Pemeran Monster

Kang Ji Hwan

as Kang Ki Tan

Pemeran Utama

Sung Yoo Ri

as Oh Soo Yeon

Pemeran Utama

Park Ki Woong

as Do Gun Woo

Pemeran Utama

Claudia Kim

as Yoo Sung Ae

Pemeran Utama

Zin Tae Hyun

as Do Kwang Woo

Pemeran Pembantu

Jeong Bo Seok

as Byun Il Jae

Pemeran Pembantu

Lee El

as Ok Chae Ryung

Pemeran Pembantu

Lee Deok Hwa

as Hwang Jae Man

Pemeran Pembantu

Kim Bo Yeon

as Hwang Gwi Ja

Pemeran Pembantu

Jo Bo Ah (조보아)

as Do Shin Young

Pemeran Pembantu

Kim Hye Eun

as Hwang Ji Soo

Pemeran Pembantu

Park Young Gyu

as Do Chung

Pemeran Pembantu

Go Yoon

as Cha Woo

Pemeran Pembantu

Jung Woong In

as Moon Tae Kwang

Pemeran Pembantu

Kim Won Hae

as Min Byeong Ho

Pemeran Pembantu

Kang Han Saem

as Lee Soo Tak

Pemeran Pembantu

Cha Kwang Soo

as Go Hae Sool

Pemeran Pembantu

Shin Ju Hwan

as Park Hae Il

Pemeran Pembantu

Jin Ye Sol

as Park So Hee

Pemeran Pembantu

Lee Chae Mi

as Ye Bin [Choi Jin Hye's Daughter]

Pemeran Pembantu

Lee Ah Hyun

as Choi Jin Hye

Pemeran Pembantu

Park Hoon (박훈)

as Oh Choong Dong

Pemeran Pembantu

Jung Soon Won

as Cha Dong Soo

Pemeran Pembantu

Song Kyung Chul

as Kong Bok Shin [Butler]

Pemeran Pembantu

Jung Sung Mo

as Uh Kyung Suk

Pemeran Pembantu

Jung Kyu Soo

as So Gil Doo

Pemeran Pembantu

Go In Beom

as Kim Dae Woo

Pemeran Pembantu

Shin Seung Hwan

as Yang Dong Yi

Pemeran Pembantu

Lee Seung Hyung

as Secretary Ahn

Pemeran Pembantu

Lee Moon Jung

as Hong Nan Jung

Pemeran Pembantu

Lee Kyung Young

Pemeran Pembantu

Sung Ki Yoon

as Professor Jin

Pemeran Pembantu

Lee Gyu Sub

as [Henchman]

Pemeran Pembantu

Lee Seung Hun

Pemeran Pembantu

Kim Ji Sung

as [Child from the shop]

Pemeran Pembantu

Kim Young Woong

as Yeom Hyeong Gu

Pemeran Pembantu

Yoon Yong Joon

as Do Chi

Pemeran Pembantu

Uhm Hye Soo

as Cha Jung Eun

Pemeran Pembantu

Kim Min Seo

as Aide

Pemeran Pembantu

Lee Woon San

as Prosecutor Park

Pemeran Pembantu

Lee Suk Koo

Pemeran Pembantu

Kim Tae I

as Wi Ryong

Pemeran Pembantu

Lee Ga Ryeong

as Hong Ee Jin

Pemeran Pembantu

Lee Gi Kwang (이기광)

as Lee Kook Chul [Young]

Bintang Tamu

Lee Yeol Eum (이열음)

as Cha Jung Eun [Young]

Bintang Tamu

Sung Ji Ru

as Ko Ju Tae

Bintang Tamu

Bae Jong Ok

as Jung Man Ok (Ep. 1-2)

Bintang Tamu

Chen Bo Lin

as Michael Chang

Bintang Tamu

Yang Hee Myung

as [Henchman]

Bintang Tamu

Kim Jin Woo

as Park Je Soo [Do Shin Young's blind date](Ep.34)

Bintang Tamu

Carson Allen

as Jessica [Gun Woo's classmate from US]

Bintang Tamu

Joey Albright

as John Rems

Bintang Tamu

Kim Myung Soo

as [Jung Eun and Dong Soo's father]

Bintang Tamu

Lee Won Jong

as Na Do Kwang [Doctor]

Bintang Tamu

Nam Gi Ae

as [Gook Chul's mother]

Bintang Tamu

Nam Myeong Ryeol

as Lee Joon Shik [Kook Chul's father]

Bintang Tamu

Choi Jong Won

as Jo Ki Ryang

Bintang Tamu

Kim Se Ah

as Mo Kyung Shin

Bintang Tamu

Hong Seung Beom

as Team Leader Park

Bintang Tamu

Min Jung Sup

Bintang Tamu

Seo In

as [Himself]

Bintang Tamu

Jeong Soo Hyun

Bintang Tamu

Ahn Won Jin

Bintang Tamu

Kang Dong Yup

Bintang Tamu

Yeo Woon Bok

Bintang Tamu

Kwon Hyuk Soo

Bintang Tamu

Son Gun Woo

as [Researcher]

Bintang Tamu

Choi Dae Sung

Bintang Tamu

Kim Tae Young

Bintang Tamu

Lee Chang

as [Dodo Hotel Manager]

Bintang Tamu

Kim Gwang In

Bintang Tamu

Hong Seo Joon

Bintang Tamu

Jung Hyun Seok

as [Doctor]

Bintang Tamu

Geum Kwang San

as [Loan shark]

Bintang Tamu

Kim Yoon Tae

Bintang Tamu

Kang Shin Chul

Bintang Tamu

Park Sang Hwi

as [Army Lieutenant]

Bintang Tamu

Cha Sang Mi

Bintang Tamu

Jung Myung Kyun

as [Breechblock agent]

Bintang Tamu

Won Geun Hee

Bintang Tamu

Seol Chang Hee

Bintang Tamu

Sung Nak Kyung

Bintang Tamu

Jeon Hae Ryong

Bintang Tamu

Jung Myung Joon

Bintang Tamu

Ham Jin Sung

as [Prison guard]

Bintang Tamu

Cha Soon Hyung

as Liu

Bintang Tamu

Sul Ji Yoon

Bintang Tamu

Kim Jang Woo

Composer

Joo Sung Woo

Sutradara

Jang Young Chul

Screenwriter

Jung Kyung Soon

Screenwriter

Yoon Jong Won

as [Bodyguard]

Bit part