Legend of the Blue Sea (2016–2017)

Jun Ji-hyun

Shim Chung 20 episodes, 2016-2017

Lee Min-Ho

Heo Joon Jae 20 episodes, 2016-2017

Lee Hee-joon

Jo Nam Doo 20 episodes, 2016-2017

Won Ho Shin

Tae Oh 20 episodes, 2016-2017

Hye-Sun Shin

Cha Shi Ah 19 episodes, 2016-2017

Moon So-ri

Ahn Jin Joo 19 episodes, 2016-2017

Na Young-hee

Mo Yoo Ran 19 episodes, 2016-2017

Sin-hye Hwang

Kang Seo Hee 18 episodes, 2016-2017

Ji-Hoon Lee

Heo Chi Hyun 17 episodes, 2016-2017

Park Hae-soo

Hong Dong Pyo / ... 15 episodes, 2016-2017

Dong-il Sung

Lord Yang / ... 15 episodes, 2016-2017

Jung-woo Choi

Heo Il Joong / ... 13 episodes, 2016-2017

Jinyoung Park

Heo Joon jae (young) 7 episodes, 2016-2017

Jin Kyeong Hong

Homeless Woman 7 episodes, 2016-2017

Lee Jae-won

Cha Dong Shik 6 episodes, 2016

Yi-yeong Shim

Moo Yoo Ran (young) 5 episodes, 2016-2017

Kim Sung-ryung

Jang Jin Ok 3 episodes, 2016

Jo Jung-Suk

Yoo Jong Hoon 2 episodes, 2016

So Won Kal

Shim Chung (young) 2 episodes, 2016

Carson Allen

Mermaid 1 episode, 2016

Kim Sun-young

Woman at sauna 1 episode, 2016

Krystal Jung

Flight attendant 1 episode, 2016

Park Jin-Joo

Nurse 1 episode, 2016

Oscar Foronda

ice-cream parlor 1 episode, 2016

Tae-Hyun Cha

Han River Con Man 1 episode, 2016

Go Gyu-pil

Han Sung Tae 1 episode, 2016

Jae-hong Ahn

Thomas 1 episode, 2016

Yu-mi Jeong

Heo Joon Jae (young) 1 episode, 2016

Ho-jae Lee

Department Assistant 1 episode, 2016

Sergi Subirà

Mermaid 1 episode, 2017

Im Won-hee

Doctor 1 episode, 2017

Maribel Martin Julian

Employee 3 (uncredited) 1 episode, 2016