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BEWARE OF SPOILERS! To prevent the page from being whited out entirely, only spoilers from the final season (5) are whited out!

"The government considers these people irrelevant. We don't."

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Season 1

    Diane Hansen 
See HR.
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    Bill 

Bill

Played by: John Hilner
Appeared in: "Ghosts"

  • Your Cheating Heart: He was cheating on his wife, who subsequently sent two hitmen to kill him.
    Reese: I would call the police, and a good divorce lawyer.

    Theresa Whitaker 

Theresa Whitaker

https://static.tvtropes.org/pmwiki/pub/images/whitaker_theresa_3504.png
Played by: Valentina de Angelis
Appeared in: "Ghosts"

A teenager whose family was murdered following a land deal gone wrong. After her family was murdered, Theresa began living on the street and started making a living by using a skimmer machine on ATMs.


    Joey Durban 

Joey Durban

Played by: James Carpinello
Appeared in: "Mission Creep"

A former soldier in the 107th Infantry, and a member of a crime ring led by Sam Latimer, along with Straub and Teddy Dalloway.

Joey has a fiancée named Pia Moresco, whom he knew since they were kids. He joined Latimer's crime ring to help support the family of another soldier who was killed in Afghanistan after they swapped seats in a Humvee. Under Latimer's leadership, Joey and the rest of the crew mainly carried out high end robberies.


  • Honor Before Reason: Joey robs banks, putting his life and liberty at risk, to provide for the family of a deceased Army comrade.
  • The Bus Came Back: Returns in season 5 as a member of a DC-based team of the Machine's Assets.
    • Took a Level in Badass: He is working as the equivalent of Reese in this team, even saving Reese and Shaw from an assassin and the Secret Service.

    Megan Tillman 

Dr. Megan Tillman

https://static.tvtropes.org/pmwiki/pub/images/tillman_megan_985.png
Played by: Linda Cardellini
Appeared in: "Cura Te Ipsum"

A physician who spent her adult life stalking her sister's rapist to get revenge.


  • Crazy-Prepared: She's devoted a great deal of time to committing the perfect murder of her sister's rapist. Reese is extremely impressed in particular at the measures she's taken in preparing for her target's disposal once she's killed him.
  • Hospital Hottie: She's a doctor, and there's plenty of interest in her when she turns up to bars.
  • Naughty by Night: Subverted. She plays this up to find her sister's rapist.
  • Revenge: Her entire motivation is based around killing the man who raped her sister.
  • She Who Fights Monsters: Reese warns her about the danger of this trope and convinces her to let him punish her target instead so she doesn't have to live with blood on her hands.
  • Sympathetic Murderer: A would-be version; she's trying to kill the man who raped her sister.
  • This Cannot Be!: Reese is just a stranger she's met at a victims group, yet he somehow turns up to avert her plan, knowing everything about her. Megan breaks down at the sheer impossibility of it all.
  • Vigilante Man: She tries to be, but Reese talks her out of it — whether he takes up the role is left ambiguous.

    Samuel Gates 

Judge Samuel Gates

Played by: David Costabile
Appeared in: "Judgment"

A criminal court judge. He lost his wife Elizabeth to cancer approximately a year before he became a POI. He has been raising their young son ever since.


  • Papa Wolf: When his son was taken, he was willing to go to extremes to save him.
  • Reasonable Authority Figure: As a man of the Law, he is a tough but reasonable judge. He acknowledged Reese did a morally good action but not the legally right one, as Reese broke plenty of laws. Reese claims to Finch the Judge also implied he would assist them at some later date as a reward for getting his son back.
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    Zoe Morgan 

    Charlie Burton 

    Wallace Negel 

Wallace Negel/Ulrich Kohl

https://static.tvtropes.org/pmwiki/pub/images/kohl_ulrich_5669.jpg
"For my country, I left my country and killed wherever they sent me. For that they called me a monster."
Played by: Alan Dale
Appeared in: "Foe"

A former East German Stasi spy who was betrayed by members of his unit, and planned to eliminate his former colleagues.


  • Badass Grandpa: Despite being well into his old age, he runs rings around the young German intelligence officer sent to take him down and has the honor of being the first person seen in the show who can go head-to-head with Reese, stay one step ahead of him and even incapacitate him with a well performed nerve strike.
  • The Chessmaster: Has had a while to draw up a plan to track down and get rid of his former colleagues while in jail and executes it in a very efficient, methodical manner.
  • Cold-Blooded Torture: His preferred form is acupuncture needles to major nerves. Very clean and intensely painful.
    Kohl: They laughed at me when I learned to use these needles. They didn't laugh long.
  • Cool Guns/Rare Guns: His Weapon of Choice is a Welrod, a World War II-era bolt-action pistol with an integrated suppressor that renders it extremely quiet (by gun standards).
  • Driven to Suicide: After he's informed that his wife is alive and meets with her, she informs him she's completely terrified by him and as he's got nothing else to live for, purposely makes Reese kill him by levelling his empty gun at his wife.
  • Even Evil Has Loved Ones: The whole reason why he's back in New York, to take revenge for himself and his wife. And when his wife reveals she's utterly terrified by him, he decides to make Reese kill him as he's got nothing left to live for.
  • Evil Counterpart: To Reese.
  • Friendly Enemy: He is very friendly to John. They bond over discussing tradecraft and costs of being a professional killer while Kohl is taking breaks between torturing Reese. He's also highly regretful when he has to depart while at the same time is preparing to plug John in the head. Later after their final confrontation, they have a rather touching yet bitter-sweet conversation as Ulrich bleeds out on a park bench.
  • Heel Realization: He eventually realizes what he's become.
    Kohl: You were right to fear me.
  • Jumped at the Call: Kohl went from being a Berlin Wall sentry to spy when his country needed him.
  • Not So Different: From Reese; both are highly skilled operatives who carried out assassinations on behalf of their country, and became twisted by their actions.
  • Roaring Rampage of Revenge: Against his former comrades in the Stasi, for collectively betraying him after having Heel Realizations.
  • Suicide by Cop: Variation. He makes like he's going to shoot somebody and Reese fatally shoots him, then it turns out the gun was empty.
  • Torture Technician: Tortures Reese for information, in a manner most technical.
  • Tragic Villain: Began to scare those around him due to his fanatical and bloody kill count, so they betrayed him when they defected. He wasn't pleased and flew to New York to get even—but then he meets the wife he thought was dead, and his daughter who he never met and then after realizing what he's become when his wife tells him she's utterly terrified by him, gets Reese to shoot him, killing him.

