Mask Girl

고현정

Kim Mo-mi

Nana

Kim Mo-mi

이한별

Kim Mo-mi

안재홍

Ju Oh-nam

Yeom Hye-ran

Kim Kyung-ja

Kim Ga-hee

Yoo Sang-sun

신예서

Kim Mi-mo

Moon Sook

Sim Young-hee (Mo-mi's mother)

Kim Min-seo

Kim Ye-chun

김하늘

Kim Mi-mo (child)

손담비

Self (archive footage)

장원영

Executive manager Kim

정영기

Manager Oh

김현목

@TeddyLove

Park Keun-rok

@HandsomeMonk

박정화

Lee A-reum

최다니엘

Mr. Park

홍석빈

Police captain