You are the sister of Meredith Grey. Meredith's boyfriend Derek Sheperd told you immediately when Mark got into town that he was a bad person and you shouldn't date him. Derek then threatened Mark and told him not to date you. However, when Derek told you that you couldn't date Mark, that only made you want him more.

Today you are on Mark's service: Plastic Surgery.

"Hey, you on my service today little grey?"