Yun Hwan Ko

Ryeo Un

  • Name: Ryeo Un
  • Native name: 려운
  • Also Known as: Ko Yoon Hwan, Ko Yoonhwan, Ko Yunhwan, Go Yun Hwan, Go Yunhwan, 고윤환, 麗韻, 高贇煥
  • Nationality: South Korean
  • Gender: Male
  • Born: August 26, 1998
  • Age: 26
Ryeo Un, born Ko Yun Hwan (고윤환) in Jeonju, Jeollabuk, South Korea, is a South Korean actor represented by Lucky Company (럭키컴퍼니). He attended Yongheung Elementary School (전주용흥초등학교) and Haeseong Middle School (전주해성중학교). Currently, he is studying acting in the Department of Performing Arts at Seokyeong University (서경대학교).

Originally aspiring to become a soldier, Ryeo Un shifted his career goal to acting after being inspired by a friend who enrolled in acting classes during his first year of high school. He decided to pursue acting and focused on preparing for university entrance exams to major in the field. After moving to Seoul for university, he caught the attention of Lucky Company's management team through his social media presence, leading to a contract.

Ryeo Un made his acting debut in 2017 with the SBS drama Temperature of Love (사랑의 온도).

(Source: kisskh) Edit Biography
Drama
Year Title # Role Rating
TBA The Borrowed Body
Korean Drama, 0000, 15 eps
Yoon Ho Young (Main Role)
15
Yoon Ho Young
Main Role
0.0
2025 Weak Hero Class 2
Korean Drama, 2025, 8 eps
Park Hu Min / Ben Park (Main Role)
8
Park Hu Min / Ben Park
Main Role
8.9
2025 A History of Losers
Korean Drama, 2025, 8 eps
No Jun Seok (Main Role)
8
No Jun Seok
Main Role
7.3
2024 Namib
Korean Drama, 2024, 12 eps
Yoo Jin U (Main Role)
12
Yoo Jin U
Main Role
7.8
2023 Death's Game
Korean Drama, 2023, 4 eps
[Youngest PD] (Ep. 1) (Guest Role)
4
[Youngest PD] (Ep. 1)
Guest Role
8.8
2023 Twinkling Watermelon
Korean Drama, 2023, 16 eps
Ha Eun Gyeol (Main Role)
16
Main Role
9.2
2023 The Secret Romantic Guesthouse
Korean Drama, 2023, 18 eps
Kang San (Main Role)
18
Kang San
Main Role
8.1
2022 Through the Darkness
Korean Drama, 2022, 12 eps
Jung U Ju (Support Role)
12
Support Role
8.7
2021 Adult Trainee
Korean Drama, 2021, 7 eps
Kim Nam Ho (Ep. 3-5) (Main Role)
7
Kim Nam Ho (Ep. 3-5)
Main Role
7.7
2020 18 Again
Korean Drama, 2020, 16 eps
Hong Si U (Support Role)
16
Support Role
8.6
2020 Homemade Love Story
Korean Drama, 2020, 100 eps
Lee Ra Hun [Chae Un's brother] (Support Role)
100
Lee Ra Hun [Chae Un's brother]
Support Role
7.8
2020 IN-SEOUL Season 2
Korean Drama, 2020, 12 eps
Yoon Sung Hyun (Main Role)
12
Yoon Sung Hyun
Main Role
7.7
2020 The World of My 17
Korean Drama, 2020, 12 eps
Yoo Jin Hyuk [Na Ri's classmate] (Support Role)
12
Yoo Jin Hyuk [Na Ri's classmate]
Support Role
7.7
2020 365: Repeat the Year
Korean Drama, 2020, 24 eps
Nam Soon Woo [Detective] (Support Role)
24
Nam Soon Woo [Detective]
Support Role
8.5
2019 IN-SEOUL
Korean Drama, 2019, 15 eps
Yoon Sung Hyun (Main Role)
15
Main Role
7.6
2019 Doctor Prisoner
Korean Drama, 2019, 32 eps
Han Bit [So Geum's brother] (Support Role)
32
Han Bit [So Geum's brother]
Support Role
8.3
2018 Instant Romance
Korean Drama, 2018, 10 eps
Jang Su Ho (Main Role)
10
Main Role
7.4
2018 Doo Teob's Pretty Easy School Life
Korean Drama, 2018, 8 eps
Hak Jun (Main Role)
8
Hak Jun
Main Role
7.3
2017 Temperature of Love
Korean Drama, 2017, 40 eps
[Youngest cook] (Support Role)
40
[Youngest cook]
Support Role
7.5
2017 You're Too Much
Korean Drama, 2017, 50 eps
(Support Role)
50
Support Role
6.8
Special
Year Title # Role Rating
2020 18 Again|A Make-up Class in Serim High
Korean Special, 2020, 2 eps
(Main Role)
2
Main Role
8.0
2020 18 Again|Serim High After School Activity
Korean Special, 2020, 4 eps
(Main Role)
4
Main Role
8.1
2018 Real Life Love Story Season 4
Korean Special, 2018, 8 eps
[Play different roles] (Main Role)
8
[Play different roles]
Main Role
7.6
2018 Real Life Love Story Season 2
Korean Special, 2018, 9 eps
[Play different roles] (Main Role)
9
[Play different roles]
Main Role
7.5
2018 Real Life Love Story Season 3
Korean Special, 2018, 7 eps
[Play different roles] (Main Role)
7
[Play different roles]
Main Role
7.5
2017 Real Life Love Story
Korean Special, 2017, 8 eps
[Plays different roles] (Main Role)
8
[Plays different roles]
Main Role
7.4
TV Show
Year Title # Role Rating
2023 EXchange Season 3
Korean TV Show, 2023, 20 eps
(Ep. 1-2) (Guest)
20
(Ep. 1-2)
Guest
7.7
2019 Creator Campus
Korean TV Show, 2019, 12 eps
Himself (Regular Member)
12
Himself
Regular Member
7.7
2013 I Live Alone
Korean TV Show, 2013, 615 eps
(Ep. 427) (Guest)
615
(Ep. 427)
Guest
8.5
Articles
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'Weak Hero Class 2': Netflix unveils premiere date for high-school action thriller
News - Apr 2, 2025

The highly-anticipated high-school-themed action K-drama is coming soon

Ryeo Un

Yun Hwan Ko
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Details

  • First Name: Yun Hwan
  • Family Name: Ko
  • Native name: 려운
  • Also Known as: Ko Yoon Hwan, Ko Yoonhwan, Ko Yunhwan, Go Yun Hwan, Go Yunhwan, 고윤환, 麗韻, 高贇煥
  • Nationality: South Korean
  • Gender: Male
  • Born: August 26, 1998
  • Age: 26

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