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

Main characters Overview

Name Portrayed by Seasons 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Matthew Casey Jesse Spencer colspan="10" Through episode 5 of season 10. Credited as "Special Guest Star" in the tenth-season finale episode. colspan="2" colspan="2" Kelly Severide Taylor Kinney colspan="14" Gabriela Dawson Monica Raymund colspan="6" colspan="2" colspan="6" Leslie Shay Lauren German colspan="2" colspan="12" Peter Mills Charlie Barnett colspan="3" colspan="11" Christopher Herrmann David Eigenberg colspan="14" Received main billing only in the episodes in which they appeared during season 1. Dr. Hallie Thomas Teri Reeves colspan="13" Wallace Boden Eamonn Walker colspan="12" colspan="1" colspan="1" Brian "Otis" Zvonecek Yuri Sardarov colspan="1" colspan="7" Episode 1 of season 8 only. colspan="6" Randall "Mouch" McHolland Christian Stolte colspan="1" colspan="13" Joe Cruz Joe Minoso colspan="1" colspan="13" Sylvie Brett Kara Killmer colspan="2" colspan="10" Credited as a Series regular until the sixth episode of the twelfth season. colspan="2" Jessica "Chili" Chilton Dora Madison colspan="2" Episodes 1–14 only. colspan="10" Jimmy Borelli Steven R. McQueen colspan="3" colspan="2" Episodes 1–2 of season 5 only. colspan="9" Stella Kidd Miranda Rae Mayo colspan="3" colspan="10" Emily Foster Annie Ilonzeh colspan="6" colspan="2" colspan="10" Blake Gallo Alberto Rosende colspan="7" colspan="5" Episode 1 of season 12 only. colspan="2" Darren Ritter Daniel Kyri colspan="6" colspan="2" colspan="6" Episodes 1–2 of season 14 only. Gianna Mackey Adriyan Rae colspan="8" colspan="1" Through episode 9. colspan="5" Violet Mikami Hanako Greensmith colspan="7" colspan="2" colspan="5" Sam Carver Jake Lockett colspan="10" colspan="2" Lyla Novak Jocelyn Hudon colspan="11" colspan="2" Dom Pascal Dermot Mulroney colspan="12" colspan="2" Sal Vasquez Brandon Larracuente colspan="13" Notes

Matthew Casey

Kelly Severide

Portrayed by Taylor Kinney

Kelly Severide (season 1 – present) is the lieutenant at Firehouse 51 and the officer in charge of Squad 3.

In season 2, Severide is targeted by an arsonist twice before realizing that the arsonist is targeting firefighters. He makes the connection that the arsonist is also a firefighter, most likely Kevin Hadley, but they have no proof, until they eventually catch him in the act and he is arrested. In the episode "A Power Move", Severide spots his father Benny hugging a young woman and believes he is having an affair. Kelly meets Benny who tells him that he will succeed Boden as the new chief of fire house 51. In the episode "No Regrets", Severide confronts the young woman, Katie Nolan, who reveals Benny is her father, making her Severide's younger half-sister. Severide lashes out at Benny, who acknowledges that Severide is right about him and apologizes for not being there for him as a father. Benny decides not to take the job from Boden, and encourages Severide to get to know his half-sister. Kelly goes to find Katie and formally meets his sister for the first time.

In season 3, he struggles with the death of his best friend, Leslie Shay and is not being himself and goes out drinking every night, leaving everyone worried about him. This is until he goes to Vegas for a weekend and meets Brittany Baker, a graphic artist from Florida. Severide returns from Vegas, smiling and happy, and informs the house that he got married in Vegas. They think he is kidding at first, but soon realize he is serious.

In season 4, Severide is demoted from his Lieutenant rank due to accusations of him being a poor leader because of the number of firefighters that have either resigned or been dismissed, despite their valid reasons for leaving. Chief Boden does everything he can to get his position back and tells him to go to a meeting where his leadership skills can be improved. Severide is constantly undermined by Dallas Patterson, his replacement. In the episode "Short and Fat", Severide is promoted again to Lieutenant after Patterson's promotion to Battalion Chief. In the finale, "Superhero", he begins dating Stella Kidd.

In season 6, Stella moves in with Kelly. She tries to be cool with the idea of him dating, but she's still jealous when he sleeps with Brett's friend Hope Jacquinot.

In the season 9 premiere "Rattle Second City", the squad answer a call. Severide is nearly caught in the fire but it saved when Stella comes to his aid. In the episode "A White-Knuckle Panic", Severide and Stella become engaged and in the season 9 finale "No Survivors", they tell the firehouse that they are engaged.

In the season 10 finale "The Magnificent City of Chicago", Severide and Stella get married.

In season 11 episode "Run Like Hell", Severide has the opportunity to work on an arson investigation and gain some rigorous training. In the season 11 finale "Red Waterfall", Stella leaves Chicago to bring her husband back.

In the season 12 finale "Never Say Goodbye", Severide tells Stella that he wants them to start having children, a revelation that Stella wasn't expecting and leaves her in shock. Later he finds out that rookie firefighter, Jack Damon, is his younger paternal half-brother.

