%% ZeroContextExample entries are not allowed on wiki pages. All such entries have been commented out. Add context to the entries before uncommenting them.

[[folder:NCIS agents]]
[[caption-width-right:239:"Is this an interrogation or a date?"]]
!!G[[spoiler:risha]] Callen (Chris O'Donnell)
%%* ActionGenreHeroGuy
* BrokenPedestal: Is a bit upset with Hetty when he finds out he's just one of many agents she's recruited and trained from broken homes. He seems to forgive her though.
* ButNotTooForeign: Son of an [[spoiler:ex-Russian Army officer imprisoned in a gulag camp in Siberia]] and a Romanian mother.
* CombatPragmatist: As a contrast to his partner's more typical fighting style.
* DeadpanSnarker: To give just one example, Callen and Hetty are in a graveyard remembering the dead. Hetty remarks she wants to just be gone: no flowers on the grave, etc. Callen says it won't happen, because he hears Granger's going to have her stuffed.
* FeudingFamilies: The almost 70 year old feud between Callen's family and the Comescu family is the reason why he is an orphan.
* HeterosexualLifePartners: With Sam.
* HonoraryUncle: Sam's son Aiden calls him "Uncle G" in [=S7E11=], "Cancel Christmas".
* LastNameBasis: At one point, Callen asks Hetty why she never calls him by his first name (though she usually calls most of the other agents by their last names, too). She responds, "It's not a name. It's a letter."
* LastOfHisKind: Callen is apparently the only living member of his family, which a certain Eastern European crime family has been hellbent on wiping out.
* MarriedToTheJob: Callen. It worries Hetty a lot.
* MysteriousPast: Hell, he doesn't even know his own first name.
** It's finally revealed to be [[spoiler:Grisha]] in [=S7E16=], "Matryoshka, Part 2".
* NoNameGiven: See MysteriousPast for more details.
* {{Omniglot}}: G can speak English, Arabic, French, German (Which some people says has an Austrian accent), Italian (With a Northern accent), Polish, Russian and Spanish. He says that he can speak Czech and Romanian. In "Allegiance", he can speak Turkish. But Sam chews him out for not speaking the right words. G retorts that he ''intended'' to call Deeks a scruffy rodent.
* OneLetterName: Due to the paperwork with his full name on it getting lost by the foster system.
* OrphansOrdeal: His time in foster care was rather rough.
* ParentalAbandonment: His father is a question mark, and [[spoiler:his mother was killed by the Comescus. As of Season 7, he's met his DisappearedDad, though]].
* TraumaInducedAmnesia: Callen witnessed his mother's murder but suppressed the memory most of his life.

[[caption-width-right:229:"Yeah, I see where you're going with this. Popeye ate spinach, Popeye was a sailor, so... we're looking for a crew member with giant forearms, smoking a pipe."]]
!!Sam Hanna (Music/LLCoolJ)
* BaldOfAwesome: Awesome guy despite having a bald head.
* BigBrotherInstinct: According to Nate, it's his biggest weakness: trying to protect everyone.
* CulturedBadass: Among other things, he's a trained sommelier.
* CunningLinguist: If there's a foreign language the team needs, Sam probably has it.
* FanBoy: keeps the complete run of ComicBooks/SilverSurfer comics in a national security-grade safe, and is a big fan of ComicBooks/BlackPanther.
-->"Not just 'cause he was a brother who was richer than [[ComicBook/IronMan Tony Stark]]. T'Challa was a leader, he was a president, he was a superhero all at the same time. He was all about justice."
* GeniusBruiser: A former Navy SEAL and all around ScaryBlackMan. As previously mentioned he speaks three additional languages fluently and can handle himself in Farsi, and he has extensively studied sharia law and Literature/TheQuran. (He was also a Junior Math Olympian as a child.) {{Justified|Trope}}: They don't let DumbMuscle into the [=SEALs=].
* HappilyMarried: Although it isn't brought up much, to the point where Kensi and Deeks were very surprised when he offhandedly brought it up while interrogating a suspect. Callen knew about them, though. Sadly, Michelle's death has ended this.
* HeroOfAnotherStory: His time with the [=SEALs=] in various theaters from the Balkans to the Middle East.
* HeterosexualLifePartners: With Callen ever since they worked in OSP for years.
* ItsPersonal: In cases involving [=SEALs=]. And his wife's death. And that one case where a girl is BuriedAlive, as it brings back some ''very'' bad memories for him.
* JackBauerInterrogationTechnique: Sam dabbles in threatening people with this. For obscure reasons, despite this being caught on camera, the confession that results is never questioned.
* LimitedWardrobe: His [[http://ncis.thetshirtpainter.com/wp-content/plugins/rss-poster/cache/db7c8_ll-as-sam-hanna_333x500.jpg outfit of choice]] seems to be long-sleeved, four-button Henley shirts in assorted solid colors.
* LivingEmotionalCrutch: For Callen. It's said that "his partnership is the only stable thing in his partner's life."
%%* TheLancer
* {{Omniglot}}: Sam speaks native English with Arabic, Japanese and Spanish. He's familiar with Farsi, but he didn't speak the language for a long time. In "Allegiance", he can speak Korean. But G chews him out for not speaking the right words.
* PapaWolf: When his son's MilitarySchool gets taken over by terrorists, he leads the charge to take them out.
* ParentalAbandonment: At least to his kids. The only thing Sam doesn't like is that extended hours makes him miss out on his kids' lives like school graduation.
* ScaryBlackMan: He uses his height and musculature to intimidate when he's working or using an alias, and even with his coworkers, he carries a strong aura of "Do '''NOT''' mess with me."