    Joss Carter 

    Claire Ryan 

Claire Ryan

Played by: Helen Coxe
Appeared in: "Number Crunch"

An NYU lecturer and one of four persons who witnessed the car accident of a Congressman's son.


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    Matt Duggan 

Matt Duggan

Played by: Jeremy Beck
Appeared in: "Number Crunch"

A waiter and one of four persons who witnessed the car accident of a Congressman's son.

    Wendy McNally 

Wendy McNally

Played by: Bridget Regan
Appeared in: "Number Crunch"

A hair stylist who was one of the four people who witnessed the car accident of a Congressman's son.


  • Trauma Conga Line: All she and her friends wanted after taking half a million dollars in laundered money was to take a modest finders fee and return it to the owners. The owner of the money hires a pair of professional killers to hunt them down, blowing one of her friends to smithereens and nearly ambushing her and Paula in their house. Later, Paula gets kidnapped and they nearly die in a hostage exchange gone wrong. Thanks to John's efforts, they live and even get to keep the money.

    Paula Vasquez 

Paula Vasquez

Played by: Melonie Diaz
Appeared in: "Number Crunch"

The foster sister of Wendy McNally who also witnessed the car accident of a Congressman's son.


  • Trauma Conga Line: Goes through one with her friends after a congressman hires some professional killers to find his money.

    Ernie Trask 

Ernest P. "Ernie" Trask/Ernesto Machado

Played by: David Zayas
Appeared in: "Super"

"It seems like yesterday I was partying till dawn down in Miami. Used to own six nightclubs down there you know; I had a mansion in Coral Gables, a white Bengal tiger—had to give all that up. Bad for my health."

The building superintendent of an apartment complex in New York City.


  • Cassandra Truth: All his stories about once having a big fancy life when he is just the super of a low-level apartment are laughed at. He is actually in Witness Protection for testifying against Miami drug dealers.
  • Nice Guy: Cheerful, polite, affable, and generally gets along quite well with his residents.
  • Sympathetic Murderer: He was planning to kill a sleazy stalker.
  • Witness Protection: Why details about him living the high life in Miami and what happened to his ex-wife are hard to come by.

    Andrea Gutierrez 

Andrea Gutierrez

Played by: April Hernandez-Castillo
Appeared in: "Legacy"

"I believe everyone deserves a second chance."

A civil litigation attorney.


  • Action Survivor: Uses a telescoping baton to great effect and the drawers in a filing room to stall the man who's trying to shoot her before John gets there.
  • Clear Their Name: She is seeking to prove her clients are really innocent of their crimes.
  • Crusading Lawyer: Her primary goal is to help her clients.
  • Defiant to the End: Isn't begging when one of her colleagues (who's masterminded a scam which involves taking parolees' children into the foster care system for profit) is trying to kill her. She's rather angry, in fact.
  • Hello, Attorney!: Very pretty.
  • Married to the Job: Her clients are numbers 1, 2, and 3 on her priorities.
  • Wide-Eyed Idealist: Even the man who tried to executes her points it out and in her superb Shut Up, Hannibal! to his self serving justifications about why he's going to kill her, she "would rather [her heart] bleed than stop beating altogether".

    Scott Powell 

Scott Powell

Played by: Myk Watford
Appeared in: "Root Cause"

A dedicated family man and city construction project manager, who was laid off in the face of budget cuts advocated by Congressman Michael Delancey.


    Darren McGrady 

Darren McGrady

Played by: Astro
Appeared in: "Wolf and Cub"

"I figured it out. You're a Ronin ... that's a samurai who lost his master."

A boy whose older brother was murdered.


    Michael Cahill 

Michael Cahill/Daniel Tully

Played by: Michael Aronov
Appeared in: "Blue Code"

An NYPD narcotics detective working undercover with a smuggling ring led by Neil Vargas.


    Adam Saunders 

Adam Saunders

Played by: Matt Lauria
Appeared in: "Risk"

"In the end, what Adam had instead of a father was cash in a shoebox. And what'd he do? He bought himself a future."

A proprietary trader with the Wall Street investment firm Baylor Zimm.


  • Honest Corporate Executive: Is genuinely trying to do the right thing, and while he gambles of a sort on the stock market, it's all calculated risk, and when a company his uncle invested in is shorted, he does his best (with a good deal of help from Finch) to restore the stock price.

    Leila Smith 

Leila Smith

Appeared in: "Baby Blue"

A six-month-old infant girl and a safe haven baby. She was named Leila Smith by Nurse Mary Abbot of St. Raymond's Clinic when she filed for her social security number. Her father's wife killed her mother and hired a group of people to kidnap her for sale in Eastern Europe.

    Gianni Moretti Sr. 

    Jordan Hester 

Jordan Hester

Played by: Rhys Coiro
Appeared in: "Identity Crisis"

A barback and an ordinary man whose identity had been stolen by a female drug manufacturer named Tara Verlander.


  • Then Let Me Be Evil: After people started thinking he was a drug dealer, he eventually decided to go with it and steal the identity of the thief who stole his.

    Gianni Moretti Jr. 

    Tommy Clay 

Tommy Clay

Played by: Pablo Schreiber
Appeared in: "Matsya Nyaya"

"You get what you take—so I'm takin' mine."

A "hopper" for Grayling Armored Truck Services.


  • Asshole Victim: Is eventually betrayed and killed by his girlfriend, but he had it coming after he betrayed his partner.
  • Bitch in Sheep's Clothing: Seems like a pillar of society with a perfect existence. It's all a lie. He takes part in robbing his own armoured car transport, executes and betrays a large number of people without a shred of hesitation over the course of the episode and really only gives a damn about himself.
  • Chronic Backstabbing Disorder: Suffers a horrendous case of this.
  • Evil All Along : When he drops the seemingly angelic church going family act.
  • Laser-Guided Karma: Gets gunned down by his girlfriend who tries to take the loot for herself. Fitting, after he shot his driver and
  • The Resenter: Has finally had enough of transporting wealthy individuals' valuables and as the above quote shows has decided to take what he thinks is his.
  • The Sociopath: On a horrifying scale.
  • Smug Snake: Which means he doesn't see his Bitch in Sheep's Clothing partner murdering him to take the loot for herself.