Crossover appearances Chicago P.D.: "Chin Check" (January 22, 2014) Chicago P.D.: "At Least It's Justice" (April 2, 2014) Chicago P.D.: "8:30 PM" (April 30, 2014) Chicago P.D.: "Justice" (May 11, 2016) Chicago P.D.: "Don't Bury This Case" (January 3, 2017) Chicago P.D.: "Infection, Part III" (October 16, 2019) Chicago P.D.: "Burden of Truth" (February 26, 2020)

Gabriela Dawson

Portrayed by Monica Raymund

Gabriela "Gabby" Dawson (Seasons 1–6, guest Seasons 7–8) is introduced as the Paramedic EMS in Charge of Ambulance 61, at Firehouse 51. Dawson gets in trouble for not strictly following procedure in order to save lives, which leads to her being written up several times and butting heads with Paramedic EMS Chief Hatcher. She is partnered with Leslie Shay for much of the first two seasons, and they share a close friendship, but their friendship is strained after a call goes bad. Both are well-liked by the all-male crew at 51, who are all very protective of them. She transfers to Truck 81 in season 3 after passing firefighter training.

Off-duty, she runs Molly's, a small bar jointly owned by Otis,and Herrman. The bar is also popular with her brother's colleagues from the 21st District and the staff at Chicago Medical Center, whom the paramedics regularly come into contact with. She is usually in charge of the food and beverage aspects, while Otis and Herrmann deal with the business and marketing aspects.

The younger sister of Detective Antonio Dawson, a main character in spin-offs Chicago P.D. and Chicago Justice, Gabby is well known for being able to hold her own in a largely male-dominated occupation and an all-male firehouse; she and Shay are the only women at 51 until Brett is assigned to Ambulance 61 in season 3.

Dawson shares a close friendship with longtime colleague Matthew Casey even though they are each in relationships with different people. Later, she and new candidate Peter Mills bond over their mutual love for cooking and begin a relationship in secret. When their relationship is brought to light, Casey seems to be jealous and pulls rank to keep them apart at work. She later discovers that Boden had an affair with Mills's mother, and she keeps this knowledge from him. When he finds out that she has known about it and that she still has feelings for Casey, he ends their relationship, but they remain friends. She has a brief relationship with Detective Jay Halstead at the beginning of season 2, but they mutually part ways. Following Casey's near-death accident in the season 2 episode "Not Like This", Dawson and Casey start a very serious romantic relationship, and Casey proposes to her. She later is a candidate at the Fire Academy. She fails her physical exam by several seconds, after injuring her ankle. In season 3, she has passed the Fire Academy. However, her relationship with Casey poses a problem due to fraternization rules, and she is initially assigned to Firehouse 105 in Austin under Casey's nemesis Lieutenant Welch. Welch is against her assignment to his truck company due to his misogyny. He fills the spot, and she is assigned as the candidate on Truck 81, under Herrmann's supervision. During her first few weeks on the job, Casey is extra protective of her, much to Herrmann's frustration, but she eventually settles in. In season 4, she suffers a miscarriage. Her return to duty coincides with Chief Riddle's quest to oust and make an example of Chief Boden so that he can make Fire Commissioner.

In season 5, Dawson decides to foster Louie, the child of one of the victims of a fire that Truck 81 attended, and the decision puts her at odds with Casey, who has doubts about having a child in their lives. Casey moves back in with her again and accepts Louie in their "family". After a close call involving both her and Casey, Dawson begins to consider the fact that if both of them remain at Truck 81, there is a possibility Louie could be orphaned. She decides to return to Ambulance 61 after the spot opens up when Borelli returns to the truck. She and Casey marry in the 100th episode as part of their plans to speed up Louie's adoption. However, Louie's biological father, who has up until then been listed as "unknown", shows up at both their apartment and the firehouse demanding to see his son. Louie eventually moves in with his biological father and paternal relatives.

Dawson and Casey reconnect after Dawson almost loses him in the fire that ends season 5. Dawson meets a girl named Bria in a fire. She finds out her father is addicted to meds and tries to help her, after not talking to Casey about it and instead talking to Severide. Casey finds out what they are up to and is upset. Dawson decides to let Casey help with Bria.

Dawson's old fling, Jake Cordova, comes to the firehouse since Otis is hurt, but things get crazy with Dawson. She doesn't tell Casey right away, which makes him mad when he finds out. When Otis is allowed back on the truck, everything goes back to normal. Dawson gets a call from Bria asking to help her with some "girl problems". She helps Bria get ready for prom. Casey decides they can ride in the truck, so with Stella driving, Bria and her date ride to prom in the truck. While watching the truck pull away, Dawson tells Casey she wants to start trying again. After trying for a while, Dawson wants to get to the doctor. Finding out Dawson has an aneurysm that could burst with pregnancy, Casey and Dawson stop trying. Dawson tells Casey she wants to take the risk, but Casey says no, not wanting to lose her. He brings up adoption, which sets Dawson off since she doesn't want to go through the same thing they did with Louie.

In the last episode, Dawson is offered a job in Puerto Rico, which she turns down at the beginning of the episode. During the episode, Brett and Dawson fight on one of the calls, and then Dawson and Casey fight when they get home. She departs Chicago after season 6 to help with relief work in Puerto Rico. In the Season 7 premiere, she briefly returns to Chicago and says goodbye to Casey. She returned briefly in the Season 8 episode "Best Friend Magic".

Sylvie Brett

Portrayed by Kara Killmer