%% NEVER put spoiler tags in the character descriptions for any reason. Ever. NEVER put the name of a trope in spoiler tags. Ever. Leave spoilers out of the character descriptions entirely, and if the trope name on its own is a spoiler, either don't add the entry at all or embed it as a pothole from another trope entry. Read Administrivia/HandlingSpoilers for further details.
The characters of the hit series ''Series/{{NCIS}}''. '''Warning:''' There's a lot of untagged spoilers here. Probably best not to read this unless you're caught up.


!Main Characters
[[folder:Special Agent in Charge Leroy Jethro Gibbs]]
->'''Played By''': Creator/MarkHarmon
->'''Tony:''' ''What have you heard? That suspects would rather confess than be interrogated by him? That his steely gaze can cool a room by five degrees? That he can only be killed by a silver bullet, like a werewolf? Well, it's all true, except the silver bullet part. Might give him indigestion or heartburn, but I don't think it'd kill him. Any other questions?''

Not to be confused with [[LudicrousGibs Ludicrous Gibbs]], though he does pull some pretty crazy stunts to get the bad guys.

A former US Marine Scout Sniper, he joined what was then called the Naval Investigative Service shortly after the First Gulf War in the wake of his first wife and daughter's murders. He rose up the ranks to become the Special Agent in Charge of the Major Case Response Team, responsible for investigating Navy and Marine Corps-related crimes in and around Washington DC, and has a rather hands-on approach when it comes to maintaining discipline amongst his subordinates.

He is a master interrogator and there are very few people who are brave/stupid enough to try and resist his death glare.

Also, he is a functional mute.

%%* ActionDad
* AffectionateGestureToTheHead: Only Gibbs could turn his repeated [[DopeSlap dope slaps]] to [=DiNozzo=] into this.
* AlwaysGetsHisMan: Highlighted in ''Mind Games'': The serial killer featured in that episode was the boogeyman of D.C. when he was active, evading metro cops and terrorizing the female populace. When explaining the case to [=McGee=], Tony and Paula Cassidy finished by saying "But he made one crucial mistake: He killed a Petty Officer."
* AmnesiaDanger: In "Hiatus", a bomb blast knocks Gibbs back to his Marine days. He has critical information that he doesn't remember. Luckily, [[EasyAmnesia remembrance]] is just a DopeSlap away.
* AtonementDetective
* BadBoss: Gibbs leans toward this when he's really angry or upset, as his already-considerable impatience skyrockets, his tolerance for the team's personality quirks goes right out the window, and he gets a lot snippier and DrillSergeantNasty-ish.
* BadassGrandpa: He's well into his 60's and still going strong.
* BasementDweller: He spends most of his spare time in his basement working on various carpentry projects, usually boats. As a sign of just how messed up his personal life is, he's all but abandoned the second floor of his house, preferring to sleep on his couch, with the bedrooms being reserved for the occasional guest or if he has a female companion over.
* BerserkButton: Messing with his coffee.
* BornInTheWrongCentury: Fairly consistent throughout the series. Example: he tried to get a USB drive to work by biting it.
** He also refers to computer chips and the like with terms such as "doo-da" and "deweywhacker."
** It's hard to keep track of how many cell phones he's destroyed during the run of the series, either because they malfunctioned or just generally annoyed him. One even wound up in a jar of paint thinner. His agents now keep plenty of spares in their desks, ready to hand to him at a moment's notice. When the stash ran out, the tech department went crazy.
** When a Roomba vacuum cleaner was about to suck up some of the evidence from a crime scene, he didn't even bother picking it up or trying to turn it off. ''He stomped it to pieces.''
* BrokenBird: He has never fully recovered from the murder of his wife and child. Three ex-wives and dozens of girlfriends that didn't go anywhere are what remains of his love life.
* BunnyEarsLawyer: In a more dramatic than comedic fashion. He has some serious quirks that if not for the fact he gets the bad guys and never gives anything but his best, he wouldn't be employed. For instance, in early seasons, he once interrogated some people by talking with them ''in autopsy as Ducky was working on their alleged victim''. It's acknowledged that except for his impatience for dealing with politics, he could be the ''Director''.
%%* ByronicHero
* CartwrightCurse: With his first wife, Jenny Shepard and Diane Sterling. And even before that, as flashbacks to his basic training days show that he had a crush on a female recruit. Even though it never went beyond flirtation, he clearly felt enough to be devastated by ''her'' death as well and to still remember her years later.
* CatchPhrase: "Ya think?", "What's the point, [=McGee=]?", "Yeah, Gibbs" (default phone answer), and "That's a good question, [Character]. Why don't you find me an answer?", "Grab your gear.", "Is that a fact, _______?"
* ChestOfMedals: Played With. He's badass enough to have earned numerous medals and citations to be this if he wanted but he doesn't care for medals. Tony keeps track of his accomplishments. He even gave away his Silver Star which is the second highest honour that a US serviceman can get for valour in the face of the enemy.
* ColdSniper: Marine sniper previous to his current employment.
%%* CoolOldGuy
* CowboyCop: But he always gets away with it. He's ''Gibbs''. And "he only uses his powers for good".
* CrazyPrepared: As shown in the blackout, he has a kit with three polaroid cameras, Band-Aids, food, and clean socks.
* CrusadingWidower: He didn't rest until he hunted down and killed the man who slaughtered his first wife and their eight-year-old daughter. Actually, he didn't rest after that either.
* DeadpanSnarker: More than half of what he says is pure snark.
* DeathGlare: Has one that is very effective in breaking a suspect or stop Tony when he was being an idiot. This is his default look when his [[BerserkButton buttons]] are pressed.
* DentedIron: Severely wounded during Desert Storm (permanently damaging his eyesight). Later caught in an explosion that caused temporary memory loss. In addition, he's been shot and stabbed several times and nearly drowned once, but recovered no worse for wear. His shooting in the Season 12 finale resulted in some permanent damage, though. His knee was obliterated (necessitating replacement surgery) and he admits, in a rare show of vulnerability, that he's experiencing chronic pain.
* {{Determinator}}: Few things will stop him from getting Justice for those harmed. He will even break some laws if need be.
* DopeSlap: Aka the "Gibbs Slap" done to all of his agents, but to Tony the most. He's even self-inflicted when he knew he was doing something he'd slap any of his agents for.
* DrivesLikeCrazy: Kate at one point describes his driving as "Apparently Gibbs is trying to kill us." He's also the only one on the team unfazed by the motoring antics of Ziva, another crazy driver.
* EmbarrassingFirstName: Though it's never stated that he's embarrassed by it, [[DoNotCallMePaul no one except residents of his hometown or his ex-wives call him 'Leroy']].
* FacialDialogue: Gibbs can hold entire conversations with squints, glares, smirks, and [[DopeSlap Gibbs slaps]].
%%* FairCop
* AFatherToHisMen:
** Ziva directly calls him "the closest thing she has to a father". (Note that her father is very much alive--or, at least, he ''was'' at the time.)
** Later, he explicitly refers to [[TheTeam his team]] as his "kids."
** For a wedding gift, he gives [=McGee=] the watch his father​ gave him on ''his'' wedding day.
* FriendToAllChildren: Probably has something to do with Kelly. If there's a child involved, he will take the case very [[ItsPersonal seriously.]]
* GuileHero: Just as guile as a MagnificentBastard is magnificent.
* GutFeeling: It's legendary. Some fans consider his gut an extra character. His gut has MemeticBadass status ''in-universe.''
* TheHero
* HarpoDoesSomethingFunny: Gibbs' strong-but-silent characterization comes from Mark Harmon deciding early on to not say his lines as written in the scripts and simply reacting with facial expressions as other actors say their parts of the dialogue. Writers have since started doing what they call a "Gibbs pass" on their scripts and cutting or reassigning Harmon's lines until all he's left with are the bare bones to work with.
* HasAType: See below.
* HeroesWantRedHeads: His four past wives, and Jenny Shepard (who the two had a past relationship) are all redheads. He's dating a redhead in the series.
** When Tony learns about Gibbs flirting with a suspect, his immediate response is "Is she a redhead?" She is.
** He asks M. Allison Hart if ''she'' ever used to be a redhead, apparently bewildered by his attraction to her, given that she's a brunette.
** There might be a FreudianExcuse for this--in "Life Before His Eyes", we see that his beloved [[OedipusComplex mother]] was also a redhead.
** Averted with CGIS Agent Abigail Borin. Despite a genuine mutual respect and their virtually identical personalities, there's no hint of an attraction. Even the team fails to note that she's a redhead when debating the possibility of fixing the two up.
* HeterosexualLifePartners: With Ducky.
* HiddenDepths: He apparently plays racquetball and wanted to be a painter when he was younger (wanting to specialize in watercolors).
* HonoraryUncle: To Fornell's daughter (who calls him Uncle Gibbs) by their mutual ex-wife. Also with Mike Franks' half-Arab granddaughter (who is also his goddaughter).
* HopelessWithTech: Ironically enough, 20 years ago Gibbs went undercover as a computer technician. The team finds this ''hilarious'' when they find out.
* IcyBlueEyes: Not always, but employed whenever he gives a DeathGlare.
* InformedFlaw: The injury that damaged his eyesight did nothing to impair his shooting skills, including [[ImprobableAimingSkills sniping a terrorist through a window from a mile away]].
* ItsPersonal: He has a tendency to do this. As said, anything involving children (or otherwise reminding him of Shannon and Kelly) automatically becomes this. Hurting anyone from his team also pushes him to this point. But every criminal that is disgusting enough to him can trigger this.
* JerkWithAHeartOfGold
* KnightInShiningArmor: To the women in his team, especially Abby.
* LastNameBasis
* LaymansTerms: Does this at least once an episode, mostly to Abby, Ducky and [=McGee=].
* TheLeader: Of the Major Response Team.
* MagneticHero
* MarriedToTheJob: Particularly in early seasons. The job is pretty clearly a substitute for his late first wife and daughter, and he pursues it doggedly and near-obsessively. He expects the same of his team.
* MemeticBadass: In-universe. Whenever TheTeam sets up an UltimateShowdownOfUltimateDestiny, they give him the edge.
* MilitaryMaverick
* MustHaveCaffeine: In the form of coffee.
* NoodleIncident: Nothing was known about his second ex-wife until halfway through season ''twelve''.
* OldSoldier: Specifically, an old marine.
* OutlivingOnesOffspring: His daughter died along with his first wife.
* PapaWolf:
** Do ''not'' endanger his people. Just don't. ''Especially'' Abby.
-->'''Abby''':(telling Gibbs why she didn't tell him about an ex she got a restraining order on) "I wanted him restrained, Gibbs, not beaten to a bloody pulp."
** He extends these tendencies in the episode "Requiem" to his deceased daughter's now grown friend Maddie. Twice he's asked if he's her father. He shrugs it off. But ultimately, it's evident he views her in the same light as the rest of his team...as family.
* PerpSweating: A master of interrogation.
** Especially when applying his DeathGlare.
** Don't make Gibbs slap the table. [[YouWouldntLikeMeWhenImAngry You wouldn't like Gibbs when he slaps the table.]]
* PhraseCatcher: "On it, Boss."
* TheQuietOne: Remarkably reticent for the lead character of a TV show. There are entire scenes where he doesn't say a word but is clearly in control and directing the conversation through facial expressions alone. See HarpoDoesSomethingFunny, above, as to why.
* RatedMForManly
* RightBehindMe: Tends to evoke this reaction from his agents.
* RuleNumberOne: "Never let suspects stay together," or maybe it's "Never screw over your partner." There's a lot more "Gibbs Rules". The ones shown tend to be consistent: Never let suspects stay together, Never go anywhere without a knife, Never involve lawyers, Never get personally involved, Never screw over your partner. Rule 44 was sent to Mike Franks to get him away from his house before he was attacked. We only see 15 out of 51 rules for the most part.
** Tony mentions that any situation that requires Gibbs to invoke any rule in the 40s is serious business.
* SexyMentor
* SemperFi: And Gibbs always remembers it.
* SilverFox: Abbey even [[DidIJustSayThatOutLoud calls him this to his face once, by accident.]]
* TheStrategist
* SugarAndIcePersonality
* SympatheticMurderBackstory: He killed the killer of his first wife and daughter.
* TeamDad: To his agents, but especially to Abby, she's more or less the DaddysGirl of the NCIS family.
* TechnologicallyBlindElders: It's a RunningGag that he doesn't know how the digital gadgets work.
* TenMinuteRetirement: Took a little longer than most but he had one.
* UltimateJobSecurity: The man is a maverick and doesn't have the patience to play nice when it would be prudent to do so, but he gets results, meaning that his job is safe.
** Vance and Gibbs become friends of a sort, ''and'' Vance knows that Gibbs has the ''unaltered'' copy of Vance's personnel file - even if he's never opened it. ''Yet''. Gibbs has yet again armor-plated his job security in adamantium.
** When Gibbs "retired" at the end of season 3, it later was revealed that Director Shepard had "neglected" to file his retirement. His job security is so great he can't quit even if he wants to!
** It has been implied on occasion that before Vance, and possibly even during Vance's tenure, Gibbs would be Director if he ever decided he wanted the job; the sheer havoc he could cause if denied means only a fool would try to stop him. It has been implied more than once that Gibbs knows how to deal with politics and how to act as a proper Director. He just doesn't care to do so. The one time Gibbs acted as Director while Jenny was away, we found out he doesn't have the patience for the politics.
--->'''Director Shepard''': Jethro's a great field agent, a great team leader, and he deals more efficiently with difficult politicians than I do.\\
'''Captain Todd Gelfand''': Then why isn't he the...\\
'''Director Shepard''': He shoots them.
* UltimateShowdownOfUltimateDestiny: [[invoked]] The team has had discussions pitting Gibbs vs. the likes of The Franchise/{{Terminator}}, Franchise/{{Godzilla}}, Mothra, and [[MirrorMatch himself]]. They tend to [[MemeticBadass give the edge to Gibbs.]]
* WorkingWithTheEx:
** Once had to deal with one of his ex-wives, his ex-lover, and his current lover at the same time. All he could do was awkwardly stand there as the three women took pot shots at him.
** Diane, the ex-wife he shares with Fornell, has become a recurring character. Most of Diane's venom is directed at Fornell, though, so Gibbs is free to silently snark as they argue. Any episode that features Diane is titled "Devil's Tri-"

[[folder:Forensic Specialist Abigail "Abby" Sciuto]]
->'''Played By''': Pauley Perrette
->'''Tony:''' ''Abby Sciuto, resident NCIS forensic scientist, heart and soul. [[ARiddleWrappedInAMysteryInsideAnEnigma A paradox wrapped in an oxymoron, smothered in contradictions in terms.]] Sleeps in a coffin. Really, the happiest goth you'll ever meet.''

A forensic science genius who apparently handles the lab work for all of NCIS by herself, Abby is a perky goth who always tries to see the best in everyone despite being confronted by all the horrible things people do to each other every day.

She is the barometer by which the mood at NCIS can be judged. If Abby is anything other than her usual cheerful self it means something is most definitely wrong and upsetting her in any way is a guarantee to getting your ass kicked (by her with the rest of Team Gibbs rushing in just as she's finishing up).

