Fictious Character
Born November 21, 1954
Played by Mark Harmon

Leroy Jethro Gibbs is a former NCIS (Naval Criminal Investigative Service) Special Agent in Charge of the NCIS Major Case Response Team which operates out of the Navy Yard in Washington D.C.

Born in the small town of Stillwater, Pennsylvania, USA, Gibbs was the only child of US Army Air Force veteran Jackson Gibbs and civilian housewife Ann Gibbs with Gibbs receiving his first two names in honor of Leroy Jethro Moore, Jackson's best friend and business partner.

After graduating from high school, rather than going to college Gibbs chose to join the United States Marine Corps. Gibbs's early years in the Marine Corps were with the Military Police. He rose to non-commissioned officer rank. Later, as a Sergeant, Gibbs became a Scout Sniper and saw several overseas deployments. In 1989-1990, Gibbs deployed to Panama as part of Operation Just Cause, and then in January of 1991, he deployed to Kuwait with the 1st Battalion, 1st Marines during Operation Desert Storm.

Gibbs made his TV debut appearance in the JAG Season 8, 2003

Indisputable facts: Gibbs:

• has lousy taste in women

• is addicted to coffee

• a private man of few words who discloses little to nothing about his personal life

• married four times, and divorced three (his first wife was killed)

• He is acknowledged as one of the "best interrogators in law enforcement"

• speaks fluent Russian, a little Japanese and Chinese and signs American Sign Language

His hobby is woodworking. Gibbs is shown to have a wooden-hulled sailboat under construction in his basement, which he builds entirely by hand without power tools.

1 Never let suspects stay together. "Yankee White" (Season 1)

1 Never screw over your partner. "Blowback" (Season 4);

2 Always wear gloves at a crime scene. "Yankee White" (Season 1)

3 Don't believe what you're told. Double check. "Yankee White" (Season 1)

3 Never be unreachable. "Deception" (Season 3)

4 The best way to keep a secret? Keep it to yourself. "Blowback" (Season 4)

5 You don't waste good. "Baltimore " (Season 8)

6 Never say you're sorry. It's a sign of weakness. "Flesh and Blood" (Season 8)

7 Always be specific when you lie. "Reveille" (Season 1)

8 Never take anything for granted. "Probie" (Season 3)

9 Never go anywhere without a knife. "One Shot, One Kill" (Season 1)

10 Never get personally involved in a case. "Obsession" (Season 7);

11 When the job is done, walk away. "Semper Fidelis" (Season 6)

12 Never date a co-worker. "Enigma" (Season 1);

13 Never, ever involve lawyers. "Collateral Damage" (Season 6);

14 Bend the line, don't break it. "Anonymous was a Woman (Season 11)

15 Always work as a team. "Leap of Faith (Season 5)

16 If someone thinks they have the upper hand, break it. "Pyramid (Season 8)

17 Never, ever interrupt Gibbs during an interrogation. "Privileged Information (Season 14)

18 It's better to seek forgiveness than ask permission. "Silver War (Season 3)

20 Always look under. "The Artful Dodger (Season 12)

21 Don't work the system when you can work the people. "Hung Out to Dry" (Season 1)

22 Never ever bother Gibbs in interrogation. "Smoked (Season 4)

23 Never mess with a Marine's coffee... if you want to live. "Forced Entry (Season 2)

24 Don't stop checking and rechecking evidence until you are satisfied. "Light Sleeper" (Season 3)

25, 26

27 There are two ways to follow someone. First way, they never notice you. Second way, they only notice you. "Jack-Knife (Season 7);

28 When you need help, ask. "Blood Brothers (Season 13)

29 … 34

35 Always watch the watchers. "Baltimore" (Season 8)

36 If you feel like you are being played, you probably are. "Nature of the Beast" (Season 9)

37

38 Your case, you're lead. "Bounce" (Season 6);

39 There is no such thing as coincidence. "Obsession" (Season 7)

40 If it seems like someone is out to get you, they are. "Borderland" (Season 7)

41 If you want to find something, you follow it. "Deliverance" (Season 6)

42 Never accept an apology from someone who just sucker punched you. "Psych Out" (Season 9)

43

44 First things first, hide the women and children. "Patriot Down" (Season 7);

45 Clean up the mess that you make. "Rule Fifty-One" (Season 7)

46 … 50

51 Sometimes you're wrong. "Rule Fifty-One" (Season 7);

52 … 61

62 Always give people space when they get off an elevator. "Double Back" (Season 11)

63 … 68

69 Never trust a woman who doesn't trust her man. "Devil's Triangle" (Season 9)

70, 71

72 Always be open to new things. "Spies Part 2 (NCIS: Hawaii (season 1)

73 Never meet your heroes. "A Thousand Words" (Season 16)

74 … 90

91 When you walk away, don't look back. "Rule 91" (Season 18)

99 Never tell Gibbs he's being audited. "Once Upon a Tim" (Season 16)