List of Chicago P.D. characters

This is a list of fictional characters in the television series Chicago P.D.. The article deals with the series' main, recurring, and minor characters.

Main

Hank Voight

Main article: Hank Voight

Antonio Dawson

Main article: Antonio Dawson

Erin Lindsay

Main article: Erin Lindsay

Jay Halstead

Jay Halstead
First appearance	CF: "A Problem House" (episode 2.01) CPD: "Stepping Stone" (episode 1.01) CM: "Derailed" (episode 1.01)
Created by	Matt Olmstead
Portrayed by	Jesse Lee Soffer
Other appearances	SVU: "Chicago Crossover" (episode 16.07)
Information
Gender	Male
Occupation	Police officer, CPD Former U.S. Army Ranger
Family	Unnamed father Unnamed mother (deceased) Will Halstead (brother)
Significant other(s)	Erin Lindsay (partner; girlfriend) Allie Corson (ex-girlfriend) Gabriela Dawson (ex-girlfriend)
Police career
Department	Chicago Police Department Intelligence Unit undercover assignment (CF: S2)
Years of service	2000s – Present
Rank	Detective
Badge No.	51163

Portrayed by Jesse Lee Soffer

Detective Jay Halstead previously appeared on Chicago Fire as an undercover cop assigned to take down a local mobster-cum-thug. He requests a transfer to the Intelligence Unit after the assignment ended with him getting shot but successfully arresting the mobster. Chicago P.D. begins a month following his transfer. Aside from the uncover assignment that served as a premise for his transfer to Intelligence, little is known about his early CPD career, except that he was already friends with Antonio Dawson prior to the transfer and that he had joined after serving in the military.

Halstead is the older brother of Will, who is a former plastic surgeon, now ER resident (he changed specialties) and a main character in Chicago Med. Jay had stated that he had "no beneficiaries" and did not speak of any family members, implying that he had no one or was estranged from them. It was eventually revealed with the introduction of his brother that their mother had died of cancer. They are said to be estranged from their father; Jay had not spoken to him for "a year...probably two" while Will, although still maintaining contact with him, refers to him as "the old man" and chose to move in with Jay rather than their childhood home. Will had moved to New York City for medical school and was overseas doing humanitarian work in Sudan but hit a rough patch when his relationship with a girl did not work out. Their mother's death was a sore point as Jay still harbored some lingering resentment over the fact that Will was "out partying" (presumably to get over his ex-girlfriend). Otherwise, the brothers share a close relationship and look out for one another. The Halsteads are from a middle or working class Irish Catholic background, based on the fact that both brothers attended Catholic school and Will's statements about being an altar boy and growing up in Canaryville, a historically Irish neighborhood in the South Side of Chicago. Jay once mentioned to his partner Erin Lindsay that their grandfather has a cabin in rural northern Wisconsin.

Halstead is an United States Army veteran and served with the 3rd Battalion, 75th Ranger Regiment. Through his friend Greg "Mouse" Gurwitch, it is revealed that he was deployed to the notoriously hostile Korangal Valley and that on their last tour of Afghanistan the duo were in the lead Humvee of a convoy which was attacked, resulting in Mouse being given a medical discharge. Through vague references from Mouse and his brother Will and in his conversations with Lindsay, it is implied that his experience in Afghanistan was quite traumatic and that he had difficulty readjusting to civilian life when he first returned home to Chicago. However, he is mostly reticent about his time in the military, once even shutting Mouse down at the mere mention of "Landigal". After leaving the military, he joined the Chicago Police Department. His military background and training is apparent, despite having left the service for quite some time. For example, his apartment is spartan and well-kept and he is skilled in close quarters combat and is able to maintain his concentration on a subject from behind a sniper rifle scope for long periods of time.

Halstead is known for his bluntness, especially when interrogating suspects. In season 1 he sometimes rubbed his superior Detective Sergeant Hank Voight the wrong way for questioning the latter's actions. Despite his calm and collected demeanor, he can be brash in making split-second decisions and has a temper. However, Voight retains him in the Intelligence Unit as he recognized Halstead's skill and dedication to the job. Voight initially treats Halstead as if he was there because he was friends with Dawson but by season 2, it is apparent that he trusts Halstead and regards him highly, as shown in the episode "Push the Pain Away" where he specifically requests for Halstead as the marksman to cover for him despite the heavy presence of SWAT officers. A highly skilled marksman Halstead is proficient with his standard issue Glock 17 and M4 firearms as well as a sniper rifle and has an extensive knowledge of ballistics and explosives. When a situation requires, he (or sometimes with Olinsky, who is also a military veteran) usually serves as the designated sniper to cover the rest of the unit.