* AllWomenArePrudes: Downplayed. She has no problem with sex, just certain expressions of it (like Palmer's foot/shoe fetish AND how carefully he takes note of his coworker's footwear...)
* AwesomenessByAnalysis
* BadassAdorable: Once, she was AloneWithThePsycho, who was her current assistant, and he tried to kill her. The team figured it out, and came running, [[RedundantRescue only to find that she had kicked his ass, hog tied him, and gagged him.]] She wasn't even winded. There's also the time she was taken by a hitman hired to kill her to prevent her from testifying. By the time Gibbs and company arrive, she's using a taser on him.
-->'''Abby:''' ''(To the hitman, lying on the ground [[ScreamsLikeALittleGirl squealing]] while she stands over him) And don't look up my skirt!'' **zaps**
** Implied by Ducky to the corpse in "Toxic": "You messed with the wrong forensic scientist."
* BadassBookworm
* BerserkButton: Abby's two biggest pet peeves are people who claim to be vegetarians but still eat chicken, and poorly handled evidence.
** In "Toxic," (Season 6, Episode 21), she insists, "What is Abby's rule #1? Do not lie to Abby."
* BewareTheNiceOnes:
** She once threatened Agent Lee that she's one of the few people in the world who can kill someone and leave absolutely no forensic evidence.
** And a couple times people tried to hurt Abby, the scene cuts to agents running to help her, and when they arrive, Abby has taken her attacker down, and is clearly coming down from a major adrenaline rush (see BadassAdorable).
** She can verbally dress you down as well as Gibbs, and in a way it's even more harsh just because it's coming from ''her''.
* BoringButPractical: Her job as TheLabRat isn't as conventionally exciting as chasing down suspects but Abby would vehemently disagree.
* BrainsAndBondage
* BrainyBrunette
* BreakoutCharacter: She's basically the series mascot.
* BunnyEarsLawyer: See PerkyGoth. Can also be something of OneOfTheKids at times.
* TheCastShowOff: Pauley Perrette has a Masters Degree in Criminal Science.
* CatchPhrase: "I hate it when he/she/they does/do that." Also, "Gibbs! Gibbs! Gibbs! Gibbs! Gibbs!"
* CasualDangerDialogue: More like [[SubvertedTrope Casual Post-Danger Dialogue]], but after working with - and later duck taping up - the ObviouslyEvil assistant Chip (an assistant that she specifically requested against), Gibbs and co come to rescue her, only to find her sitting in a chair with only one thing to say.
-->'''Abby:''' ''(casually sitting in her chair, used duck tape roll in hands)'' ''Now'' can I work alone?
* CharacterizationMarchesOn: Go back and watch some Season 1 episodes, and you'll see that Abby isn't nearly as bubbly or talkative as she would later become. She's also gotten something of a GirlinessUpgrade over time.
* CheekCopy: Admits in "Left for Dead" (Season 1, Episode 10) that she did this once.
* CheerfulChild: In a flashback we see she was an ''extremely'' cheerful tomboy with a knack for science and detective work.
* ClingyJealousGirl: Abby plays the halves of the trope title separately with [=McGee=]. The "clingy" can kick in when she's upset or worried. The "jealous" can kick in if there's a non-team member around who pulls [=McGee=]'s attention away from her (e.g. an ICE agent played by Jaime "''Series/{{Hustle}}''" Murray). You'd swear at times that they were still dating...
* CrouchingMoronHiddenBadass: In spades.
* CuddleBug
* DamselOutOfDistress: Got captured by the villain when she went over to ''Series/NCISLosAngeles'' for a {{crossover}}. She used his live camera feed to send her location to Callen's team via Morse code blinks.
** This happens several times over the series, including tasing a stalker into submission and duct taping up a forensics specialist who was trying to get Tony convicted of murder. Abby does occasionally get into trouble, but she's more than capable of saving herself.
* DespairEventHorizon: When she thought she isn't doing enough good to counteract all the bad, she was horribly detracted and ''even called in sick''. Triggered when she was reminded of her very first "case": When she was a child she found a little girl's teddy bear and went to return it, but due to family drama (the girl's dad hated his father-in-law who had given her the bear) the girl couldn't take it back; she even found the girl's grandpa who told her it was impossible. Eventually Abby secretly gave her one of her own toys instead and kept that bear until it fell apart.
* EeriePaleSkinnedBrunette
* EmbarrassingFirstName: She doesn't much care for being called "Abigail" by Ducky.
* FakeFood: The giant cup of the Caf-Pow soda that Abby frequently drinks is actually sugar-free cranberry juice; it was orginally Hawaiian Punch up until around the fourth season, when Pauley Perrette gave up eating or drinking anything that contained refined sugar.
* FirstNameBasis: Besides his wife and Gibbs, she's the only one who calls Director Vance "Leon".
* FreakyFashionMildMind
* FryingPanOfDoom: Used to great effect while helping Ziva to subdue an intruder at Gibbs' place. She even lampshades her choice of a weapon.
-->'''Abby''': It's a frying pan. It's a little cliché.
-->'''Ziva''': Works for me.
* GenkiGirl: If this were a manga, she would be most likely to SayItWithHearts.
* GirlishPigtails:
** "Hit and Run" shows that she had these even as an ''actual'' young girl.
* TheGlomp
* HappilyAdopted: Nine seasons in and we learn she was this to her deaf parents.
* TheHeart: As indicated in the character quote, again. Even those who ''know'' she isn't an easy mark will go after her first for that reason.
* HotScientist
* ICallItVera: "Major Mass Spec" and her other lab equipment. She also names her own teeth, though they appear to be masculine names - one is Frank.
* ImprobableAge: Abby was stated as being in her late twenties during season 7. And it's also been heavily implied she has a [=PhD=] in chemistry.
* IWorkAlone: For the sake of ''everyone'' involved. Including the bad guys.
* IllPretendIDidntHearThat: When Michelle Lee suggests that NCIS is better off without Gibbs in the episode "Escaped":
-->'''Abby:''' I like you Michelle, so I'm going to pretend you didn't just say that.
* KillerRabbit: See below.
* LabcoatOfScienceAndMedicine: Usually unbuttoned to frame her goth outfits. Whenever she is showing her {{Wrench Wench}} attitude, she swaps it for red NCIS overalls.
* TheLabRat
* LetsGetDangerous: People who target Abby tend to wish they hadn't (via [[OffScreenMomentOfAwesome off-screen mayhem]]).
* LikeBrotherAndSister: With Tony whom she treats like an older brother. Also [=McGee=] after both recieved some CharacterDevelopment. She also treats Ziva and Kate like older sisters.
* LoveYouAndEverybody: She's a big-time hugger.
* MoralityPet: To Gibbs. He refers to her as the team mascot.
* MotorMouth: And how. It seems the more stressed she is, the faster she'll talk and the more tangents she'll go off on. Usually Gibbs has to pull her back on track.
* MsFanservice: FetishFuel, indeed.
** At the same time, her youth and ceaseless energy makes her a true KidAppealCharacter both InUniverse and out.
* MustHaveCaffeine: In the form of "Caf Pow" soda.
** She's tried to break the addiction before. It never works.
* NerdsAreSexy
* NightmareFetishist: She sleeps in a coffin.
-->'''Marty:''' You wouldn't happen to have an unhealthy obsession with death, would you?\\
'''Abby:''' Oh, no. It's just a hobby.
* OlderThanTheyLook: Pauley Perrette was born in 1969. Abby looks maybe 25-30.
* ParasolOfPrettiness: Has a black, lacy one, that she carries in a few episodes. Speaking of which...
* PerkyGoth: If you put [[Literature/TheMillenniumTrilogy Lisbeth Salander]] and [[WesternAnimation/ThePerilsOfPenelopePitstop Penelope Pitstop]] in a blender...
** With the ratio of perkiness to gothiness gradually shifting in favor of the former over time.
* PlatonicLifePartners: She and [=McGee=] dated once early in the series, and they had a WillTheyOrWontThey that ended on "won't" (especially with [=McGee=] marrying Deliah), but they still get along fairly well. Enough for her to be his BestWoman.
* PowerEchoes: "...and I will rise up, and I will ''find'' the man that did this to Tony, and I will ''crucify him!''"
* RavenHairIvorySkin
* ReallyGetsAround: Abby's sex life hasn't gotten much attention since the early seasons, but it is known to be... eclectic.
%%%* ARiddleWrappedInAMysteryInsideAnEnigma:
* SavvyGuyEnergeticGirl: Energetic Girl to [=McGee=]'s Savvy Guy.
* SecretTestOfCharacter: She has a list of criteria that the men she dates have to meet before she'll commit to a long term relationship. None know that they are being tested, none (including [=McGee=]) have passed, and her friends take it for granted that every man she's involved with will be gone within a few months. She eventually makes an exception for Burt, the Parks Police Sergeant.
* SeparatedAtBirth: Turns out in season 9 that she was adopted. Her twin brother runs an SPCA-affiliated pet shop.
* SheCleansUpNicely: Most notably in the HalloweenEpisode, "Witch Hunt", from Season 4, where she dresses up as Creator/MarilynMonroe in ''Film/TheSevenYearItch'', causing speechlessness in [=McGee=] and [=DiNozzo=] when they first see her.
* SherlockScan: When Abby's teaching a class on forensics for the Mexican government, one of her students looks at her and snarkily asks if she forgot when The Day of The Dead is. Abby proceeds to tell the woman that she has a cat. When the woman isn't impressed, Abby reels off a list of things she's observed that range from the woman having ''three'' cats of two different breeds, all the way to the fact that she's currently ovulating. The woman quickly shuts up.
* ShesGotLegs: "And ''don't'' look up my skirt!"
* SignLanguage: Her parents were deaf, so she's equally proficient in English and ASL.
* TeamPet
* TechnoBabble
* TomboyAndGirlyGirl: The Girly Girl to Kate and Ziva's Tomboy. Being a WrenchWench puts her in {{Tomboy}} territory, too.
* TooKinkyToTorture: Implied with Abby in "Bloodbath":
-->'''[=McGee=]:''' Now, you stay here and don't answer the door, or I will tie you up!
-->'''Abby:''' ''Really?''
* {{Tsundere}}: On any given episode she can be the sweetest, most loving and caring ball of fluff on the series and turn around to threatening anyone with the fact that she can kill them and leave no forensic evidence. Witness her Dere to Tsun turn around in the season 5 episode "Dog Tags" with [=McGee=] when she first sees [=McGee=] hurt, only to wanting to never have met him when she realized he shot a dog. Never mind that [[CrimeOfSelfDefense It Was Self-Defense]].
* WillTheyOrWontThey: Rather, will they or won't they ''again''; she and [=McGee=] used to date, and still have chemistry, up to and including being jealous of whoever the other one is currently seeing. As of Season 12, however, [=McGee=] makes clear that they never will because Abby has a secret list of criteria that the men she dates must meet (without them even knowing that there is a list) before certain dates and no one's ever made it past two months with her. Also, [=McGee=] and Deliah married each other at the end of Season 14.
* VanityLicensePlate: "4NS CHIK" displayed on her red 1932 Ford Deuce Coupe. The car before this one was a hearse.
* ZettaiRyouiki

[[folder:Senior Special Agent Timothy [=McGee=]]]
->'''Played By''': Sean Murray
->'''Abby:''' ''I love it when you talk geek!''
->'''[=McGee=]:''' ''I love it that you love it.''

A tech genius who graduated from college as a teenager. [=McGee=] was the MCRT's long-suffering probationary agent who eventually grew in confidence to become a seasoned investigator. He is also a fairly successful author who's written a series of novels based on his coworkers (to their intense displeasure).

* AccidentalMisnaming: Suffers from all of Tony's Mc-names and being called "Probie."
* AffectionateNickname: He's originally addressed as "Probie" by Tony as an epithet, but it morphs into something friendlier and even somewhat affectionate as Tim gains more experience and starts standing up for himself. Tim learns to accept it when he learns that Gibbs is still called "Probie" by people who knew him from his Probie days 20 years ago, and that it eventually becomes a reminder of the mentor-mentee relationship some agents share.
* BewareTheNiceOnes: He is the kindest and most polite secret agent you will ever come across, but do something that pisses him off and you ''will'' regret it. He has the tech savviness, book smarts, gun skill and combat skill to make the rest of your life miserable if he really wants to.
* BewareTheSillyOnes: Don't let the husky size and geek-personality fool you, he is a skilled interrogator, hacker, and an excellent shot.
* BigBrotherInstinct: Will do some irrational things to protect his college-age sister, some of which have jeopardized his career once.
* BunnyEarsLawyer
* ButtMonkey
* CatchPhrase: "On it, boss." He hates it when he ends up using this for Tony, knowing he will never let him live it down.
* ClearMyName: In "Probie" he was charged with killing another cop.
* CoolCar: Had one in high school, much to the surprise of Tony. He shares in lamenting the car's demise when [=McGee=] told him of its fate.
* DeadpanSnarker: In later seasons.
* DisappearedDad: His father dies in season 12, and had not been a major part of his life since before the show started.
* EmbarrassingMiddleName: His middle name is Farragut. This was first mentioned halfway through season 13.
* EmbarrassingNickname: He is particularly ashamed when his colleagues call him "Elf Lord" (his online gaming name).
* FairCop: Sean Murray as Agent [=McGee=] would seem to be the only one to avert this, but then he lost a good amount of weight entering Season 7, and now we can include him.
* FakeGuestStar: In season 1.
* FriendToAllChildren: An early mission involving TheTeam being bodyguards to a military woman and her family showed Kate and Tony struggling to get along with said client's children, while [=McGee=] just played ORPG with the son and things ran very smoothly (much to Tony's dismay). He also bonds fairly well with Henry, the 14-year-old who's being targeted for witnessing a drug-related stabbing in "Homefront" due to the two of them being {{Military Brat}}s.
* HappilyMarried: Married Delilah Fielding at the end of Season 14.
* HiddenDepths: A tech head, hacker and best selling author.
** Who loves the outdoors and has various skills from the scouts, including tracking abilities.
* HollywoodNerd: He plays role-playing games online, prompting the others to occasionally call him "Elf Lord."
** Somewhat justified in that his online character is named "Elflord".
* IdiotBall: When his sister showed up to his apartment obviously drugged, in a stupor saying she killed someone, and covered in blood, the seasoned investigator grabs this with a dose of BigBrotherInstinct as he doesn't take her to NCIS or even the hospital. He lets her shower and by the time she does get her blood tested, the drugs had metabolized. The Director calls him out on this, hoping it would trick him into resigning.
** Also averted to some degree in that episode when in justifying his actions to Gibbs that he knows how it looks and because of that he couldn't trust anyone, even Gibbs. [[OOCIsSeriousBusiness Gibbs accepts the apology.]]
* InSeriesNickname: Gets a new one nearly once-per episode, almost always recived as a variant of his last name, with 'gee' being replaced by an insult or something pertaining to his personality. However, the moniker 'Elf Lord' has stuck around quite consistently, and even ''Gibbs'' has used it.
* IntimateMarks: In season 1 he gets a tattoo on his butt to impress Abby. Later it's revealed that it's the word "Mom".
* LastNameBasis: Almost always referred to as "[=McGee=]".
* TheLancer: Tony's departure means that [=McGee=] is now Gibbs' NumberTwo.
* LikeBrotherAndSister: With Ziva whom he treats like a barely older twin sister, also a BigBrotherMentor to Ellie. Also Abby after both recieved some CharacterDevelopment. He also treats Tony like an annoying older brother.
* LoserHasYourBack: Plays this role once or twice in early seasons, but he's no longer enough of a loser to pull it off.
* MilitaryBrat: His father was an Admiral in the Navy.
* MostWritersAreWriters: He's a successful author of novels inspired by his workplace and coworkers, which he writes under the SignificantAnagram "Thom E. Gemcity."
* MrFixit: "Special Agent Goodwrench," season two, episode four.
* MysteryWriterDetective: [=McGee=] is a special agent, who wrote a best selling novel... that he would have preferred his coworkers never found out about. Later on, he was able to use his fame to get into a club that other undercover agents couldn't get in to.
* NameMcAdjective: Tony gives him a lot of Mc-nicknames to work with.
* NerdsAreSexy
* NotSoAboveItAll: After years of protesting against Tony's treatment of him, [=McGee=]'s just as eager to break in Ziva and Bishop when they join the team as probies. However, he continually insists that the way ''he'' treats probies is nowhere near as bad as how Tony treated him.
* NumberTwo: Ever since Tony left. Symbolized by Tony calling [=McGee=] "Very Special Agent."
* OfficialCouple: With Delilah Fielding, who's now his wife.
* PlatonicLifePartners: He and Abby dated once early in the series, and they've had a WillTheyOrWontThey that ended with "won't", but they still get along fairly well. Enough for her to be his BestWoman at his wedding.
* PromotionToOpeningTitles: Starting season 2.
* ProperlyParanoid: [=McGee=] never tells anyone where he works. He'll give out cell numbers, pages, etc, but he never mentions NCIS. Which is how he knows, when his new girlfriend shows up to pick him up after work, that she's not who she says she is. Overlaps with INeverSaidItWasPoison.
* RealNameAsAnAlias: His pseudonym as a writer is just an anagram of his full name.
* RecurringCharacter: In season 1.
* RoaringRampageOfRevenge: Not his own, but Ziva's, against Bodnar.
* SavvyGuyEnergeticGirl: Savvy Guy to Abby's Energetic Girl.
* SensitiveGuyAndManlyMan: Sensitive Guy to Tony's Manly Man.
* TenMinuteRetirement: Between seasons 10 and 11 to get the case against Gibbs dismissed.
* TheSmartGuy
* TechnoBabble
* TookALevelInBadass: Between seasons six and seven. Big time. Most exemplified in the episode "Need To Know" when he was giving the young Special Agent Dorneget tips onto how he could possibly join the Major Case Squad as well as some of Gibbs' rules.[[note]]And then Dorneget reveals he forgot his service weapon.[[/note]]
** The extra levels in badass arguably started with the sixth season episode "Caged", where he has to solve a murder case in a [[GirlsBehindBars women's prison]] on his own. Compare the phone calls he has with a car mechanic [[BookEnds at the start and at the end]] of the episode.
* VitriolicBestBuds: With Tony, behaving much like a pair of [[SiblingRivalry squabbling brothers]] at times.
* WhamEpisode: Ziva is not hunting Bodnar on her own. [=McGee=] has been helping her track Bodnar's movements. The scene in which Tony finds out what they're doing is played [[DoesThisRemindYouOfAnything like he caught them sleeping together.]]
* WillTheyOrWontThey: As noted above with Abby, although [=McGee=] says outright in Season 12 that they never will because he failed to pass a SecretTestOfCharacter Abby gives to all the men she dates. And because he later ends up marrying Delilah Fielding.

