Sung Hyuk Seo

Seo Sung Hyuk

  • Name: Seo Sung Hyuk
  • Native name: 서성혁
  • Also Known as: Seo Seong Hyeok
  • Nationality: South Korean
  • Gender: Male
  • Born: April 26, 1999
  • Age: 27
Seo Sung Hyuk is a South Korean singer, dancer, and former member of RAINZ (레인즈) and TAN (티에이엔). He graduated from Bucheon Sangwon High School and is enrolled in the Acting program at Baekseok University of Arts.

He participated in the singing survival show "Produce 101 Season 2" and finished in 31st place. However, after the show concluded, fans began petitioning MNet to create a project group with popular contestants outside of the Top 10. So, the Japanese agency KISS Entertainment (キッス・エンタテインメント) took over the fan request.

He made his debut in October 2017 as RAINZ's main vocalist and maknae with their first EP, "Sunshine". The group signed a one-year contract and officially disbanded in October 2018, when they concluded the last group activities in Japan.

He made his acting debut in 2017 with a role in the web drama "3AM Season 2" (새벽세시2).
In 2019, he made his debut as a soloist with the single "Moonlight Song".

In late 2021, he entered the singing survival show "Extreme Debut: Wild Idol" and finished in 4th place, earning a spot in a new project group called TAN. He signed a two-and-a-half-year contract with Think Entertainment (생각엔터테인먼트) and re-debuted in March 2022 with their 1st mini-album "1TAN" as the lead vocalist.

However, the agency became embroiled in several controversies, and all members ended their contracts in June 2024. A few weeks later, leader Lee Chang Sun announced the group's disbandment.

He enlisted for his mandatory military service on January 20, 2025 and will be discharged on July 19, 2026.

(Source: MyDramaList) Edit Biography
Drama
Year Title # Role Rating
2021
High! Touch
High! Touch
Korean Drama, 2021, 6 eps
Seo Eun Jae (Main Role)
6
Seo Eun Jae
Main Role
6.8
2020
Winter Vacation
Winter Vacation
Korean Drama, 2020, 6 eps
Seo Eun Jae (Main Role)
6
Seo Eun Jae
Main Role
6.5
2019
Summer Vacation
Summer Vacation
Korean Drama, 2019, 6 eps
Seo Eun Jae (Main Role)
6
Seo Eun Jae
Main Role
6.9
2017
3 AM Season 2
3 AM Season 2
Korean Drama, 2017, 6 eps
(Main Role)
6
Main Role
6.7
TV Show
Year Title # Role Rating
2023
Secret Tour
Secret Tour
Korean TV Show, 2023, 30 eps
(Ep. 12) (Guest)
30
(Ep. 12)
Guest
0.0
2022
2022 Idol Star Athletics Championships Chuseok Special
2022 Idol Star Athletics Championships Chuseok Special
Korean TV Show, 2022, 3 eps
(Regular Member)
3
Regular Member
7.7
2022
Midnight Idol Season 3
Midnight Idol Season 3
Korean TV Show, 2022, 50 eps
(Ep. 26) (Guest)
50
(Ep. 26)
Guest
7.7
2022
Secret Airlines
Secret Airlines
Korean TV Show, 2022, 21 eps
(Ep. 12, 20) (Guest)
21
(Ep. 12, 20)
Guest
0.0
2022
Dancing Dol Stage
Dancing Dol Stage
Korean TV Show, 2022, 3 eps
(Regular Member)
3
Regular Member
8.4
2022
We Are a Family
We Are a Family
Korean TV Show, 2022, 2 eps
(Regular Member)
2
Regular Member
0.0
2022
Studio Moon Night Season 2
Studio Moon Night Season 2
Korean TV Show, 2022, 47 eps
(Ep. 166) (Guest)
47
(Ep. 166)
Guest
8.5
2021
2021 MBC Music Festival: Together
2021 MBC Music Festival: Together
Korean TV Show, 2021, 1 eps
[Performer] (Regular Member)
1
[Performer]
Regular Member
8.1
2021
Extreme Debut: Wild Idol
Extreme Debut: Wild Idol
Korean TV Show, 2021, 13 eps
[Contestant] (Regular Member)
13
[Contestant]
Regular Member
7.8
2021
Midnight Idol Season 2
Midnight Idol Season 2
Korean TV Show, 2021, 150 eps
(Ep. 108, 136) (Guest)
150
(Ep. 108, 136)
Guest
8.6
2021
Studio Moon Night
Studio Moon Night
Korean TV Show, 2021, 156 eps
(Ep. 142) (Guest)
156
(Ep. 142)
Guest
8.5
2020
Master Kwang of the Photo Studio
Master Kwang of the Photo Studio
Korean TV Show, 2020, 20 eps
(Ep. 23) (Guest)
20
(Ep. 23)
Guest
0.0
2019
Lunch Attack
Lunch Attack
Korean TV Show, 2019, 890 eps
(Ep. 673, 743) (Guest)
890
(Ep. 673, 743)
Guest
6.0
2017
Produce 101 Season 2
Produce 101 Season 2
Korean TV Show, 2017, 11 eps
[Contestant] (Regular Member)
11
[Contestant]
Regular Member
8.3
2016
Fact iN Star
Fact iN Star
Korean TV Show, 2016, 200 eps
(Ep. 50, 64) (Guest)
200
(Ep. 50, 64)
Guest
8.2
2015
King of Mask Singer
King of Mask Singer
Korean TV Show, 2015, 525 eps
[Contestant] (Ep. 476-477) (Guest)
525
[Contestant] (Ep. 476-477)
Guest
8.0
2013
After School Club
After School Club
Korean TV Show, 2013, 671 eps
(Ep. 306, 532, 546, 566) (Guest)
671
(Ep. 306, 532, 546, 566)
Guest
7.8
2011
Weekly Idol
Weekly Idol
Korean TV Show, 2011, 707 eps
(Ep. 626) (Guest)
707
(Ep. 626)
Guest
8.1
2011
Immortal Songs: Singing the Legend
Immortal Songs: Singing the Legend
Korean TV Show, 2011, 800 eps
(Ep. 600-601, 603) (Guest)
800
(Ep. 600-601, 603)
Guest
8.2
Trending Articles
Kim Soo Hyun to resume activities after a year-long hiatus
News - Jun 8, 2026