    Karen Garner 

Karen Garner/Sarah Atkins/Jennings

Played by: Dagmara Dominczyk
Appeared in: "Many Happy Returns"

An abused woman on the run from her husband, Brad Jennings. Sarah was living in New York under the alias Karen Garner working as a waitress.


  • Domestic Abuse: Is a victim of this, and has been on the run from her abusive husband.

    Henry Peck 

Henry L. Peck

https://static.tvtropes.org/pmwiki/pub/images/peck_henry_8900.jpg
Played by: Jacob Pitts
Appeared in: "No Good Deed", ".exe"

"Oh, my God, they actually built it. After 9/11, the government wanted a computer system — a machine — That could watch everyone and everything, catch terrorists before they strike. They tried with Trailblazer, TIA, Stellar Wind. They, they all failed. If I'm right, then someone really built the damned thing... and it's watching us right now."

A former employee of the NSA, who, over the course of his own investigation of additions to a number of his reports, realized that the government had built the Machine.


  • Cassandra Truth: As he's thinking aloud in the police interrogation room, he realizes the truth about the existence of the machine. Fusco doesn't believe him.
  • Determinator: He once wrote a 78-page legal brief to get out of paying a ticket. This tips Finch off that he's not going to stop investigating The Machine and Northern Lights unless they interfere.
  • Explain, Explain... Oh, Crap!: After he's arrested, he comes to his Cassandra Truth conclusion as he thinks out loud:
    Peck: Someone was sneaking just as much data out as the NSA was taking in. To scan through all that, you'd need an organization ten times our size. It's more than any human— [Machine-POV of Peck looking suspiciously up at the interrogation room's security camera] Oh my God, they actually built it...
  • Faking the Dead: To keep him safe.
  • Get into Jail Free: To avoid the assassins after him, he throws a bottle at a police car so he'll wind up safe in custody.
  • He Knows Too Much: And worse, he doesn't even know what he knows.
  • Married to the Job/Workaholic: Peck has literally no life outside his job.
  • Properly Paranoid: Gets this way over the course of the episode.
  • Whole Plot Reference: He's living out Three Days of the Condor.
  • You Remind Me of X: Peck reminds Finch of himself.

    Caroline Turing 

Season 2

    Leon Tao 

    Hanna Frey 

Hanna Frey

https://static.tvtropes.org/pmwiki/pub/images/frey_hanna_8390.jpg
"Flowers for Algernon. You should read it. It's awesome."
Played By: Emily Robinson
Appeared in: "Bad Code"

Samantha Groves's friend who was murdered in 1991. She was described as a smart girl who mostly kept to herself. She looked out for her younger friend Sam, who was alone a lot because her mom worked. Hanna liked playing computer games, especially The Oregon Trail.


    Sofia Campos 

Sofia Campos

Played by: Paloma Guzmán
Appeared in: "Masquerade"

The daughter of Brazilian politician Hector Campos, a Brazilian diplomat, whose Social Security Number came up after she became a loose end in a drug deal.


  • Bilingual Backfire: She has some nasty words for Reese, assuming he can't speak Portuguese; unfortunately for her, he can.
  • Ditch the Bodyguards: Sofia is very talented at leaving her potential bodyguards in the dust.
  • Drowning My Sorrows: She parties hard and gets drunk as a way to escape the reality of her mother's death.
  • Have You Told Anyone Else?: Sofia is aware of this trope and uses it; she says she hasn't shown the video to anybody else, so the killer won't attack Reese. It's almost a Heroic Sacrifice on her part.
  • Omniglot: She's fluent in six languages.
  • Rich Bitch: At first, but over the course of the episode she shows more depth.

    Riley Cavanaugh 

Riley Cavanaugh

Played by: Jonathan Tucker
Appeared in: "Triggerman"

An enforcer for the Irish mob who worked for his boss, George Massey.


    Maxine Angelis 

Maxine Angelis

Played By: Gloria Votsis
Appeared in: "Bury the Lede"

"There's a rumor about this guy. The police just call him The Man in the Suit. No one's seen his face, no one knows his name, I'm not even sure he exists, but he's like something out of a comic book. When people are in trouble, he comes out of nowhere. He always seems to be there just in time. Whoever he is, he saves a lot of lives...and shoots a lot of kneecaps."

A journalist working for the New York Journal.


  • Break the Haughty: She published a story without fully confirming the facts because she wanted the big scoop. She ended up unintentionally getting a crucial (and innocent) FBI informant killed. Agent Donnelly revealed crucial details of their investigation just to show her how badly she screwed up. Her reputation and career were devastated, with her past stories now in doubt. She managed to pick herself up with the help of John, and located the ledger that the informant planned to give to the FBI.
  • Going for the Big Scoop: Her main drive and biggest character flaw.
  • Intrepid Reporter
  • Married to the Job
  • Nice Job Breaking It, Hero!: She launched a story claiming that a man was being suspected of being HR's boss. Turned out he was actually an FBI informant who had the ledger that could point the direction to HR's boss, but had a bullseye painted on him with that story and got him killed. Nice job breaking it, indeed.
  • Workaholic

    Graham Wyler 

Graham Wyler/Lloyd Pruitt

https://static.tvtropes.org/pmwiki/pub/images/wyler_brian_8660.jpg
Played by: David Denman
Appeared in: "The High Road"

    Madeleine Enright 

Dr. Madeleine Enright

Played by: Sharon Leal
Appeared in: "Critical"

  • Happily Married: To her wife.
  • I Have Your Wife: She's subjected to this by Alistair Wesley.
  • Straight Gay: Her marriage to another woman is just another facet of her character. Exactly nothing in the episode would change if her significant other was switched for a man.

    Daniel & Sabrina Drake 

Daniel & Sabrina Drake

Played by: Mark Pellegrino & Francie Swift
Appeared in: "Til Death"

Daniel: I'm so sorry I tried to kill you, honey.
Sabrina: Me, too.


    Fermin Ordoñez 

Fermin Ordoñez

Played by: Michael Irby
Appeared in: "C.O.D."

