Mask

Boo Sung-chul

Director

Kim Byeong-Ok

President Sim Bong-seol

Jeon Gook-hwan

Chairman Choi Doo-hyun

Jung Dong-hwan

Byun Dae-sung

Park Joon-geum

Song Seol-hee

Chang-hoon Seong

Seok-hoon's secretary

Hoya

Byun Ji-hyuk

Jong-nam Lee

Lee Jung-sun

Seo Hye-jin

Soo-bin

Yong-soo Park

Seo Jong-hoon

Soo Ae

Byun Ji-sook

Soo Ae

Seo Eun-ha

Ju Ji-Hoon

Choi Min-woo

Jeong-hun Yeon

Min Seok-hoon

Yoo In-young

Choi Mi-yeon

Mi-kyeong Yang

Kang Ok-soon

Amy Aleha

Scientist

Jin-mo Joo

Professor Kim

Hwang Seok-jeong

Hwang Mal-ja

Ho-Chul Choi

Writer