Halstead has the tendency to blur the line separating his private and personal life, especially when people close to him are involved. For example, he conducts his own surveillance of Lonnie Rodiger, a young pedophile whom he correctly suspected of murdering young boys, including the younger brother of his high school girlfriend Allie. In the season 2 crossover with Law & Order: Special Victims Unit, when Will was called in for questioning by Detective Benson from the NYPD SVU and Voight as Will knew a victim, Halstead storms into Voight's office and tells them that they will get a written statement from Will and nothing more.

In the pilot episode, it is established that Halstead had been partnered with Erin Lindsay for the past month and they share a close relationship, which has evolved into a more intimate relationship at various times (which they have had to keep secret) but prevented from going any further due to Voight's dislike of "in-house romances". He was presumably the first person Lindsay had confided her past to, in detail. The two struck up a romantic relationship after Erin transfers to a federal task force, as they no longer had to worry about fraternization rules. After her return to the squad, their relationship cooled down on orders from Voight. When Lindsay spiralled out of control in the weeks following Nadia's death, he tried to help her, even after Voight had given up. She returns in the Season 3 premiere after his cover was blown during an undercover operation to nab a drug kingpin. She rescues him in the nick of time and decides to return to Intelligence, where she is again partnered with Halstead. They reconnect and rekindle their relationship. In the episode "You Never Know Who's Who", they go public for the first time by openly kissing while hanging out at Molly's. They generally maintain a professional front when at work; Burgess once told Lindsay that she "[forgets] sometimes that you and Jay are dating, 'cause you guys make it look so easy."

Crossovers

Halstead first appeared on Chicago Fire as a recurring character before becoming a main character on Chicago PD. Within the Chicago franchise, the character has crossed-over to Fire and Med as part of the CPD investigation. He also appeared on Law & Order: Special Victims Unit to assist with cross-jurisdiction cases.

The character was introduced in season 2 as a regular customer at Molly's, a bar jointly run by paramedic Gabriela Dawson and her firefighter colleagues. He had fallen for Gabby but she breaks up with him upon finding out he was a "henchman" of Arthur, a local thug who had threatened to burn down Molly's. Although her brother Antonio tells her that Halstead was actually a cop, Gabby decides to end their relationship, as she had felt betrayed even though she understood that Halstead could not blow his cover. They part on friendly terms after Halstead successfully arrests Arthur and taking a bullet to his shoulder in the process. As a result, he opts out of undercover work and joins Antonio in the Intelligence Unit.

Halstead also appeared in later in the season as the investigating officer of a murder case involving Gabby's colleague at Firehouse 51. One of Lieutenant Severide's men Jeff Clarke was a suspect when the ex-lover of his wife was found dead. The ex-lover turned out to be a loanshark who repeatedly harassed the Clarkes to the point where Clarke has verbally threatened him and had gone to his house with a sniper rifle intending to kill him. Clarke, an Iraq veteran, later admitted that he tried to protect his wife because she had been there for him when he came home from his deployment, to which Halstead replied that he understood and could sympathize.

• Chicago Fire: "A Problem House" (September 24, 2013)
• Chicago Fire: "Prove It" (October 1, 2013)
• Chicago Fire: "Defcon 1" (October 8, 2013)
• Chicago Fire: "A Nuisance Call" (October 15, 2013)
• Chicago Fire: "A Power Move" (October 22, 2013)
• Chicago Fire: "Joyriding" (November 12, 2013)
• Chicago Fire: "Shoved in My Face" (January 7, 2014)
• Chicago Fire: "A Dark Day (1)" (April 29, 2014)
• Law & Order: Special Victims Unit: "Chicago Crossover" (November 12, 2014)
• Chicago Fire: "Arrest in Transit" (November 25, 2014)
• Chicago Fire: "Let Him Die" (January 6, 2015)
• Chicago Fire: "I Am The Apocalypse" (April 7, 2015)
• Chicago Fire: "We Called Her Jellybean" (April 28, 2015)
• Law & Order: Special Victims Unit: "Daydream Believer" (April 29, 2015)
• Chicago Med: "Derailed" (November 17, 2015)
• Chicago Med: "Mistaken" (December 8, 2015)
• Chicago Med: "Malignant" (January 5, 2016)

Awards and decorations

These are the medals fictionally worn by Halstead.

Personal decorations Army Achievement Medal, w/1 bronze oak leaf cluster (2nd award) Unit awards Presidential Unit Citation, w/2 bronze oak leaf clusters (3rd award) Valorous Unit Award, w/3 bronze oak leaf clusters (4th award) Service Awards Army Good Conduct Medal Campaign and service medals National Defense Service Medal Afghanistan Campaign Medal, w/1 bronze service star (2nd award) Global War on Terrorism Expeditionary Medal Global War on Terrorism Service Medal Service and training awards Army Service Ribbon Overseas Service Ribbon

Other accoutrements Combat Infantryman Badge Parachutist Badge Army Expert Marksmanship Badge 75th Ranger Regiment Combat Service Identification Badge Ranger tab

