Actress: Kate Walsh


What we know:
Addison is the now ex-wife of Derek Shepherd.


Key episodes: Season 1, episode 9 ("Who's Zooming Who?") - Arrives at Seattle Grace; Season 3, episode 5 ("Oh, the Guilt') - Divorce from Derek finalized


Medical specialty: OB-GYN/surgery with fellowships in OB/GYN and Medical Genetics.


Relationship rollercoaster:
Married to Derek for 11 years; cheated on Derek with his best friend, Mark Sloane, for the better part of a year. Her marriage was on the mend (well, they were "working on it") when Sloane turned up at Seattle Grace. He now works there as a plastic surgeon. She sleeps with Sloane and later gets a divorce from Derek.

Recently she's revealing feelings toward Alex Karev, who has spent a lot of time working with her in the neo-natal ward. (He has a surprising knack for working with babies.) She must see this softer side of him, and we're all starting to sense some attraction.


Current crush:
Alex Karev. They kissed for the first time in the bar at the end of 03.12 Six Days, Part 2.

Secret?
She aborted Mark's baby 8 months ago because he'd make a "terrible father." She said: "I wanted to have a baby, just not with you." The truth hurts.


Defining moments:
When she tells off a patient who is treating Meredith poorly since she is the "other woman." Addison informs the patient that it was herself who cheated first.


Characteristic quotes:

Addison's Season One Quotes

Addison's Season Two Quotes

Addison's Season Three Quotes


-Why don't you pick a floor and stay on it and I'll pick a floor and stay on that because I really need a moment or two without you. Your face pops up in my head and your panties show up in my husband's pocket, really, you're everywhere, and I need a moment or two without you.


Addison: Hi. I'm Addison Shepherd.
Meredith: Shepherd?
Addison: And you must be the woman who's been screwing my husband.

Addison: Why am I the go to person for adultery?