이제훈
— Dong-gu
Woo-jin Jo
— Dr. Jones
Shin Hye-sun
— Se-hee
Im Won-hee
— Sabdari
Song Yeong-chang
— Sang-gil
주진모
— Man-gi
Lee Sung-wook
— Gwang-cheol
Park Se-wan
— Hye-ri
Park Jin-woo
— Squad Chief Oh
Lee Jun-hyeok
— Antique Shop Owner
Heo Sung-tae
— Vipers' Leader
Ju-Ryoung Kim
— Broker
Lee Sang-hee
— Janitor
윤영균
— Vipers Gang Member
Yoon Byung-he
— Mr. Park
Kim Ha-young
— Massage Staff
윤세현
— Audience 2 at Osong Museum
Kim Woo-hyun
— Gang Member
Song Hyeong-su
— Secretary
윤영균
— Viper gang member 3
양미선
— Chinese customer 2
우강민
— Gwang-cheol's gang member