Lin Lee

She is a short, conceited girl who uses a lot of different tactics to make herself more appealing to the eye, like wearing hair extensions, skin concealer, and plucking her eyebrows, among other things. She has developed a crush on Ghoon-Hahm, but he doesn't want anything to do with her and also barely even knows she exists. She is also the younger sister of Jin Lee, but the two weren't that close, even in their childhood. Source: Wikipedia