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: Gorney, need a towel or a fan over there?
Ned: You try navigating this gauntlet, Timmy boy. Feels like I just spent hours running through catacombs to kill a dragon-priest only to step outside and have another dragon riding right on my tail.
McGee: It's an obscure Skyrim reference boss that actually makes perfect sense.
Gibbs: Thank you elf-lord. What did you find, dragon-priest?

Keates: Spider?
Tony: Keates?
Gibbs: You know her?
Tony: Um, well I..in a sort of...yeah. She's Philly PD.
Keates: She was. She's ATF now. Special Agent Zoe Keates. You want to get that gun out of my face and come over here and give me a hug?