Jinyoung as Joo Il-woo / Joo Wol-woo

Kim Young-min as Cho Soon-wu

Kim Dong-hwi as Son Hwan

Song Geon-hee as Moon Ja-hoon

Heo Dong-won as Han Hee-sang

Hwang In-sung as Go Bang-cheon

Seo Jin-won as Choi Noo-ri

Kim Jeong-jin as Baek Young-jun

Park Dong-il as Detective

Yun Yoo-sun as Ja-hoon's Mother

Jung Hae-kyun as Lawyer

Son Byeong-uk as Demolition Captain

Jong Ho as Yong-cheol

Kim In-chul as Task Leader