Ha Jung-woo as Gang-rim

Cha Tae-hyun as Kim Ja-hong

Ju Ji-hoon as Hae Won-maek

Kim Hyang-gi as Deok-choon

Lee Jung-jae as King Yeomra

Kim Dong-wook as Kim Su-hong

Ye Su-jeong as Ja-hong's Mother

Oh Dal-su as Prosecutor

Im Won-hee as Prosecutor

Seong Yu-bin as Young Kim Ja-hong

Goo Seung-hyun as Young Kim Su-hong

Lee Jun-hyuk as First Lieutenant Park Moo-sin

Doh Kyung-soo as Private Won Dong-yeon

Jung Hae-kyun as Byeon-seong / God of Murder Hell

Kim Hae-sook as Cho-gang / God of Indolence Hell

Kim Su-an as Tae-san / God of Lie Hell

Lee Kyung-young as Oh-gwan / God of Injustice Hell

Kim Ha-neul as Song-je / God of Betrayal Hell

Jang Gwang as Jin-gwang / God of Violence Hell

Kang Da-hyeon as Ji-yeon

Yu Jun-sang as Trapped Firefighter

Nam Il-woo as Heo Choon-sam

Jung Ji-hoon as Heo Hyun-dong

Kim Soo-ro as Cat Girl's Father

Na Chul as Club Man

Tae Won-seok as Military Police

Oh Hee-jun as Interpreter Soldier

Kim Tae-jun as Firefighter

Lim Cheol-soo as Firefighter

Hong In as Firefighter

Kim Min-jong as Grim Reaper

Don Lee as Sung-ju / Household God

Kim Geu-lim as First Lieutenant Park's wife