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

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.

We do not guess, Timothy. Nor do we assume, presume, guess-ture or prognosticate.

Ducky

NCIS Quotes

McGee: All right. Well you should probably know that Abby and I used to date?
Bishop: Ew. Like, each other?
McGee: Yeah.
Bishop: Wait - isn't that a violation of rule 12, never date a....
McGee: It was a long time ago. After we'd broken up, one night I went to her lab. Found a scribbled piece paper; a list. Potential boyfriends had to fulfill certain conditions by a pre-arranged date or else, goodbye.
Bishop: Such as.
McGee: Things started off relatively normal: opening the door for her, flowers, putting the seat down. Then around number 8, it gets uh...
Bishop: What?
McGee: Does she know you have these?
Bishop: Does she know you have these?
McGee: Yeah she wasn't happy when she found out.
Bishop: These are all very specific.
McGee: Yeah.
Bishop: These ideas apply to you?
McGee: No those rules weren't in place when we were together. At least I don't think so.
Bishop: What's with the two month cutoff? Abby's sabotaging herself. I've seen stuff like this before. We have to talk to her.

McGee: You know something I don't? Working tonight and tomorrow night?
Tony: No, Tim. It's just that Zoe's parents are in town and they want to have dinner. I'm not ready for that.
Abby: So you deceived her.
Tony: I was put on the spot. I was not prepared.
McGee: Whoa. Hey. What are you afraid of?
Tony: I don't know.
Abby: They're probably really nice.
Tony: I'm sure they are. I've just never had dinner with the parents of a woman I'm seriously involved with.
McGee: That's not true. What about Jon Benois?
Tony: No, technically that wasn't me because I was undercover as Tony DiNardo, professor of film studies. I wasn't myself back then. Meeting the parents for dinner could trigger a whole chain of events.
Abby: It's just dinner, Tony.
Tony: You have dinner yet with Ranger Burt's parents? I didn't think so. Then put down the gavel, take off the robe and stop judging, both of you.
Abby: Okay.