Mask Girl

Mask Girl is a 2023 South Korean black comedy crime thriller television series written and directed by Kim Yong-hoon, and starring Lee Han-byeol, Nana, Go Hyun-jung, Ahn Jae-hong, and Yeom Hye-ran. It is based on the Naver webtoon of the same name by Mae-mi and Hee-se, which was published between 2015 and 2018. It was released on Netflix on August 18, 2023.

Synopsis
Kim Mo-mi, an office worker who is insecure about her looks, becomes a masked internet personality by night—until a chain of unexpected, ill-fated events overtakes her life.

Main

 * Lee Han-byeol as Kim Mo-mi/Mask Girl (in 2009, before surgery)
 * Nana as Kim Mo-mi/A-reum (after plastic surgery)
 * Go Hyun-jung as Kim Mo-mi/No. 1047 (in 2023)
 * Ahn Jae-hong as Joo Oh-nam: an ordinary office worker who is Mo-mi's co-worker and Mask Girl's regular viewer whom he admires
 * Yeom Hye-ran as Kim Kyung-ja: Oh-nam's overprotective mother who seeks revenge against Mo-mi

Supporting

 * Park Jung-hwa as Lee A-reum: Mo-mi's colleague
 * Choi Daniel as Park Gi-hoon: Mo-mi's boss
 * Kim Min-seo as Kim Ye-chun: Mo-mi's best friend
 * Moon Sook as Sim Young-hee: Mo-mi's mother
 * Shin Ye-seo as Kim Mi-mo: Oh-nam and Mo-mi's daughter
 * Han Jae-yi as Kim Chun-ae: Mo-mi's best friend
 * Kim Ga-hee as Yoo Sang-soon: Mo-mi's colleague
 * Lee Soo-mi as Ahn Eun-suk
 * Jang Won-young as Manager Kim
 * Lee Seon-hee as Chief Oh: a prison warden
 * Lee Jun-young as Choi Bu-yong: Chun-ae's boyfriend in a special appearance