Kim Ki-doo

as Secretary Go

as Jeong-hoon

as Tae-ho

as Dae-geun (Youth Association President)

as Han Deok-soo

as Park Young-choon

as PE teacher

as Jun-gil

as Hwang Geum-dong

as Joo Yong-joo

as Heungsinso CEO

as Man-deok

as Ahn Mu-in

as Duty officer

as Kang Sang-gu

as Bang Deok

as Gomchi

as Gi-doo

as Chang-gil

as Self

as Park Joon-Yong

as Goo-dol

as Kim Gi-du

as Choi Maeng-Ja

as Hong Chul-Soo

as Miami

as Baek Gong-ki

as Kim Ik-hong

as Man at the men's restroom

as Seo Daewon

as Grim Reaper

as Jin Kook

as Bong Soo

as Kim Sang-Sun

as hotel manager

as Nam Sang-Bok

as Cheon Man

as Pyung-chang's Classmate #3