Choi Seung-hyun as Ri Myung-hoon / Kang Dae-ho

Han Ye-ri as Lee Hye-in

Yoon Je-moon as Cha Jeong-min

Cho Seong-ha as Moon Sang-cheol

Kim You-jung as Ri Hye-in

Lee Joo-sil as North Korean Spy

Jung Ho-bin as Big Dipper

Kim Sun-kyung as North Korean Spy

Kim Min-jae as North Korean Liaison

Park Sung-woong as Myung-hoon's Father

Kang Hanna as Waffle Store Part-time Worker

Yoo Jae-myung as Kim Sun-myung

Lee Shin-seong as Dong-seop

Um Tae-goo as Troubled Kid

Park Gil-su as Lottery Store Man

Hwang Yeon-hui as Teacher

Park Kyung-man as Glasses' Henchman