Cast Members (229)
Han Suk-kyu
as Teacher Kim / Bu Yong-ju
52 episodes
Ahn Hyo-seop
as Seo U-jin
32 episodes
Kim Hye-soo
as Lee Young-jo
1 episode
유연석
as Gang Dong-ju
41 episodes
이성경
as Cha Eun-jae
32 episodes
서현진
as Yun Seo-jeong
20 episodes
김주헌
as Park Min-guk
32 episodes
Shin Dong-wook
as Bae Mun-jeong
32 episodes
양세종
as Do In-beom
22 episodes
소주연
as Yoon A-reum
32 episodes
서은수
as Oh Yeon-hwa
20 episodes
윤나무
as Jeong In-su
52 episodes
진경
as Oh Myeong-sim
52 episodes
Im Won-hee
as Jang Gi-tae
52 episodes
Byun Woo-min
as Nam Do-il
52 episodes
Kim Min-jae
as Park Eun-tak
52 episodes
장혁진
as Song Hyeon-cheol
22 episodes
Lee Kyu-ho
as Mr. Gu Hwang-u
52 episodes
정지안
as Uhm Hyeon-jeong
32 episodes
고상호
as Yang Ho-jun
32 episodes
Yoon Bo-ra
as Ju Young-mi
32 episodes
Park Hyo-ju
as Shim Hye-jin
18 episodes
이경영
as Cha Jin-man
16 episodes
이신영
as Jang Dong-hwa
16 episodes
Kim Yong-jin
as Chief Lee
32 episodes
이홍내
as Lee Seon-ung
16 episodes
Choi Jin-ho
as Do Yun-wan
36 episodes
Kim Bo-jeong
as Nurse Uhm
20 episodes
Moon Ah-ram
as Nurse at Doldam Hospital
16 episodes
Park Jin-ah
as Hyeon Ji-hyeong
16 episodes
Jo Jung Yoon
as ER nurse at Doldam Hospital
16 episodes
Seo Hee
as Nurse at Doldam Hospital
16 episodes
서동원
as
16 episodes
Lee Ho-chul
as Loan shark
16 episodes
성령
as
16 episodes
Im Chul Soo
as Loan shark
16 episodes
Im Jae-geun
as Paramedic Heo
27 episodes
Seo Yeong
as Manager Ju
24 episodes
박종환
as Im Hyeon-jun
16 episodes
Lee Min-woong
as Ryu Jun-gil
16 episodes
Kim Hong-pa
as Yu Wun-young
36 episodes
Jo Ah-ra
as Nurse
20 episodes
Shin Dong-hoon
as Bodyguard
20 episodes
Jin Ah-rin
as Nurse Jeong
20 episodes
Lee Chae-eun
as Ji Min-jung
1 episode
배명진
as Heo Young-gyu
16 episodes
배명진
as Nurse Nam
2 episodes
김정영
as Dong-ju's mother
20 episodes
김정영
as Kang Dong-joo's mother
2 episodes
이지하
as Eun-jae's mother
16 episodes
이지하
as Cha Eun-jae's Mother
4 episodes
Jeong Han-seol
as Seong Yun
16 episodes
Jeong Han-seol
as Jo Sung-yoon
2 episodes
Joo Hyun
as Shin Myeong-ho
20 episodes
Joo Hyun
as Chairman Shin Myung Ho [Former chairman]
1 episode
김중기
as Cardiothoracic Surgeon
1 episode
Moon Ji-in
as Jo A-ra
1 episode
Tae In-ho
as Moon Tae-ho
2 episodes
Jeong Kang-hee
as Anal Patient
1 episode
Lee Ji-yeon
as Nurse Jin
1 episode
이철민
as Ham Seung-ho
2 episodes
Hwang Chan-seong
as Young Gyun
3 episodes
신승환
as Webtoon writer
5 episodes
Kang Chan
as Park Joo-hyuk
2 episodes
한갑수
as Park Joo-hyuk's father
2 episodes
Park Doo-sik
as Boyfriend of the appendicitis patient fertilizer
1 episode
Yoon Chan-young
as Kang Dong-joo (Young)
1 episode
Park Sung-kwang
as a bad customer
1 episode
Heo An-na
as a bad customer
1 episode
Gu Da-song
as Female student
1 episode
Kim Hye-eun
as Shin Hyeong-jeong
1 episode
Lee Do-yeop
as Captain Yoo In-sik
1 episode
하윤경
as Interviewee Ha Yoon-kyung
1 episode
주종혁
as Interviewee
1 episode
주현영
as Interviewee
1 episode
문상훈
as Interviewee
1 episode
임성재
as Interviewee
1 episode
김철윤
as North Korean Defector
2 episodes
Yoo Yu-jin
as Ri Bok-young
2 episodes
한지안
as Kim Kyung-soo
2 episodes
Kim Beom-seok
as Ko Eun-ho
1 episode
하동준
as Kang Sung-jin
1 episode
Kim Byung-hee
as Coast Guard
1 episode
Kim Seong-in
