이제훈

Dong-gu

조우진

Dr. Jones

신혜선

Se-hee

임원희

Sabdari

송영창

Sang-gil

주진모

Man-gi

이성욱

Gwang-cheol

박세완

Hye-ri

박진우

Squad Chief Oh

이준혁

Antique Shop Owner

허성태

Vipers' Leader

김주령

Broker

이상희

Janitor

윤영균

Vipers Gang Member

윤병희

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

Yang Mi-seon

Chinese customer 2

우강민

Gwang-cheol's gang member