Adam Ruzek

Adam Ruzek
First appearance	CPD: "Stepping Stone" (episode 1.01) CF: "The Nuclear Option" (episode 3.05)
Created by	Matt Olmstead
Portrayed by	Patrick John Flueger
Information
Gender	Male
Family	"Disco Bob" Ruzek (father) Unnamed mother
Significant other(s)	Nicole (ex-fiancée) Wendy (ex-fiancée) Kim Burgess (ex-fiancée)
Police career
Department	Chicago Police Department Intelligence Unit (S1-present) Patrol (temporary) Academy cadet (S1 premiere)
Years of service	2014 – Present
Rank	Officer

Portrayed by Patrick John Flueger

Officer Adam Ruzek made his first appearance during the pilot episode "Stepping Stone", which was broadcast on January 8, 2014. Ruzek is a police officer in the Intelligence Unit of the Chicago Police Department. He has also made recurring appearances in Chicago Fire.

Ruzek parents divorced when he was a child, and he would split time between his father in Beverly and mother in Canaryville. His father, Bob Ruzek (Jack Coleman), better known as "Disco Bob", is a longtime patrol officer with the 26th District who had served with both Voight and Olinsky. Little is known about Ruzek's background as he rarely talks about his personal life and has made no mentions of any siblings, implying that he may be an only child.

In the pilot episode, Ruzek was still in the academy and about to graduate when he was handpicked by Detective Alvin Olinsky for an undercover assignment. The first season sees him trying to adjust to his new role in the Intelligence Unit. Although he was warmly welcomed by the team, his impulsive behavior has occasionally landed him into trouble with Voight and Olinsky as well as his more senior colleagues. His naiveté becomes apparent during his first stakeout, when he repeatedly looks at his phone and makes bathroom breaks. Olinsky temporarily had him transferred to uniformed patrol duty as a warning. Over time, he begins to settle in and becomes more mature and less impetuous. In the season 3 episode "Climbing into Bed", Ruzek has his badge temporarily revoked for going undercover without authorization. Platt pulls some strings to lighten his punishment and Voight assures her that Ruzek was worth the risk.

In season 1, Ruzek was engaged to a woman named Wendy. They are shown to have a close and playful relationship, sending racy photos of each other back and forth. He tries to keep his professional and private lives separate but has difficulty doing so. He tells her that he was assigned to a desk job at district headquarters, which she eventually discovers is not true after he was shot. That relationship fell apart, partially due his job and partially to his growing infatuation with patrol officer Kim Burgess. After Wendy calls off their engagement, Ruzek and Burgess pursue a romantic relationship. They share a playful relationship, with Ruzek often showing public displays of affection even at work. For example, he agrees to help her take "revenge" on Platt. He proposes to her in the season 2 finale and she happily accepts. It gradually becomes apparent to Burgess that Ruzek had commitment issues. She begins to doubt him after learning that he had an ex-fiancée before Wendy. At the end of "Looking Out for Stateville," she calls off the engagement in the same placed he proposed, leaving them both devastated. When Burgess and her partner Sean Roman appear to be flirting, he becomes jealous and their friendship becomes strained.

Crossovers

• Chicago Fire – "The Nuclear Option" (September 30, 2014)
• Chicago Fire – "I Am The Apocalypse" (April 7, 2015)
• Chicago Fire – "Short and Fat" (December 8, 2015)
• Chicago Fire – "The Beating Heart" (January 5, 2016)

Kevin Atwater

Kevin Atwater
First appearance	CPD: "Stepping Stone" (episode 1.01)
Created by	Matt Olmstead
Portrayed by	LaRoyce Hawkins
Information
Nickname(s)	Kev
Gender	Male
Family	Vanessa Atwater (sister)
Police career
Department	Chicago Police Department Intelligence Unit (S2–present) Patrol (S1)
Rank	Officer

Portrayed by LaRoyce Hawkins

Officer Kevin Atwater is a former patrol officer for the CPD. He was partners with Officer Kim Burgess. Atwater takes pride in his job as a patrol officer. Usually, he is the driver of a squad car in a "partnership arrangement". Before he was permanently transferred to the Intelligence Unit, he worked undercover with Alvin Olinsky.

Little is known about Atwater's background. His parents are either absent from his life or deceased and his younger sister Vanessa lives with him as his "ward". Like Joe Cruz from Chicago Fire, Atwater was raised in a gangster-infested neighborhood and had relatives and friends in prison but managed to avoid following them into a life of crime. He is known to the firefighters at 51 for throwing "great parties" and was once roped in to help organize a fundraiser at Molly's to help one of Lieutenant Severide's men.

Both Atwater and Burgess are constant targets of Desk Sergeant Platt's sarcasm. However, they are generally able to laugh it off after shift. There was a running gag where Platt would assign them a different squad car if they talked back to her sarcastic remarks and mishaps would take place. Atwater uses an old connection from his neighborhood to fix the mirror.