[[caption-width-right:212:"Anybody want to put a leash on him before we go another round right here?"]]
!!Kensi Blye (Daniela Ruah)
* ActionGirl: She's an experienced OSP agent who can stand on her own during fights.
%%* TheBigGuy
%%* ClearMyName
* DisappearedDad: He died.
* EyeScream: To a degree. Kensi - and, of course, the actress - has an unusual birthmark ''on the white of one of her eyes'' which gives her a distinctive look (but otherwise has no effect on her vision). Viewers who might not be aware of this unusual trait might think that Kensi, or the actress, has some sort of eye injury or a ''completely dark eyeball'' depending on the lighting and camera angle. In reality, of course, neither is the case.
* FriendlySniper: She enjoys the usual camaraderie with her colleagues, has an "are they or aren't they" relationship with another agent, and often takes part in the show's humor. And the in the next scene she is cold-bloodedly sniping bad guys to death. She doesn't fit the "loner" aspect of the trope, but otherwise ... shudder.
* GoodIsNotSoft: A kind-hearted character, the subject of a longstanding ship pairing ... with one of the highest body counts of any female character in network TV history. See also Friendly Sniper, above.
* {{Ladette}}: Views of her home are basically that of a bachelor pad.
* MsFanservice: Perhaps the inevitable result of being the only female regular under the age of 40 (until Nell came along, but Nell's not that sort of character), although she's fairly mild compared with some - but a lot stronger than Ziva David.
* {{Omniglot}}: She can speak English with Portuguese and Spanish. (In real life, Daniela can speak the last two languages fluently aside from English, which doubles as a TheCastShowoff). In "The Dragon and the Fairy", she displays her proficiency in French.
* ProperlyParanoid: In "This Is What We Do", she gets antsy around Asakeem after he's used to draw out armed Islamists in LA. When she sees him trying to walk on the beach, she takes her sidearm out. [[BaitAndSwitch Turns out that Asakeem is trying to pray to the direction of Mecca, as a requirements for all practicing Muslims.]]
* SemperFi: she's a Marine brat.
* TomboyAndGirlyGirl: The Tomboy to Nell's GirlyGirl.
** TomboyWithAGirlyStreak: But she does enjoy [[SheCleansUpNicely getting dressed up]] every now and then.
* UnresolvedSexualTension: With Deeks. [[spoiler: Season 5 [[TheyDo resolved it]].]] In Season 6 they do [[spoiler: get together while ice-skating. As of the season 8 finale, they are engaged.]]
%%* VitriolicBestBuds: With Deeks
* WrittenInInfirmity: Kensi is sent on a assignment to Afghanistan in Season 5 due to Daniela Ruah's pregnancy.
* WrenchWench: She was an only child, so her father taught her everything he'd teach a son, including things like fixing a car and wiring a house.
* YouKilledMyFather: She goes after one of her father's colleagues in the Marines for getting him killed.

