Leroy Jethro Gibbs
Played by: Mark HarmonBio
Leroy Jethro Gibbs is the special agent in charge on NCIS.
Gibbs joined the United States Marine Corps instead of attending college. He became a Scout Sniper.
In his free time, he is occasionally shown in his basement building a boat, which he named after his daughter.
Gibbs' age has never been revealed, but it was shown that he was born in rural Stillwater, Pennsylvania. His father, Jackson Gibbs, owns a store (the Stillwater General Store) in the same town.
It has been mentioned in the episode "Frame Up" that Gibbs' father was possibly in the United States Army Air Force because Gibbs refers to a pin-up on his father's P-51 Mustang.
He is named after his father's friend, Leroy Jethro, who was his business partner in the store after having worked together in the coal mines. The younger Gibbs left Stillwater in 1976 at the approximate age of 18-20 and, according to his own statements, did not return for over 30 years.
At NCIS, Gibbs is portrayed as a consummate organizer, disciplined and demanding. These traits often put him in a stand-off with other authorities when pressure is being asserted at his team.
He remains a Marine reservist.
Before the time in which NCIS is set, Gibbs travelled extensively on operations, particularly in Eastern Europe, demonstrated by many flashbacks, many including Director Jenny Shepard.
Gibbs displays a continuous urgency about the investigation he pursues, specifically when being given technical information about, complex subject matter.
The typical response to such information is "Give it to me in English", thus forcing the expert to get to the point, as well as making it easy on the audience.
Gibbs has been married three times and had one daughter named Kelly.

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Quotes
Gibbs: Damned if you do.
Franks: In the end, we make sacrifices, live with them. Things happen sometimes that are out of our control.
April 11th, 2013 1:05 PM
Stephanie was wife #3. They were married just 14 months.
January 18th, 2013 1:08 AM
i am trying to find out how many boats gibbs has built since the show has been on the air. I think 4 but am not quite sure but i know he has started several on the show. Does Mark harmon have any interest in woodworking
November 14th, 2012 2:47 PM
Special Agent Gibbs, what are we going to do with you? Bending the rules, creating new ones... where will it end? We need more like you Gibbs... Mark, you are one cool cookie... onward, and thanks to you, and the team!
August 21st, 2012 11:42 AM
Do you want to see a young handsome Gibbs. He has a small acting part in the TV movie Centennial book by Jame A. Michener. He plays a young Lt.in the U.S.Army in the 1800's. out on DVD
June 5th, 2012 5:11 PM
gibbs,we could of made some best of times in the final years of NAM,while u threw footballs i was tossing gredades and burning c4 to heat my coffee.....SKI 101stAirborne71.....1st AirCav72 cmbt.engr.
January 20th, 2012 4:04 PM
Gibbs has 3 ex-wives but has been married 4 times. Shannon and Kelly,1st wife and daughter than mysterious ex wife #1, Diane, and mysterious ex-wife #3
Rank: New User
August 22nd, 2011 4:54 PM
As far as I know, Mark Harmon is still married to Pam Dawber. His son appeared as the young Jethro when he joined the Marines, and met Shannon. Although he is about 62, he is still VERY sexy. His smile and his eyes just light up any scene he is in. I love the intensity and loyalty he (Gibbs) displays for his team members. The casting for his show is perfect, except Rena Sofer is very annoying. Michael Weatherly (DiNozzo) is a very good looking man, too. And Ducky is perfect! I remember the episode when Kate asked Gibbs what Ducky looked like when he was young, and he said Illya Kuriakin (I'm sure I misspelled that), which was the character David McCallum played on Man from U.N.C.L.E. Funny.
August 9th, 2011 8:54 PM
i whatched gibbs on the tv with my dad and he is amazing what he can do. i hope his daughter can appear on the show that will be awsome. so are abby and gibbs boy and girl friend or they just friend on th show.
August 4th, 2011 5:38 PM
I am big fan of Mark Harmon,especially as Liroy Jethro Gibbs, but aren't we all...? He's one hell of a man and when on ncis appears any scene with gubbs and beatiful woman I get thrill, he makes simple smile any gestures so full of this ectricity, this unbearable tension that I have to take a deep breath
Can anyone put a valid link to some online movie when I could watch The Deliberate Stranger with MArk Harmon portraying Ted Bundy? I really would like to see this movie DELIBERATELY for Harmon
May 13th, 2011 12:57 PM
This show works so well because it is so well written. I watch the reruns instead of any other show that is on at the time just for those reasons. Please do not tamper with this so very sucessful combination of cast and of writers.