    Abby Monroe 

Abby Monroe

Played by: Jessica Collins
Appeared in: "Shadow Box"

The older sister of a soldier who was killed in Afghanistan. She worked for a charity until she discovered that her boss was stealing money from veterans.


  • Screw the Rules, I'm Doing What's Right!: Her and her boyfriend's rationale for using stolen explosives to blow open the floor of a bank vault to steal back money collected by a fraudulent charity.
  • Small Role, Big Impact: She's pretty much forgotten after her episode, but the repercussions of working her number (namely, Donnelly finally cornering and arresting Reese) stick around for three additional episodes, culminating in one of the most important episodes of not just the season, but the series as a whole.

    Caleb Phipps 

Caleb Phipps

Played by: Luke Kleintank
Appeared in: "2-Pi-R", "Blunt", "YHWH"

  • The Dog Was the Mastermind: Who's the new drug lord selling E in the high school?
  • Forgiveness Requires Death: That's what Caleb thought, anyway, deciding to leave the proceeds of his future compression algorithm in a trust for his alcoholic mother. Finch vehemently disagrees.
  • Small Role, Big Impact: He is the reason the Machine isn't completely destroyed by Samaritan two and a half seasons later.
  • Talking Down the Suicidal: Finch does this while alluding to the events which forced him to fake his death and lose his fiancé and Only Friend, resulting in a Happily Failed Suicide.
  • Teen Genius: He's very smart, and developed a new compression algorithm. He's not quite on Finch's level, but he's very close and Finch sees a younger version of himself in Caleb.
  • Undying Loyalty: To Finch. He hands over his billion dollar algorithm without even asking for an explanation.

    Karolína Kurková 

Karolína Kurková

Appeared in: "Prisoner's Dilemna"

    Nicholas Donnelly 

    Kara Stanton 

    Logan Pierce 

Logan Pierce

https://static.tvtropes.org/pmwiki/pub/images/pierce_logan_7704.jpg
"Later, bitches!"
Played by: Jimmi Simpson
Appeared in: "One Percent", "Synecdoche"

The founder and CEO of the social networking website friendczar.com that he started with his best friend Justin Ogilvy. He is a self-made billionaire.


  • Shadow Counterpart: To Finch. This becomes even more true in his season 5 appearance, as he takes on Finch's role for a DC based Team Machine.
  • Sherlock Scan: Deduces a lot about Team Machine from one good look at Finch and Reese together.
  • Wild Card: Even Reese has trouble guessing what he will do next.

    Mira Dobrica 

Mira Dobrica/Brozi

Played by: Mia Maestro
Appeared in: "Booked Solid"

"Hotel management is hard work, but it's not rocket science."

    Sameen Shaw 

    Michael Cole 

Michael Cole

https://static.tvtropes.org/pmwiki/pub/images/cole_michael_5289.jpg
"Do you ever wonder where Research gets the numbers?"
Played by: Ebon Moss-Bachrach
Appeared in: "Relevance", ".exe"

An ISA agent and part of a two man team along with Sameen Shaw who neutralized terrorists.


    Alex Declan 

    Lou Mitchell 

Louis "Lou" Mitchell

https://static.tvtropes.org/pmwiki/pub/images/mitchell_lou_6149.jpg
"Hey, dumbass—I cheated!"
Played by: Ron McLarty
Appeared in: "All In"

A former card sharp turned watch repairman, who was forced to help launder drug money for Dario Makris.


  • Badass Grandpa: He has no qualms about waging a one-man war against a dangerous casino owner.
  • Card Sharp: A professional; few can play the cards like Lou can.
  • Cool Old Guy: He's a grump in his elder years, but his mind is sharp and he's a tough old goat.
  • Grumpy Old Man: Finch accurately describes him as 'cantankerous'. Lou is hard to get along with.
  • The Lost Lenore: He stills mourns his wife to the point where he can't leave the city where she's buried.
  • Pay Evil unto Evil: His plan to get back at Dario Makris.
  • Suspicious Spending: He's a retired watch repairman, but somehow is able to lose $2,000 a day at a casino for over a year; Reese and Finch follow the suspect money to the casino owner, Dario Makris as part of a money-laundering scheme.
  • What the Hell, Hero?: He gives one to Finch for leaving the love of his life; Lou didn't leave the woman he loved, she died.

    Monica Jacobs 

Monica Jacobs

Played by: Tracie Thoms
Appeared in: "Trojan Horse"

"Please, we breached firewalls together; call me Monica."

    Cal Beecher 

    Richard Nelson 

Dr. Richard Nelson

Played by: Dennis Boutsikaris
Appeared in: "In Extremis"

  • The Atoner: He starts to believe that his poisoning is karmic payback for his mistakes in life, but gradually accepts that despite some of his personal flaws, he didn't deserve to be poisoned.
  • Badass Bookworm: When a relatively meek man turns into a Dead Man Walking, all pretenses are dropped as he literally has nothing left to lose anymore. The man will get his justice and revenge if it's the last thing he'll do - which it literally is.
  • Cruel and Unusual Death: ARS is no joke, and is a very nasty way to go. Dr. Nelson handles it like one hell of a champ though.
  • Deadly Nosebleed: One of the symptoms of his illness.
  • Dead Man Walking: There is no cure, or even treatment, for ARS (acute radiation syndrome). The only thing he can do is ease his pain a little bit, and get his body moving with some adrenaline. It also helps to have a single-minded focus.
  • Dramatic Drop: He drops a glass when the poison takes full effect and he finally dies.
  • Face Death with Dignity: Nelson wants to do this, and eventually succeeds.
  • Freudian Threat: Toward a hedge fund trader; he shoots at his legs while noting that his vision is getting blurred due to the poison.
  • My Greatest Failure: For Team Machine, as he becomes the first (on-screen) victim-POI they failed to save, despite getting his killer.
  • To the Pain: He spells out what happens when someone suffers polonium poisoning to the killer. Who's just taken it himself.
  • Shot to the Heart: Reese has to pump Nelson with an adrenaline shot to keep him going at one point.
  • Whodunit To Me: With Reese's help, delivers a little Laser-Guided Karma to the man who killed him.