!!Nate "Doc" Getz (Peter Cambor)
* ADayInTheLimelight: One episode has him contemplating becoming an agent and teaming up with Kensi temporarily. [[{{Irony}} Everyone thinks he wouldn't make a good agent.]]
* HiddenDepths: Plays the harmonica.
* TheProfiler: Nate does by providing exposition on suspects OSP investigates.
* PutOnABus: At the start of season 2.
** CommutingOnABus: Has returned several times: mid-season 2, once in season 3 and 4, twice in season 5 and once again in season 6. And again in Season 7.
* TookALevelInBadass: In season two, Nate goes away for an episode or two, comes back, and somehow picked up the ability to shoot. Everyone wonders what happened.
** Turns out [[spoiler: He's become a deep-cover agent in an ongoing terrorist investigation, then a sleeper agent in Egypt. ''Serious'' level in badass.]]
** NonActionGuy: He used to be--his desire to carry a gun and end up in the field were mostly PlayedForLaughs. Then he took the aforementioned level of badass.
[[caption-width-right:208:"The million dollar question is do you know what you're doing?"]]

!!Dominic "Dom" Vail (Adam Jamal Craig)
* BlackAndNerdy: He had his moments. His bobble-head was the best example.
* ButtMonkey: As the new guy, Dom copped a lot of flak.
* HeroicSacrifice: During the team's mission to save him, he steps in front of gunfire and is killed saving Sam.
* KilledOffForReal: In the Season 1 episode "Found".
* NewMeat: A PoliceProcedural version of this.
%%* PutOnABus
%%* TheSmartGuy

!!Anna Kolchek

* ActionGirl: Anna helped OSP solve several cases prior to being recruited by the US Marshals.
* ButNotTooForeign: A first-generation Russian-American who moved to LA when she was young.
* GenerationXerox: Anna was in law enforcement like her father. Although unlike him (he was with the Soviet KGB), she joined the Chicago Police Department.
* OfficialCouple: As of Season 8, she's with Callen.



[[caption-width-right:221:"I was attacked by a hell hound."]]
!!Marty Deeks (Eric Christian Olsen)
* AbusiveParents: His dad tried to shoot him at least twice. Or maybe once. The show is a little unclear about it.
* AfraidOfNeedles: He faints when Hetty gives him a shot in 3x21.
** Played more seriously in 5x1, after surviving [[TheToothHurts torture via dentist drill]] and being taken to surgery, he sees a syringe and stares at it visibly terrified.
* AllTakeAndNoGive: Despite his ButtMonkey tendencies, he would probably be this wasn't it for casual hints from the team that they do care... which become increasingly less casual.
* AscendedExtra: Got promoted from recurring character to principal cast in season 2.
* BerserkButton: A dirty cop once mocked a woman Deeks had a relationship with; a fellow cop that the dirty one had framed for his activities after she'd been killed by a crimelord. Deeks pulled his gun on the man, and after surrendering it to Sam, proceeded to beat the hell out of him with his bare hands.
* BewareTheSillyOnes: Deeks uses his jokes to throw people off guard and get them to trust him. But when angered he can quickly turn deadly such as [[spoiler:attacking a cop who made fun of his recently dead partner]] and [[spoiler:torturning a blind cleric when Kensi is kidnapped.]]
* ButtMonkey: As the newest on the team, G, Sam and his partner Kensi all tend to pick on him, though he tends to either shrug it off or play it up. In one or two tense episodes, it's implied he sets himself up for teasing to lighten the mood.
* TheCharmer: Deeks is a trained undercover detective. He uses charm to get into places and get people to trust him so he can further get into the group.
* ChivalrousPervert: For variable levels of chivalry and perversion. He also uses it to diffuse tension in certain situations.
%%* CrouchingMoronHiddenBadass
* DeadpanSnarker: He often has a sarcastic joke to work in any situation.
%%* DisappearedDad
* DistressedDude: After being shot twice, kidnapped, used as bait, beat up on numerous occasions, and being involved in more explosions than this troper can count - honestly, the only person who MIGHT rival him is Callen, and that's only because [[spoiler: he's the last surviving member of a family that's been feuding with another for decades and everybody wants to kill him.]]
** Though he may count, at times, as a BadassInDistress since he does tend to get himself out of those messes.
*** Considering he saved Kensi's life by [[spoiler: shooting the baddie before he could kidnap her]] after racing down a couple flights of stairs to get to her when he worked it out in his head that [[spoiler: he was the bait to lure her out of hiding]]. And that was after he'd been shot. Twice.
*** He also has been [[spoiler: tortured by Siderov while being asked if Michelle was an agent.]]
* DramaQueen: He is always freaking out in the worst times. Normally used for comical relief.
* DudeWheresMyRespect: Up until Descent/Ascention Sam never trusted Deeks. But after [[spoiler: Deeks is tortured and protects Michelle]] Sam grows to respect the detective.
* FriendToAllChildren: Seems to have a knack for bringing kids out of their shells.
* HeroicBSOD: [[spoiler: Seems to be falling into this after being brutally tortured during the season 4 finale.]]
* HiddenDepths: Grew up playing the violin, and seems to be able to sing as well. Also, was a public defender before he became a cop. He also worked in Robbery for two years before becoming a Detective.
* {{Manchild}}: Deeks often speaks of watching cartoons and reading comics along with over-the-top whining. Though how much of this is real and how much is a front we don't know.
* MissingMom: Up until season 7 his Mom was a mystery. In Personal we learn that she [[spoiler: isn't put down as his next of kin prompting Hetty to be]] and yet in Citadel we meet her and they act like they have always been together. This has yet to be explained.
* NiceGuy: Every Christmas Eve, he volunteers at a soup kitchen.
* ObfuscatingStupidity: Deeks often pretends to be stupid or mishears things for comedic effect but really he's quite smart having both passed the bar and on cases he often can see things the others can't.
* OvershadowedByAwesome: If this show had been about the L.A.P.D., Deeks would have been TheHero. Next to G, Sam, and Kensi, however, he's TheChick.
* RealLifeRelative: Olsen is the RL brother-in-law of Daniela Ruah; she's married to his brother (who is also the stunt double for Deeks!)
%%* ShipTease: With Kensi.
* SixthRanger [[spoiler: After Dom is killed]]
* StandardCopBackstory : He shot his father when he was 11. The last time Deeks saw him, his father tried to shoot him with a shotgun on Thanksgiving.
* UndercoverCopReveal: The team first met him when he was at an MMA gym, posing as a fighter named Jason Wyler. Hetty revealed the truth halfway through.
* UnresolvedSexualTension: With Kensi. [[spoiler: Season 5 [[TheyDo resolved it]].]] In Season 6 they do [[spoiler: get together while ice-skating. As of the season 8 finale, they are engaged.]]
%%* VitriolicBestBuds: With Kensi
* YouCanLeaveYourHatOn: Paid his way through law school and the Police Academy by stripping.


