Park Jun Seo

Name: Park Jun Seo
Native name: 박준서
Also Known as: Junseo
Nationality: South Korean
Gender: Male
Born: December 28, 2001
Age: 24

Park Jun Seo is a South Korean singer, dancer, former member of BAE173 (비에이이173) and DOUBLE 0NE (더블원), and current member of SIDEWALKCLUB (사워클). He graduated from Seoul National University Affiliated High School and is enrolled in the Japanese Language program at Hanyang Cyber University.

He made his debut in November 2020 as BAE173's leader, main dancer and vocalist with their first mini-album, "Intersection: Spark". In April 2022, he decided to step down from his role as leader, and Lee Han Gyul took over that responsibility.

As the group has not been able to promote as much, PocketDol Studio (포켓돌스튜디오) allows him to participate in survival shows.

In June 2025, the agency decided to launch a new project group combining some members of BAE173 and FANTASY BOYS. He re-debuted as part of DOUBLE 0NE with their first mini-album, "Xpert".

His contract with PocketDol Studio expired on June 30th 2026, concluding his activities with BAE173.

In September 2026, it was announced that he would be debuting alongside former BAE173 members Youngseo and Hyunwoo (formerly known as Muzin) as a member of SIDEWALKCLUB under Orca Music. Their debut date is currently unknown.

(Source: kisskh) Edit Biography

Year	Title	#	Role	Rating
2025	2025 Idol Star Athletics Championships Korean TV Show, 2025, 3 eps (Regular Member)	3	Regular Member	7.6
2025	Workdol Season 4 Korean TV Show, 2025, 25 eps (Ep. 4) (Guest)	25	(Ep. 4) Guest	7.8
2024	Starlight Boys Korean TV Show, 2024, 10 eps (Ep. 6) (Guest)	10	(Ep. 6) Guest	6.3
2024	Project 7 Korean TV Show, 2024, 12 eps [Contestant] (Regular Member)	12	[Contestant] Regular Member	7.3
2023	Peak Time Korean TV Show, 2023, 11 eps [Contestant / BAE173] (Regular Member)	11	[Contestant / BAE173] Regular Member	8.3
2022	Jaechan's Dream Korean TV Show, 2022, 193 eps (Ep. 29) (Guest)	193	(Ep. 29) Guest	8.4
2021	Studio Moon Night Korean TV Show, 2021, 156 eps (Ep. 30) (Guest)	156	(Ep. 30) Guest	8.5
2020	Idol House Korean TV Show, 2020, 18 eps (Ep. 15-16) (Guest)	18	(Ep. 15-16) Guest	8.1
2019	Midnight Idol Korean TV Show, 2019, 345 eps (Ep. 328) (Guest)	345	(Ep. 328) Guest	8.2
2019	5 Minutes to Six Korean TV Show, 2019, 425 eps (Ep. 320, 419) (Guest)	425	(Ep. 320, 419) Guest	8.0
2019	Lunch Attack Korean TV Show, 2019, 570 eps (Ep. 610, 690) (Guest)	570	(Ep. 610, 690) Guest	6.0
2016	BOYS24 Korean TV Show, 2016, 8 eps [Contestant] (Regular Member)	8	[Contestant] Regular Member	7.2
2011	Weekly Idol Korean TV Show, 2011, 707 eps (Ep. 486) (Guest)	707	(Ep. 486) Guest	8.1
2004	M Countdown Korean TV Show, 2004, 950 eps [Performer] (Ep. 692, 705-706, 747-748, 767-768) (Guest)	950	[Performer] (Ep. 692, 705-706, 747-748, 767-768) Guest	8.2

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