Official website: http://www.imbc.com/broad/tv/drama/monster/index.html
Casts
Kang Ji-hwan
Lee Kook-Chul / Kang Ki-Tan
Sung Yu-ri
Oh Soo-Yeon
Park Ki-woong
Do Gun-Woo
Claudia Kim
Yoo Sung-Ae
Lee Gi-kwang
Lee Kook-Chul / Kang Ki-Tan (young)
Lee Yul-eum
Oh Soo-Yeon (young)
Jung Bo-seog
Byun Il-Jae
Park Young-kyu
Do Choong
Cho Bo-ah
Do Shin-Young
Lee Duck-hwa
Hwang Jae-Man
