Gong Yoo as Ki-heon

Park Bo-gum as Seo Bok

Jo Woo-jin as Chief Ahn

Jang Young-nam as Dr. Im Se-eun

Park Byung-eun as Shin Hak-sun

Yeon Je-wook as Section Chief Heo

Kim Hong-pa as Bureau Director Bae Guk-jang

Lee Eon-jeong as Yoon Hyun-Soo

Na Kwang-hoon as Kim Walker

Kim Jae-geon as Chairman Kim Chun-oh

Andreas Fronk as John Kane

Paul Battle as Carl Anderson

Andrea Paciotto as Roberts

Yoon Sang-hoon as Dr. Song

Han Ji-hyun as Yong Ju

Maurice Turner Jr. as Foreign Mercenary

Baek Do-kyeom as Agent

Yun Ki-chang as Agent

Lee Yo-sung as Chasing Police Officer

Jo Yeon-ho as Young Min Gi-heon

Jo Jin-kyul as NIS Agent

Ahn So-ye as Crosswalk Kid

Kim Kyu-do as Seoin Researcher

Ki Hwan as Intelligence Bureau Team Leader

Joey Albright as Mercenary

Jung Mi-nam as Mercenary

Shin Sung-il as Mercenary

Cha Ji-won as Researcher

Park Sang-hoon as Intelligence Bureau Agent

Lee Sang-kyung as Intelligence Bureau Agent

Joung Young-sub as Intelligence Bureau Agent

Yun Hui-Cheol as Health Drink Store Owner

Yang Hee-woo as Gas Station Employee

Kim Sang-dong as Market Vendor

Lim Jae-min as Extraction Room Researcher

Kim Kye-hyung as SWAT Member

Kim Yong-jun as Man in Rear Car Dispute

Jin Si-won as Seoin Security Agent

Chae Yeon-jung as Ki-heon's Mother