[[folder:NCIS Support Personnel]]

[[caption-width-right:234:"I broke the internet."]]
!!Eric Beale (Barrett Foa)
* {{Adorkable}}: Very.
* BelligerentSexualTension: He and Nell can lapse into this when she feels he doesn't give her enough importance, or when they get competitive. It's mostly playful and benign.
* ClosetGeek: A very, very transparent closet--one that embarrasses him occasionally around Nell. Varies between this and ProudToBeAGeek.
%%* HollywoodNerd
* HollywoodHacking: Generally averted, occasionally played painfully straight.
* MissionControl: Helps the OSP team by providing details from the Ops office.
%%* TheSmartGuy
* NonActionGuy: The one time he's forced into the field, he's terrified he'll have to carry a gun. Hetty gently informs him she wouldn't forgive herself for forcing him to carry a weapon, and he's happy to return to Ops when he's done.
* PreppyName: He gives his full name as "Eric Bartholomew Beale III, Esq." in S6E2, "Inelegant Heart".
* TookALevelInBadass: While out on field training with Kensi and Deeks, the suspect they're trying to arrest fires at them. Eric manages to neutralize said suspect by throwing a flash grenade.
* UnresolvedSexualTension: With Nell. The 2012 ChristmasEpisode had them [[ShipTease kissing under mistletoe]].

