Bae Yu-ram

as Welfare staff

as Self

as Lee Yu-jin

as [Youtuber]

as Park Chan Sung

as Dong-hwa

as Jung Ho-kyu (Eps 1, 2)

as Lecturer

as Hyeok Su

as Jo Hyun-soo

as 5-7

as Lee Young-chan

as Hacker Park

as Jesse

as Yoo-ram

as Quarantine officer

as Park Chan Young

as Kang Hae-soo

as Woo-seong

as Suk-pil

as Kim Gyu

as Cho Man-sik

as Detective Bae

as Park Jin-eon

as Han Seok Won [Mi Joo's ex-boyfriend]

as PD

as the dad

as Kim Yeong

as Public Official Moon

as Yong-min

as Seong-min

as Seong-min (segment 1)

as Team Leader Kang

as Helium Balloon High Schooler

as Detective Bae

as Ban Ji-deuk

as Young Hong-goo

as Choi Jae ho [Joon Seo's Seoul PD colleague]

as Kim Joo Hyung

as deer

as Jae-ho

as Park Moo Ha

as Kwon Kyung-Hoon

as Ahn Gye Dong [MRBI staff]

as Lee Jin Soo

as Ki-hwan

as Mr. Yoo [Assistant manager]

as Yong-sik

as PD [So Hyeong's colleague]

as Jin-woong

as Ryoo Il-ryong

as Jung-bae

as Toy N Joy staff

as [Gi Myeong's classmate]

as Oh Sang-shik (young)

as Jin-woo

as Halibut

as Dae-hyun

as Man-il

as Police Officer

as Seok Chan

as Student

as Student

as Self

as Self