At the end of season one he is promoted to Hank Voight's Intelligence unit.

In "Prison Ball", he took a case personally when a 10-year-old girl was murdered by a suspect that she was supposed to be testifying against him.

In "There's My Girl", he is demoted back to being a uniformed officer following a suspect's suicide while in custody, when he left the soda can with the suspect in the interrogation room.

In "Born into Bad News", after the Internal Affairs cleared him of the interrogation room incident, he is quickly promoted back to Intelligence.

Kim Burgess

Main article: Kim Burgess

Sean Roman

Sean Roman
First appearance	CPD: "Call It Macaroni" (2.01) CF: "Apologies Are Dangerous" (3.04)
Last appearance	CPD: "Start Digging" (3.23)
Created by	Matt Olmstead
Portrayed by	Brian Geraghty
Information
Occupation	Police officer, CPD Owner of a private security firm
Significant other(s)	Jenn Cassidy (ex-girlfriend)
Police career
Department	Chicago Police Department Patrol, 21st District (S2-present) Patrol, 31st District (pre-S2)
Rank	Officer

Portrayed by Brian Geraghty

Officer Sean Roman made his first appearance during the first episode of the second season "Call It Macaroni", which was broadcast on September 24, 2014. Roman is a police officer in the Chicago Police Department's 21st District. He has also made recurring appearances in Chicago Fire.

He is a brash patrol officer who partners with Burgess after transferring to the 2-1 from District 31. He transferred out because of his relationship with Jenn Cassidy, who is now a K-9 officer, to avoid breaking fraternization rules. He has his own private security company on the side.

Roman runs a security business and recruits cops who wish to earn extra money after hours. He offers Antonio a job as he knew the latter was going through a divorce and was mortgaging the house to pay for lawyer fees. In "Assignment of the Year", Roman didn't know Asher was a felon, and his immaturity shows in his inexperience. Since Roman was heavily involved with the unit on this case, he had to cooperate with the unit in apprehending Asher's killer, which was his own wife seduced her errand boy, Terry, in committing the murder and allowing herself to escape prosecution.

In "Prison Ball", while he and Burgess unknowingly supervising three juvenile delinquents in the Police Explorers program, Olinsky bumps into them, Roman gives Olinsky attitude and he demands to know what Roman's problem is. It was revealed that years ago, while in District 31, in an undercover sting his partner and him were both shot and Olinsky was there. Roman's partner bled out and died because Olinsky didn't help him and thought it was more important to chase after the shooter. While Roman is having a meltdown, he loses the Police Explorers. Burgess and Roman learn that the Explorers were actually juvenile delinquents, and they stole the commander's squad car.

In "Called in Dead", when Roman and his ex-girlfriend, Jenn Cassidy now a K-9 officer, was arguing outside. Burgess gets shot while investigating a call when she rang the doorbell, which was connected to the trip wire to the shotgun shell. In "Shouldn't Have Been Alone", upon investigation it was revealed that the house itself was booby trapped, was for the police by the murderer, Spencer York. During the investigation, Adam Ruzek and Roman got into a confrontation because Ruzek believes that it was Roman's fault that Burgess is in the hospital. In "We Don't Work Together Anymore", while Burgess is on desk duty to take care of herself, Roman was partners with Sergeant Platt.

In "What Do You Do", Burgess and Roman (while on meal break) investigate a suspicious activity in a warehouse, which was later revealed to be a drug deal. Roman had medical experience when he was forced (held at gunpoint) to help a suspect that was shot and was in serious condition. Roman was seriously injured during the whole ordeal, they was saved eventually when Ruzek, while he and his unit was getting a mandatory taser certification, noticed that Burgess had not called responded to his messages.

In "The Three Gs", Roman gets into a physical altercation with a fellow officer, Officer DeLuca, while deciding on methods of how to save the girl's life, via patrol car to the hospital, when she was shot by a stray bullet in the midst of the gunfight between the suspect with connections to the human trafficking case and Olinsky. He was suspended in the process when DeLuca decided to file a formal complaint against him but it was lifted when Hank Voight forced him to drop the complaint.

Roman's father is a Vietnam veteran who served in the 5th Marine Regiment. In "There's My Girl", it was revealed that Sean has a cousin that works with the stone carving business when the department turns down to carve a stone for Nadia.

Crossovers

He has appeared on Chicago Fire to apprehend suspects.