[[caption-width-right:238:"Do they always expect miracles?"]]
!!Penelope "Nell" Jones (Renee Felice Smith)
%%* {{Adorkable}}
* BadassInDistress: She's been taken hostage a few times. The first used her as a human shield so she [[DisarmDisassembleDestroy unloaded his gun]]. The second manages to take her gun so she pulls a [[NeverBringAGunToAKnifeFight knife and stabs him repeatedly]].
* BelligerentSexualTension: She and Eric lapse into this when she feels he doesn't give her enough attention, or when they become slightly competitive. It is mostly playful and benign.
* BewareTheNiceOnes: Unlike Eric, she is field trained and carries a gun when in the field. She hasn't had to use it that often, but she has captured a few suspects and disarmed a trained opponent who had taken her hostage and was using her as a human shield.
%%* TheChick: Occasionally.
* CryCute: Well almost. In "Free Ride", she almost went to this since Nell wants to spend the holidays with her family. Due to the case, she can't leave until it's solved.
* GirlyBruiser: Once escaped from a gunman holding her hostage. Callen also once nicknamed her "the Nellverine" after she took down two different fleeing suspects hand-to-hand in the same day.
* HollywoodHacking: Generally averted, occasionally played painfully straight.
* {{Exposition}}: What she's commonly used for.
* TheLadette: According to a profile created for her by her sister. [[SubvertedTrope Subverted]] when it turns out that, among other things, she doesn't know anything about football.
* NumberTwo: Hetty appears to be training her as a potential successor.
%%* TheSmartGirl
* SugarAndIcePersonality: When forced to take Hetty's place, she reveals that she can become just as authoritative and efficient as her for routine work.
* TomboyAndGirlyGirl: The Girly Girl to Kensi's Tomboy.
* UnresolvedSexualTension: With Eric at times. She did kiss him at one point.

!!Henrietta "Hetty" Lange (Linda Hunt)
* AndStarring: Hunt gets the 'With'.
* TheAtoner: [[spoiler:She has blamed herself for the deaths of several agents to a point that she has tried to resign. ''Three times.'' All she does is change the date on the letter.]]
%%* BadassBureaucrat
* BadassInANiceSuit: She prides herself on her haute couture. In one episode, where [[Series/{{NCIS}} Abby Sciutto]] assists the team in taking down a serial killer, Hetty compliments Abby on her [[PerkyGoth own unique sense of style]].
* CatchPhrase: "Oh, bugger."
* TheChessmaster
-->'''Callen:''' When are you gonna stop moving us around like chess pieces!?
-->'''Hetty:''' I don't move ''pieces'', Mr. Callen. I move ''the board''.
%%* CoolOldLady
%%* CutHisHeartOutWithASpoon
%%* ExpansionPackPast: At times.
* GuileHero: She is once called ''The Duchess of Deception''
* HeroOfAnotherStory: Prior to joining NCIS, she participated in black ops missions to rescue American/Allied soldiers captured and held in Vietnam, even with the fall of Saigon in 1975.
* MamaBear: Hetty does some long distance Mama Bearing when Sam and Callen are held hostage by militia— she uses her "political capital" with the Sectretary of the Air Force to send them backup in the form of fighter jets.
* TheMentor: To the LA team when they need her help or advice.
%%* MiniatureSeniorCitizens
* MyGreatestFailure: [[spoiler: Failing to save Callen's mom. As well as the deaths of previous agents. Later on, she goes to Southeast Asia to investigate one of her old colleagues who is locked up by the current Vietnamese government, who she thought died in captivity after the Vietnam War.]]
* MysteriousPast: She could tell you, but she'd probably have to kill you.
%%* NeverMessWithGranny
* NoCelebritiesWereHarmed: Hetty, like a certain [[WesternAnimation/TheIncredibles Edna Mode]], is modeled after of costume designer Edith Head. In "Imposters" she mentions to have worked with Creator/BetteDavis on [[Literature/HerculePoirot Death on the Nile]], so Hetty might actually be Edith Head in the [=NCIS=] universe.
* NotSoAboveItAll: At the end of the street racing episode, Hetty spots Eric's Segway in the empty office. The last few seconds of the episode is her riding it, whooping.
* NotSoStoic: Snaps at Callen when he challenges her on recruiting and losing so many vulnerable agents. See his BrokenPedestal moment, above.
* NoodleIncident: Has many, often from the ExpansionPackPast being a MysteriousPast.
** She once ruled Nicaragua for 72 hours. "Don't ask."
** "Hetty, plus tequila, plus mechanical bull, equals bar fight."
* {{Omniglot}}: English and German and in "Allegiance", Welsh.
* ParentalSubstitute: To Callen. She's always had a special connection to him given their shared history.
* ParentalAbandonment: Her parents died shortly after being freed from a Nazi concentration camp and she was adopted.
* ShroudedInMyth: Many of her schemes precede her.
%%* SpotOfTea
* TeamMom: She is a mother figure to everyone under her care, and extremely protective of all of them.
* TookALevelInKindness : Though she proved kind and caring since the pilot, she reached new levels in season 2 and 3.