    Ernest Thornhill 

Season 3

    Jack Salazar 

Jack Salazar

https://static.tvtropes.org/pmwiki/pub/images/salazar_jack_9279.png
"I can't be something I'm not."
Played by: Ray Valentin
Appeared in: "Liberty"

A non-commissioned officer with the US Navy who became a Person of Interest after his friend RJ stole some uncut diamonds that were part of a larger shipment being transported aboard his ship without his knowledge.


  • Awesomeness by Analysis: Gives a chilling play by play of the bar brawl that's about to happen when he gets into a fight along with his friend.
  • Badass in Distress: Some Force Recon Marines attempt to kidnap him, beating him up, knocking him out and tossing him in the boot of a car. Luckily, John's driving.
  • Dare to Be Badass: His commanding officer believes he'd make a great SEAL if he tried out for his BUD/S.
  • Expy: He's basically a younger Reese in a different service branch, who hasn't made career decisions like joining the CIA or suffered personal tragedy in his life. Even Reese sees the similarities between him and Jack, giving him some friendly advice and also warning him not to accept any job offers from the CIA if he decides to become a SEAL.
  • I Just Want to Be Normal: Is torn between the offer to try out for his BUD/S and become a SEAL or settle down and have a family.
  • Nerves of Steel: One of the more calm POI's Team Machine has dealt with who doesn't lose his nerve or do something idiotic when his shipmate is kidnapped.
  • Trading Bars for Stripes: How he got into the Navy, he beat a man into a coma. John emphasises with him over this, alluding to his own experiences.
  • Trauma Conga Line: All he wanted was a drink and some rest and relaxation in New York during Fleet Week. But his number came up in the Irrelevant list. Then he gets involved in a bar brawl, has his friend kidnapped and wired to an I.E.D, is nearly kidnapped himself, is shot when Reese rescues him, is embroiled in a diamond smuggling operation he wasn't even aware of and is nearly late returning to the aircraft carrier he's serving on. Luckily, his irresponsible shipmate who helped embroil him in the mess takes the blame for their lateness and by the next day, he's safely back on the aircraft carrier with the Force Recon Marines who were trying to kill him dead or in hospital.

    Wayne Kruger 

Wayne L. Kruger

https://static.tvtropes.org/pmwiki/pub/images/kruger_wayne_1192.png
"You can't fight the technology."
Played by: David Alan Basche
Appeared in: "Nothing To Hide"

An internet entrepreneur and data broker. He founded and served as CEO of Lifetrace, Inc, a business collecting and disseminating for profit the private habits and details of internet users, sometimes with dire consequences for the individual.


  • Asshole Victim: Big time, he's ruined many people lives and never made any effort to correct the problems with his website.
  • Break the Haughty: At the start of the episode, Kruger arrogantly claimed that people who wanted privacy probably had something to hide when they complained about his site. Peter Collier and a group of people who had their lives ruined by Life Trace proceed to take him down several notches.
  • Bitch in Sheep's Clothing: Presents a slick and charismatic personality but it's a lie. He's got a criminal record, gone bankrupt in a previous business, only cares about his financial success, has been having an affair and is willing to injure the man who's trying to keep him alive just for a chance at finalising the business deal he's been conducting. Collier is utterly disgusted by him that he convinced his superiors who wanted Kruger to be scared away from his company to instead accept his proposal to execute Kruger.
  • Corrupt Corporate Executive: Even Finch sees it and notes that he built The Machine as a Black Box so that men like Kruger couldn't abuse it the same way Kruger's website is abused.
  • Death Equals Redemption: Averted. Began to show authentic remorse when he learned that his site ended up killing someone. But he gets killed before he can make any possible attempt at redemption.
  • Evil Counterpart: To Nathan and Finch in that he also created a system that violates privacy. Unlike the two of them, who built it as a black box that could not be accessed directly and sold it for a single dollar, he was only interested in making a profit and failed to care at all for the privacy of those he monitored.
  • Hate Sink: Can you tell by his other entries that he is quite despicable in almost every way you can think of?
  • Hypocrite: Calls out Finch twice for reading his personal info.
  • It's All About Me: Only cares about himself and getting the business deal with his website finalised. Made more apparent when he smashes a vase on Harold's head and heads to a business meeting where he believes the deal can be finished. It's a trap for Collier to kill him.
  • Jerkass: Taken up to eleven when he smashes a vase on poor Harold's head.
  • Large Ham: Given that the actor is theatrically trained, when Kruger starts losing it, he really starts losing it. It actually makes a couple of his scenes somewhat amusing in spite of his Hate Sink status.
  • Laser-Guided Karma: Peter Collier arranges for him to suffer a severe loss of privacy and ruin his life in the same way Kruger's site did to so many others.
  • My God, What Have I Done?: After the father of a girl who's stalker/murderer used Life Trace spells out how Kruger's inaction when he requested sensitive information be removed was ignored contributed to her death, Kruger shows genuine remorse for the first time in the episode. Collier is not impressed however and shoots him.
  • Never My Fault: His main flaw, he never accepts responsibility for how his website helped destroy so many lives. One of the people who lost his child to a stalker who was using Life Trace to track her pointed out that he did nothing and didn't listen to the requests to pull critical information from the site.
  • The Sociopath: Only just barely subverts this, since he actually does show remorse after learning about his role in the death of a man's daughter. But most other sociopathic traits are still present in his demeanor, including self-centeredness, focus on profiting from his site, and refusing to acknowledge mistakes.
  • Trauma Conga Line: For the first time, in the history of the show, its actually quite deserved. He's revealed to be having an affair at his wedding anniversary, his secretary learns he only hired her for her looks, the potential business partner leaves him out to dry, the board of his company learns about his shady criminal and business history, he gets thrown out of his company, he's nearly killed in a falling elevator,then a car accident and finally, he goes to what he thinks is a business meeting but is in fact a trap to kill him.
  • Your Cheating Heart: He's been having an affair and Peter Collier makes sure his anniversary party knows.

    Ian Murphy 

Ian Murphy

Played by: Warren Kole
Appeared in: "Lady Killer"

An investor and playboy who becomes a person of interest.


  • Master of Disguise: Switches from blue blood to Hipster faster than you can say "ironic facial hair."
  • Sherlock Scan: Sees Carter push away a small bowl of almonds and correctly deduces that she has a severe nut allergy. He also notices the way she observes other people in the club and deduces that she is/was a detective. Carter even admits that he would make a good detective.
  • Stalking Is Love: Completely believes this. He says it's to 'know' a woman.