• Chicago Fire – "Apologies Are Dangerous" (October 14, 2014)
• Chicago Fire – "Three Bells" (February 3, 2015)
• Chicago Fire – "Headlong Toward Disaster" (February 17, 2015)
• Chicago Fire – "Forgiving, Relentless, Unconditional" (March 17, 2015)
• Law & Order: Special Victims Unit – "Daydream Believer" (April 29, 2015)
• Chicago Fire – "Spartacus" (May 12, 2015)
• Chicago Fire – "I Walk Away" (October 27, 2015 )

Sheldon Jin

Portrayed by Archie Kao

Sheldon Jin was the Intelligence Unit's "tech wizard" and analyst. He is highly skilled in using technology to aid the investigations. He is the only member of the team who does not routinely carry a firearm or go out to the field and is usually in his office at the 21st District headquarters, only going to the crime scene when his expertise is needed.

Towards the end of Season 1, it is revealed that an IA officer has been blackmailing Jin into "spying" on the Intelligence Unit, particularly Voight. Jin's father had accumulated a large gambling debt and the IA officer threatened to deport his father back to China if he (Jin) didn't cooperate. Voight was initially furious upon finding out about Jin, although it lessens some after he discovers the link with IA, whom Voight had a history of bad blood with. Jin was honored with a plaque outside the 21st District headquarters.

Trudy Platt

Trudy Platt
First appearance	Chicago Fire: "A Rocket Blasting Off" (2.16) Chicago P.D.: "Stepping Stone" (1.1)
Portrayed by	Amy Morton
Information
Nickname(s)	Tru
Family	Robert Platt (father) Logan Platt (brother)
Spouse(s)	Randy "Mouch" McHolland
Police career
Department	Chicago Police Department 21st District (Desk Sergeant)
Years of service	1980s – present
Rank	Sergeant

Portrayed by Amy Morton

Sergeant Trudy Platt is the desk sergeant at District 21. As the desk sergeant, she is the immediate superior of the district's patrol officers. She was previously a training officer (Antonio Dawson was one of her trainees during his days walking the beat) and had passed the detective's exam twice but had to take a desk job after being shot. She is known for her sarcasm and deadpan humor. She sometimes comes off as cold and heartless, however, she deeply cares for the officers under her command and is shown to go to great lengths to defend them. This is greatly shown when an officer she assigned to guard duty is executed, she feels very guilty but is moved when many officers show up at the district to support the grieving family. At the beginning of season 1, she often tries to bully Officer Kim Burgess into running errands for her. When Burgess finally tells her off, Platt intentionally assigns Burgess and partner Kevin Atwater to a smelly squad car for the day. Burgess's new partner Sean Roman once called Platt a "pain in the ass".

In the episode "Turn the Light Off", it is revealed that Platt comes from a wealthy family. Her family disapproved of her decision to become a police officer. Every now and then, she would bring a "fiancé" to convince her father to give her more money. She convinces Adam Ruzek to play the fiancé and Ruzek takes the opportunity to eat at an expensive restaurant. She also has history with Voight and Olinsky, she once told Antonio that Voight is the best cop in the city, they hold a close working friendship, and despite Olinksy being her subordinate he is shown calling her by her first name.

Meeting firefighter Randy "Mouch" McHolland, Platt hits it off with the man and they're soon in a relationship. He eventually proposes marriage and Platt is sure her dad will spare no cost for his daughter's wedding. Their wedding plans are thrown off course when her father reveals that he was bankrupt due to bad deals and investments gone wrong, meaning that she would have to rely on her own finances. It's also implied that Platt has long relied on her family's money for backup and now has to lean on her usual police pay. They eventually marry in an intimate ceremony at Molly's in the Chicago Fire episode "On the Warpath".

Crossovers

Platt also appears in Chicago Fire. She meets firefighter Randy "Mouch" McHolland in season 2 and they begin a relationship. Mouch has also appeared in Chicago P.D..

• Chicago Fire – "A Rocket Blasting Off" (October 14, 2014)
• Chicago Fire – "Until Your Feet Leave the Ground" (April 8, 2014)
• Chicago Fire – "Real Never Waits" (May 13, 2014)
• Chicago Fire – "Always" (September 23, 2014)
• Chicago Fire – "Just Drive the Truck" (October 7, 2014)
• Chicago Fire – "The Nuclear Option" (October 21, 2014)
• Chicago Fire – "Arrest in Transit" (November 25, 2014)
• Chicago Fire – "Red Rag the Bull" (March 3, 2015)
• Chicago Fire – "Forgive You Anything" (March 10, 2015)
• Chicago Fire – "A Taste of Panama City" (October 20, 2015)
• Chicago Fire – "The Beating Heart" (January 5, 2016)

Alvin Olinsky

Alvin Olinsky
First appearance	Chicago Fire: "You Will Hurt Him" (2.9) Chicago P.D.: "Stepping Stone" (1.1)
Portrayed by	Elias Koteas
Information
Nickname(s)	Al, "O"
Spouse(s)	Meredith Olinsky
Children	Lexi Olinsky (daughter) Michelle Silvana (daughter)
Police career
Department	Chicago Police Department Intelligence Unit Organized Crime (pre-series)
Years of service	1970s-present
Rank	Detective

Portrayed by Elias Koteas

Alvin Olinsky is a seasoned detective in the Intelligence Unit and Voight's most experienced team member. Before joining the force, Olinsky served in the United States Army and was at one time stationed in Vicenza, Italy with the 173rd Airborne Brigade Combat Team. Olinsky mentions in "Called in Dead" that he has 8 confirmed kills in the line of duty. He is one of two military veterans in the Intelligence Unit – the other being Jay Halstead, an Afghanistan veteran – and the duo sometimes exchange banter about each other's service.

