Doctor John

Ji Sung

Cha Yo-Han

Lee Se-young

Kang Shi-Young

Lee Kyoo-hyung

Son Seok-Ki

Kim Hye-eun

Tae-Kyung

Shin Dong-mi

Chae Eun-Jung

Jeon No-min

Kang Yi-Soo

Uhm Hyo-seop

Kang Yi-Moon

Oh Seung-hyun

Min Joo-Kyung

Jeong In-gi

Jung-Nam

Hwang Hee

Lee Yoo-jun

Jung Min-ah

Kang Mi-Rae

Chun Young-min

Lee Da-hae

Kwon Hwa-woon

Heo Joon

Son San

Hong Yun Jin

Lee You-mi

Na Kyung Ah

Kim Yeong-hoon

Han Myung Oh

Jeong Jae-seong

Kwon Suk

Oh Hyun-Joong

Kim Won Hee

Yoon Joo-sang

Lee Won Gil

Jung Kyung-soon

Yoo Joon's mother

Park Jin-young

Nurse

Kim Mi-hye

Questioner

Noreen Joyce Guerra

Flight attendant

Moon Hak-jin

Kim Jung Ho [3rd-year Resident Ophthalmology]

Jang Hee-soo

Professor of Anesthesiology and Pain Medicine

Yoon Chan-young

Lee Ki Suk (A CIPA patient)

Oh Yoo-na

Yoo Ri Hye [former actress who suffers from neuroblastoma]

Yoon Joo-sang

Lee Won Gil [Former Minister of Health and Welfare]

Lim Dong-jin

Shim Joon Chul

고용화

Lee Ki Suk's mother

Lee Yo-seong

Cha Yo Han's father

Jung Ji-hoon

Min Sung [Yoo Ri Hye's son]

Park Si-wan

Cha Yo Han (child)