Yim Si-wan

Character: Lee Han-wool / Mantis

Park Gyu-young

Character: Shin Jae-yi

Choi Hyun-wook

Character: Benjamin Jo

Bae Gang-hee

Character: Yang Soo-min

Hwang Sung-bin

Character: Puma Lee

Yoo Su-bin

Character: Kim Dong-yeong

Jeon Bae-soo

Character: Nam Bae-soo

Jo Woo-jin

Character: Dok-go

Sul Kyung-gu

Character: Cha Min-gyu

Jeon Do-yeon

Character: Gil Bok-soon

Yang Dong-geun

Character: Gwang-cheon / Bi-cheon

Kim Joon-bae

Character: Mr. Bae

Park Kang-seop

Character: Manager Yoo

Do Yu

Character: Secretary

Ahn Seong-bong

Character: M.K Information Desk Staff

Seo Ji-oh

Character: Leaflet

Esom

Character: Cha Min-hee (archive footage)

Koo Kyo-hwan

Character: Han Hee-sung (archive footage)

Kim Seung-o

Character: Shin (archive footage)

Lee Yeon

Character: Kim Young-ji (archive footage)

Choi Byung-mo

Character: Hyun-chul (archive footage)

Kim Ki-cheon

Character: Su-guen (archive footage)

Park Kwang-jae

Character: Gwang-man (archive footage)

Jang In-sub

Character: Yoon-sub (archive footage)

Hwangbo Jung-il

Character: Bar owner

Park Seok-won

Character: Tatto man

Hwang Jin-woon

Character: Young Han-wool

Park Gyu-bin

Character: Young Jae-yi

Kim Chil-doo

Character: Old man

Shin Sung-il

Character: Protester

Ha Seon-jae

Character: Bar friend

Ryu Seong-cheol

Character: Ssang-bong

Oh Chi-woon

Character: Cleaner

Aerok Kim

Character: Tatto Killer

Jang In-seo

Character: JB Enter. Killer

Han Sang-kyung

Character: Airport Killer