[[folder:Medical Examiner's Assistant Jimmy Palmer]]
->'''Played By''': Brian Dietzen
->''"Is it just me or does anyone else wonder how they get [=IUDs=] in there? {{Beat}} That probably sounded a lot more inappropriate than I meant."''

Ducky's protoge who also acts as a Ducky-expy to Tony's Gibbs whenever Tony is in charge of a case. He is always eager to help the team any way he can, even if his skills are more or less exclusive to the morgue. He's married to a woman named Breena and they have a daughter named Victoria..

* ActionSurvivor: He works out in a gym but he isn't combat proficient.
* {{Adorkable}}
* BrainyBrunette
* ButtMonkey: If there's a chance for a character to be insulted or put-upon in any given episode, there's at least a 75% chance it'll be Palmer.
* TheConsigliere: It's revealed in one episode that whenever Tony is left in charge of a case, he secretly has meetings with Palmer to help point him in the right direction whenever Tony feels that he's lost on what to do next.
* CrouchingMoronHiddenBadass: Is very intelligent and a good assistant to Ducky, but has problems with self-confidence.
* ExactWords: He uses this on Gibbs during his CrowningMomentOfAwesome (see the page), pointing out that he technically stayed in the car as he was ordered.
* FakeGuestStar: Might as well be a TropeCodifier. Dietzen was credited as a recurring guest star for the first 5 seasons and as "Also Starring" from season 6 onwards. He was even on the cover art for the Season 8 DVD and was featured in articles alongside the main cast but he wasn't promoted to the opening titles until Season 10.
* {{Fetish}}: He apparently has a thing for footwear.
* TheGlassesComeOff: During his CrowningMomentOfAwesome.
* HappilyMarried: To Breena in Season 10.
* HeroicBSOD: He gets this after Diane, Gibbs' and Fornell's ex-wife, dies.
-->'''Ducky:''' Right, on three. One, twoŚ\\
'''Palmer:''' No.\\
'''Ducky:''' I beg your pardon?\\
'''Palmer:''' No. I don't want to.\\
'''Ducky:''' You don't want to what, Mr. Palmer?\\
'''Palmer:''' I don't want to know how much her liver weighs. I don't want to catalog her scars. ''(Gibbs enters autopsy)'' Most of all, I don't want to cut open another friend. I think I've had my limit. ''(walks away)''\\
'''Ducky:''' I don't remember the moment I reached my limit, but I do remember never being the same.
* HiddenDepths: He trained as a medical examiner and is presumably being groomed to replace Ducky in the future, but he also demonstrates significant knowledge of criminal activity when he acts as Tony's secret consigliere.
** The episode ''Keep Going'' reveals that [[RuleOfThree he took and failed the ME exam twice, and passed on the third try.]] This means that he could be an official ME on par with Ducky outside the Navy Yard-- but since he respects Team Gibbs' dynamic so much, he chose to stay.
* HollywoodNerd
* InSeriesNickname: the numerous MemeticMutation 'Autopsy Gremlin' that he received from [=DiNozzo=].
* LovedINotHonorMore: He tells his love that while he loves her more than anything, his TrueCompanions were in trouble and he needed to go and help them, even if it meant moving the wedding up to a sooner date (within the hour) and then come back for the honeymoon. She completely understands.
* {{Megane}}
* MyHovercraftIsFullOfEels: His story about spending time in France features a downplayed example: He was trying to tell some French friends of his how his mother used to hunt squirrels when he was a child, but he mixed up the French word for "squirrel" with the word for "shark".
-->'''Ducky:''' ''(chuckling)'' "How they must have imagined your strange homeland with your shark-hunting mother."
* NerdsAreSexy: Agent Lee thought so and so does his wife, Breena.
* NightmareFetishist
* OpenMouthInsertFoot: Every episode if not more than once per episode. See the character quote above. Clearly Jimmy has never heard the adage that "closed mouths gather no feet". It usually leads straight into [[DiggingYourselfDeeper Digging Himself Deeper]]. For example, Quinn was feeling very awkward after she had a sex dream about Gibbs so he tried to comfort her by revealing [[IfItsYouItsOkay that he had pretty much the same dream]] ("He knocks on the desk and asks 'Do you know what kind of wood this is' and things get ''wild''!") with a bit too much enthusiasm.
* PersonAsVerb: In a CallBack to his CrowningMomentOfAwesome, an [=NSA=] agent is mentioned as having "pulled a Palmer" in an 11th season episode.
* PromotionToOpeningTitles: After eight seasons on the show, Brian Dietzen was finally upgraded to a series regular in season ten.
* RankUp: Passed the Medical Examiner's examination at some point in season 14 and didn't tell the others because he didn't want to leave the team.
* RecurringCharacter
* RecklessGunUsage: Palmer has no actual firearms training so it almost results in IJustShotMarvinInTheFace with Ducky in the season 10 episode "Detour".
** Ducky, whose military training may be decades old, is smart enough to carefully push the gun away from his face and avoid being accidentally shot.
* {{Retirony}}: Subverted. One moment, Jimmy's talking with Agent Barrett about his recent engagement. Seconds later, the Port-to-Port Killer is loose and violently kidnapping Jimmy and Barrett. However, Gibbs saves the day, and Jimmy ends up surviving the episode with only a few scratches.
* ThatCameOutWrong: Happens to him a lot, and when he tries to explain, [[DiggingYourselfDeeper he just looks worse]].
* TooKinkyToTorture: When he helps Abby solve a problem, Gibbs gives Abby a peck on the cheek and Jimmy [[DopeSlap a Gibbs slap]]. He looks just as pleased at this as Abby. Though that might have been because the slap meant that Gibbs considered him part of the team.
** In an earlier episode, Ducky mentions that his attempts to emulate the [[DopeSlap "Gibbs' Slap"]] on Palmer were ineffective, as he seemed to enjoy it.
** Palmer himself lampshades this after Gibbs [[DopeSlap slaps]] him in "Scope".
-->'''Palmer:''' "Every time he does that, I feel special."
* TheWatson: To Ducky's Holmes.

[[folder:Special Agent Eleanor "Ellie" Bishop]]
->'''Played By''': Emily Wickersham
->''"I wrote it my third day at the [=NSA=]. It was a Wednesday morning, I'd just finished a box of Coco Pebbles."''

An NSA analyst brought to joint duty with NCIS. Gibbs says that he wants to keep Bishop around after she helps the team solve a case involving high level security leaks, which she predicted in a paper years ago. Now officially the newest Probie on Team Gibbs.

* ActionGirl: Having had three older brothers, Bishop is fairly adept at grappling with opponents who are much larger than her. On the other hand, she has little experience with gunfights and hasn't done well in those she participated in so far[[note]]In her first shootout, she fired one shot that appeared to cause a major explosion and incinerated a suspect (later revealed to be not her fault). In her second, the first shot fired hit her in the vest and she is left groaning on the ground while the rest of the team return fire. Her third gunfight, at the time against a Taliban mook, was more successful, but still left her pretty shocked. By season 13, she's gotten better[[/note]].
* AffectionateNickname: She inherits the title of "Probie", although Tony calls her that with none of the venom he used when [=McGee=] was the junior member of the team.
* AwesomeByAnalysis: What she did at the NSA.
* AmbiguousDisorder: Has several signs of AspergersSyndrome.
* BewareTheNiceOnes: One of the nicest people you'd ever meet and possibly tricked a terrorist into blowing himself up to avenge her fiance.
* BigEater: She loves to snack and uses food as a device to help her recall details. The first thing she asks about the NCIS New Orleans office is if they have a junk food machine which completely dumbfounds [=SSA=] Pride.
* BunnyEarsLawyer: Tends to create "nests" where she works, which is often on the floor rather than a desk (or sometimes ''on'' her desk), although Gibbs eventually puts an end to this practice in the office. Also associates key details of situations and her surroundings with foods she was eating at the time.
* CartwrightCurse: One failed marriage and one dead boyfriend/would-have-been fiance. Looks like she's well on her way to having the same screwed up love life that nearly everyone else does.
* TheCutie: She is notably LighterAndSofter compared to her two predecessors, Kate and Ziva. It's even reflected with their hair colors and personalities (she's blond and more social, while both her predecessors were initially {{Aloof Dark Haired Girl}}s to the max). She can also match Abby's perkiness if she wanted to.
* DisposableWoman / StuffedInAFridge: Genderflipped; is revealed to be dating an Afghani interpreter (about a year after getting divorced) who was rescued in a previous episode. The second episode featuring their relationship is also when he's shot to (brain)death by a Chinese financial terrorist because he cracked the terrorist's code.
* DumbBlonde: Inverted. She's a brilliant NSA analyst who predicted several security breaches years in advance.
* DynamicEntry: She misunderstands Tony asking her to open a hotel door and eagerly tries to kick it down but doesn't do any damage because of her small stature. Tony then reminds her that they'd just gotten a key from the front desk and meant for her to use that.
* FakeGuestStar: In season 11.
* FreezeFrameBonus: On her desk is a sticker for Oklahoma State University, presumably her alma mater. OSU is located in Stillwater, Oklahoma, [[NamesTheSame the same name]] as Gibbs' hometown in Pennsylvania.
* HappilyMarried: She was married to a man named Jake, who she's known since they were in college together. Her new job as an [=NCIS=] agent caused a strain on her marriage, which fell apart when Jake had an affair with a coworker.
* HeadTiltinglyKinky: Bishop claims to have had sex in a position that Tony and [=McGee=] consider to be impossible. She was about to start explaining how it was done when Gibbs walks in, ending the conversation.
* HollywoodNerd: Almost always has a notebook computer with her.
* HoneyTrap: Implied to be how Bishop became the NSA's expert on Benham Parsa. (the NSA does number crunching, not field work, so this got Bishop yanked off the case.)
* TheMaidenNameDebate: She used her maiden name rather than Jake's surname.
* MotorMouth: When she gets going, she could give Abby a run for her money.
* NerdsAreSexy
* NeverGetsDrunk: Claims this is the case, though it hasn't been shown on screen. She apparently learned this during a NoodleIncident at college with her future husband.
* NewMeat: Has to bear the brunt of Tony and [=McGee=]'s ribbing and hazing and does all the dirty work the senior agents don't want to do. Her first day as an agent involved sifting through buckets of human excrement and climbing up a rickety fire escape even though she isn't good with heights.
-->'''Bishop''': "First, 'Probie' sounded endearing...and cute...doesn't anymore."
* NoodleIncident: Claims to have successfully executed a sexual position that Tony and [=McGee=] had previously considered anatomically impossible. She starts to explain when Gibbs walks in.
-->'''Tony''': "Are you double jointed?"
* PhotographicMemory: She uses food association to help her with her recall.
* PoorCommunicationKills: Losing her NSA security clearance made it hard to have regular conversations with Jake. Instead of finding other things to talk about, Jake decided to find someone else with NSA credentials.
* PromotionToOpeningTitles: Immediately after she joins TheTeam.
* {{Retcon}}: Bishop originally said that she and Jake knew each other in college, but Jake tells a story where they first met at the NSA.
* {{Revenge}}: Vows to avenge the death of [[spoiler: her fiance Qasim at the hands of Chen the terrorist]], going rogue and risking her life and job. Gibbs, who has some familiarity with Ellie's situation [[spoiler: having also gone rogue to kill the guy who murdered his wife and child]], is worried about her given how screwed up his emotional life has been ever since [[spoiler: and that he and his friends were targeted by the killer's children years later]].
* SadisticChoice: Gave Chen a similar "choice" he gave that episode's victim: Kill himself or get captured by terrorists that Chen ratted out. Chen chose to kill himself and it's implied Ellie tricked him.
* TragicKeepsake: A romantic card with photo booth pics of her and Qasim which would have been her answer to his marriage proposal ("YES!") that she was planning on giving him the day he died. After she avenges his death she gives it to Gibbs so she'll stop dwelling on the past.

[[folder:Director Leon Vance]]
->'''Played By''': Rocky Carroll
->'''Abby:''' ''Wow. I heard about your techy mojo.''

Formerly NCIS' assistant director who oversaw operations on the west coast. He was promoted to agency director in the wake of Jenny Shepard's death. He was initially recruited to the Naval Investigative Service[[note]]NCIS' predecessor[[/note]] as an expendable deep cover operative who did wet work. He has a rather tough managerial style (shaped by his being a boxer when younger) and often butts heads with Gibbs. He's unusual among the cast for having a happy family life, although that's brought to a tragic end by a drive by shooting at his house.

* AndStarring
* AssassinOutclassin: When [=McCallister=] tries to assassinate Vance in hopes of taking his place as Director, Vance stabs him to death despite ''being in a hospital bed on a ventilator'' due to injuries he sustained in an earlier assassination attempt.
* BaitAndSwitchTyrant
* BadBoss/BenevolentBoss: He has a gruff demeanor and can be absolutely tyrannical at times, especially if the situation is critical, but he truly respects his team and would lay his life down for them.
* CrusadingWidower: Starting season 10, as of "[[Recap/NCISS10E11 Shabbat Shalom]]".
* DaChief: He's the Director.
* DeathGlare: Is one of the few people not intimidated by Gibbs', due to having a pretty epic one of his own. When the two of them get into a Glare Down, everyone else hauls ass out of the room.
* EvenBadMenLoveTheirMamas: Vance is the husband and father of a respectable suburban family and unlike Gibbs, is not the type to have a series of four wives.
* GeniusBruiser: He was once a boxer, but can compete with [=McGee=] in knowledge of cryptology.
* HappilyMarried: Until his wife is murdered.
* DeadPersonImpersonation: It's heavily implied in one episode that he is not the real Leon Vance, but an old boxing acquaintance thereof, and that the two switched identities at some point in the past.
* ItsPersonal: Twice he has caused an interrogation to get out of hand because someone close to him was murdered and a suspect was in the hot seat.
* MysteriousPast: Not all of it has been explained...yet. We do know he's quite happy to be out of the field.
* OralFixation: Chewing on toothpicks.
* ScaryBlackMan: He can be absolutely terrifying when he wants to be, which is probably one of the reasons he gets to boss Gibbs around. Taken to severe extremes when he put a fire safety axe through a metal table in the interrogation room to intimidate a teenage suspect who was suspected of killing one of Vance's friends.
* TheUriahGambit: Vance is revealed to have been originally recruited to NIS in 1991 almost specifically for his expendability. Obviously, it didn't go as planned.

[[folder:Chief Medical Examiner Dr. Donald "Ducky" Mallard]]
->'''Played By''': [[Creator/DavidMcCallum David [=McCallum=]]], Adam Campbell (young version)
->''"I look forward to [[ImpliedDeathThreat weighing your liver]]."''

A proud Scotsman with an expansion pack past. He is Gibbs' long time friend and confidant and has a habit of conducting one sided conversations with the bodies he's examining.

