배유람

Welfare staff

Self

Lee Yu-jin

[Youtuber]

Park Chan Sung

Dong-hwa

Jung Ho-kyu (Eps 1, 2)

Lecturer

Hyeok Su

Jo Hyun-soo

5-7

Lee Young-chan

Hacker Park

Jesse

Yoo-ram

Quarantine officer

Park Chan Young

Kang Hae-soo

Woo-seong

Suk-pil

Kim Gyu

Cho Man-sik

Detective Bae

Park Jin-eon

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

PD

the dad

Kim Yeong