As much as we love Grey's Anatomy, there are just those characters who get right under your skin. But, it sort of brings Grey's fans together, too. So, here are 13 Grey's Characters we love to hate! Do you agree with our picks? Addison Montgomery, Greys Anatomy, April Kepner, Sadie Harris, Eliza Minnick, Ellis Grey, George O'Malley. Greys actors we love to hate. Greys most hated doctors. Greys Seattle.