In Season 1, Olinsky becomes estranged from his wife, who made him move into the garage for some time, before husband and wife eventually reconciled and he is allowed to move back into the house. When Lexi is falsely accused of possessing marijuana, Olinsky is quick to help his daughter out. Even though she is suspended from school, the two have a father/daughter dance in the garage. When an ill-fated party ends in a gang member's shooting death, Lexi is the only witness. Olinsky tries to prevent Lexi from becoming a witness as it would endanger her life. However, when the shooter refuses to confess, Lexi volunteers.

Because Olinsky's desk is behind Halstead and Atwater, there is a running gag where Voight and the rest of the unit would miss him entering the room. Voight would brief the team and tell them to pass on the information to Olinsky "when he gets here", only for Olinsky to roll out on his chair and say "Here".

Crossovers

Like many Chicago P.D. characters, Olinsky has appeared in Chicago Fire. He was the handler of Leon Cruz, younger brother of CFD firefighter Joe Cruz, and was assigned to make sure Leon, who was undercover in a gang, was safe.

• Chicago Fire – "You Will Hurt Him" (December 3, 2013)

Recurring

Family members

• Justin Voight (Josh Segarra) is the son of Detective Sergeant Henry "Hank" Voight and his late wife Camille. Father and son have a strained relationship due to Justin frequently getting into trouble. He is first mentioned in Chicago Fire when Chief Boden's firefighters rescue a boy and his father who were in a near fatal accident caused by Justin's drunk driving. After finding out that the boy was now a paraplegic, a furious Lieutenant Matthew Casey, whose truck company had responded to the call, files a complaint and is threatened by Detective Voight, who, unbeknownst to anyone else, was undercover as a corrupt cop for IA. The incident would lead to a long-running grudge match between the two. Justin had other run-ins with the law and did a short stint in prison. His father and god-sister Erin Lindsay have tried to set him straight to no avail. Eventually his father forces him to enlist in the U.S. Army to learn discipline and avoid gangs and the bad influence of his recently released former cellmate. After Justin's departure, Voight is accosted by Justin's girlfriend Olive Morgan as she had not heard from the latter for some time (she presumably did not know Voight had forced Justin to enlist on the spot). Upon learning that Olive was pregnant with Justin's child, Voight reaches out to her. Olive is coerced into luring Voight out by vengeful criminals and nearly dies. She and the baby survive the attack. Justin briefly returns to Chicago on leave after hearing about the incident and assures his father that he will declare Olive as his dependent and have her move in with him. Voight gives him Camille's ring for whenever Justin intends to "[make] an honest woman of her". In season 3 it is revealed that Olive gave birth to a boy Daniel.
• Barbara "Bunny" Fletcher (Markie Post) is the biological mother of Detective Erin Lindsay. She is a former drug addict who was negligent of her daughter. Lindsay was eventually rescued by Detective Hank Voight, but not before dabbling in petty crime and being arrested five times. In season 1, Bunny tries to reconnect with her daughter and ask for her forgiveness but Lindsay does not trust her anymore following years of disappointment and false hope. Bunny had another child Teddy Courtney, after her relationship/marriage with Lindsay's biological father ended. In season 3, Lindsay mentions her dumping her fifth husband.

