- Sul Kyung-gu
- Byung-su
- Kim Nam-gil
- Tae-ju
- Kim Seol-hyun
- Eun-hee
- Oh Dal-su
- An Byeong-man
- Hwang Seok-jeong
- Jo Yeon-joo
- Gil Hae-Yeon
- Maria
- Lee Byung-joon
- Poetry Instructor
- Kim Hye-yoon
- young Maria
- Eom Ji-man
- Sashimi Restaurant Owner
- Kim Joo-hun
- Undercover Detective
- In-Gum Jung
- Kim Byeong-soo's father
- Jae-Ik Lee
- Police academy student
- Saeromi Lee
- Cat woman
- Shin Rin-ah
- Eun-hee (child)
- Ki-jun Shin
- Kim Byeong-soo (teen)
- Lee Tae-hyung
- Undercover detective #1
- Choi Yoo-Song
- Byeong-soo's mother
