Bác Sĩ Ma

Sung Dong Il

Tess / Oh Joo Myung

Tae In Ho

Han Seung Won

Park Cheol Min

Ban Tae Sik

Ko Sang Ho

Ahn Tae Hyun [Thoracic Surgery Fellow]

Ahn Tae Hwan

Kim Jae Won [Thoracic Surgery Resident]

Kim Jae Yong

Lee Sun Ho [Thoracic Surgery resident]

Son Ji Na

Sung Mi Ran [Seung Tak's mother]

Myung Gye Nam

Chairman Ko Jae Sik [(Seung Tak's grandfather]

Seo Ji Young

Ko Sung Hye

Lee Tae Sung

Jang Min Ho [Chunmyung Group]

Yoon So Hee

Im Bo Mi [Coma ghost]

Choi Seok Won

Choi Hoon Kil [Coma ghost]

Han Seung Hyun

Hwang Kook Chan [Coma ghost]

Lee Moon Soo

Jang Kwang Duk [Coma ghost / Chunmyung Group Chairman]

Hwang Seok Jeong

Ms. Kim [Cleaner]

Park So Eun

Nurse Jung

Baek Ik Nam

Kim Hyun Ki [Doctor]

Jung Jong Hoon

Jung Chan Min

Ma Jung Pil

Han Young Ho [Thoracic Surgeon]

Shin Soo Hang

[Doctor]

Kim Jung Hwan

[Doctor]

Park Sang Eun

[Resident] (Ep. 2)