    Rachel Jensen 

Dr. Rachel Jensen

Played by: Jennifer Ikeda
Appeared in: "Reasonable Doubt"

A veterinarian who became a person of interest when a group of armed men attempted to steal ketamine from her office.

    Vanessa Watkins 

Vanessa Watkins

Played by: Kathleen Rose Perkins
Appeared in: "Reasonable Doubt"

A defense attorney who is married to Jeremy Watkins. Vanessa was previously a prosecutor with the District Attorney's office but did not enjoy the work so switched to working for the defense.


    Genrika Zhirova 

Genrika Zhirova

https://static.tvtropes.org/pmwiki/pub/images/zhirova_genrika_5463.png
"I'm just practicing for my career....International espionage."
Played by: Danielle Kotch
Appeared in: "Razgovor"

A 10-year-old Russian immigrant with a great interest in surveillance, clever strategy planning, and a keen sense of paranoia which helps her stay sharp when she's being tracked.


    Timothy Sloan 

Timothy Sloan

https://static.tvtropes.org/pmwiki/pub/images/sloan_timothy_4634.png
Played by: Kirk Acevedo
Appeared in: "Mors Praematura"

A mild-mannered estate investigator, and the foster brother of Jason Greenfield. He became a person of interest after Peter Collier and his organization, Vigilance, were after him for information on Jason's whereabouts.


    Jason Greenfield 

Jason Greenfield

Played by: Michael Esper
Appeared in: "Mors Praematura", "A House Divided"

"I said we should scare the bastard, but Collier convinced the group that it was time for more... aggressive action. I'm not a killer."

The foster brother of Timothy Sloan, and a computer hacker marked for death by Vigilance. Notable for being the first Number assigned to Root by The Machine ("There's a third category.") to appear on the show.


  • Everyone Has Standards: He suggested that Vigilance target Wayne Kruger, but only wanted to scare him. When Peter Collier decided to kill him instead, he decided to walk. This is likely part of why The Machine wanted Root to recruit him for her team.
  • He Knows Too Much: The reason he's targeted for assassination.
  • Not Quite Dead: Jason was believed dead due to a drug overdose, but his death was actually faked to keep him safe from Vigilance.
  • Put on a Bus: Sent away to safety by The Machine after being rescued. He later returns to help prep the "blind spot" Samaritan servers so that they will not automatically be found when it comes online. He then gets sent away to safety again.
  • Resignations Not Accepted: He tried to leave Vigilance; they didn't take kindly to that.

    Hayden Price 

Hayden Price

Played by: Aaron Staton
Appeared in: "The Perfect Mark"

A con artist posing as hypnotherapist.


  • Always a Bigger Fish: Non-lethal version. He gets conned himself by someone playing a very long con.
  • Con Man: He uses his hypnosis therapy to try and wrangle people's private information out of them, although he has his fingers in a few other scam pies.
  • Out-Gambitted: His girlfriend is the better conman in the end, making off with $4.4 mil.

    John Reese 

    Patrick Simmons 
See HR.

    Arthur Claypool 

Arthur Claypool

Played by: Saul Rubinek
Appeared in: "Lethe", "Aletheia"

"Harold, I did it. I solved it before they shut me down. Harold, Samaritan is alive."

A former software engineer for the NSA, and an old friend of Harold Finch and Nathan Ingram back from when the trio attended MIT together. He also suffers from memory loss due to a brain tumor.


  • Crazy-Prepared: Apparently, he hid the drives of Project Samaritan after the government shut it down.
  • From Bad to Worse: He goes from having such bad memory loss that he forgets his own wife, to being attacked by privacy terrorists, to being held at gunpoint by the woman acting as his wife.
  • Obfuscating Stupidity: Not all of his memory lapses are genuine. At one point, he "played the tumor card" to stall for time when he and Harold are being held at gunpoint.
  • Properly Paranoid: There's a good reason that he doesn't trust his wife...
  • Unknown Rival: To Finch; he was also trying to create an Artificial Intelligence defense system after 9/11. Not only that, he succeeded. He'd just finished raising Samaritan to self-awareness when the success of Finch's Machine caused his program to be shut down.
  • Walking Spoiler: Being the creator of Samaritan, it's hard to talk about him without giving a lot away.

    Owen Matthews 

Owen T. Matthews

Played by: Samm Levine
Appeared in: "4C"

A programmer and the creator of the Black Market Bazaar.


    Kelli Lin 

Kelli Lin/Lin Jiao

https://static.tvtropes.org/pmwiki/pub/images/lin_kelli_8954.png
Played by: Elaine Tan
Appeared in: "Provenance"

An antiquities thief and former Olympic gymnast.


    Sandra Nicholson 

Sandra Nicholson

Played by: Melissa Sagemiller
Appeared in: "Last Call"

An NYPD 911 operator.


  • My Greatest Failure: She considers herself to be responsible for the death of a child she was babysitting when she was 14.

    Haley McNabb 

Haley McNabb

Played by: Dillan Arrick
Appeared in: "RAM"

One of the first persons of interest whose number the Machine sent to Finch.


    Daniel Casey 

Daniel Casey

Played by: Joseph Mazzello
Appeared in: "RAM", "A House Divided"

"Managed to get a few bits of code onto the laptop before the system woke up and bit me. It adapted to my hack. Locked me out. ... It's so advanced it's almost alien."

A freelance hacker who specializes in testing the security of computer systems. He worked for many years as a part of various tiger teams.


  • The Cracker: He's a professional computer hacker, and the fact that he was able to find Ingram's backdoor in The Machine (and was unwilling to tell the government about it) gets him marked for recruitment by Root.
  • He Knows Too Much: Casey is aware of the Machine's existence, and for that he's chosen for assassination.
  • Properly Paranoid: He's very suspicious of most people, and he's right to be. Most everyone wants him dead.
  • Put on a Bus: The Machine and Root track him down three years after his ordeal and send him to stay with Jason Greenfield. He later returns with Greenfield to help prep the "blind spot" Samaritan servers so that they will not automatically be found when it comes online. He then gets sent away to safety again.

    Billy Parsons 

Billy Parsons

Played by: Colin Donnell
Appeared in: "/"

    Cyrus Wells 

Cyrus Wells

Played by: Yul Vasquez
Appeared in: "/"

"Took me a long time to see it, but there's an order to things, a plan. And everything that happens is part of it, including you."