* AndStarring
* BadassGrandpa
* BowtiesAreCool: Dr. Donald "Ducky" Mallard, the service's medical examiner, ancillary Cool Uncle of the main group, Scottish gentleman and perpetual font of trivia tangential to the case at hand, always wears a bow-tie to the morgue. It's also practical: a regular tie is likely to get dipped in something nasty.
** Arguably not so much in his youth, as he claims he wouldn't be caught dead wearing one prior to his deployment to the RAMC in the 60s.
* BerserkButton: In "Seadog", Ducky goes ballistic on a local LEO who contaminates a crime scene so he can get in good with the news reporter on the scene. His merely getting angry means he's mellowed, however, as Gibbs has a story where Ducky pushed a French policeman off a cliff[[note]]there was water at the bottom[[/note]] for the same reason. Later in "Conspiracy Theory" we see him going at a psychiatrist whose poor standards led to one of his patients being murdered.
* BewareTheNiceOnes: He's probably the most forgiving character on the show and most bad guys dismiss him because of his advanced age. But he knows exactly where to hit someone to knock them out and possesses the expertise to cut a major blood vessel with a single, seemingly innocuous, cut. Watching him calmly use such a cut as a JackBauerInterrogationTechnique is simply chilling.
* BrokenBird: This was name of the episode when we see just a glimpse of his past, where we see that a TortureTechnician repeatedly tortured the same innocent man not for information but to see how many times Ducky would treat the man before ''Ducky'' would break in order to get rid of his good influence on the other prisoners.
* BunnyEarsLawyer: His tendency to go on long speeches during work is lampshaded by Palmer when he does his first dissection.
-->'''Palmer:''' I'm suddenly overcome with the desire to share a story of only a peripherally relevant nature.\\
'''Ducky:''' It's a hazard of the profession, Mr. Palmer.
* ClearMyName: Ducky didn't want to clear it, but Gibbs did.
* CombatMedic: he served in the Royal Army Medical Corps and was stationed in Afghanistan and Bosnia.
* CombatPragmatist: In [=S11E01=], Ducky took down a random mook with a random bowl, saving Palmer in the process.
* CoolOldGuy
* CoolTrain: Occasionally visible in the background, displayed on a small shelf is a scale model of [[http://classicstreamliners.deviantart.com/art/At-last-clear-shot-of-Mallard-169049780 LNER #4468 "Mallard"]]
** Ducky is carefully maintaining it in one episode and comments on the relationship between his name and its name.
** TragicKeepsake: That train was the last Christmas present he ever gave to his half-brother Nicholas, who dropped it when his mother, who had just divorced Ducky's father, took the boy away from his childhood home and moved to Albania.
* TheCoroner
* CreepyMortician: A very lovable kind of creepy, but still damn creepy. Gibbs finds it a useful way to break some suspects by showing them what will happen to their bodies if they refuse to cooperate and end up dead as a result. It works too.
** He is kidnapped and nearly killed by one, who begins to drain his blood before Gibbs and company arrive to save him.
* ExpansionPackPast: The sheer number of stories he has to tell clearly implies that he's lived a very full life.
* GentlemanAndAScholar: Rarely has he ever raised his voice in anger or struck someone. He uses non-physical forms of intimidation.
* HeroesWantRedHeads: The very lovely Dr. Jordan Hampton.
* [[HonoraryUncle Honorary Grandfather]]: To Victoria Palmer.
* LabcoatOfScienceAndMedicine: he is often shown wearing one, complete with the aforementioned [[{{BowtiesAreCool}} Cool Bowtie]]. He wears blue-green scrubs when performing autopsies and blue overalls on crime scenes.
* LongLostRelative: His half-brother Nicholas Mallard, whom Ducky thought to have been killed in an accident decades ago, turns out to be alive in the episode "Spinning Wheel" (13x11).
* MajorInjuryUnderreaction: In "Broken Bird", Ducky is suddenly attacked by a knife-wielding woman while examining a body at a crime scene. He dismisses it as "just a defensive wound." His right hand still has the knife impaled in it.
* TheMedic: In addition to being the Medical Examiner.
* TheMentor: To Palmer. Officially too.
* TheMunchausen: Averted, as it seems to be generally accepted by those who know him that his stories are true.
* MyBelovedSmother: His mother had Alzheimer's and drove him crazy in early seasons; she was put in a home [[RealLifeWritesThePlot shortly after the death of her actress in late 2008]] and died a year later.
* NewJobAsThePlotDemands: He earned a master's degree in psychology in Season 4 and is occasionally called-upon to profile a suspect. Or to go undercover as an arms dealer, because they needed an older British man on very short notice.
* NonActionGuy
* NoSenseOfDirection: He blames his assistants but he's always the one giving directions.
* OnlyKnownByTheirNickname: Few people call him "Donald".
** Inverted in the way he calls everyone else by their full names--"Anthony", "Timothy", "Caitlin", etc.
* OOCIsSeriousBusiness: Ducky wears a four-in-hand tie to work one day and the other characters immediately wonder what's wrong (granted, he was also acting strangely, but the tie was the major cause for concern).
* TheProfiler
* PunnyName: With a name like that, what did you think he'd be called, Mousey?
** Ari first thinks of the locomotive, mildly surprising Ducky.
* QuintessentialBritishGentleman: He is unfailingly polite and charms ladies of all ages.
* RhymesOnADime: "Witch Hunt" has this one:
-->The sky is blue, the grass is green,
-->May we have our Halloween?
* UsefulNotes/{{Scotland}}
* ShownTheirWork: A meta-version. To prepare for the role, David [=McCallum=] went to coroner and medical examiner's conferences to learn the trade. He became so good the producers were tempted to pay him a consulting fee.
* TalkingToTheDead: He routinely does this with his "patients." TruthInTelevision: RealLife medical examiners have been known to do this.

[[folder:Special Agent Alex Quinn]]
-> '''Played by''': Creator/JenniferEsposito
A federal agent training instructor, Quinn is friends with Gibbs and was once [=McGee=]'s trainer.

* BrokenAce: Was a great field agent until MyGreatestFailure broke her.
* RememberTheNewGuy: Prior to her debut appearance, Quinn met Gibbs.
* MyGreatestFailure: ...she was traumatized by the death of her partner because (from her POV) her partner, a new mother, just wanted to give her some privacy during a stakeout and [[TooDumbToLive got out of the car right in front of the criminals they were watching and got shot to death]]. Additionally, because the reason her partner died (again from Quinn's POV) was an argument with her (Quinn's) fiance...
* ReallyGetsAround: ...her engagement ended and she's been extremely reluctant to have any sort of steady relationship ever since.
* {{Troll}}: Quinn always remembers her trainees. Bishop was one of them. Quinn says she doesn't remember Bishop, although she later tells [=McGee=] that she definitely remembers her. She's just messing with her because she's so tightly wound.

[[folder:Special Agent Nicholas "Nick" Torres]]
-> '''Played by''': Wilmer Valderrama
* BadassBiker: Went undercover in a bike gang. He's still awesome on a bike.
* JerkWithAHeartOfGold: Is deeply reluctant to go out of his way to help a witness (a former sailor who will be deported to Mexico as soon as he's turned over to FBI) see his mother in Ohio one last time until the witness and Bishop [[MostAnnoyingSound threaten to torture him by singing in the car all the way back to DC]]. At the house he covers for him ("He's being redeployed" "Where?" "It's... classified"), stays long enough for mom to make dinner and for her son to tell the truth, and even gives him his cellphone back and lets him go make a call by himself without fear he'll run away. Torres explains that meeting the witness' mom "made it personal" -- he knows people like him and his mom -- and he couldn't ''not'' help him.
* TheLostLenore: He and a childhood friend Sophia were inseparable, and [[ChildhoodFriendRomance he was convinced that she'd be his wife one day.]] Then in their senior year of high school, she was diagnosed with cancer.
* NiceJobBreakingItHero: Although Torres managed to pin Silva for a bunch of crimes, he sabotaged Silva's family.
--> '''Silva''': ''(to Torres through the [[IKnowYoureWatchingMe interrogation glass]])'' You got me, Torres! Now you ruined my family. You happy now?
* RogueAgent: Deep cover for 8 years in Argentina.
* WalkingTechbane: Not to extreme levels but his distaste for office work and complicated technology in general put him in conflict with the printers.

[[folder:[=MI6=] Officer Clayton Reeves]]
-> '''Played by''': Duane Henry

* TheAloner: Part of the reason was that "he didn't want anyone with a family" to put themselves at risk (he was in the foster care system). While he might not know the team's exact family situations (he knows Bishop's and he clearly doesn't know he's not one to talk to Gibbs about the lacking a family) he's aware they consider themselves LikeFamily.
* TheAtoner: Possibly why he apparently signed up for an operation that Quinn described as a suicide mission.
* DarkSecret: Screwed something up ''really bad'' in the past to the point he wasn't sure if he would be able to stay in MI6.
* DeathSeeker: Considering how he was practically ordering Vance in "MIA" to get him another Whillowby-style assignment and receiving one that would've taken him to ''Syria''... (he ultimately rejects it).
* FireForgedFriends: After learning his best friend and fellow agent betrayed both for money he declares that "We're not mates, ''she'' (Bishop) is my mate".
* LonersAreFreaks: Bishop becomes increasingly disturbed that he apparently has no friends as of his MI6 partner's betrayal and only has himself as an emergency contact.
* PromotionToOpeningTitles: After three appearances as a guest star.
* SeparatedByACommonLanguage: Apparently his RunningGag to parallel Ziva's BluntMetaphorsTrauma: One of Bishop's brothers reminds his other brother that "mate" means "friend" in British; Reeves [[InsistentTerminology insists]] his gift to Bishop are "''crisps''" not "chips".
* ShipperOnDeck: Is clearly not bothered that Bishop's brothers suspect he's in a relationship with her (he isn't, but what with the sudden death of her boyfriend...).
* SuspiciouslySimilarSubstitute: For both [=DiNozzo=] and Ziva, as he's introduced in the final episodes mentioning both characters: Outgoing, sharply-dressed lover of pop-culture and foreign person of color from their country's equivalent of the CIA. Subverted in that he didn't wind up joining the team immediately.
* VitriolicBestBuds: With Torres. As the team has never seen two [[TheBigGuy big guys]] of relatively equal status with this relationship everyone is worried they're going to fight, but this is just how they affirm their friendship. [[TestosteronePoisoning They *are* going to fight, however -- how else will they know who's better?]]

!Former Main Characters
[[folder:Special Agent Caitlin "Kate" Todd]]
->'''Played By''': Sasha Alexander
->''"Hack into the servers. I can't believe I just said that. I would have never suggested that before I started working here."''

* ActionGirl
* AloofDarkHairedGirl: Can be cold, especially towards Tony.
* BadassInDistress: Everytime Ari's on-screen, expect her to be in trouble.
* BoomHeadshot
* BrainyBrunette
* BlatantLies: She and her friends conducted themselves with dignity on spring break, she says. College fraternities are bizarre, she says. Tony's MaleGaze habit is sick and wrong, she says. But then they walk in on a photo shoot for the [[MrFanservice US men's water polo team]] and she gets DistractedByTheSexy about as easily as Tony ever did.
* CatholicSchoolGirlsRule: Tony imagines her dressed as such.
** Also an {{homage}} as she was dressed as [[Film/KillBill Gogo]].
* DecoyProtagonist: The first two seasons heavily portrayed her as the {{Deuteragonist}} and TheLancer (her actress was even billed second before Michael Weatherly) until she was McLeaned.
* DroppedABridgeOnHer
* DeadpanSnarker
* DiesWideOpen
* EmotionlessGirl: You can feel a breath of cold air when she talks, especially to Tony.
* FairCop
* FamousLastWords: ''(after Tony told her that she did well and Gibbs said he was right)'' [[KilledMidSentence "Wow, I thought I'd die before I ever heard..."]]
* FormerTeenRebel: [=DiNozzo=] finds out that when she was a university student, she once engaged in (and won) a wet T-shirt contest. This also falls under BlatantLies since she lied to Tony about what she did during Spring Break.
* HorribleJudgeOfCharacter: Her FatalFlaw, literally; She thinks she is a good one but has helped more than one murderous psychopath because they looked sympathetic. One almost kills her, then Ari actually does.
** She's right more often than wrong, so this is a played with trope.
* ImGoingToHellForThis: In the episode where the victim and attacker were on the same "dating" site
--->'''Abby:''' Care to guess what their fetish was, Kate?\\
'''Kate:''' Oh, no. I'm going to hell just listening to all this.
* IntimateMarks: Never seen or described but apparently Abby talked her into getting a tattoo on her butt.
* LadyOfWar
* MoodWhiplash: Causes two cases back to back in the Season 2 finale when she takes a bullet for Gibbs only to reveal she was wearing a bullet-proof vest only to then immediately get shot in the head.
* NotSoDifferent: There are several moments where she just as much like Tony as she claims she isn't. Usually involving [=McGee=], going so far as to agree with Tony that they have no respect for him and casually breaking into his apartment to "see him in natural environment". After apparently taking bets about what kind of underwear he uses.
* MsFanservice: A major subplot in "Conspiracy Theory" revolved around Tony finding a (real) picture of her in a wet T-shirt contest and using it as blackmail material.
* OnlySaneWoman: She felt like this at times with Gibbs and Tony at the beginning.
* RavenHairIvorySkin
* SacrificialLion: The very first main character to die.
* SugarAndIcePersonality
* TomboyAndGirlyGirl: The Tomboy to Abby's Girly Girl.
* TonightSomeoneDies
* TwoFirstNames: Applies to her actress too.
* UnresolvedSexualTension: With Gibbs. It was never resolved after her death, but they had extreme chemistry throughout the first two seasons of the show.

[[folder:Special Agent Ziva David]]
->'''Played By''': Coté de Pablo
->'''Eli David:''' ''Use her well, Leon. Ziva is the sharp end of the spear.''

->''"Have you ever been tied up by a woman before? Did you like it? Then today's not your lucky day."''

