J
Jo Beom-geun
Young Kyeong-cheol (어린경철)
N
Nam Dong-hyeon
Mid-point Kyeong-cheol (중간경철)
Park Jae-hoon
Patient 1 - Special appearance (환자1)
Lee Yoo-jin
Patient 2 - Special appearance (환자2)
Ji Dae-han
Patient 3 - Special appearance (환자3)
C
Chunja
Patient 4 - Special appearance (환자4)