A janitor who was formerly a millionaire banker and businessman.


    Maria Martinez 

Maria Martinez

Played By: Nazneen Contractor
Appeared in: "Allegiance"

An engineering contractor working for HydralCorp, an international energy company.

    Leona Wainwright 

Leona Wainwright

Played by: Sandy Rosenberg
Appeared in: "Most Likely To..."

A clerical assistant to the Office of Personnel Management responsible for security clearances. Due to the nature of her job she would have access to names and contact details of every government official, from accountants to senators, who could access the confidential information in her department, including those who are associated with the Northern Lights program. Vigilance found out and targeted her.


  • Small Role, Big Impact: Her "rather theatrical death" at the hands of Vigilance, after less than two minutes of screen time, is the catalyst for the chain of events that eventually leads to Samaritan replacing The Machine as the intelligence provider for Northern Lights.

    Matthew Reed 

Matthew Reed

https://static.tvtropes.org/pmwiki/pub/images/reed_matthew_3273.jpg
"I can always tell when somebody's not telling the truth."
Played by: Nestor Carbonell
Appeared in: "Most Likely To ..."

"For two decades, I believed I pushed Claire over the edge, that she OD'd because of me, until I got this reunion invitation and I started thinking like a prosecutor instead of a boyfriend. You want justice? I served a guilty sentence the last 20 years. Shooting you and letting you rot for the next 20, I mean, that sounds like justice to me."

A prosecutor, former student of East Springs High School, and POI.


  • Amazon Chaser: Reed is very attracted to Shaw.
  • Clear My Name: He seeks to do this by murdering the person actually responsible and leaving a forged suicide note. (See quote above.)
  • Convicted by Public Opinion: He was never actually found guilty of murdering his prom date, but all his classmates suspect him and basically consider him guilty since the real culprit wasn't caught.
  • Hello, Attorney!: Shaw most definitely has this reaction upon meeting him.
  • Reunion Revenge: With a side of Prophecy Twist: Reese and Shaw think he is going to be on the receiving end when the truth is the opposite.
  • Sympathetic Murderer: Or sympathetic attempted murderer, at least. He was going to kill someone, but he ultimately doesn't go through with it.

    Roger McCourt 

Roger McCourt

Played by: John Heard
Appeared in: "Death Benefit"

Illinois' US Congressman and a member of the United States House Committee on Rules. A Relevant number that Team Machine finds themselves forced to protect. Or so they initially think.

  • Bitch in Sheep's Clothing: Its left ambiguous if McCourt really cares about his constituents, but McCourt definitely helps out the homeless and keeps open communication with the people of Illinois, all while committing insider trading and cheating on his wife. Oh, and he's helping kickstart a surveillance state.
  • Ignored Epiphany: He almost has a moment of doubt on his face after ensuring that legislation on Samaritan passes committee, but he ultimately brushes it off.
  • Manipulative Bastard: He's a social wizard, able to navigate almost any situation to his benefit. In one of his first scenes, he manages to get an angry union leader to agree with how he screwed them over and then pass off tickets to an opera he despised onto said leader.
  • My Country, Right or Wrong: Subverted. He's fully aware that the government has major flaws. Its how he justifies being paid off to put government feeds in corporate hands.
  • Small Role, Big Impact: A single episode PoI. His survival ensures that Samaritan comes online.

    Grace Hendricks 

    Control 

    Ross Garrison 

    Kyle Holcombe 

Kyle Holcombe

Appeared in: "A House Divided"

The head of the NSA.


    Manuel Rivera 

Manuel E. Rivera

Played by: Joseph Melendez
Appeared in: "A House Divided", "Deus Ex Machina"

The Intelligence Advisor to the President and one of the people Control meets with to discuss Vigilance's impending terrorist attack.


  • Adult Fear: Control plays on this trope to convince him to bring Samaritan in to replace The Machine, telling him about a dirty bomb terrorist attack that Shaw foiled in the town where his children go to school.
  • Sacrificial Lamb: His death establishes the danger Finch and the others are in while being held in Vigilance's Kangaroo Court.

    John Greer 

Season 4

    Ali Hasan 

Ali Hasan

https://static.tvtropes.org/pmwiki/pub/images/hassan_ali_4468.jpg
"You couldn't protect me, so I protected myself."
Played by: Navid Negahban
Appeared in: "Panopticon"

The owner of an electronics shop located in The Bronx, run by himself with the help of his son Ben.


  • Beware the Nice Ones: When Link pushes him, the seemingly mild-mannered Ali tries to blow him up.
  • Papa Wolf: After Link makes a subtle threat to his son, Ali tries to trick him into blowing himself up with a disguised IED. He's only unsuccessful thanks to Reese's intervention.
  • Retired Badass: Was formerly a member of the Egyptian Army's Unit 777.
  • Techno Wizard: Even Finch is quite impressed by his tech abilities.

    Claire Mahoney 

    Andre Cooper 

Andre Cooper

Played by: Ryan O'Nan
Appeared in: "Wingman"

Think about meeting women like you're selling yourself....They need to feel like you've made an effort, that you didn't just roll out of bed and throw on yesterday's suit with a new shirt.

A "professional social liaison" (pickup artist) whose Dark and Troubled Past is catching up with him.


  • Deadpan Snarker
  • Not So Different: From Fusco.
    Andre: You know how hard it is to turn your back on your friends because it's the right thing to do?
    Fusco: Yeah. I know a little bit about that.

    Malcolm & Tracie Booker 

Malcolm & Tracie Booker

Played by: Amir Mitchell-Townes & Kaci Walfall
Appeared in: "Brotherhood"

    Simon Lee 

Simon Lee

Played by: Jason Ritter
Appeared in: "Prophets"

"Look at this. Wait, this is the wrong file. Someone got to my data. This is—Wait, this is impossible. There is a conspiracy. The election was rigged, Perez was murdered, and then they tried to kill me."

  • Break the Cutie: The poor guy was having such a good career run, then Samaritan decided it had something to say about the election and Finch was forced to destroy his self-confidence to keep him from probing further and attracting Samaritan's ire.
  • Butt-Monkey: He's targeted for assassination, his career is ruined, and he's forced to question his own sanity, all because...
  • He Knows Too Much: he figured out that the New York gubernatorial election was rigged.
  • Properly Paranoid: Though he doesn't fully understand what's going on, he's smart enough to realize he's in trouble and needs to get "off the grid."