* AccidentalMisnaming: As a trainee NCIS agent, Tony had started calling her "Probie". Gibbs had called her "Probie" on at least 2 occasions.
* ActionGirl: Ziva is (ex-)Mossad. Early on in her tenure at NCIS, she is not allowed to participate in taking down suspects. Another woman comments on the presumed chauvinism of this. Ziva replies that Gibbs is actually afraid she'll ''kill the suspect by mistake''. Then it [[FunnyAneurysmMoment happened]]. Several times. [[labelnote:First]] Once when chasing an overweight suspect who has a heart attack when climbing some stairs. She's chastised despite it not being her fault, but mostly out of frustration at losing a lead and it doesn't last the scene.[[/labelnote]] [[labelnote:Second]] And again, much more serious, when she punches an obnoxious suspect in the neck, causing him to drop dead despite her insisting that she does know her own strength and couldn't have killed him. Ducky finds a blood clot in his brain that could have been released and gotten lodged there by the punch, but ultimately rules Natural Causes.[[/labelnote]] [[labelnote:Third]] Ilan Bodnar, but whether that was accidental is debatable.[[/labelnote]]
* AloofDarkHairedGirl: Ziva is a tall, beautiful woman who is a definite IceQueen to her teammates. She mellowed down considerably to the rest of the team by season 7.
* AmbiguouslyBi: Ziva [[GirlOnGirlIsHot enjoys dropping casual hints]] to Tony that she likes girls as well. [[ButNotTooBi So far she's only been seen with male lovers though]]. Mostly played for laughs or titillation.
* AssassinOutclassin: Her ability to effectively and efficiently deal with attackers means that she will probably live to a ripe old age. Or at least that [[DroppedABridgeOnHim seemed to be the case...]]
* BadassIsraeli: Former ''Mossad'' operative. 'Nuff said.
* BecomingTheMask: It is suspected by Leon Vance at the end of season 6 and confirmed by Ziva in early season 7 that she was ordered by her father to kill Ari in order to gain Gibbs' trust and spy on the team. By the end of season 3, her crying over Gibbs' life threatening condition shows she has become closer to her targets than a cold assassin ought to be.
** From "Broken Arrow"
-->'''Chase''': "Does Agent David carry a weapon?"
-->'''Gibbs''': "She is a weapon."
* BelligerentSexualTension: With Tony.
* BerserkButton: A couple, but ''God help you'' if you hurt Tony.
* TheBigGuy: Neither big nor a guy, but unquestionably the best fighter in the main cast.
* BookEnds: In Ziva's debut episode, the first character she meets is Tony. In Ziva's final episode, the last character she interacts with is Tony.
* BrainyBrunette
* BrokenBird: Considering she was held captive in Somalia and tortured for months, she covered it ''extremely'' well. In the season 11 opener, she finds that she no longer can, and this leads to her leaving NCIS for good.
* BluntMetaphorsTrauma: A RunningGag is her regularly messing up American figures of speech.
-->"American idioms are driving me up the ''hall''."
* BunnyEarsLawyer: In her own, unique way, just like the rest of the team.
* ClearMyName: The first episode of season 4 dealt with this issue.
* ConflictingLoyalty: As of the end of season 6, she is torn between her loyalty to Mossad and her father, and Gibbs and [=NCIS=]. She picked Mossad and ended up caught by a terrorist and tortured to be saved by Gibbs and the team. In retrospect, she realizes she made the wrong choice, and decides to stay in the United States from then on and becomes a US Citizen so she can become a bonafide NCIS agent.
* DeadGuyJunior: Names her daughter after her late sister, Tali.
* DefrostingIceQueen
* DoesNotKnowHerOwnStrength: She's not allowed to interrogate suspects because Gibbs thinks she might kill them by mistake.
* DrivesLikeCrazy: Director Shepard once said of her, "I think she was an Eastern European cab driver in a past life."
-->'''Vance:''' Most fathers teach their daughters to drive. I have you to blame for this?\\
'''Eli David:''' This she learned from her [[JewishMother mother]].
** One of her driving habits is doing 80 in a 40 zone, as was noted on her speeding ticket.
* DroppedABridgeOnHim: Three seasons after she left the show, she's killed off screen and the team finds out about through a breaking news bulletin.
* ExtremeMeleeRevenge: How Ilan Bodnar bites it.
* FairCop
* FakeGuestStar: In season 3.
* FeminineWomenCanCook: Averted. While very much the manly ActionHero, she can cook quite well. According to Abby in the episode "Caged", "Her cooking rocks!"
* FemmeFataleSpy
* FireForgedFriends: With the exception of Abby, Ziva truly became close to the team after enduring some difficult investigations.
* FunnyForeigner: Downplayed. She's serious except for her tendency to butcher English-language quotes or figures of speech.
* HeroicBSOD: The final straw is an attempt on her life by a terrorist cell that drives her off the grid. This leads to her departure from NCIS in the Season 11 opener.
* IHaveNoSon: I have no ''father'' in this case. It gets to the point of changing nations just to give him a TakeThat.
* InformedJudaism: Though considering her former profession as a Mossad operative, strict adherence to almost ''any'' religion would be tough. Pointedly, she has on occasion turned down food allegedly because it's not kosher, but she has no problem with pepperoni pizza.
* ImprobableAge: Ziva David is less Improbable Age and more Impossible Age. She joins the show in her early twenties, supposedly after she's graduated high school, served her two years in the IDF, attended college, applied for Mossad, become immediately tapped for inclusion into an elite and highly competitive special operations unit with a training period of several years, and still have enough time to become "an experienced agent" with multiple missions under her belt. And this is at a age the youngest CIA intelligence officers would be beginning training. (It's worth pointing out, however, that she is the daughter of the Director of Mossad, and it is heavily implied that she was all but [[TykeBomb raised from the cradle to be a Mossad operative]].)
* ItIsPronouncedTroPAY: As she has pointed out, her last name is pronounced "Dah-VEED," not "David."
* KillTheOnesYouLove: Ziva is forced to do this to her half-brother Ari.
* KnifeNut: Ziva is one of the few people in the world who can kill you reliably with a thrown knife. She has demonstrated this.
* TheLadette:
* LadyOfWar
* LastMinuteHookup: ''Last Minute Kiss'' with Tony in her final episode.
* LikeBrotherAndSister: With [=McGee=] whom she treats like a younger brother. Also {{Zigzagged|Trope}} with Tony DependingOnTheWriter. She also treats Abby like a younger sister.
* LockedInAFreezer: ''Locked In A Shipping Crate'' with Tony in "Boxed In".
* MaamShock: Another BerserkButton.
* MacGyvering
* {{Malaproper}}: Her messing up quotes, again; this is the main reason she qualified as a FunnyForeigner.
* MilitaryBrat
%%* MsFanservice:
* MyNaymeIs: "David" has the earlier pronunciation (just as it appears, and as an iamb), rather than the Anglicized, trochaic "Dei-vid."
* NewMeat: Although she was attached to [=NCIS=] for several years and was essentially an equal to Tony, she had to start at the bottom when she formally joined the agency as a probie. Tony and [=McGee=] gleefully give her all the paperwork and Gibbs adds to the pile. From then on, she's seen being occasionally frustrated because she goes from being somewhat senior to being the most junior member of the team (even becoming subordinate to [=McGee=], whom she used to boss around) and has to go through the hazing process all probies go through.
* NiceHat: Her TragicKeepsake is an Orange Cap.
* OneOfTheBoys: She likes to hang around men in a nonromantic wolf-in-the-pack sort of way and she takes great pride in her skill at [[ARealManIsAKiller manly things]].
* {{Omniglot}}: She speaks ''at least'' nine languages, including the language of love.
* PhotographicMemory: ''Very'' useful in her line of work as agents who don't develop this tend not to last long in Mossad.
* PromotionToOpeningTitles: Immediately after joining TheTeam.
* PutOnABus: Cote de Pablo left the series after season 10, unable to come to terms with her contract. Ziva, emotionally torn up by the attempt on her life, decided to leave NCIS and stay in Israel off the grid. [[BusCrash Her life comes to an end, offscreen, in "Family First".]]
* ARealManIsAKiller: Woman in this case, thanks to her upbringing.
* RoaringRampageOfRevenge: against Ilan Bodnar, and unsubtly enough to draw attention from the CIA. And roped [=McGee=] into helping, behind Tony's and Gibbs' backs. But in the end, she gets him in a NoHoldsBarredBeatdown.
* ScrabbleBabble: Averted one time she played [=McGee=] in Scrabble. With the last Q at a corner of two Is, she makes Qi twice, read 'Chi'.
* SomeoneToRememberHimBy: The Season 13 finale reveals that Ziva became pregnant by Tony at the beginning of Season 11 (when she was written out) and subsequently gave birth to a daughter. This bombshell is dropped after Ziva's death.
* SuspiciouslySimilarSubstitute: In season 3.
* TomboyAndGirlyGirl: The Tomboy to Abby's Girly Girl.
* TragicKeepsake: Ziva's orange cap; it's a reminder of the victim from "Dead Man Walking".
* UnresolvedSexualTension: The writers seemed to enjoy dropping hints that in fact she and Tony ''had'', something [[TheyDo confirmed]] in the Season 13 finale.
** Michael Weatherly has stated that a kiss was filmed quite a while ago, and was never aired.
* VerbalTic: Has a slight habit of forming questions as statements with "yes?" tacked on the end; which is probably a carry over from her native Hebrew (a language in which asking a question by means of inflection is perfectly common.
* YouKilledMyFather

[[folder:Director Jenny Shepard]]
->'''Played By''': Lauren Holly
->''"Do you think it would be inappropriate if, as director, I went in there and smacked that smile off her face?"''

* ActionGirl
* DaChief: From season 3 to season 5.
* FakeGuestStar: In season 3.
* FieryRedhead
* {{Hypocrite}}: She won't let Gibbs go after Ari without proof, yet she goes after La Grenouille with a vengeance, positive he killed her father, even though ''she'' has no proof.
* IronLady
* ItsPersonal: Her possibly unwarranted hunt for René Benoît is this, since she believes Benoît killed her father. Benoît claims that he had actually been bribing her father and that he killed himself out of shame.
* LadyOfWar
* TheLastDance: She died in a gunfight with five assassins, taking most of them with her.
* {{Meganekko}}: Whenever she wore glasses, skirting into HotLibrarian territory.
* MsFanservice: She's occasionally subjected to blatant MaleGaze starting from her ''very first appearance'' (in that case it was [[ShesGotLegs her legs]]).
* PromotionToOpeningTitles: Immediately after joining ''and'' leading TheTeam.
* RedemptionEqualsDeath
* SecretlyDying: Aww...
* SexyMentor
* SharpDressedWoMan: After dying in a hail of bullets, Abby commented on how Jenny was always such a sharp dressed lady.
* UnresolvedSexualTension: She and Gibbs have this vibe.
* WhatTheHellHero: Abused her power to try and get revenge on Rene Benoit, the man [[YouKilledMyFather who killed her father.]]
** Her father's still alive. Apparently. It is heavily implied that CIA was taking advantage of [[OmniscientDatabase AFIS]] to make her father appear to be alive, thus [[CassandraTruth discrediting her]] and preventing her from further ruining TheDragon's operation.
* WorkingWithTheEx
* YouKilledMyFather: To La Grenouille. Later she does kill him, but no one figures it out until she's already dead... [[TheUnreveal or was it Trent, actually telling the truth?]]
* YourDaysAreNumbered: Before she was killed, she was sadly already terminally ill.
** In fact, it's implied that she preferred "hail of bullets" to "terminal illness" and that's part of why she acted the way she did leading up to her death.

[[folder:Senior Special Agent Anthony "Tony" [=DiNozzo=] Jr.]]
->'''Played By''': Michael Weatherly
->'''Ziva:''' ''Tony, your dying words will be 'I've seen this film'.''

NCIS' resident lothario. Tony is a former college athlete who decided to become a cop after an incident where he had to leave a girl behind in a burning building while saving her brother. He was recruited to join NCIS by Gibbs from the Baltimore Police Department and has established himself as a highly effective, albeit extremely unorthodox, investigator. Most people consider him to be Gibbs' heir as SAC of the MCRT.

He departs NCIS in the Season 13 finale so that he can focus on raising his daughter with Ziva in the wake of Ziva's death.

* AccidentalMisnaming: Of course, there's the [=McNicknames=], but Tony gets his own share of this from Fornell, who pronounces his name [=DiNotso=] (he says the double z's like 'pizza') and occasionally [=McGee=] calls him [=DiNosey=].
** Fornell's pronunciation is actually how an Italian speaker would pronounce Tony's surname. It makes sense if Fornell has Italian ancestry, as suggested in "Short Fuse" where we see him cooking "spaghetti alla puttanesca" for himself and Gibbs using a recipe from his "nonna" (grandma).
* AffectionateNickname: Zoe Keats calls him "Spider", a name dating back to when they were cops in Philadelphia.
* BecomingTheMask: In season four when he went undercover.
* BelligerentSexualTension: With Ziva.
* BerserkButton:
** Don't '''ever''' betray NCIS or the USA in general (like Agent Lee) or [[HypocriticalHeartwarming make fun of people he makes fun of but you don't know]] (like Det. [=McCadden=]).
** Oh... and don't try to kill him and then think you can work with him.
** And for the love of all things military, leave Ziva alone.
* BewareTheSillyOnes: Do ''not'' let the Cassanova-like personality with all the jokes and snark fool you. He is a trained interrogator and can break anyone given the right leverage.
* TheBigGuy: He's originally the "muscle" of the team and he mentioned that he majored in physical education. After Kate dies, he steps up as TheLancer (though he's the official NumberTwo) with the group's muscle then being filled by {{Tykebomb}} ActionGirl Ziva David.
* BunnyEarsLawyer: Very often Gibbs catches him apparently slacking off, only to then reveal all the investigation and work he's been doing.
** Whenever he's in charge of a case he uses a brainstorming technique he calls "campfire", where the squad roll their chairs into the middle of the bullpen and talk through a conundrum. The rest of the team roll their eyes whenever he calls for one but can't deny that it's an effective tool.
* ButtMonkey: In the early seasons, this was his position for the most part. In the pilot, he was thrown out of a car onto a highway and in the second he was thrown out a plane, he had a parachute in this case.
* TheCasanova: Especially in early seasons, he was seen as wooing a lot of women. After his time with Jeanne, it slowly stopped.
* CatchPhrase: "On it, boss."
* ClearMyName: Twice. First the lab assistant Chip hated him for getting him fired in the past and sought out a complicated, nearly forensic-proof case. Second, Jeanne Benoit claimed to have seen him kill her father, the arms dealer René Benoit ("La Grenouille").
* CrouchingMoronHiddenBadass: He's a clown, but he's a clown who can trick the head of Mossad into confessing to illegal activities and can beat up a mook while tied to a chair.
* DeadpanSnarker: Almost every sentence contains some snark.
* DistressedDude: Generally, Tony is the resident dude in distress, but he usually manages to get himself out of his situations by himself.
* EarlyInstallmentWeirdness: Zig-zagged. In season 1, he's said to have played [[UsefulNotes/{{Basketball}} basketball]] at Ohio State, and went to the Final Four. In season two, he he says that he played ''[[UsefulNotes/CollegiateAmericanFootball football]]'' at Ohio State, and broke his leg in the rivalry game with Michigan. Later seasons {{retcon}} this back to basketball, as seen in "Baltimore," "Rekindled" and "Cadence."
** Also fails to recognize TheMalteseFalcon early in S1 before his cinephile trait was established.
* EverybodyKnewAlready: He tried keeping his relationship with Zoe Keats secret but couldn't hide the positive effect it had on his personality. No one was surprised when he finally admitted it
* ExasperatedPerp: His preferred method of interrogation. Most prominent when he doesn't ask questions, but just sits there, chewing on his tie and playing ''VideoGame/{{Tetris}}'' on his phone.
** He once inverted the trope, pulling it off while ''he'' was the one being interrogated. [[SugarWiki/MomentOfAwesome By the director of Mossad,]] who he successfully aggravated into admitting that he had sent the agent Tony had killed to spy on a meeting of several law enforcement agencies, which were discussing an operation regarding Israel.
* FairCop
* [[FourTemperamentEnsemble Five Temperament Ensemble]]: Sanguine
* FreudianExcuse: One that's something of a TearJerker: It turns out the reason Tony's such a movie buff is because his mother took him to movie theaters a lot when he was a kid before her death; they were even watching a movie when she passed away in the hospital. Ziva notes the {{irony}} that this is the first time Tony's ever mentioned his mother to her.
* GenreSavvy: He's a big movie buff, and will very often find a way to compare the current case to a movie he's seen.
** Occasionally, however, he turns out to be WrongGenreSavvy.
* HandsomeLech: From "Hung Out to Dry":
-->'''KATE''': "Your mind, [=DiNozzo=], runs the gamut from 'X' to triple 'X'."
* HasAType: Four of his five main love interests (Kate, Ziva, EJ, Zoe) on the show are [[ActionGirl action girls]].
* HiddenDepths: He maintains that he coasted through school and shows pride in being kicked out of many expensive prep schools. In Season 12, however, it's revealed that he cleaned up his act while at MilitarySchool and was a model student from that point onwards. He swears Bishop to keeping that fact a secret.
* HeyYou: Calling [=McGee=] Probie or one of many [=McNicknames=].
* JerkJock: He was a member of the Ohio State Buckeyes basketball team when it went to the NCAA Final Four[[note]]In Baltimore, where he rescued a young boy from a house fire. The incident led to his becoming a cop[[/note]]. He also graduated with a degree in Phys Ed.
* JerkWithAHeartOfGold: If you dig deep enough, you may find it, somewhere.
* LadykillerInLove: With Jeanne Benoit; he was undercover at the time, so it wasn't supposed to happen.
** He had a spectacular ''eight year'' will they won't they arc with Ziva, with genuine feelings coming from both parties.
** He's now head over heels for Zoe Keats, an ATF agent and his former partner from the Philadelphia PD. Hilariously, the entire team knew about the relationship before he revealed it because he couldn't hide how happy it made him.
* TheLancer: While he's always been Gibbs' official NumberTwo, it wasn't until Kate dies when he really steps up to this role.
* [[LastMinuteHookup Last Minute Kiss]]: With Ziva, ending 8 seasons of UST in her final episode.
* LikeBrotherAndSister: With Abby and Elle whom he treats like younger sisters. Also treats [=McGee=] like a younger brother. Also {{Zigzagged|Trope}} with Ziva DependingOnTheWriter.
* LimitedAdvancementOpportunities: Director Shepard offered him the chance to lead his own team in Rota, Spain, in Season 4 but he turns it down in favor of keeping an eye on Gibbs in the wake of Gibbs' accident. Shepard warns him that such chances are few and far between. He hasn't been offered a chance to move up in the agency in the eight years since.
* LockedInAFreezer: In a shipping container with Ziva in "Boxed In".
* MilitarySchool: We find out that he attended one on season 12.
* TheMovieBuff: His defining trait outside of being the HandsomeLech
* MrFanservice
* MyFriendsAndZoidberg: Is on the receiving end of this ''twice'' in the episode "Last Man Standing."
* NumberTwo: He easily steps into the role of leader when Gibbs is absent, even demonstrating Gibbs' seeming-precognition and knowing when major developments will happen before they occur.
* ObfuscatingStupidity: In the rare times when he's totally serious, it's almost scary.
** Watch his interrogation room time in "Iced." He may have majored in Phys Ed, but he paid attention in his core classes.
* PersonaNonGrata: After the events of "The Admiral's Daughter," he can never go back to Marseilles again (Despite the fact that the mess in question wasn't his fault).
* PluckyComicRelief: In the first few seasons.
* PornStash: We've never seen it, but it must require a C-5 Galaxy to carry.
** However, in "Bikini Wax," he reveals that he has a subscription to "GSM" ("Get Some Magazine"), and brings in one of the issues from his collection because the victim had a photo shoot in it.
* PromotedToParent: Discovers his daughter (by Ziva) in the Season 13 finale, driving some major life choices.
* PutOnABus: He left the show in the Season 13 finale, having spent a good portion of the preceding season becoming detached from his job and questioning his life choices.
* ReplacementGoldfish: Owns a literal one. Her name's Kate. Now it's up to two, as of season 12, because he has a goldfish named Ziva. (See below.)
* ReferenceOverdosed: His movie references turn this show into this all on his own.
* SharpDressedMan: Several episodes reveal that his wardrobe is a who's-who of expensive name brands. His grousing during the shower scene in "SWAK" is one of the best examples:
-->'''Tony''': This very instant, someone is incinerating my Ermenegildo Zegna suit, my Armani tie, my Dolce & Gabbana shirt, and my Gucci shoes!
* SensitiveGuyAndManlyMan: Manly Man to [=McGee=]'s Sensitive Guy.
%%* SmallNameBigEgo
* SomeoneToRememberHimBy: He discovers, in the Season 13 finale, that he has a daughter with Ziva a short time after learning of Ziva's death.
* SpannerInTheWorks: Tony is often so unpredictable that he can screw over the best laid plans of the villains by simply being his annoying self. This is also his preferred method of interrogation, thinking so far out of the loop that rehearsed defenses are useless, and being so annoying or weird that the suspect is unable to think clearly. This methodology also proves useful when he is being interrogated by the FBI or the Director of Mossad. He even called himself one in the season 7 opener:
-->'''Tony''': I'm the wildcard. I'm the guy that looks at the reality in front of him and refuses to accept it.
* TallDarkAndSnarky
* TenMinuteRetirement: Between seasons 10 and 11, to get the case against Gibbs dismissed.
* TheyDo: With Ziva; they have a daughter.
* TookALevelInBadass: ''Multiple'' levels between seasons three and four, then smaller yet still noticeable levels between seasons five and six, then multiple levels again between seasons six and seven.
* UnorthodoxHolstering: Discussed. Apparently he annoys the NCIS armorers by constantly visiting them to try out different sidearms and carry methods to figure out the coolest combination that works for him.
* UnresolvedSexualTension: A little with Kate, but to a much greater degree with Ziva.
* UrbanLegendLoveLife: Starting in season five. He acknowledges in Season Six that he's going through a dry spell since falling in love while undercover. He just doesn't want anyone to know.
* VitriolicBestBuds: Type 2 with [=McGee=]. They act almost like [[SiblingRivalry brothers]].
** Tony is also very close to Gibbs, but you wouldn't say so from their [[JerkWithAHeartOfGold normal]] [[DopeSlap interactions]]. It's the same story with Kate (which appears at first like a type 1), and with Ziva.
* WackyParentSeriousChild: Has this dynamic with his father ironically given his usual attitude. Though given [=DiNozzo=] Senior is TheCasanova and a ChivalrousPervert [[UpToEleven par excellence]] this is to be expected.
* WellDoneSonGuy:
** Mostly in the early seasons, with Gibbs.
** Also clearly present with his biological father. They're improving.
!Other NCIS Agents and Superiors

