가면

Soo Ae

Byun Ji-sook / Seo Eun-ha

주지훈

Choi Min-Woo

연정훈

Min Seok-hoon

유인영

Choi Mi-Yeon

정동환

Byun Dae-sung

양미경

Kang Ok-soon

이호원

Byun Ji-hyuk

전국환

Chairman Choi Doo-hyun

Jo Yoon-woo

Oh Chang-soo

박준금

Mrs. Song

Jo Han-sun

Kim Jung-tae

신동훈

[Big guy]

Amy Aleha

[Scientist]

Lee Sung-deuk

Byun Ji Sook's high school classmate

Lee Yoon-jeong

Byun Ji-sook [Young]