Pemeran Yong Pal

Joo Won (주원)

as Yong Pal / Kim Tae Hyun

Pemeran Utama

Kim Tae Hee

as Han Yeo Jin

Pemeran Utama

Jo Hyun Jae

as Han Do Joon

Pemeran Utama

Chae Jung An (채정안)

as Lee Chae Yeong

Pemeran Utama

Jung Woong In

as Chief Surgeon Lee

Pemeran Pembantu

Bae Hae Seon

as Ms. Hwang

Pemeran Pembantu

Jo Bok Rae

as Park Tae Yong

Pemeran Pembantu

Stephanie Lee

as Park Cynthia / Shin Sa Ah

Pemeran Pembantu

Kim Mi Kyung

as [Surgery head nurse]

Pemeran Pembantu

Oh Na Ra

as [ICU Head Nurse]

Pemeran Pembantu

Ahn Se Ha

as Hyun Man Shik [Tae Hyun's loan shark]

Pemeran Pembantu

Yoo Seung Mok

as Detective Lee

Pemeran Pembantu

Jo Hwi

as Detective Kim

Pemeran Pembantu

Moon Ji In

as Nurse Song

Pemeran Pembantu

Choi Joon Yong

as [Tae Hyun's Father]

Pemeran Pembantu

Song Kyung Chul

as Doo Cheol [Mob Boss]

Pemeran Pembantu

Park Hye Soo (박혜수)

as Kim So Hyun [Tae Hyun's younger sister]

Pemeran Pembantu

Yoo Joon Hong

as [Resident Doctor]

Pemeran Pembantu

Im Hwa Young

as Han Song Yi [Resident Doctor]

Pemeran Pembantu

Kim Dong Seok

as Kim Do Yeon [Resident Doctor]

Pemeran Pembantu

Nam Myeong Ryeol

as [Chae Yeong's Father & Vice President of Hanshin Hotels]

Pemeran Pembantu

Jang Gwang

as Go Seung Hoon [President of Hanshin Construction]

Pemeran Pembantu

Choi Byung Mo

as Min [Chief Secretary of Hanshin Group]

Pemeran Pembantu

Cha Soon Bae

as Doctor Shin

Pemeran Pembantu

Park Hyun Sook

as Ms. Lee [Head of Housekeeping]

Pemeran Pembantu

Park Pal Young

as [Director of Hanshin Hospital]

Pemeran Pembantu

Jung Dong Gyu

as Choi Cheol Min [CEO of Hanshin Precision]

Pemeran Pembantu

Min Jin Woong

as Lee Sang Chul [Bodyguard]

Pemeran Pembantu

Jang Seo Kyung

Pemeran Pembantu

Kwon Tae Won

as [Hanshin Group's Chief Bodyguard]

Pemeran Pembantu

Lee Gyu Sub

as [Mobster]

Pemeran Pembantu

Kim Ho Chang

as Han Yoo Jin [Hanshin Group Employee]

Pemeran Pembantu

Lee Yang Hee

as [Dae Jeong Group Employee]

Pemeran Pembantu

Ha Soo Ho

as Kyeong Ho [Team lead]

Pemeran Pembantu

Kim Gwang In

as Lee Seung Hoon [Manager]

Pemeran Pembantu

Jin Seo Yul

as So Hyun [Young]

Pemeran Pembantu

Jung Kyung Ho

as Do Cheol Soo Ha

Pemeran Pembantu

Kim Na Woon

as [Tae Hyun's mother]

Bintang Tamu

Choi Shang

as Choi Sung Hoon [Yeo Jin's late boyfriend]

Bintang Tamu

Im Kang Sung

as Cha Sae Hoon [Hallyu star] (Ep.3-4)

Bintang Tamu

Park Young Soo

as [Head of Hanshin Hospital Administration] (Ep. 2)

Bintang Tamu

So Hee Jung

as [Nun] (Ep.8-9)

Bintang Tamu

Kim Dan Yool

as Han Do Joon [Young] (Ep.9)

Bintang Tamu

Park Isiah

as Ali (Ep.9-10)

Bintang Tamu

Go In Beom

as Choi [CEO of Dae Jeong Group / Sung Hoon's father] (Ep. 15-16)

Bintang Tamu

Kim Yoon Chan

as [Sang Chul's senior]

Bintang Tamu

Jung Yoon Suk

as Kim Tae Hyun [Young]

Bintang Tamu

Kang Ji Woo

as Yeo Jin [Child]

Bintang Tamu

Kim Jae Yeong

as Yong Pal

Bintang Tamu

Kim Bo Jung

as Kim Yeong Mi [Employee of Hanshin Electric]

Bintang Tamu

Kim Jeong Hak

as Dr. Kim [Neurologist at Hanshin Hospital] (Ep.14-15)

Bintang Tamu

Choi Hong Il

as [Chief of Police]

Bintang Tamu

Kim Jae Il

Bintang Tamu

Choi Na Moo

as Nurse Jo

Bintang Tamu

Bae Jin Woong

as [Mobster]

Bintang Tamu

Jung Suk Yong

as [Anesthesiologist at Hanshin Hospital]

Bintang Tamu

Kim Kyung Ryong

as [Member of Security]

Bintang Tamu

Yannie Kim

as [Pregnant Lady] (Ep.9)

Bintang Tamu

Kim Ik Tae

as Han Tae Seob [CEO of Hanshin Chemistry] (Ep. 11)

Bintang Tamu

Choi Dae Sung

as [Operator at Proton Center] (Ep. 4)

Bintang Tamu

Kwon Byung Joon

Bintang Tamu

Ham Jin Sung

as [Bodyguard]

Bintang Tamu

Bang Dae Han

as [Ali's father]

Bintang Tamu

Park Sook Myung

as [VIP patient]

Bintang Tamu

Park Dae Kyu

Bintang Tamu

Hwang Dong Hee

as [Bodyguard]

Bintang Tamu

Kim Jung Seok

as [Manager of Proton Center]

Bintang Tamu

Cheon So Ra

Bintang Tamu

Shin Soo Ho

Bintang Tamu

Jung Yun Ha

as [VIP's daughter]

Bintang Tamu

Oh Jin Suk

Sutradara

Jang Hyuk Rin

Screenwriter