[[folder:Director Thomas Morrow]]
->'''Played By''': Creator/AlanDale

* TheBusCameBack: Shows up in "Chasing Ghosts" to tell Vance what Ziva has been up to, as well as trying to keep them from hunting down Ilan Bodnar.
* BusCrash: Is killed in Season 13 by a vengeful ex-MI6 agent, although it's actually recurring character CIA agent Kort covering his tracks.
* BackForTheDead: In season 13's "Return to Sender".
* DaChief: The original one.
* ReasonableAuthorityFigure: Is very understanding and tolerating of Gibbs' CowboyCop tendencies.
* PutOnABus: In the first episode of season three, after accepting an offer to become Deputy Secretary of the Homeland Security.


[[folder:Special Agent Michelle Lee]]
->'''Played By''': Liza Lapira

->'''Tony:''' ''She's even more probie than Probie!''

* ActionGirl: She's not in the field often to show it, but in "Once A Hero" she goes undercover and defeats TheDragon of the VillainOfTheWeek.
* ActionMom
* DoubleAgent
* IHaveYourDaughter: Not her, but the people that were making her be a DoubleAgent.
* TheMole: Framed Langer for her crimes and kills him.
* NerdsAreSexy: She definitely felt this way about Jimmy Palmer during their fling.
* RedemptionEqualsDeath: She became the HumanShield in a standoff for the culprit that kidnapped her daughter and made her the mole. Once she knew her daughter was safe, she gave Gibbs a non-verbal signal [[ShootTheHostage to shoot her]] and by proxy, shooting him as well, killing them both.
* SympatheticMurderer: Despite killing and framing Langer, it's possible to feel bad about the situation she was put in. Even Ziva and [=McGee=] (to an extent) agreed that they may have done the same thing.
* TwoFirstNames: Lee can pass as a given name.
* WalkingSpoiler
* WhackAMole

[[folder:Mike Franks]]
->'''Played By''': Creator/MuseWatson[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/Mike_FranksNCIS_3894.png]]
->''"Don't tempt me, Jethro! I ain't nearly drunk enough."''

* AntiHero: His retired status makes him both willing and able to go into moral grey areas that are too dark for the regular team.
* BadassGrandpa
* BadassBeard
* CoolOldGuy
* CowboyCop
* CynicalMentor: Seems to have been this to Gibbs.
* DiedInYourArmsTonight: He died in Gibbs' arms.
* DopeSlap: The originator InUniverse. He first slapped a Probie Gibbs, who would later inflict the same actions on his team members.
* DyingMomentOfAwesome: He was dying of some illness but he still had enough fight to take on Jason Cobb and actually wound the serial killer.
* GrumpyOldMan: Imagine an older, grumpier ''Gibbs''.
* HeroicBSOD: The Khobar Towers bombing in '96, as well as the lukewarm response to it, prompted him to retire.
* IncurableCoughOfDeath: One of the hints of him having some kind of illness. It would probably have killed him even if Jason Cobb wouldn't have, since Gibbs was already in the process of making a coffin for Mike.
* KnightInSourArmor
* LastEpisodeNewCharacter: Appears in flashbacks in "Hiatus, Part 1", makes proper debut appearance in Part 2.
* PapaWolf: Towards his granddaughter Amira and daughter-in-law Leyla.
* PosthumousCharacter: He appears in flashbacks and in Gibb's dreams in just about every season after his death.
* RatedMForManly
* RetiredBadass
* SecretlyDying: Mike was already dying from what is heavily implied to be lung cancer. Gibbs, at least, knew because Mike had given him plenty of warning so Gibbs could build his coffin. Franks chose go down fighting when Jason Cobb confronted him and was fatally stabbed during the fight.
* UndergroundRailroad: [=S11E4=] revealed he helped smuggle in abused women from Kabul over the years, and give them fake identities taken from deceased servicewomen. It fell apart after his death. He asked Gibbs to help him but Gibbs refused.

[[folder:Gerald Jackson]]
->'''Played By''': Pancho Demmings

One of the initial characters, he was Ducky's first Assistant Medical Examiner on the show before Jimmy Palmer took over that role in Season 3.

* CareerEndingInjury: At the very least it ended his job in NCIS. It's unknown what, if any, work he returned.
* MentorOccupationalHazard: Inverted. Ducky offers himself to be shot instead of Gerald when Ari takes Autopsy under hostage. Ari instead ignores Ducky and shoots Gerald when Ducky and Kate tried to trick him.
* PutOnABus: After his first encounter with Ari led him to leave Autopsy with a gun shot to the shoulder and being kidnapped and released by Ari at the start of season 3, he hasn't been seen since.
* SaltAndPepper: Him and Ducky.

[[folder:Special Agent Paula Cassidy]]
->'''Played By''': Jessica Steen

An NCIS Special Agent who worked at the Pentagon and Guantanamo Bay as an interrogator. She made reoccurring performances over the first four seasons.

* ActionGirl
* HeroicSacrifice: In a split second decision, she saw a suicide bomber come out from behind a hidden passage way. Without hesitation, she jumped onto the man, keeping him in the passage as the door closed. She saved the rest of Team Gibbs and the clerics they were protecting.
* HeroOfAnotherStory

[[folder:Nikki Jardine]]
->'''Played By''': Susan Kelechi Watson
* TheAtoner: To the Iraqi family who's father got shot trying to help her brother.
* HelpMistakenForAttack: Part of her {{backstory}}, her brother was injured in Iraq and when a friendly Iraqi tried to help him, he was killed by US forces.
* NeatFreak: Played with. Nikki is a Germaphobe and always using wipes to clean her hands and things she touches, but (as revealed in the episode ''In The Zone'') is a slob when it comes to leaving stuff lying around.
* WhatHappenedToTheMouse: Vanishes without trace after her ADayInTheLimelight episode ''In The Zone''.

[[folder:Charles "Chip" Sterling]]
->'''Played By''': Michael Bellisario

Abby's first lab assistant, as appointed by the new Director of NCIS Shepard. Only showed up for a four episodes in the first half of season 3.

* EmbarrassingNickname: Abby calls him Chip, which he didn't like but begrudgingly accepted.
* PornStache: Had one in his first episode, was told by Gibbs in his second to shave if off.
* RealLifeRelative: He is the son of producer of the show Donald Bellisario, and brother of Troian Bellisario (Sara [=McGee=]'s actor). He is also the step-brother of Sean Murray (Timothy [=McGee=]'s actor).
* {{Revenge}}: Tried to frame Tony for when he, as a Baltimore cop, got him fired for mishandling evidence. Nearly got away with it too if it weren't for Abby.


[[folder:Special Agent Brent Langer]]
->'''Played By''': Jonathan [=LaPaglia=]

* ClearMyName: After he had been killed.
* ExplainExplainOhCrap: He and the mole are in a sensitive area. As he explains some things to the mole, he realizes he is with the mole. He tries to draw his gun but it doesn't help.
* RedHerringMole: Set up to be the mole by the mole.
* WhackAMole: Subverted, due to him not actually being the mole and being killed trying to stop the mole.

[[folder:Stanley Burley]]
->'''Played By''': Joel Gretsch

Was a part of Gibbs' team before [=DiNozzo=] was hired away from Baltimore PD. Still an active NCIS agent, now working as Agent Afloat on an aircraft carrier.

* BackForTheDead: Narrowly averted.
* HeroOfAnotherStory: He is a successful NCIS agent seen a handful of times in the series.

[[folder:Riley [=McCallister=]]]
->'''Played By''': Michael O'Neill

* {{Jerkass}}: After [=McGee=] reprimanded him for an inaction, he tells him to shut up.
--->'''[=McCallister=]''': Permission to smack your boy with my cane, Gibbs!
* SmugSnake: He wanted to become director of NCIS, so he tried to [[SickbedSlayIng kill Vance while he was hospitalized]]. Vance ends up stabbing him with a knife.

[[folder:SECNAV Phillip Davenport]]
->'''Played By''': Jude Ciccolella


[[folder:Erica Jane "E.J." Barrett]]
->'''Played By''': Sarah Jane Morris

* ActionGirl
* DudeWheresMyRespect: She doesn't like that Gibbs dismisses her as a fellow team leader. To be fair, she is dismissive of the older Gibbs too.
* EveryoneLovesBlondes
* PutOnABus
* RedHerringMole
* ScrewTheRulesIHaveConnections: Averted. She never used her connection to her Uncle the SECNAV to get anything.
* TemporaryLoveInterest: For Tony.
* TomboyishName: Her nickname.

[[folder:Simon Cade]]
->'''Played By''': Matt Willig

* ClearMyName: He goes into hiding after being framed for stealing microchips from the bodies of Watcher 8 fleet members. Tony ends up pursuing him, leading to Cade getting shot and killed by the true thief, Jonathan Cole, who frames Tony for the murder.
* GeniusBruiser: He has an IQ of 160 and played football at Yale.
* RedHerringMole
* SmartPeopleWearGlasses

[[folder:Gayne Levin]]
->'''Played By''': Alimi Ballard

* BlackDudeDiesFirst: As he, Cade, and Barrett enter an abandoned building to look for Jonathan Cole, he and Cade are shot, but it's he who dies.
* MauveShirt

[[folder:SECNAV Clayton Jarvis]]
->'''Played By''': Matt Craven

* AssholeVictim: Killed in the Season 11 opener.
* DroppedABridgeOnHim: He is killed offscreen in the Season 11 opener.
* {{Jerkass}}: Espically to Tony.
* JerkWithAHeartOfGold: He starts treating the team a bit better later on.
* LastEpisodeNewCharacter: Appears in the season 8 finale.
* ReasonableAuthorityFigure: What he ultimately turns out to be.

[[folder:Ned Dorneget]]
->'''Played By''': Matt Jones

A relatively new probationary agent. He's eventually transferred into the cyber division and demonstrates computer skills on par with [=McGee=].

* ButtMonkey: Once left the dentist's office with a bugged tooth implant. Hilarity did not ensue.
* ADeathInTheLimelight: Plays a major role as a cyber-specialist in the multi-part episode starting with "Troll", then gets killed in the second part while evacuating a hotel about to be the site of a terrorist bombing.
* HeroOfAnotherStory: He gets mentioned a lot more than seen, and does a lot of gruntwork.
* StraightGay

[[folder:Richard Parsons]]
->'''Played By''': Colin Hanks

An up-and-comer in the [=DoD=] Office of the Inspector General. He has Gibbs arrested for his questionable methods, hoping to use his prosecution as a launching pad for his own career.

* {{Blackmail}}: Engaged in lots of it to worm his way into his current lofty position.
* BreakTheHaughty: Coming within feet of being blown up can do that.
* CondescendingCompassion: To Ziva in the tenth season finale. He tells about how much he "sympathizes" with her over the murder of her father right before taunting her about his ultimate goal of bringing down Gibbs, who he acknowledges is the only father figure she has left.
* EvilCounterpart: Tony quips that he's like [=McGee=]'s evil twin. He turns out to be less "evil" and more "too ambitious for his own good".
* FillerVillain: For all the threat he was played up to be, he's quickly overshadowed by a larger threat within the CIA and reduced to this. That was prior to his HeelFaceTurn.
* TheFriendNobodyLikes: Not too surprisingly, when he does decide to help and not hinder Gibbs, the rest of his team gives him the cold shoulder.
* HeelFaceTurn: After he gets a front row seat for the bomb that killed [=SecNav=] Jarvis and seriously injured DHS Secretary Morrow.
* IShallTauntYou: One of his ways of getting information from the subjects of his investigation. Notably, he goads Tony by insulting Ziva in his first episode.
* ItsAllAboutMe
* JerkAss
* ObfuscatingStupidity: So freaking much. He starts off seeming nice but comically annoying. He ''quickly'' shows that he is not to be taken lightly and stays one step ahead of the team.
* OutGambitted: Gibbs is conveniently sent on assignment abroad before having to testify, and his team all [[TenMinuteRetirement turn in their resignations]] to accept responsibility for him. Documents about Mike Franks and the murder of the drug lord that killed Shannon and Kelly are burned and shredded, effectively yanking the rug out from under Parsons' case.
* SixthRanger: For Gibbs in the season 11 premiere.

[[folder:Vivian Blackadder]]
->'''Played By''': Robyn Lively

Tony [=DiNozzo=]'s first onscreen partner; appeared only in the two-part pilot on ''Series/{{JAG}}''. It's generally assumed that she was fired after blowing the operation they were on, as Gibbs didn't like her and she's never been mentioned since.

* [[BrotherChuck Sister Judy]]

!Other Federal Agents

[[folder:FBI Agent Tobias C. Fornell]]
->'''Played By''': Joe Spano

-->'''Fornell:''' ''And people say we're bastards?''
-->'''Gibbs:''' ''Only because they know us.''

