Chyler Leigh – Lexie Grey Then
Lexie, Meredith's half-sister, wanted a close relationship with her. She had a tumultuous on-and-off romance with Mark Sloan, who fathered a child with Callie Torres.
In season eight, Lexie and Mark tragically died in a plane crash. Chyler Leigh worked with the show's creators to ensure her exit was handled properly.
