Killer Girl K

Han Geu-ru

as

Cha Yeon-jin

Kim Jung-tae

as

Yoo Sung-ho

Park Hyo-ju

as

Min Ji-young

Baek Do-bin

as

Choi Tae-young

Kim Roi-ha

as

Jang Se-wook

Jeon Mi-seon

as

Cha In-sook

Jeon Kuk-hwan

as

Kwon Do-hwan

Kim Dong-jun

as

Go Young-min

Bae Noo-ri

as

Nal Na Ri

Kim Sa-hee

as

Scientist