 eps [Contestant] (Regular Member)	8	[Contestant] Regular Member	7.6
2024	2024 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2024, 3 eps (Regular Member)	3	Regular Member	7.7
2023	Let Me Know K-Pop! Japanese TV Show, 2023, 20 eps (Ep. 16) (Guest)	20	(Ep. 16) Guest	0.0
2023	Secret Tour Korean TV Show, 2023, 30 eps (Ep. 16) (Guest)	30	(Ep. 16) Guest	0.0
2023	Peak Time Korean TV Show, 2023, 11 eps [Contestant / ATBO] (Regular Member)	11	[Contestant / ATBO] Regular Member	8.3
2022	Hyun Jae’s Now Korean TV Show, 2022, 24 eps (Ep. 3) (Guest)	24	(Ep. 3) Guest	8.5
2022	I Live as an Idol Korean TV Show, 2022, 10 eps (Ep. 3) (Guest)	10	(Ep. 3) Guest	7.6
2022	Music Universe K-909 Korean TV Show, 2022, 21 eps (Ep. 16) (Guest)	21	(Ep. 16) Guest	7.9
2022	2022 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2022, 3 eps (Regular Member)	3	Regular Member	7.7
2022	Show! Music Core Coin Karaoke Korean TV Show, 2022, 45 eps (Ep. 5) (Guest)	45	(Ep. 5) Guest	8.3
2022	Korea on Stage: 600 Years of Open Roads Korean TV Show, 2022, 1 eps [Performer] (Regular Member)	1	[Performer] Regular Member	7.8
2022	Jaechan's Dream Korean TV Show, 2022, 193 eps (Ep. 18, 67, 189) (Guest)	193	(Ep. 18, 67, 189) Guest	8.4
2022	ATBO Walkshop Korean TV Show, 2022, 4 eps (Regular Member)	4	Regular Member	8.0
2022	Secret Airlines Korean TV Show, 2022, 21 eps (Ep. 7) (Guest)	21	(Ep. 7) Guest	0.0
2022	The Origin - A, B, or What Korean TV Show, 2022, 8 eps [Contestant] (Regular Member)	8	[Contestant] Regular Member	7.5
2022	Adola School Season 3: PR on Idol Korean TV Show, 2022, 38 eps (Ep. 35) (Guest)	38	(Ep. 35) Guest	8.1
2022	Melon Music Cafe Korean TV Show, 2022, 10 eps (Guest)	10	Guest	0.0
2021	The Return of Superman: Baby Cloud Korean TV Show, 2021, 100 eps (Ep. 69) (Guest)	100	(Ep. 69) Guest	8.2
2013	After School Club Korean TV Show, 2013, 671 eps (Ep. 535, 549, 576, 603, 654) (Guest)	671	(Ep. 535, 549, 576, 603, 654) Guest	7.8
2012	Show Champion Korean TV Show, 2012, 450 eps [Performer] (Ep. 444, 447) (Guest)	450	[Performer] (Ep. 444, 447) Guest	7.6
2011	Weekly Idol Korean TV Show, 2011, 707 eps (Ep. 618) (Guest)	707	(Ep. 618) Guest	8.1
2004	M Countdown Korean TV Show, 2004, 950 eps [Performer] (Ep. 763-765, 768) (Guest)	950	[Performer] (Ep. 763-765, 768) Guest	8.2
1998	Music Bank Korean TV Show, 1998, 1240 eps [Performer] (Guest)	1240	[Performer] Guest	7.8