김선영
— Sung Ji-soo
홍경인
— Choi Joon-sang
Lee Jeong-woo
— Kyeong-cheol (경철)
박세진
— Hye-ran (혜란)
이설구
— Detective Kim (김형사)
Lee Hyun-ji 李賢智
— So-won (소원)
Kim Young-woong
— Dong-cheol (동철)
Kang Seung-beom
— Geon-woo (건우)
Yoon Ji-ah
— Nurse Yoon (윤간호사)
Kim Yoo-nah
— Young Ji-soo (어린지수)
조범근
— Young Kyeong-cheol (어린경철)
Im Mi-joo
— Mid-point Ji-soo (중간지수)
Nam Dong-hyeon
— Mid-point Kyeong-cheol (중간경철)
유영준
— Mid-point Ji-hoon (중간지훈)
Park Sol
— Announcer (아나운서)
Park Jae-hoon
— Patient 1 - Special appearance (환자1)
이유진
— Patient 2 - Special appearance (환자2)
지대한
— Patient 3 - Special appearance (환자3)
Chunja
— Patient 4 - Special appearance (환자4)