as Coast Guard
1 episode
류승수
as Ski Jumping Coach
2 episodes
강명주
as Deceased Person's Mother
2 episodes
Shin Hyeon-yong
as Arsonist
1 episode
Ahn Sang-woo
as Professor Park
1 episode
Shin Yi-Joon
as Yoon Seo Jeong [Young]
2 episodes
이효제
as Do In Bum [Young]
1 episode
이용이
as [Patient's mother]
1 episode
Ri Min
as [Truck driver involved in an accident]
1 episode
Choi Kyo-sik
as Taxi driver
1 episode
김혜준
as Jang Hyun-joo
4 episodes
Yu Eun-mi
as Ah Rin
1 episode
Lee Myung-haeng
as Choi Kyung Young
2 episodes
Kwon Hyuk-soo
as Ryu Woong Il [Minister]
3 episodes
Kwon Hyuk-soo
as Defense Minister Ryu Woong-il
1 episode
Kim Jun-won
as Auditor Choi
3 episodes
이강욱
as [Drunken driver]
3 episodes
박승태
as [Car crash victim]
1 episode
Kim Nam-jin
as Joo Hyuk's mother
1 episode
Park Young-soo
as [Healthcare center employee]
1 episode
Cha Jung-won
as Soo Jung
2 episodes
Kim Min-sang
as Oh Sung Jae [Reporter]
4 episodes
이채경
as [Patient's mother]
2 episodes
Kim Ji-eun
as [Yoon Wan's secretary]
3 episodes
Lee Jae-woo
as Ahn Woo Yeol
2 episodes
김수진
as [Patient's wife]
2 episodes
Cho Wan-ki
as Dr. Lee
1 episode
Gyeong Gi-hyeon
as [Station employee]
1 episode
Jung Bo-seog
as [Moon Jung’s father]
2 episodes
Jung Bo-seog
as Bae Moon-jung's Father
1 episode
Hwang Bo-Kwon
as [Station employee]
1 episode
Nam Jeong-woo
as [Geodae Hospital doctor]
1 episode
Shin Dong-ryeok
as Il Joong [Geodae Hospital doctor]
1 episode
Kim Jong Tae
as Professor Oh [CS Specialist]
2 episodes
Seo Jung-hoo
as [119 operator]
1 episode
Gu Bon-jin
as [Lieutenant commander]
1 episode
Seo Myung-chan
as [Military officer]
1 episode
Ahn Su-bin
as [TV reporter]
1 episode
Jung Young-hoon
as [Security]
1 episode
Im Jae Ha
as Seo Woo Jin [Young]
1 episode
Kim Soo-Min
as Soo Jin [Patient]
1 episode
진용욱
as [Soo Jin's father / Patient]
1 episode
Kim Ga-young
as [Soo Jin's mother]
1 episode
Kim Dong-hyun
as [Violent husband]
3 episodes
Cherish Maningat
as [Domestic abused victim]
3 episodes
Gwag Ja-hyeong
as Lee Jang Shik [Gangster #2]
2 episodes
이성우
as [Gangster #3]
3 episodes
Min Sang-woo
as [Chest patient]
1 episode
Kang Yoo-seok
as Joon Young [Prisoner]
1 episode
Kim Jin
as Choi Soon-young [Paramedic]
1 episode
우현주
as [Joon Young's mother]
1 episode
홍석연
as [Violent drunk man]
1 episode
Jeong Hyun-seok
as [Organ transplant doctor]
1 episode
Ji Hye-won
as Seo Se Young [Trainee nurse]
2 episodes
이지해
as [Pregnant bus passenger]
2 episodes
최윤설
as [Bus passenger]
2 episodes
Go Byeong-taek
as [Bus passenger with leg injury]
2 episodes
Park Joo-yong
as [119 paramedic]
2 episodes
Kim No-jin
as Jung Ga Young [Rape victim]
2 episodes
박기륭
as [Yoon Wan's associate]
2 episodes
Lee Yun-sang
as [Yoon Wan's associate]
2 episodes
박성일
as [Police officer in ER]
1 episode
장의돈
as [Local police officer]
1 episode
강석원
as Hyung Joon [Woo Jin's ex colleague]
1 episode
Cheon So-Ra
as [Nurse]
1 episode
송창규
as Song Chang Gyu
1 episode
Son Sang-yeon
as Kang Ik Joon [VIP Patient]
4 episodes
Son Sang-yeon
as Cabo Lightning
1 episode
Ahn Soo-ho
as [Tow yard worker]
2 episodes
Hwang Jae-yeol
as Detective Go
3 episodes
Hwang Jae-yeol
as Detective Go [Police detective]
2 episodes
Kim Seo-won
as Lee Dong Woo [Amputee]