    Walter Dang 

Walter Dang

Played by: Erik Jensen
Appeared in: "Pretenders"
Aliases: Detective Jack Forge

"Hey, listen, that vigilante I heard about, the Man in the Suit? ... He disappeared a few months ago, and crime went up; violence, killings... The city needed somebody to keep up the fight, so I figured, why not me? But you know, 'me' kind of sucks, so I invented Detective Forge..."

  • Adorkable: He geeks out when he realizes that Reese is 'The Man in the Suit'.
  • Ascended Fanboy: Walter knew of Reese as 'The Man in the Suit' through his police scanner, and is overjoyed to be actually working with him.
  • "Awesome McCool" Name: He's given his alter ego the name 'Jack Forge'.
  • Heroic Wannabe: Despite being an office worker, Walter wants to be a hero and help people. He masquerades as an invented detective named 'Jack Forge'.
  • Meaningful Name:
    • "Walter", as in "Walter Mitty".
    • "Jack Forge" as in "forgery".
  • Nice Guy: Walter is generally a friendly guy.
  • Third-Person Person: As Jack Forge, he refers to himself by name.

    Tomas Koroa 

Tomas Koroa

Played by: Adrian Bellani
Appeared in: "Honor Among Thieves"

"I'm not a saint, but some things are too far, even for a man like me."

    Dani Silva 

    Carl Elias 

    Rachel Farrow 

Rachel Farrow

Played by: Alexie Gilmore
Appeared in: "The Cold War"

A woman in an abusive marriage who plans to kill her husband.

    Harvey 

Harvey

Played by: Andy English
Appeared in: "If-Then-Else"

    Yasin Said 

Yasin Said

Played by: Ryan Shams
Appeared in: "Control-Alt-Delete"

    Albert Weiss 

Albert Weiss

Played by: Mason Petit
Appeared in: "M.I.A."

    Emma Blake 

Emma Blake

Played by: Blair Brown
Appeared in: "Guilty"

A prematurely retired schoolteacher who was chosen for jury duty just like Finch.


  • Extreme Doormat: Her main flaw; she caves easily under pressure. It's why she lost her teaching job, and part of why the fixer chose her to swing the jury.
  • Genki Girl: Or at least as genki as a woman of her age could conceivably be.

    Anna Mueller 

Anna Mueller

Played by: Bella Dayne
Appeared in: "Q&A"

    Harper Rose 

    Shane Edwards 

Dr. Shane Edwards

Played by: Patrick Kennedy
Appeared in: "Karma"

A psychologist who brings his patients peace by secretly framing the enemies in their life for crimes they did not commit. This vigilantism began following the murder of his wife Lucy.


    Beth Bridges 

Elizabeth "Beth" Bridges

Played by: Jessica Hecht
Appeared in: "Pretenders", "Skip"

A businesswoman residing in Tokyo, Japan.


    Frankie Wells 

Francesca "Frankie" Wells

Played by: Katheryn Winnick
Appeared in: "Skip"

A bounty hunter from Florida who becomes one of Reese's Numbers.


  • Action Girl: She is so good in hand to hand combat that she can go up against Mooks with guns and win.
  • Bounty Hunter: Frankie is a very good bounty hunter, but this time, it's personal.
  • It's Personal: The man she is chasing killed Frankie's brother.
  • Percussive Pickpocket: Frankie is such a good pickpocket that she can lift Reese's badge while in the middle of a fistfight with him.

    Sulaiman Khan 

Sulaiman Khan

Played by: Aasif Mandvi
Appeared in: "Search and Destroy"

The CEO of Castellum, Inc., and the creator of an extremely powerful antivirus system.


  • Determinator: You have to hand it to Khan; he just doesn't stop.
  • Expy: His software is one for McAfee Antivirus; it's software that's pre-installed on nearly every computer but has a not-so-great reputation. Khan himself could be one for the founder, although he's a little less eccentric.
  • He Knows Too Much: Samaritan targets and ultimately kills him for this reason.
  • Humiliation Conga: His existence is systematically dismantled by Samaritan; his life is destroyed, his reputation ruined, everyone abandons him, and he's ultimately killed.
  • Insufferable Genius: He's a remarkably intelligent man, but also arrogant: few people in his own company actually like him or even feel sympathy for him. It isn't hard to understand why people are willing to oust him from his company, since he doesn't seem like the kind of person that's easy to work with.
  • Properly Paranoid: Khan thinks an artificial intelligence is targeting him, and he's absolutely right.
  • You Have to Believe Me!: He spends most of his episode desperately begging people to believe that he's being set up. Save for Team Machine, none of them do.

    Chase Patterson 

Chase Patterson

Played by: Zachary Booth
Appeared in: "Terra Incognita"

    Dominic Besson 

    The Machine 

Season 5

    Jeffrey Blackwell 

    Laurie Grainger 

Laurie Grainger

Played by: Paige Patterson
Appeared in: "SNAFU"

    Gerald Mancini 

Gerald Mancini

Played by: Anthony Grasso
Appeared in: "SNAFU"

    Alex Duncan 

Alex Duncan

Played by: Stephen Plunkett
Appeared in: "Truth Be Told"

    Ethan Garvin 

Ethan Garvin

Played by: Will Connolly
Appeared in: "ShotSeeker"

    Phoebe Turner 

Phoebe Turner

Played by: Sarah Wilson
Appeared in: "A More Perfect Union"

    Vasily Mikhaev 

Vasily Mikhaev

Played by: Kushtrim Hoxha
Appeared in: "QSO"

    Max Greene 

Max Greene

Played by: Scott Adsit
Appeared in: "QSO"

    James Ko 

James Ko

Played by: James Chen
Appeared in: "Reassortment"

  • Blood from the Mouth: When he dies from being accidentally injected with live flu instead of a flu vaccine.
  • Decoy Protagonist: So much so that his actor is only listed in the post-episode credits.

    Terry Easton 

    Harold Finch 

    President of the United States 

The President of the United States

Played by: Joel Haberli
Appeared in: "Synecdoche"

    Philip Hayes 
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