Since I only knew Goo Hara from Invincible Youth, I only recently saw all the KARA girls for the first time. The first video I saw was Mr, but she didn't strike me in any special way then because I was focusing on Hara too much, haha. However, when I saw the Wanna MV, she struck me as really interesting (due to her eyes) and since then I've been looking at her more.
I think she might possibly become my favorite KARA girl :3