1 episode
Jung Hyeon-jun
as [Dong Woo's son]
1 episode
Kang Hyung Suk
as [Ik Joon's brother]
1 episode
한상철
as [Hiker]
1 episode
Lee Young-sil
as [Patient's wife]
1 episode
박가영
as [Nurse]
1 episode
Yoon Cha-young
as Soo Yeon
1 episode
전진오
as Lee Dae Young [Minister Ryu's bodyguard]
3 episodes
오민애
as Ko Kyung-sook
8 episodes
Park Ha-joon
as Kim Han-wool
2 episodes
Im Young-joon
as Jae-hyun's Grandmother's Son
1 episode
Jo Eun-sol
as Jung Byeol
2 episodes
이지현
as Choi Soon-young's Mother
4 episodes
Oh Ji-hye
as Bae Yu-rim's Mother
2 episodes
지소영
as Bae Yu-rim
1 episode
Seong Jeong-seon
as Elderly Patient
1 episode
Jang Nam-yeol
as Bus Terminal's Cleaner (Chief Lee's Uncle-in-Law)
1 episode
우지현
as Jeon Kyung-soo
2 episodes
Kim Kyun-ha
as Choi Seok-gu
2 episodes
Park Ji-hoon
as First Lieutenant Kang Bo-seung
2 episodes
Yong-Jin
as Blood Transport Vehicle Driver
1 episode
Lee Bong-joon
as Choi Seok-gu's Friend
2 episodes
Jang Young-hyeon
as Heo Byung-bae
2 episodes
Cha Solomon
as Choi Seok-gu's Friend
2 episodes
Kim Jang-hwan
as News Announcer
1 episode
Lee Jin-hong
as Anesthetic Nurse
2 episodes
Lee Ki-seop
as Ko Kyung-sook's Aide
4 episodes
Lee Do-guk
as Chief Park of Field Control Team
4 episodes
조동인
as Math Academy Teacher
2 episodes
Cho In-woo
as Paramedic Choi Min-kyu
1 episode
Hwang Soo-min
as Reporter Song Hye-jin
1 episode
Lee Ga-yeon
as Seo Joo-young
2 episodes
Ha I-aan
as Student with Scraped Leg
2 episodes
유성민
as Student Park Jung-min
2 episodes
Hyun Gun-woo
as Unconscious Dance Academy Student
2 episodes
Baek Kyung-min
as Dance Academy Student
1 episode
Han Gi-joong
as Head of Jongseon
1 episode
Seo Ah-in
as Student Experiencing Dizziness
1 episode
Go Geon-ryeong
as Cardiac Patient
1 episode
Guk Joong-woong
as Patient Guardian who Complain
1 episode
변중희
as Patient with Dementia
2 episodes
Lee Seung-won
as Guardian of Patient with Wheelchair
1 episode
Lee Jang-ho
as Paramedic
1 episode
Jung Woo-jae
as Woo Sang-min
1 episode
Kim Ye-rin
as Cha Eun-jae (Young)
1 episode
Kim Moon-chan
as Fighting Patient
1 episode
Kim Il-hyeon
as Doctor
1 episode
Bae Bo-ram
as Doctor
1 episode
Shin Hye-ji
as Patient Min-jung
2 episodes
김재만
as Vomitting Patient
2 episodes
Hong Seong-gwan
as Paramedic
3 episodes
Kwak Jin
as Fighting Brother Patient
1 episode
김다흰
as Officer Choi
2 episodes
Han Kyu-won
as Yeom Jung-do
3 episodes
Park Seong-chan
as Anesthesiologist
3 episodes
Park Joo-yong
as Embolism Patient
1 episode
Park Hui-jeong
as Nurse
2 episodes
Kang Hae-ri
as Nurse
3 episodes
이주영
as Nurse
2 episodes
Kim Do-won
as Heo Ye-jun
1 episode
Kim Si-on
as Heo Ye-jun's Sister
1 episode
Lee Han-ju
as Angry Patient
1 episode
Ryu Ye-ri
as Jung In-soo's Wife
1 episode
반혜영
as Reporter
1 episode
Park Joon-sang
as Reporter
1 episode
Lee Dong-kyu
as Anchor
1 episode
Jeong Hyeon-woo
as Electrician
1 episode
Yoon Kwan-woo
as Detective
1 episode
정애화
as Villa resident
1 episode
Choi Sol-hee
as Villa resident
1 episode
Min Woo-gi
as Patient
1 episode
Jeong Doo-won
as Cramps patient's husband
1 episode
Han Ki-jang
as Firefighter
1 episode
김도형
as Cha Jin Man's chauffeur
1 episode
Oh Min-jeong
as Tteokbokki restaurant owner
2 episodes