Ran Tan is a girl Laala met in Episode 17 who has a talent for special effects make-up.
Ran is a girl who tries to be scary, but often fails due to her cute appearance. She is somewhat mischievous yet is a very nice girl and very energetic. Ran loves horror and scary things and because of that she wants to make that her profession and become a special effects artist in Hollywood (which she refers to as "Horriwood"). However, because she couldn't scare anyone, Ran had lost confidence in herself, but with Laala's help she got it back.
(Source: PriPara Wikia)