Lee Je-hoon as Dong-gu

Jo Woo-jin as Dr. Jones

Shin Hye-sun as Se-hee

Im Won-hee as Sabdari

Song Young-chang as Sang-gil

Ju Jin-mo as Man-gi

Lee Sung-wook as Gwang-cheol

Park Se-wan as Hye-ri

Park Jin-woo as Squad Chief Oh

Lee Jun-hyeok as Antique Shop Owner

Heo Sung-tae as Vipers' Leader

Kim Joo-ryoung as Broker

Lee Sang-hee as Janitor

Yoon Yeong-gyun as Vipers Gang Member

Yoon Byung-hee as Mr. Park

Kim Ha-young as Massage Staff

Yun Se-hyun as Audience 2 at Osong Museum

Kim Woo-hyun as Gang Member

Song Hyeong-su as Secretary

Yoon Young-kyun as Viper gang member 3

Yang Mi-seon as Chinese customer 2