The show features an ensemble cast of regular characters, with nine main characters in its first season.
Since the first season, many characters have left the show or have been written out, and new main characters have been written in and out of the series.
Following is a list of characters who have appeared over the various seasons since the drama's premiere.
*Cristina Yang's guest appearance in the Season 11 episode "She's Leaving Home" is portrayed by an uncredited body double instead of Sandra Oh.
Madison Clark (Kim Dickens) is a popular guidance counselor at a high school in El Sereno who, prior to the zombie apocalypse, helped students prepare for their future.
A widowed mother, she raised two children named Alicia and Nick single-handedly, but has recently found love with a high school English teacher.
However, her attitude has since softened, and she has developed a maternal demeanor towards the residents in the hospital.
She has gone through a divorce, which led her to turn down a fellowship in pediatric surgery.
The complex has an old history having been moved from the old Vendo site ...
Pomona, California - I spent my younger childhood in Pomona from 1960 to 1972, on Arboleda Way across from Garfield Park.
Grey's Anatomy is an American television medical drama series created by Shonda Rhimes, broadcast by ABC.
The pressure of survival brings clarity for Madison and she is quick to make the hard choices that will keep her family alive.
The outbreak reveals a past to Madison that she had tried to bury.