Shin Cheol-jin

as School Custodian

as Principal Kim

as Elderly Man in Rehab

as Grandfather

as Shin Young-hoon

as Mr. Park

as Mr. Yoon

as Guy

as Professor

as dean

as Mayor

as Manager Park

as Park

as Chinese teacher

as Investigator

as Security Guard

as Real Estate Mister

as Kim Young-pal (old)

as Kim Man-cheol