NCIS has actually seen numerous personalities come and also go over 18 seasons and more than 400 episodes. However the one consistent through the all has actually been mark Harmon in the role of Leroy Jethro Gibbs.

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With so many episodes, pan have had actually plenty of avenues to obtain to recognize the character and also all his quirks. There’s additionally a good chance the fans have missed a detail or two. Here’s whatever you should know around Gibbs — consisting of what’s in his coffee cup.


Mark Harmon on the set of ‘NCIS’ | Monty Brinton/CBS via Getty Images

The ‘NCIS’ one-of-a-kind agent in charge is a previous marine

The marine Criminal Investigative organization is a civilian organization, however Gibbs gets his experience from the marine Corps. End the years, the display has revealed that Gibbs began off as military police before working his means into coming to be a enlightenment sniper. He retired as a Gunnery Sergeant prior to becoming part of NIS, the organization that eventually came to be NCIS.

During his time in the corps, Gibbs came to be an experienced marksman and also a polyglot. He’s been viewed speaking Mandarin, Japanese, Russian, and also using American sign Language.

Gibbs has a most rules

From the very beginning of the series back in 2003, Gibbs has actually talked about his well known rules. It’s unclear precisely how many there are. Yet we do understand that his catalyst for this exercise came native his late wife Shannon, who mentioned a collection of rule she had actually when they met for the very first time.

Gibbs doesn’t rest his rules very often. And he’s been known to autumn a preeminence permanently if he breaks one and also things work-related out. One instance was as soon as Ellie Bishop (Emily Wickersham) broke the preeminence of “never gain personally associated in a case.” She ended up learning that Ziva David (Cote de Pablo) wasn’t dead.

In the season 18 finale, pan learned the Gibbs’ dominance number 91 was, “When you decide to to walk away, don’t watch back.” that tried come do simply that, however the final seconds of the illustration revealed the he wouldn’t be walking away simply yet.

The ‘NCIS’ lead character has a thing for coffee

Gibbs constantly starts his job off through a cup the coffee, and he’s very particular about what type he drinks. This wasn’t yes, really a Gibbs’ trait once the present began. Yet as it progressed and the writers fleshed the end the character, Gibbs evolved.

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He’s a right shooter, yet a guy of few words. Gibbs likes to cook steaks in the fireplace and build watercrafts in his basement. That prefers plain black coffee that’s strong and made at home. Or, if necessary, he’ll take it one native a coffee vendor. One location that’s not a coffee alternative for Gibbs, though, is the NCIS vending machine.

Leroy Jethro Gibbs has actually been married four times

When it concerns his backstory, Gibbs has had a number of ladies in his life. His first wife Shannon was his true love, and also they had actually a daughter called Kelly. However, castle were eliminated in a car accident and also it virtually broke the marine. He invested the following several years trying to obtain over the tragedy.

Gibbs’ 2nd wife to be Diane Sterling – who likewise married Tobias Fornell – and his 3rd wife was Rebecca Chase. They divorced due to the fact that she was unfaithful, and she finished up marrying the guy she cheated ~ above Gibbs with. His fourth wife to be Stephanie Flynn, that lived with Gibbs during his service in Moscow. She left him due to his obsession with recording serial killer Kyle Boone.

In season 16, it was revealed the Gibbs had actually been involved a 5th time to a woman named Ellen Wallace. One investigation figured out that she was killed the night before the 9/11 attacks.

The ‘NCIS’ OG was named after his father’s friend and also business partner

The surname “Leroy Jethro” no a common one, so many fans have actually wondered end the years just how Gibbs got his name? In season 5, it was revealed the Gibbs was called after his dad Jackson’s best friend.

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Leroy Jethro “LJ” Moore was Jackson Gibbs’ company partner at the Stillwater general Store. They first met while working in the charcoal mines, and also both offered as Marines in people War II. They eventually had a falling out after Gibbs’ mom passed away when that was simply 14, yet things to be later resolved before their respective deaths.