Kim Seul-gi

as Ko Taeng-ja / "Black Finger"

as Han Se-yeon

as Yeo Ha-kyung

as Kim Mi-Kyung

as Seo Bo-Mi

as Mo Nam-hee

as Ko Mi-Ryeo

as Jang Dan-bi / Go Sam

as Shin Soon-ae

as Jong Man

as Yoon Sol

as Ahn Hye-young

as Deputy manager of contents-development team