Police officers and CPD employees

• Commander Ronald "Ron" Perry (Robert Ray Wisdom) is the Commanding Officer of the 21st District until his retirement in 2014. He had "six hundred reasons why he didn't want [Voight] to run Intelligence, but one reason why"—because he got results. He is killed by a group of rogue cops in "Born into Bad News".
• Erica Gradishar (Robin Weigert) is Voight's handler from Internal Affairs. She is portrayed to be a pencil-pushing climber keen on using Voight and other uniformed officers to further her own career. She was furious upon finding out that Commander Perry had chosen Voight over Lieutenant Belden from Violent Crimes to be promoted to head the Intelligence Unit. After hitting a brick wall with Voight, she then tries to talk Antonio Dawson into "spying" on Voight but her plan backfires as Dawson had a grudge against her. She had investigated Dawson's former partner Sean Patterson over a minor incident of the wrong paperwork being filed but because of her, what should have been a minor infraction taken care of in-house turned into a full blown investigation resulting in Patterson being fired and his pension withheld; Patterson committed suicide a year later. As a result, she leaves her position (whether she was fired, transferred or forced to resign was not made clear), but not without warning Voight that IA would still be breathing down his neck even after her departure.
• Nadia Decotis (Stella Maeve) was an 18-year-old former escort Detective Erin Lindsay helps. The two of them form a friendship and Lindsay becomes a surrogate older sister to her, likely because of Lindsay's own similar experience. Nadia begins working as an administrative assistant at CPD to gain experience as preparation to enter the police academy. In "The Number of Rats", Nadia was kidnapped from Chicago by a serial killer named Gregory Yates (Dallas Roberts) and found raped and murdered in New York in "Daydream Believer". She was posthumously honored alongside the fallen officers of the 21st District, including Detective Julia Willhite and Sheldon Jin.
• Commander Fischer (Kevin J. O'Connor) is the new Commanding Officer of the 21st District who took over from Commander Perry after his retirement. His appearances are often met with tension from Voight and the rest of the unit. He is blunt and has no qualms about stepping on Voight's toes, compared to the firm but more diplomatic style of Perry.
• Greg "Mouse" Gurwitch (Samuel Hunt) is the Intelligence Unit's tech analyst. After Jin was murdered, the team had no one handling the technical aspects and duties were split between Atwater and Ruzek, both of whom detested working behind the desk or with anything technical. He served in the Rangers alongside Halstead and did two tours in Afghanistan, in the Korangal Valley. During his interview with Sergeant Platt, he mentioned that in Afghanistan, he and Halstead were in the lead Humvee of a convoy when they were bombed. In season 2, the character exhibits signs of PTSD, such as drifting off during a conversation, neglecting his personal appearance, the inability to look at anyone in the eye during a conservation and nervous twitches (restless fingers and stuttering), and had bounced around from job to job before Halstead recommended him to Voight. Voight was initially hesitant to hire him due to his colorful past, which included sniffing nitrous oxide in college and hacking into a DOD comm satellite, and also partly because of Jin's betrayal. After proving his skills, Voight agrees to hire him, much to Atwater and Ruzek's relief. By season 3, he appears more confident and at ease around Voight and the unit.
• Deputy Chief Emma Crowley (Barbara Eve Harris) is one of the highest ranking female police officers and is a friend of Sergeant Platt. Based on her rank, it is presumed that she is likely the area deputy chief overseeing the area District 21 is located in.

Criminals and informants

• Andres Diaz, aka Pulpo (English: "The Octopus") (Arturo del Puerto) is a drug lord and criminal, so nicknamed because he "had [his] hands everywhere". He has dual American and Colombian citizenship and was said to work for a cartel in Medellín. In the series pilot "Stepping Stone", Pulpo is the main person of interest in Voight and the Intelligence Unit's investigations after they discover two dead drug dealers who were beheaded and had their heads displayed prominently nearby.
• Maurice Owens (David Aron Damane) is head of a local gang and one of Voight's informants. He was arrested by patrol officers who witnessed him dealing drugs but Voight bails him out because of his value as an informant. Through Maurice's tip, Voight was able to get a lead on Pulpo in season 1. He also appeared on Chicago Fire in the episode "Let Her Go" and provided Voight with some information about a possible suspect involved in the fire at led to Dr. Hallie Thomas' death. As of season 3, according to Voight, he is in prison.
• Lonnie Rodiger (Matthew Sherbach) was a young pedophile who was suspected of murdering several boys, including Ben Corson, the younger brother of Detective Halstead's high school sweetheart, some years ago. Halstead would park his car outside the Rodiger home in plain view every year on Ben's death anniversary to make his point to Lonnie that he had not forgotten about Ben and the other murder victims, prompting Lonnie's father Phil to file a restraining order against Halstead and Voight to give Halstead a stern warning to back off before things get out of control. Lonnie was found dead in the episode "At Least It's Justice". Halstead was the prime suspect but was exonerated when Phil confessed to killing his son in a fit of rage upon discovering incriminating photos on Lonnie's computer.
• Gregory Yates (né Williams) (Dallas Roberts) was a sociopathic serial killer who targeted women. He was said to responsible for several unsolved murders in New York. A notable aspect of his crimes was his usage of sadistic torture methods with the intention of letting his victims die slow and painful deaths. His last victim prior to his arrest by the Chicago PD Intelligence Unit was Nadia Decotis. In season 3 he escapes police custody and goes on a rampage while on his mission for revenge.

