Yim Si-wan
Lee Han-wool / Mantis

Park Gyu-young
Shin Jae-yi

Choi Hyun-wook
Benjamin Jo

Bae Gang-hee
Yang Soo-min

Hwang Sung-bin
Puma Lee

Yoo Su-bin
Kim Dong-yeong

Jeon Bae-soo
Nam Bae-soo

Jo Woo-jin
Dok-go

Sul Kyung-gu
Cha Min-gyu

Jeon Do-yeon
Gil Bok-soon

Yang Dong-geun
Gwang-cheon / Bi-cheon

Kim Joon-bae
Mr. Bae

Park Kang-seop
Manager Yoo

Do Yu
Secretary

Ahn Seong-bong
M.K Information Desk Staff

Esom
Cha Min-hee (archive footage)

Koo Kyo-hwan
Han Hee-sung (archive footage)

Kim Seung-o
Shin (archive footage)

Lee Yeon
Kim Young-ji (archive footage)

Choi Byung-mo
Hyun-chul (archive footage)

Kim Ki-cheon
Su-guen (archive footage)

Park Kwang-jae
Gwang-man (archive footage)

Jang In-sub
Yoon-sub (archive footage)

Kim Chil-doo
Old man

Shin Sung-il
Protester

Ha Seon-jae
Bar friend

Ryu Seong-cheol
Ssang-bong

Oh Chi-woon
Cleaner

Han Sang-kyung
Airport Killer