Kim Soo Hyun is gearing up to resume activities, following a career-shattering controversy involving Kim Sae Ron

Namkoong Min and wife Jin Ah Reum expecting their first child
News - Jun 18, 2026

Actor Namkoong Min and his wife Jin Ah Reum are becoming parents four years after their marriage

Shin Min Ah addresses concerns over Western style of Disney+ K-drama 'The Remarried Empress'
Celebrity - Jun 16, 2026

Actress Shin Min Ah has addressed concerns about her upcoming Disney+ drama, 'The Remarried Empress'

'Duty after School' actress Kwon Eun Bin announces exit from entertainment industry
News - Jun 16, 2026

Former CLC member and 'Duty After School' actress Kwon Eun Bin announces her decision to leave the entertainment industry after nearly 10 years

Former LE SSERAFIM member Kim Ga Ram to return as an actress following school bullying controversy
News - Jun 18, 2026

Former LE SSERAFIM member Kim Ga Ram is set to begin her acting career

Lee Joon Gi to possibly star in new Netflix production
News - Jun 22, 2026

Lee Joon Gi is in talks for a new Netflix project!

Li Yi Tong and Joseph Zeng's 'The Legend of Rosy Clouds' announces premiere date
News - Jun 17, 2026

The highly anticipated historical drama 'The Legend of Rosy Clouds' has announced its premiere date

Seo Sung Hyuk

Sung Hyuk Seo
0 Followers
31 Hearts

Details

  • First Name: Sung Hyuk
  • Family Name: Seo
  • Native name: 서성혁
  • Also Known as: Seo Seong Hyeok
  • Nationality: South Korean
  • Gender: Male
  • Born: April 26, 1999
  • Age: 27

Weekly MyDramaList Support Goal

3%
Help Support MyDramaList

Top Contributors

4 edits
2 edits
1 edit
1 edit

Popular Lists

Related lists from users
Most handsome k-pop male idol
115 people 103 voters 3 loves
Kpop Idols
43 people