Full cast of Signal

Lee Je-hoon

Park Hae-young

16 episodes

Kim Hye-soo

Cha Soo-hyun

16 episodes

Cho Jin-woong

Lee Jae-han

16 episodes

Jang Hyun-sung

Kim Bum-joo

16 episodes

Jung Hae-kyun

Ahn Chi-soo

16 episodes

Kim Won-hae

Kim Gye-chul

16 episodes

Jung Han-bi

Oh Yoon-seo

16 episodes

Lee Yoo-jun

Jung Heon-gi

16 episodes

Kim Min-gue

Hwang Ui-kyung

16 episodes

Kang Chan-hee

Park Sun-woo

16 episodes

Im Hwa-young

Cha Soo-min

16 episodes

Jeon Su-ji

Kang Hye-seung

6 episodes

Shin Yi-Joon

Kang Hye-seung (Young)

6 episodes

Seo Ji-hoon

Jang Tae-jin

6 episodes

Kim Woo-seok

Lee Dong-jin

6 episodes

Son Hyun-joo

Jang Young-cheol

5 episodes

Choi Woo-ri

Shin Yeo-jin

3 episodes

Sung Hyun-mi

Jung Kyung-soon

3 episodes

Kim Ki-cheon

Lee Chan-goo

3 episodes

Lee Ki-seop

Lee Jin-hyung

3 episodes

Lee Shi-a

Kim Won-kyeong

3 episodes

Jeong Seok-yong

Oh Gyung-tae

3 episodes

Sieun

Oh Eun-ji

3 episodes

Yoo Ha-bok

Shin Dong-hoon

3 episodes

Lim Cheol-soo

Informant

3 episodes

Lee Dong-ha

Han Se-gyu

3 episodes

Lee Sang-yeob

Kim Jin-woo

3 episodes

Seo Eun-ah

Yoo Seung-yeon

3 episodes

Kim Yun-hee

Yoon Sang-mi

3 episodes

Sung Ki-yoon

Hae-yeong's Father

3 episodes

Hong Seok-bin

Lee Mi-sun's Husband

3 episodes

Oh Ki-hwan

Detective

3 episodes

Nam Sang-ran

Hwang Min-joo

3 episodes

Kim Jung-young

Kim Won-kyeong's Aunt

3 episodes

Oh Yeon-ah

Yoon Soo-ah

2 episodes

Song You-hyun

Kang Se-young

2 episodes

Seo Jung-joon

Seo Hyung-joon

2 episodes

Jeong Jong-yeol

Police Sergeant

2 episodes

Lee Do-yeop

Detective Park

2 episodes

Kim Myeong-joong

Prison Guard

2 episodes

Lee Na-ra

Shin Da-hye

2 episodes

Kim Hak-seon

Park Myung-hoon

2 episodes

Hong Boo-hyang

Farmer's Wife

2 episodes

Lee Jin-kwon

Bully

2 episodes

Park Jeong-min

Se-gyoo's Chauffeur

2 episodes

Choi Hyun-jun

Detective

2 episodes

Kang Joo-hee

Shin Dong-hoon's Wife

2 episodes

Lee Yeong-eun

Kim Yoon-jung

2 episodes

Kim Soo-jin

Kim Yoon-jung's Mother

2 episodes

Seo Ju-hee

Cha Soo-hyun's Mother

2 episodes

Yang Eun-yong

Sin Jeong-hye

2 episodes

Hyun Sung

Min Sung

2 episodes

Ji Hye-in

Girl 3

1 episode

Jang Hyuk-jin

Celebrity News Journalist

1 episode

Sun Yul-woo

Detective

1 episode

Yoon Bok-sung

Attorney

1 episode

Park Ji-yeon

Cafe Waitress

1 episode

Kim Ryeo-eun

Kim Ji-hee

1 episode

Park Seong-hoon

Detective Jung

1 episode

Lim Yong-soon

Workshop Owner

1 episode

Lee Chae-kyung

Jin-woo's Mother

1 episode

Song Kyung-hwa

Convenience Store Owner

1 episode

Park Eun-young

Student's Mother

1 episode

Hwang Seung-eon

Han Do-yeon

1 episode

Lee Jae-eun

Market Stall Owner

1 episode

Kang Chan-yang

Woman Going to Work

1 episode

Shin Mun-sung

Detective

1 episode

Oh Jin-ha

Sehoon Hospital Nurse

1 episode

Kim Sang-il

Detective

1 episode

Yoo Jae-ik

Oh Seung-joon

1 episode

Yang Seung-geol

Street Cleaner

1 episode

Geum Dong-hyeon

News Programme Guest

1 episode