Other

• Steve Kot (Chris Agos) is an Assistant State's Attorney who often prosecutes perpetrators arrested by the Intelligence Unit and sometimes gives them advice on legal matters

Minor characters

• Detective Julia Willhite (Melissa Sagemiller) was the partner of Antonio Dawson. She appeared in both Chicago Fire (1 episode) and Chicago P.D.. The character was killed in the premiere of Chicago P.D. and was the catalyst for Detective Voight's feud with Lieutenant Belden. She was declared DOA after Belden's decision to withhold information backfires and she and Dawson walk into a trap as a result. Her husband Dr. Alec Willhite (Erik Hellman) has also appeared in several episodes of both Fire and P.D.. The couple have two children.
• Lieutenant Bruce Belden (Kurt Naebig) was from the Violent Crimes Unit and Voight's nemesis. In the show's premiere, he withheld information from Voight's team, leading Detectives Willhite and Dawson to walk into a trap and Willhite was killed as a result. Voight blamed Belden for her death. Belden frequently butt heads with Voight over the Pulpo case. It is revealed that Pulpo had played on Belden's over-zealousness to play "by the book" and contradict Voight at any given chance. He is murdered during Pulpo's escape from police custody.
• Charlie Pugliese (Billy Wirth) is a former associate of Erin Lindsay who became a person of interest during an investigation. Voight rescued her from Charlie and she has thus far refused to disclose what really happened, even telling Halstead that he would not want to know the full story. Based on the brief but tense conversations between her and Charlie, it is presumed that he may have taken her in when she was living on the streets and forced her to commit crimes in exchange for food and shelter.
• Teddy Courtney (Lou Taylor Pucci) is the half-brother of Erin Lindsay and son of Bunny. He and Lindsay were once close but lost contact after he "disappeared" from home (Bunny assumed he ran away). A photo of him was found in the basement of a house fire which Lieutenant Severide and 51 had responded to. Severide saw the victim clutching a box of pictures and handed it to Voight's team. While sifting through the photos, Lindsay discovers one of a young Teddy. In a three-way crossover (see "Chicago Crossover"), Intelligence and NYPD's Detective Benson and her SVU team investigate a highly sophisticated pedophile ring-cum-child trafficking syndicate that has operated out of Chicago and New York City for many years. Teddy is found in New York City where he is now a male prostitute. His testimony would lead to the shutting down of the ring.

Crossover characters

Chicago Fire

Main article: List of Chicago Fire characters

• Gabriela "Gabby" Dawson (Monica Raymund) is the younger sister of Antonio Dawson. She is a firefighter with Truck 81 based out of Firehouse 51, several blocks away from her brother's district. During her pregnancy (with Lieutenant Casey's child), she was temporarily assigned to arson. She, Herrmann and Otis jointly own and run Molly's, a small bar frequented by the characters from all three shows of the Chicago franchise.
• Christopher Herrmann (David Eigenberg) is a colleague of Gabby Dawson at 51 and an owner of Molly's. He largely appears in scenes at Molly's, where he serves drinks and chats with patrons.
• Brian "Otis" Zvonecek (Yuri Sardarov) is a colleague of Gabby Dawson and Herrmann at 51 and an owner of Molly's. Like Dawson and Herrmann, his appearances are mainly confined to scenes at Molly's, when he chats with patrons while serving drinks. In the episode "The Docks" he helped Intelligence translate some Russian as the team was investigating some Russian mobsters who spoke no English.
• Randy "Mouch" McHolland (Christian Stolte) is the fiancé of Sergeant Platt and a fellow firefighter of Gabby, Otis and Herrmann at 51. In "What Puts You on That Ledge", he helps Roman and Burgess with a case of an uncooperative squatter who refuses to return the apartment to its owners.
• Peter Mills (Charlie Barnett) is a former firefighter and paramedic at 51. He was the responding paramedic to several of the Intelligence Unit's calls involving injured victims.
• Sylvie Brett (Kara Kilmer) is a paramedic at 51. She has occasionally crossed paths with Intelligence on the job and is friends with Lindsay and Burgess. She and Gabby sometimes hang out with them.

Chicago Med

• Dr. Will Halstead (Nick Gehlfuss) is the brother of Jay Halstead and the senior ER resident in Chicago Medical Center. He was first introduced in the episode "Say Her Real Name" when he returns home to Chicago and was trying to stop a bar fight when the officer called to the incident recognized his last name and called Platt to alert Jay. He initially moves back from New York City after being "kicked out" of a practice by his partners and then gets a job at Chicago Med, only to tell Jay that he would be returning to New York City after his first day. In the Chicago P.D. episode "Get Back to Even", Will tells his brother that he decided to stay as Chicago Med needed ER doctors. He share a close relationship with Jay and are said to be estranged from their father.
• Dr. Daniel Charles (Oliver Platt) is a psychiatrist at Chicago Medical Center. Erin Lindsay was forced by Voight to seek counseling from Dr. Charles as part of the conditions for regaining her badge. Although she makes no secret of her dislike of shrinks, she appreciates Dr. Charles' compassion and genuine desire to help her. Dr. Charles has also aided the team in cases involving psychologically unstable criminals.
• Dr. Natalie Manning (Torrey DeVitto) is a ER pediatrician at Chicago Medical Center. She occasionally assists Voight and the Intelligence Unit on investigating their cases.