Full cast of Gyeongseong Creature

Park Seo-jun

Jang Tae-sang / Jang Ho-jae

17 episodes

Han So-hee

Yoon Chae-ok

17 episodes

Kim Hae-sook

Nawol-daek

12 episodes

Choi Young-jun

Kato

11 episodes

Claudia Kim

Maeda

11 episodes

Cho Han-cheul

Yoon Joong-won

9 episodes

Park Ji-hwan

Goo Gap-pyeong

9 episodes

Hyun Bong-sik

Dr. Ichiro

9 episodes

Ok Ja-yeon

Na Young-choon

8 episodes

Wi Ha-jun

Kwon Jun-taek

8 episodes

Ahn Ji-ho

Park Beom-o

7 episodes

Kim Do-hyun

Ishikawa

7 episodes

Ji Woo

Myeong-ja

7 episodes

Woo Ji-hyun

Sachimoto

5 episodes

Bae Hyeon-seong

Seung-jo

5 episodes

Kang Mal-geum

Choi Sung-sim

3 episodes

Lim Cheol-soo

Mr. Oh

3 episodes

Choi Gwang-il

Jun-taek's father

3 episodes

Nam Myung-ryeol

Tailor

2 episodes

Kim Yoon-woo

Choi Young-gwan

2 episodes

Cho Jae-ryong

Soma

2 episodes

Jeong Gyu-su

General store owner

1 episode

Lee Kyu-sung

Mori

1 episode

Park Tae-in

Ahn Jong-Hyeok

1 episode

Lee Rang-seo

[Prisoner]

1 episode

Han Dong-won

[Police officer]

1 episode