Senior Officers
Deputy Commissioner Podolski
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Chief Davis Garmin
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Deputy Chief Gerber
Deputy Chief Madeline Wuntch
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Captains
Captain Ray Holt
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Captain McGintley
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Captain Seth Dozerman
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Captain Pembroke aka The Vulture
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Detective Pembroke works for the Major Crimes division of the NYPD. There is tension between him and the detectives of the Nine-Nine, as Pembroke seems to repeatedly steal cases from them, often when they are already close to being solved. For this reason, he is nicknamed The Vulture by the Nine-Nine.
During Season 3, he is appointed Captain of the precinct after Holt's replacement Seth Dozerman dies but later gets removed from the position after Jake Peralta bribes Chief Garmin into reinstating Holt.
'Captain Jason "C.J." Stentley
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The 99th Precinct - 4th Floor Bullpen Employees
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Sergeant Terry Jeffords
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Detective Jake Peralta
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Detective Amy Santiago
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Detective Rosa Diaz
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Detective Charles Boyle
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Detective Michael Hitchcock
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Detective Norm Scully
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Gina Linetti
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Gina Linetti is the office administrative assistant and personal assistant to Captain Holt at the Nine-Nine. She is a civilian, not an officer of the NYPD. Gina is generally apathetic towards her job and is often seen on her phone during the work day.
Detective Daniels
Detective Daniels at morning briefing
In the pilot episode, Detective Daniels is described as being just as incompetent as Hitchcock and Scully. However, she is praised (alongside Hitchcock and Scully) for her ability to make coffee.
She can be seen at the detectives' morning briefing and when Terry begins introducing his squad to Holt.
Detective Sidney Brown
Sidney Brown & Casey Cook's nameplates
The desk opposite Boyle has a name plate with Det. Sidney Brown written on it [1].
Detective Casey Cook
A desk near Rosa has a name plate with Det. Casey Cook written on it [1].
Weekend Crew
Detective Lohank
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Kerns with Boyle's desk gift in The Apartment
Detective Kearns
Kearns is Boyle's weekend deskmate. They have a good rapport and are known to leave each other presents at their shared desk.
Other Officers
Dr. Rossi
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Dr. Rossi is a medical examiner at the Nine-Nine. She and Jake have a brief relationship during M.E. Time.
Officer Deetmore
Officer Deetmore
Deetmore is a patrol officer at the Nine-Nine. In Fancy Brudgom, Rosa mentions that he assisted her at a recent crime scene. However, when reviewing the evidence that he bagged, Rosa discovers that he mislabeled the weapons recovered and almost filed the items with the wrong case. She attends the patrol officer's morning briefing and embarrasses Deetmore by giving him a "junior police officer kit" in front of his colleagues. Deetmore files an official complaint against Rosa and Holt orders her to apologize. Rosa eventually apologizes and offers to show him the proper way to file evidence.
Deetmore's badge number is 7529. He is portrayed by actor, Kevin Bigley.
Desk Sergeant Hank during The Jimmy Jab Games
Desk Sergeant Hank
While competing in The Jimmy Jab Games, Rosa tries to have a conversation with Hank without being recognized. Unfortunately, she finds his use of the word "sweetheart" offensive and her true identity is quickly revealed.
Butt-Face Dave
David is a cop that works on a floor below the detectives at the 99th precinct. In the episode Beach House, it is mentioned that Dave has recently shaved off his facial hair, revealing a clean-shaven face that resembled a butt.
Captain Holt remarks that Dave is good at his job.
Officer Lou notices Bludsoe is missing
Officer Lou
During The Chopper, Lou is one of the officers in charge of guarding Reggie Bludsoe while he is being treated at the hospital. When Jake calls Lou to confirm that Bludsoe is still in custody, Lou informs him that Bludsoe is missing from his hospital bed.
Other Precincts
Sergeant Teddy Wells
Teddy in tactical gear.
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Teddy is a member of the fictional 82nd Precinct of the NYPD. He previously met Amy during a voluntary code training seminar, and reconnects with the detective during Tactical Village. Amy and Teddy develop a relationship but it eventually fizzles.
Teddy appears to be a competent detective. He and his precinct complete the tactical training course in record time, though that record is immediately broken again by the Nine-Nine.
As of "The Audit", Teddy has been promoted to the rank of Sergeant.
Detective Dave Majors
Majors working a case with Jake and Amy
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Detective Dave Majors is a member of the fictional 93rd Precinct. He is believed by Jake to be the best detective in the NYPD. Both Jake and Amy look up to him and jump at the chance to join him on a case.
Detective Stevie Schillings
Detective Stevie Schillings is the former partner of then-patrol officer Jake Peralta. After making detective, he was assigned to Staten Island and later transferred to the 98th Precinct in Brooklyn. Jake was forced to arrest Stevie for planting evidence.
Other Staff
Ronald
Ronald is the night janitor at the 99th precinct. In 48 Hours it is mentioned that he steals hand sanitizer from employees desks to drink while on the job.
Marge Bronigan
Marge is a janitor at the 99th Precinct that is very scary and most of the 99th precinct are afraid of her. She refuses to clean up big messes but won't let the others do it themselves. She is shown to be upset that they call her "Mean Marge" but forgives them when they name the break room after her.
Corey Park
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Corey Park, or Savant as he prefers to be called, is the IT Director of the 99th precinct. He was hired after he hacked the precinct. They turned their greatest weakness into their greatest strength, as Gina puts it.
Al
Al is a janitor at the 99th precinct. He is only mentioned in Halloween III. It is revealed later in the episode that Al was Amy.