The incomparable Dr. Donald "Ducky" Mallard is the Chief Medical Examiner on NCIS.

Dr. Mallard is a Scottish-born doctor who has been long-time friends with team leader Gibbs, and underwent medical education at the University of Edinburgh.

He has a "second talent," as Gibbs calls it, to be able to read people, which he expands by studying psychology in his free time. Standard leisure activity.

In cases without actual bodies for Abby and Co. to work with, he assists by using his psychological training to decipher the clues left by the perpetrators.

Duck is an eccentric who often talks to the deceased while doing his job and rambles to his colleagues with many long, off-topic personal remembrances or historical accounts.

He's a kind man at heart, however.

He lived with his aging mother and their four corgis until she had to move out due to Alzheimer's.

Mallard drives a Morgan he restored himself. The ring tone on his phone features bagpipes playing "Scotland the Brave."

Dr. Donald 'Ducky' Mallard Quotes

Tony: One other question, I know you're an expert in English history. And I was just wondering, have you ever heard of Archibald Drummond, the 17th Earl of Trent?
Ducky: The Earl of Trent. No, I can't say I have. Why?
Tony: I was just wondering. Thanks.

Gibbs: He said he was set up.
Ducky: His presence here would tend to confirm that. But set up by whom? Gibbs: Someone from his past ...
Ducky: ... making it appear that he stalked and murdered his tormentors.

NCIS Quotes

I am an NCIS special agent. My duty is to serve and protect the United States, and our Navy and Marine Corps across global boundaries. I recognize my badge as a symbol of authority and public trust. I will live my life above reproach, understanding my actions reflect upon my fellow special agents, and our agency.

Tony

Palmer: I take it you heard?
Gibbs: Mmm hmm.
Palmer: Yeah, she saw the baby and just....I guess she felt the same way we felt when we first saw him. Can't fault her for that, right?
Gibbs: You should go home.
Palmer: I will. Yeah Breena and I, we just wanted to get all this stuff out of the house. You know, we wanted to give it back as soon as possible.
Gibbs: We.
Palmer: Me. She's hurting too, but she is so much stronger. She's ready to try again. And me - I feel like I can't breathe. I never felt this bad in my life, Gibbs.
Gibbs: Well, just wait until it's 3:00 in the morning, and your kid's running 104. You're just getting started.
Palmer: That's the point. I'm not starting, you know? Maybe I never will.
Gibbs: Well then fight for it, Palmer! That's what you do. You fight for your family. And sometimes, you fight like hell just to have one.
Palmer: You want me to fight, I feel like I just went ten rounds with Joe Louis.
Gibbs: Do you want to be a dad, Palmer? Because right now, this is being a dad.
Palmer: Maybe I'm not ready.
Gibbs: You wouldn't feel the way you feel, right now, if you weren't ready.