Die Bad is an inventive feature made up of four distinct episodes, each with their own style. With their criss-crossing characters and themes, they add up to a fairly comprehensive account of the causes and effects of male aggression, both tribal and individual.
| Actor | Role |
|---|---|
 Ryoo Seung-wanSeok-whan | Seok-whan |
 Ryoo Seung-bumSang-whan | Sang-whan |
| PPark Seong-binSeong-bin | Seong-bin |
 Im Won-heeDetective Lee | Detective Lee |
 Jung Jae-youngSeong-bin's Older Brother | Seong-bin's Older Brother |
 Kim Su-hyunHyun-soo | Hyun-soo |
 An Kil-kangSeok-hwan's Senior | Seok-hwan's Senior |
| BBae Joong-sikTae-hoon | Tae-hoon |
 Ki Joo-bongAuto Repair Boss | Auto Repair Boss |
 Chung Chung-hoonSenior Employee | Senior Employee |
| KKim Do-hyunWaitstaff | Waitstaff |
 Cheon Seong-hoonDong-su | Dong-su |
| Jung Jae-youngSeong-bin's brother | Seong-bin's brother |
 Koh In-baeTeacher | Teacher |
 Jang Kun-jaeChang-jun | Chang-jun |
 Sin Jae-myeongTteol-pal | Tteol-pal |
| KKang Myeong-jaSeong-bin's mother | Seong-bin's mother |