* AloofAlly: Though he does always want to help if he can even when he is likely breaking rules to do so. Even when he is technically an antagonist, he still wants what's best for Gibbs and his team.
* AlwaysGetsHisMan: Much like Gibbs, both are famed in story for this.
* BigEater: Half of his lines during his guest appearance on ''Series/NCISNewOrleans'' is him telling Pride which restaurants he wants to visit and the list of dishes he intends to eat at each one.
* FBIAgent: Obviously. Fornell is the FBI equivalent of Gibbs.
* HarbingerOfImpendingDoom: Due to being part of a different agency Fornell only shows up when something bad is happening so everyone tends to view his appearance within NCIS headquarters as this.
* HeroOfAnotherStory: Implied for the most part, but we do get glimpses of Fornell's career at FBI. He's their version of Gibbs.
* LikeAnOldMarriedCouple:
** This scene from [[http://www.youtube.com/watch?v=BF-qyJGAvCI "Short Fuse"]] says it best.
** Then there's this exchange in the Season 11 premier:
-->'''Fornell:''' You know I'm not going to kiss you goodnight.\\
'''Gibbs:''' What?\\
'''Fornell:''' You're walking me to my car. We breaking up?\\
'''Gibbs:''' If I could, I would. Unfortunately, I trust you.
* TheMissusAndTheEx: He and Gibbs are a GenderFlip of this trope. (Though by the time the series starts he's divorced from Gibb's ex-wife too.)
* PapaWolf: When his daughter Emily gets kidnapped by a money lauderer as ransom for the money the team confiscated, Fornell tells him this during the ransom call:
-->'''Money launderer''': [Bishop's] got eight minutes to bring me my money, by herself. Once I'm safely away I'll tell you where your daughter is. She's fine, but if you even think about sending anyone else, I'll know, and your daughter will pay the price.\\
'''Fornell''': Okay, but just so we're on the same page; [[TranquilFury if you so much as touch a hair on my daughter's head, so help me God, I will find you, and I will rip the eyes out of your face and shove them so down far your throat that you'll need a proctologist to read the evening paper]].
* PerpSweating: Not seen as often, but he's brutal in the interrogation room.
* TheRival: A [[FriendlyRivalry friendly rival]], but a rival.
* ShotInTheAss: Two episodes into season 11, tying back to the last few seconds of the season 10 finale.
* SixthRanger: Occasionally, when he shows up.
* TheThingThatWouldNotLeave: In the wake of all the trauma he experienced in later seasons, he begins Season 14 having taken residence in Gibbs' living room, eating all the food in the kitchen, watching endless TV, and wearing Gibbs' bathrobe. Gibbs has made it abundantly clear he'd like Fornell to move out, but Fornell is cheerfully oblivious. [[spoiler: After three months of this, Emily tricks him into moving back home by having her entomologist boyfriend seed Gibbs' home with termites. At which point Gibbs moves into ''his'' living room while his place gets fumigated.]]
* UnexplainedRecovery:
-->'''Tony:''' I thought you were dead.\\
'''Fornell:''' Got better.\\
'''Kate:''' I thought he was dead.\\
'''Tony:''' Got better.
* VitriolicBestBuds: He considers Gibbs his best friend.

[[folder:CIA Agent Trent (Thomas) Kort]]
->'''Played By''': David Dayan Fisher

* BackForTheDead: And one episode later, is gunned down by every single field agent on Team Gibbs for murdering Ziva. He says it wasn't his intention to have her killed, but at this point no one cares what his motivations are.
* TheBusCameBack: He's back as of "Dead Letter".
* DeepCoverAgent: CIA agent deep inside Rene Benoit's organization.
* DragonWithAnAgenda: Supposedly once Benoit's NumberTwo, supposedly CIA DeepCoverAgent, it is not clear what he is up to.
* EyeScream: The Port-to-Port Killer gouged out his eye.
* KilledOffForReal: Shouldn't have taken out that hit on Ziva, Kort.
* KnightTemplar: As far as we can make out.
* TheMole: In "Dead Letter", is revealed to have sold nuclear secrets to Russia in 2002.
* NoNameGiven: If we're to believe Jenny, "Trent Kort" is an alias.
* PutOnABus: Leaves the series after "Pyramid".
* SmugSnake: As Gibbs put it, he doesn't hide being a jerk.
* StepfordSnarker: Should've kept your mouth shut.
* YouMonster!: Followed orders up until he was fired. Then he went on a covert rampage. Mind you, NCIS messed up his operation first back in season 4, then used him for information going forward (neither party was very nice about it). His missions included doing some heinous things to people, but it was all sanctioned. Acting on his own to cover his tracks, however, he turns into a monster.

[[folder:Army CID Agent Lt. Col. Hollis Mann]]
->'''Played By''': Creator/SusannaThompson

-->''"If this is going to turn into a pissing match, you'd better bring an umbrella."''

* DistaffCounterpart: To Gibbs. She's even a team leader in the Army's corresponding agency, Army Criminal Investigation Division[[note]]Whereas NCIS is a civilian agency (to keep it independent of military politics) Army CID is primarily made up of active duty soldiers[[/note]] - [[FunWithAcronyms yes, that spells what you think it does]]: usually referred to as Army CID.
* EveryoneCanSeeIt: Her {{UST}} with Gibbs is noticed by the whole team.
** Upon meeting Mann for the first time, Vance asks Gibbs if she's one his ex-wives.
* [[FieryRedhead Fiery Strawberry Blonde]]
* GirlOfTheWeek: Subverted; she appears to be this at first, but it takes her and Gibbs two episodes to get together and they remain together for almost a year. In fact, she's easily the most long-term love interest Gibbs has had on the show.
* HandsOnApproach: Gibbs does this to her in "Grace Period." She doesn't seem to mind that much.
* HeroOfAnotherStory: Her career with CID could easily have been the basis for a SpinOff.
* JurisdictionFriction: This is how she meets Gibbs and what brings them back together.
** It happens again when she returns from Unretirement.
* LoveInterest: To Gibbs in her first run of apperances. She later married someone else.
* PutOnABus: To Hawaii.
** TheBusCameBack: She now works for the Department of Defense.

[[folder:CGIS Agent Abigail Borin]]
->'''Played By''': Diane Neal

* AmbiguouslyBi: In "Oil and Water", she and Tony are chasing a suspect, which she [=KOs=] with a left-handed swing of an oar. Her explanation is...interesting.
-->'''Borin''': College softball.
-->'''Tony''': Southpaw?
-->'''Borin''': I swung both ways.
* BerserkButton: Don't joke about blowing stuff up. Her temper's much more explosive.
* BrokenBird: Her lover was killed in an IED explosion with two other marines. She had to pull his mangled body out of the water.
* DistaffCounterpart: To Gibbs, to the point that the ''entire team'' lampshades it. So naturally the following apply: DeathGlare, DopeSlap, GutFeeling, MustHaveCaffeine, RuleNumberOne and RightBehindMe.
* {{Expy}}: This is an extreme case of ActorAllusion, but Borin is [[Series/LawAndOrderSpecialVictimsUnit ADA Casey Novak]] as a cop, minus the emotional trainwreck but it looks like she could be headed that way. It's more than likely some of her lines are recycled. Bonus points for the softball playing and [[AmbiguouslyBi commentary on her swinging]].
* FairCop
* HeroOfAnotherStory: She's the Gibbs of CGIS so you better believe she's having adventures bringing down bad guys off screen.
* LastNameBasis: To avoid the OneSteveLimit with Abby Sciuto.
* MustHaveCaffeine: It's implied she and Gibbs even take their coffee the same way.
* PerpSweating: At one point, she and Gibbs double team someone.
* OnceASeason: She proved to be so popular that her appearances tend to be this. [[LampshadeHanging Lampshaded]] really, really hard at the end of one of them:
-->"Same time next year, Gibbs?"
* OneSteveLimit: Averted for a gag in her first appearance. She asks Gibbs to call her 'Abby', which he immediately refuses to do. It becomes clear as to why when he takes her to the NCIS lab.
-->'''Abigail Sciuto''' and '''Abigail Borin''' extend their hands and simultaneously say: "Abby."
** From then on, she's addressed as "Agent Borin" or simply "Borin" with Abby Sciuto being the only one to call her "Abby" or "Other Abby" for fun. If they are both in the same room, they sometimes get collective addressed as "Abbses".
* RuleNumberOne: Never make excuses.
* StatuesqueStunner

[[folder:Ray Cruz]]
->'''Played By''': Enrique Murciano

Ziva's boyfriend and near-fiancee in seasons 8 and 9, and also a CIA field agent. [=DiNozzo=] refers to him as [=CIRay=]. Ziva dumps him after he kills someone in the process of trying to finish up a hit he botched overseas, and Ray is arrested for the murder.

[[folder:Dr. Samantha Ryan]]
->'''Played By''': Creator/JamieLeeCurtis

At work, a creepy-as-hell [=DoD=] psy-ops expert who's almost a match for Gibbs in the mindgames department. At home, a single mother with a divorce from an abusive husband in the past. Needless to say, she and Gibbs hit it off very well. As of the end of season 9, in hiding after CEO-turned-terrorist Harper Dearing got her abusive ex sprung from prison.

* BelligerentSexualTension: With Gibbs. They match very well, but they put each other on the defensive so frequently that some of their interactions can be quite angry.
* {{Gaslighting}}: What Ryan does for a living, and not just to military targets.
* PutOnABus
* RiddleMeThis: She always tells Gibbs what she thinks he needs to know, but for some reason always does so in the most infuriatingly roundabout ways possible. (One tip was delivered on the inside of a pizza box.) Gibbs does not like this.
* SilverFox: Jamie Lee may be the most triumphant example for women right now.
* TwoFirstNames

[[folder:Diane Sterling]]
->'''Played By''': Melinda [=McGraw=]

Gibbs' second wife. She was also married to Fornell, whom she has a daughter. She works for the I.R.S.

* AmicableExes: Mostly with Gibbs. Not so much with Fornell.
* BoomHeadshot: Via Sergei as CallBack to Kate's death.
* CallBack: Her death is patterned over Kate's death in the season 2 finale.
* DiedInYourArmsTonight: She dies in Gibbs arms, though it happened in broad daylight instead of the night like the trope suggests.
* DiesWideOpen: Via Boomheadshot courtesy of Sergei. While he he doesn't seem to mind if she dies this way, it sure added to the CallBack to Kate's death.
* FieryRedhead: As expected for Gibbs' ex-wife.
* TheLostLenore: For both Gibbs and Fornell, much so for the latter.
* TheMissusAndTheEx: She gets along with Gibbs' second wife just fine.
* MrsRobinson: She got... "cuddly" with [=McGee=] at one time.

[[folder:Mossad Director Eli David]]
->'''Played By''': Michael Nouri

-->''"Tell me, Leon. Are we winning?"''

Ziva's father and head of the Mossad. He is utterly ruthless in his pursuit of Israel's enemies, often using the same illegal tactics as them to hunt down and kill them.

* AbusiveParents: He uses his own children as tools in his schemes. One (Ziva) ends up killing another (Ari Haswari) and on Eli's orders.
* AccidentalPublicConfession: Performs one because Tony goaded him not just on Ari turning traitor but an apparent habit for his agents to go rogue in general. He admits none of his men ever do something without his say, including the one Tony just killed in self-defense. The second worst part for Eli, first being Ziva saw this, is Tony was originally being interrogated by him and the guy turned it around without Eli realizing it.
* {{Antihero}}
* BadassGrandpa
* BadassIsraeli
* BadassLongcoat
* TheChessmaster
* CoolOldGuy
* CulturedBadass
* FallenHero
* FatalFlaw: PatrioticFervor.
* HeWhoFightsMonsters: Eli is easily as bad as the terrorists that he fights, to the point that he drives his own son into becoming one.
* KnightTemplar
* MoralMyopia: He has repeatedly violated Israel's treaties with the USA by ordering operations on US soil, which have resulted in Mossad agents killing a number of American federal agents. When Tony is forced to kill a Mossad agent who resisted being arrested for the murders he committed under Eli's orders, Eli treats it as a horrible offense against Israel by the USA and tries to have Tony extradited.
* RatedMForManly
* RedemptionEqualsDeath: To what extent is arguable, considering that before his death, he murdered a witness to his entry into the US as part of his "redemption".
* ShellShockedVeteran: He shows weariness with the world of intrigue with every breath.
* TheSpymaster
* TwoFirstNames
* WasItReallyWorthIt: ''"Tell me, Leon. Are we winning?"'' His actions ultimately turn both of his children against him.

[[folder:Michael Rivkin]]
->'''Played By''': Merik Tadros

* BadassIsraeli: Tony was only able to kill him by virtue of the fact that he was ''extremely'' drunk, and even then he put up a hell of a fight.
* ProfessionalKiller

[[folder:Malachi Ben-Gidon]]
->'''Played By''': TJ Ramini

* HeroOfAnotherStory

[[folder:Ilan Bodnar]]
->'''Played By''': Oded Fehr

Eli David's former protege, and the one responsible for having him killed.

* BadassIsraeli
* BatmanGambit: He knew that NCIS would analyze the background of his video chat with Ziva, so he put up a false background to divert authorities away from him.
* EtTuBrute: From Ziva -- Eli never had the chance to find out.
* EvilFormerFriend
* SiblingRivalry: Played with. Though Bodnar isn't actually related, Ziva always resented him because she felt like he was trying to be Eli's son.

[[folder:Orli Elbaz]]
->'''Played By''': Marina Sirtis

Eli David's replacement as the head of Mossad. She doesn't get along with Gibbs right out of the gate.

* YourCheatingHeart: Had an affair early in her career with Eli David that led to David's divorce from his wife, and years of bad feelings from Ziva. Ziva had considered Elbaz to be sleeping her way to the top, but reluctantly admitted that she may have genuinely loved him when she came to the US to see what was going on with the murder investigation.


[[folder:Ari Haswari]]
->'''Played By''': Rudolf Martin

-->''"Sorry, Caitlin."''

* AffablyEvil
* ArchEnemy: To Gibbs in the first three seasons.
* BadassBiker
* BadassIsraeli
* BastardBastard
* BecomingTheMask: Was essentially conceived and raised to be a mole in Hamas.
* BigBad: Of seasons one and two, plus the first two episodes of season three.
* ColdSniper
* CulturedBadass
* DeadlyDoctor
* DeathSeeker
* DisproportionateRetribution: His motive behind everything he does to Gibbs and NCIS in general? Gibbs reminds him of his father.
* DoubleAgent
* EvenBadMenLoveTheirMamas: It is implied that he cared for his late mother and believes his father is responsible for her death.
* EvenEvilHasLovedOnes: Ziva still loved him, even after what he had done. And he had an Israeli doctor and childhood friend he loved and planned on proposing to before BecomingTheMask.
* EvenEvilHasStandards: He found Gerald's inability to drive Ducky's vintage Morgan painful to listen to or see.
* EvilCannotComprehendGood: His fatal mistake was that it didn't even occur to him that Gibbs would really trust Ziva to watch his back and assumed Gibbs was alone when he confronted him.
* GeniusBruiser
* GoneHorriblyRight: His father raised him to be a monster... who hated him for it and did everything he could to destroy what his father had worked for.
* HeroKiller: The series' first. He even killed Kate to prove it.
* KarmicDeath: He dies via a BoomHeadshot, the same way he killed Kate.
* PosthumousCharacter: He still have effects in the story long after his death.
* RevengeByProxy: He [[WomenInRefrigerators stuffs]] Kate into the fridge and tries to do the same to Abby, aware that it's the best way to make Gibbs suffer. He also tries to kill Jenny, snipes at [=McGee=] (who lucks out by unknowingly moving out of the way at the last second), and tries to kidnap Ducky. The only member of Team Gibbs he doesn't single out is Tony.
* SmallRoleBigImpact: Unusual to invoke this on an ArcVillain, but he was introduced two-thirds of the way through season one and died at the beginning of season three after only appearing in a grand total of five episodes, and is still an occasional influence of the team, who they work with, and who they go up against as of season ''twelve''.
* SmugSuper: He's good and he knows it.
* TallDarkAndSnarky
* {{Tykebomb}}: All grown up. Eli David deliberately fathered him on a Palestini woman so that he would have a child he could raise to infiltrate Hamas.
* YouKilledMyFather: Blamed his father for his mother dying in an Israeli attack on the Palestinians while Ari himself was away visiting his father. This was his StartOfDarkness.

[[folder:Rene Benoit]]
->'''Played By''': Creator/ArmandAssante

* AffablyEvil
* ArmsDealer
* TheChessmaster
* CombatAestheticist: In a strategic rather then one-on-one fashion. If he wants someone out of the way he uses ThePlan rather than just ordering a hit because the latter would be too crude for a ManOfWealthAndTaste.
* TheDon
* EvenBadMenLoveTheirMamas: [[InvertedTrope Or in this case]], their children: his daughter Jeanne.
* EvenEvilHasLovedOnes
* FrenchJerk
* ManOfWealthAndTaste: He has a fondness for fine wine.
** It was actually cognac, not wine, that he and Ducky drank when they met.
* NWordPrivileges: Only a French guy could give himself the codename ''La Grenouille'' (the Frog).

