Hong Seok-yeon

as Jung-sik

as Mr. Gong

as Pasotr

as Uncle (Ep. 3: Unique Family)

as Deok-soo's Uncle

as Min-gi

as Pharmacist

as Worker on the bridge

as School Custodian

as Samgak Mansion Security Guard

as Kap-soo

as Mr. Jang

as Park Young-jo

as Mr. Kim

as Hwang

as Captain

as President Roh

as Factory Manager

as Choenmachong Manager

as Elderly Man 1

as Dr. Jang • 1 eps

as Opium Den Owner • 1 eps

as [Patient's father] • 1 eps

as Amusement Park security Guard • 1 eps

as Patient Park Deuk-gu • 2 eps

as [Cheol Wook's uncle] • 1 eps

as Violent Drunk Man • 1 eps