!!Owen Granger (Creator/MiguelFerrer)
* ComicallySerious
* GuileHero: He prefers to manipulate targets into revealing something or tricking them into leading NCIS to something unwittingly.
* HeroOfAnotherStory: Prior to joining NCIS, he participated in black ops missions to rescue American/Allied soldiers captured and held in Vietnam, even with the fall of Saigon in 1975.
* JackBauerInterrogationTechnique: When a suspect working for a PrivateMilitaryContractor demands to speak with his lawyer, Granger hands him his phone and lets him dial. As the suspect raises the phone to his ear, Granger fires his pistol right next to the suspect's ear, then tells him the next bullet is going into his head unless he talks.
%%* JerkWithAHeartOfGold
* ObstructiveBureaucrat: He has good reasons sometimes...
* ParentalSubstitute: Kensi saw Granger like a second father to her, and was even going to ask him to bring her down the aisle at her weeding. [[spoiler:It's sad that he didn't last long enough nor stick around to see it happen.]]
* RealLifeWritesThePlot: He goes rogue/off the grid after his actor passed away from throat cancer.
** LethalDiagnosis: With respect to his actor's condition, Granger was diagnosed with throat cancer and told he had only a few months left at best. This implies that his character is destined to die off-screen.
* ThePatientHasLeftTheBuilding: [[spoiler:The manner in which Owen is posthumously written out of the show, said to have suddenly flown the hospital without warning, leaving a goodbye note to Hetty indicating he will not be coming back.]]
* ReasonableAuthorityFigure: ...and has been very accommodating to the team the more he works with them.
* TeamDad: It shows in season 6, as while [[spoiler: Hetty is HauledBeforeASenateSubcommittee]], Granger is helping the team avoid the [[spoiler: Department of Justice investigators]]. Later on in the season, also, when he tries Deeks's Swedish nachos.
** Later exemplified when Kensi reveals that because she lost her dad, she wanted Grainger to walk her down the aisle in his place on the day she eventually got married... except [[{{Tearjerker}} by that point, he parted ways with the group]]. And due to his actor's sudden passing, we know he won't be coming back.
* WasItReallyWorthIt: He's had to do a lot of DirtyBusiness over the years. After [[spoiler:Fatima Khan (a woman he saved as a child) tried to kill him and Hetty for planting a car bomb that killed her father]], he's left seriously wondering if every mission they performed was worth the costs.

!!Harley Hidoko
The executive assistant to new NCIS Executive Director for Pacific Operations after Hetty resigns. Like Nell, she sometimes joins the others in field operations.

* ActionGirl: Like Nell, she helps the OSP team on raids when manpower is needed.

!!Shay Mosely
The new NCIS Executive Director for Pacific Operations. She used to be with the Secret Service.

* HeroOfAnotherStory: Her work with Secret Service prior to her NCIS recruitment.
* ReasonableAuthorityFigure: Not at first, she sometimes gets into disbelief about ludicrous requirements such as conducting false flags op to deceive suspects and getting high-end cars for sting ops.
--->'''Shay''': I should have stayed in D.C.



!!Mike Renko (Brian Avers)
%%* BackForTheDead
%%* DeadpanSnarker
%%* PermaStubble
* PutOnABus: Near the end of season one.
** TheBusCameBack: In the season three finale.

!!Lara Macy (Louise Lombard)
* ChuckCunninghamSyndrome / ThePeteBest: She only appears in the ''Series/{{NCIS}}'' 2-parter "Legend". Hetty was added to the team in her place.
** BusCrash: Killed off a year later in the parent show.

[[folder: Antagonists]]

!!Isaak Sidorov
A former Russian FSB agent turned ruthless arms dealer. He gets on the radar when he steals at least three nuclear bombs. He apparently has a long history with Quinn, whom is, unbeknownst to him, Michelle Hanna, Sams wife.
* ArmsDealer: The "Former Reds With Rockets For Sale" type. His role in the plot starts when he attacks a group of Russian sleeper agents that were hiding nuclear bombs. The reason? To sell the bombs for a profit.
* AxCrazy: Quinn points out that her clients aren't usually as happy to see her as him. His response? "They don't enjoy killing as much as I do." It's implied he killed his current girlfriend simply because she was jealous of Quinn.
* BigBad: Of Season 4, as his plans to sell a nuclear warhead consume much of the team's efforts. [[spoiler:Though it becomes a BigBadEnsemble with Marcel Janvier after the latter re-enters the field.]]
* TheChessmaster: By the time the NCIS team goes after him, he's already gotten his hands on at least three nukes.
* ColdBloodedTorture: He used it to find the nukes. In the Season 4 finale, [[spoiler:he captures Sam and Deeks and uses ElectricTorture and a dentist drill on them, respectively.]]
* TheDreaded: Just the mere mention of his name is enough to make any conversation tense. Even TheMafiya is terrified of him.
* KilledOffForReal: [[spoiler: In "Ascension", Sam shoots him up real good]].