[[folder:Mamoun Sharif]]
->'''Played By''': Enzo Cilenti


[[folder:Colonel (ret.) Merton Bell]]
->'''Played By''': Creator/RobertPatrick

* BigBadWannabe
* {{Jerkass}}
* OffWithHisHead
* YouHaveOutlivedYourUsefulness: Paloma has Jason Dean kill him as part of her plan to frame Gibbs.

[[folder:Jason Paul Dean]]

* BodyguardBetrayal: Kills Bell after Paloma makes him a better employment offer.
* TheDragon: To Bell, and Paloma Reynosa.

[[folder:Alejandro Rivera]]
->'''Played By''': Marco Sanchez

* AmoralAttorney: Is a ADA, but is working with the cartels.
* BrotherSisterTeam: With Paloma.
* FauxAffablyEvil
* FeudingFamilies: With Gibbs.
* YouKilledMyFather

[[folder:Paloma Reynosa]]
->'''Played By''': Jacqueline Obradors

* AloofDarkHairedGirl
* BigBad: Takes over for Colonel Bell in season 7.
* BrotherSisterTeam: With Alejandro.
* FauxAffablyEvil
* FeudingFamilies: With Gibbs.
* YouKilledMyFather

[[folder:Jonas Cobb, The Port-to-Port Killer]]
->'''Played By''': Kerr Smith

* AxCrazy
* BeingTorturedMakesYouEvil
* BigBad: Season 8.
* DarkIsEvil
* HeroKiller: He killed Mike Franks.
* SanitySlippage: The psychological abuse of Operation Frankenstein drove him insane after he made his first kill for the project.
* SerialKiller
* SuperSoldier
* TrainingFromHell: Deconstructed.
* {{Tykebomb}}: Downplayed.

[[folder:Jonathan Cole]]
->'''Played By''': Scott Wolf

* RogueAgent
* RedemptionEqualsDeath: He is killed trying to disarm a bomb planted by Dearing.

[[folder:Harper Dearing]]
->'''Played By''': Richard Schiff

* BigBad: Of season nine.
* TheChessmaster
* CrazyPrepared: Mutiple times, but his most notable instance was during an FBI sting operation in which he asked to 'use the bathroom.' When the SWAT team kicks down the door, all they find is an open window, and his bag left behind. [[OhCrap And then a cellphone inside starts ringing...]]
* FakingTheDead: Tries this to escape NCIS in the premiere of season ten by blowing up a car with his brother's remains inside. Gibbs doesn't buy it and manages to uncover the truth.
* MisplacedRetribution: Blames NCIS for transferring his son to another Naval ship, and the Navy itself for a flaw in their systems (which they were correcting) for his son's death. Instead of, ya know, the terrorists who actually killed him.
* RoaringRampageOfRevenge
* WesternTerrorists

[[folder:Sergei Mishnev]]
->'''Played By''': Alex Veadov

* AvengingTheVillain: He is Ari's best friend and maternal half-brother, and he's out for Gibbs' blood to avenge him.
* BashBrothers: He and Ari are a villainous example of this trope. Literally.
* BeardOfEvil: Sports a BadassBeard and is definitely evil.
* BestServedCold: He waited a decade after Ari's death to take his {{Revenge}}.
* BigBad: Of season twelve.
* BoomHeadshot: How he killed Diane. He dies in the same manner from the hands of Fornell.
* CallBack: His ways of getting into Gibbs is mimicking the deaths of Jenny Shepherd, Mike Franks, and most notoriously, Caitlin Todd, the first two for TheTeam's cases, the last one is how he killed Gibbs' third ex-wife, Diane. His own death is a near-reproduction of Ari's: a single shot through the forehead.
* ColdSniper: Whether he is actually one or he only did it as a CallBack to his late best friend is uncertain.
* KarmicDeath: He dies via BoomHeadshot.
* MixedRace: His father is Russian and his mother is a Palestinian Arab.
* VillainousBreakdown: When his final showdown is with [[UnknownRival Fornell]], and not Gibbs:
-->''What is this?''
* VillainousFriendship: With Ari.
* YouKilledMyFather: Or best friend (and half-brother) in his case.

!Agents' Family Members

[[folder:Shannon and Kelly Gibbs]]
->'''Shannon is Played By''': Aviva Farber and Darby Stanchfield
->'''Kelly is Played By''': Mary Matilyn Mouser, Brenna Radding and Sam Schuder

* DeathByOriginStory: It was their deaths that made Gibbs into the agent he is today.
* KillTheCutie
* {{Posthumous Character}}s

[[folder:Jackson Gibbs]]
->'''Played By''': Ralph Waite

* ActorExistenceFailure: Ralph Waite passed away in February 2014. The season 11 finale became an episode in his honour, with his [[TheCharacterDiedWithHim character died]] after suffering from a stroke.
* BadassGrandpa: Though technically, he isn't a grandfather anymore, he's still old and badass.
* CoolOldGuy
* DadTheVeteran: He served in WWII as a fighter pilot.
* LikeFatherLikeSon: When Paloma Reynosa comes to kill him in "The Spider and the Fly"
-->'''Reynosa:''' But we have so much to talk about.
-->'''Jackson Gibbs:''' From what I hear, you didn't come to talk. ''(pulls his shotgun)''
-->'''Reynosa:''' You are just like your son.
-->'''Jackson Gibbs:''' No, ma'am. He's just like me.
* RetiredBadass
* WellDoneDadGuy: Jethro blamed him for losing his mother. Their relationship has been slowly healing.

[[folder:Anthony [=DiNozzo=] Sr.]]
->'''Played By''': Robert Wagner

Tony's father, a failed entrepreneur who likes to live large and has always been a distant and disappointing father to Tony.

* ChivalrousPervert: He turns the charm up to eleven whenever there's a woman present (and apparently has had a long string of lovers) but is always polite and never untoward anyone. Ziva and Abby like him and flirt right back, which is saying something.
* ConMan: Junior thought that Senior was one for most of his life. While it's true that Senior's been using his charms to mooch off of friends and acquaintances, Senior assures his son that he goes into his various ventures with pure intentions and tries to make an honest profit for himself and his investors but hasn't had the best of luck in the past several decades.
* CoolOldGuy: Much younger people hang onto his every word and he's always willing to impart advice (although it's usually something superficial that sounds deep) to them.
* DisappearedDad: He and Tony were never close to start out with but a decades-long rift formed after the death of Tony's mother as both retreated within themselves to deal with the grief. Senior didn't help matters by shipping Tony off to boarding schools and abandoning him in hotels during vacations.
* HiddenDepths: Once managed to knock out a weapon dealer's bodyguard with one punch to the face. In his later years wanted to find a purpose in his life, and started to aid a homeless shelter's inhabitants whith his connections and apparent wealth, such as giving one guy a brand new pair of shoes.
* TheLoad: At least, this is what Junior's attitude towards him often is -- whenever Senior blows into town, he tends to drag Junior into all sorts of unwanted situations.
* LovableRogue: He's a wheeler dealer who oozes charm. Only Junior and Gibbs look at him with wary eyes and, even then, it's only to make sure Senior doesn't get into too much trouble.
* LikeFatherLikeSon: It's pretty obvious where [[HandsomeLech Junior]] [[ChivalrousPervert got his]] [[TheCasanova personality from]].
* MockMillionaire: He is a formerly wealthy businessman, who is trying to keep up the appearance that he is still wealthy.
* SilverFox: Has the knack for charming any woman he crosses.
* WackyParentSeriousChild: Shares this dynamic with Junior. Given how much of a goofball Junior can be, that's saying something.

[[folder:Jackie Vance]]
->'''Played By''': Paula Newsome

-->''"You are my partner now."''

Leon's wife, who is somewhat exasperated with the hours he has to work and the toll it has taken on their personal lives.

* ADeathInTheLimelight
* ApronMatron
* BattleCouple
* HappilyMarried: To Leon.
* MamaBear
* SassyBlackWoman: Downplayed.

[[folder:Dr. Rachel Cranston née Todd]]
->'''Played By''': Wendy Makkena

Offhandedly mentioned (but not by name) as Kate's sister in Miami in season one, Cranston managed to get assigned psych eval duty on Gibbs' team just so she could meet Kate's coworkers.

* AffectionateNickname: Tony refers to her as "Dr. Kate's Sister".
* BrainyBrunette
* ChekhovsGunman: Kate casually mentioned her in a season 1 episode.
* CoolBigSis
* TheGhost
* HappilyMarried
* HospitalHottie

[[folder:Sarah [=McGee=]]]
->'''Played By''': Creator/TroianBellisario

[=McGee=]'s sister. Asks for his off-book help when she finds herself accused of murder. Returns later as an offstage character during [=McGee=]'s father's funeral.

-->'''Sarah:''' But he loves NCIS...
-->'''Gibbs:''' Evidently he [[BigBrotherInstinct loves you more.]]

* BigBrotherWorship
* BrainyBrunette
* ClearMyName
* DistressedDamsel
* GirlNextDoor
* IntelligenceEqualsIsolation: When she is upset she goes to a stray corner of the library to cry.
* LaserGuidedAmnesia
* NerdsAreSexy: She is a great book lover and a great looker.

[[folder:Breena Slater]]
->'''Played By''': Michelle Pierce

* DatingWhatDaddyHates: Breena's father initially doesn't think much of Palmer and believes she can do much better.
* HappilyMarried: With Jimmy starting season 10.

[[folder:Jake Malloy]]
->'''Played By''': Creator/JamieBamber

Bishop's husband. He works as an attorney for the National Security Agency. He also does the near-impossible by becoming actual friends with Gibbs, to the point where they have a biweekly racquetball match and chat on the phone almost daily.

* {{Adorkable}}: Abby outright calls him "adorable". Then there's his [[SexySpectacles glasses]] and his school girl-like gushing over Gibbs and the team. He later seems similarly awestruck at Ellie's efficiency.
* DerailingLoveInterests: Starts out as an adoring, loving, supporting husband to Ellie and clearly becomes even more enamored of her after seeing her in action in "Grounded". But within a year, he admits that he's been having an affair with a coworker. The 180 was so abrupt that the show itself seemed to lampshade it when Ellie tells [=DiNozzo=]and [=McGee=] about this and they ask "Are you sure?", as if they find this as inexplicable as the viewer.
* HappilyMarried: He and Bishop were very much in love, but their jobs caused some tension. When they both worked at NSA, they could freely talk about their days but when Bishop moved to [=NCIS=], Jake became legally prohibited from divulging anything about his work to his own wife so all they could talk about are the murders Bishop investigates. With this, the marriage became increasingly strained, with his workplace affair putting the final nail in the coffin, and they are now divorced.
* HelloAttorney: He's played by Creator/JamieBamber, so natch.
* {{Megane}}
* {{Retcon}}: Bishop originally said that she and Jake knew each other in college, but Jake tells a story where they first met at the NSA.
* TheUnseen: He spent a season and a half only being mentioned in passing or unheard on the other end of phone calls with Bishop before he made an appearance on the show. He did manage to help [=NCIS=] from afar by getting Bishop and Tony a [=NSA=] satellite feed when Gibbs and [=McGee=] were shot down in Russia.
* WeUsedToBeFriends: He was on good terms with Gibbs' Team, but all friendliness towards him went out the window once the affair came to light.
* YourCheatingHeart: Has an affair with a coworker at the NSA after Bishop joins NCIS. Bishop does not take it well, and all her teammates take her side in the matter.

[[folder: Delilah Fielding]]
->'''Played By''': Margo Harshman

[=McGee=]'s LoveInterest starting from late season 10 to the present; the two of them get married at the end of Season 14. She works for the Department of Defense and helps Team Gibbs during their interagency cases from time to time.
* BrainyBrunette: She's the senior intelligence analyst at the DOD.
* DisabledLoveInterest: She and [=McGee=] began dating before the bombing that paralyzed Delilah from the waist down, and a main factor in their continuing relationship was both of them coming to terms with what had happened. They marry at the end of Season 14.
* HandicappedBadass: After getting caught in a bomb blast in "Kill Chain", she is confined to a wheelchair. Nonetheless, that doesn't stop her from wanting to try skydiving. Or even going undercover.
* HappilyMarried: To [=McGee=] as of the end of Season 14.
* NiceGirl: The first for [=McGee=]. One of his first love interests tried to kill him.
* OfficialCouple: With [=McGee=].

[[folder:Tali David]]

The daughter of Ziva David and Tony [=DiNozzo=].

* [[DeadGuyJunior Dead Girl Junior]]: Named after Ziva's long-dead sister.
* [[SomeoneToRememberHimBy Someone to Remember Her By]]: She is all that Tony has left of Ziva.

[[folder:Luca Sciuto]]
->'''Played By''': Tyler Ritter
The adopted brother of Abby Sciuto, first appears in Season 13 "Sister City" and the CrossOver episode of the same name on ''Series/NCISNewOrleans''. TheOneWith whom she grew up, not the long-lost biological one.

* AllLovingHero: In order to help Eva, the Russian spy, he obstructs the New Orleans team by setting ablaze an oyster bar.
* GoodIsDumb: He trusts everyone except for the two agency branches who are trying to protect him. He initially feared that he killed the victims on the plane with food poisoning.
* ThePollyanna: He has ''ridiculously'' good faith in people.

%%[[folder:Kyle Davis]]
%%->'''Played By''': Daniel Louis Rivas

%%Abby's biological brother, introduced in Season Nine's "Enemy on the Hill."

%%*FriendToAllLivingThings: Certainly implied, given that he works at an animal shelter and has a pet parrot.

!Other Characters
[[folder:Jeanne Benoit]]
->'''Played By''': Scottie Thompson

The estranged daughter of Rene Benoit, and a doctor in a DC-area hospital. Director Shepard sent Tony to seduce her to get information on La Grenouille, but [[LadykillerInLove things got complicated.]] Eventually married and settled down before NCIS came back into her life 8 years later.

* HospitalHottie
* ShipSinking: In a most brutal fashion. When she found out about her father being killed, she blamed Tony, who was forced to claim he never loved her.

[[folder:Margaret Allison Hart]]
->'''Played By''': Rena Sofer
* DoubleAgent: Originally worked for Colonel Bell to plague Gibbs at every turn, but would later aid Gibbs several times after defecting from Bell's camp.
* HelloAttorney

[[folder:Damon Werth]]
->'''Played By''': Paul Telfer

A marine who is revealed to have used steroids.

[[folder:Amanda Kendell]]

From "The Admiral's Daughter"

Supposedly ditzy admiral's daughter who uses her father's high position to allow her to credibly spend time partying with the children of powerful and dangerous foreigners, while stealing their parent's secrets for American intelligence.

-->[[{{Tsundere}} Be careful...she bites.]]

* BigBrotherInstinct: Big ''sister'' instinct in this case; she goes far out of her way to protect her main asset.
* DaddysGirl: You can really tell that from the way [[SugarWiki/HeartwarmingMoments she hugs him]] after she comes in from the cold.
* DeadpanSnarker
* DeepCoverAgent
* TheDitz: Less so in reality then in appearance.
* EveryoneHasStandards: Tony's reaction. Even he thinks she and her fellow partyholics are stupid and shallow.
* ExactlyWhatItSaysOnTheTin: Yes, the episode is about an admiral's daughter.
* FieryRedhead
* HeroOfAnotherStory
* MilitaryBrat: With a rather ironic emphasis on the "brat" part.
* MoreThanMeetsTheEye
* NonIdleRich: Even before becoming involved in covert warfare she was the top of her class at college.
* RichIdiotWithNoDayJob: This is her ''cover.''
* SpoiledSweet: She is a reasonably likable though sassy person, even when you just know her as a stupid, gluttonous, partyholic.
* {{Tsundere}}

[[folder: Dr. Cyril Taft]]
->'''Played By''': Jon Cryer

The doctor who saves Gibbs's life in the Season 13 Premiere "Stop the Bleeding". They later become friends.
* DeadpanSnarker: Compares Gibbs's surgery to deep-sea diving.
* TheMedic: He's a doctor with his private practice and a Navy Reserve Captain.
* OutlivingOnesOffspring: Two years prior to meeting Gibbs, his son Paul died from cancer.

[[folder: Agah Bayar]]
->'''Played By''': Tamer Hassan

A Turkish ArmsDealer.
* EvenBadMenLoveTheirMamas: Bayar gets [[TranquilFury quietly pissed]] when Tony uses his mother as leverage to get his help on a case.