Park Hae-soo
Kim Je-hyeok

Jung Kyung-ho
Lee Jun-ho

Krystal Jung
Ji-ho

Lee Kyoo-hyung
Looney

Choi Moo-seong
Min-cheol

Jeong Min-sung
Dr. Ko

Park Ho-san
KAIST

Kang Seung-yoon
Jean Valjean

Jung Woong-in
Lieutenant Paeng

Jung Hae-in
Captain Yoo

Kim Sung-cheol
Jailbird

Im Hwa-young
Kim Je-hee

Kang Ki-doong
Officer Song

Choi Seong-won
Mole Boy

Sung Dong-il
Chief Jo

Kim Kyung-nam
Lee Joon-dol

Jung Moon-sung
Captain Yoo's Brother

Ju Seok-tae
Wood workshop manager Yum