!!Marcel Janvier (The Chameleon)
* ArchEnemy: For the team in general and Agent Callen in particular.
* AssholeVictim: Suffers various severe injuries throughout the show. No-one feels sorry for him.
* AxCrazy: Has absolutely no concern for other's life and is possibly the most psychotic villain in the show.
* BeneathSuspicion: Invokes this trope. When he's on a job, he often passes himself off as someone low on the totem pole, like a mere driver. He generally uses a frontman to make the deals for him.
* BigBad: Of the finale of Season 3 and the premier of Season 4. [[spoiler:He later elevates himself to BigBadEnsemble of the finale of Season 4 and premier of Season 5 with Isaak Sidorov]].
* BodyHorror: First, he is shot in the face by Callen. Then [[spoiler: has one of his hands cut off by Vaziri.]]
* BoxedCrook: [[spoiler: At the end of Season 4, Callen "recruits" him to lure Sidorov into revealing the location of his stolen nukes. Janvier seems to play along, but then he exposes Sam and later, slips the leash.]]
* TheChessmaster: Single-handedly manipulates NCIS multiple times into doing what he wants, including wiping out a family of arms dealers, manipulates Sam, Kensi and Deeks to [[spoiler: almost getting blown up]] all to [[FortheEvulz get his revenge and screw with Callen.]] He also likens his actions to a game of Chess.
* CovertPervert: Implied in his debut episode to have a liking to women with tattoos. Whether this is true or not is never confirmed.
* CruelMercy: [[spoiler: Is on the receiving end of this from Callen at the end of "Ascension". Callen even makes sure to be there when he's sent to jail]].
* DeathSeeker: When he appears in "Descent" he asks Callen to kill him. [[spoiler: He subsequently tries to provoke Callen into doing so. It fails]].
* FauxAffablyEvil: Will act incredibly polite towards you while describing how he will kill you. He also regularly sends [[ArchEnemy Callen]] a Christmas card, which Callen places [[spoiler: next to a picture of himself and Joelle with Sam and Michelle]].
* HeroKiller: [[spoiler: Responsible for the deaths of both Lauren Hunter and Mike Renko. He's also responsible for Sam and Deeks getting tortured by Sidorov]]
* HiredGuns: Although he sometimes appears to have a gang, the Chameleon just hires ([[YouHaveOutlivedYourUsefulness and disposes of]]) people as needed.
%%* JerkAss
* MasterOfDisguise: Played with. While he doesn't impersonate anyone himself, he can fake being a variety of nationalities. He's also very good at passing himself off as BeneathSuspicion.
* RefugeInAudacity: In his first appearance, he arranges the death of the Interpol agent tracking him. He then hires a guy to contact NCIS and impersonate the agent.
* RoaringRampageOfRevenge: Although he didn't start out this way, when he enters the show his entire reason for living is literally to get revenge on Callen for shooting him in the face. It isn't just Callen either; during "Ascension" [[spoiler: he goes after the guy who cut off his hand and pays him back twice over.]]
* TheSociopath: Marcel Janvier cares only about his own profit and has no regard for human life.
* XanatosSpeedChess: In the Season 5 premier, [[spoiler: during his escape from Callen, Marcel constantly updates his strategy to the point of cutting off parts of his own skin just to get rid of the tracking residue Callen placed on him.]]

!!Tahir Khaled
* ArchEnemy: For Sam after his time in Sudan.
* BigBad: Of Season 7, and the finale of Season 8.
* HeroKiller: [[spoiler:Masterminded the op that led to Michelle Hanna's death in Season 8.]]
* HoistByHisOwnPetard: [[spoiler:Gets killed by his own IED after Sam escapes.]]
* ItsPersonal: Sam earned his undying hatred for making Tahir's sister turn on him, leading Tahir to target Sam's family in turn, which made it personal on both ends. [[spoiler:After kidnapping and killing Michelle Hanna, the rest of the team all want him dead.]]