Following the loss of two pivotal series regulars in season 12, original Chicago Fire cast are no longer on the show. Heading into season 13, only four Chicago Fire actors who have been around since season 1 are still in the cast.

New episodes of Chicago Fire season 13 (which contains 22 episodes) air on Wednesdays at 9 p.m. ET on NBC.

Chicago Fire season 13 picks up six weeks after the events of the season 12 finale, and there's a new chief in town. As some may recall, Boden picked Herrmann as his successor. Instead, Boden's replacement in Chicago Fire season 13 is someone outside Firehouse 51, meaning there is a new addition to the procedural drama's main cast who is the other characters' new leader.

Taylor Kinney As Kelly Severide

Date Of Birth: July 15, 1981

• Active Since: 2006

Actor: Taylor Kinney was born in Lancaster, Pennsylvania, where he attended high school before studying Business Management at West Virginia University. It's unclear when he switched to acting, but Kinney's first TV credit was in 2006 when he was 25 years old. Kinney starred as Luke Gianni in Fashion House, a nighttime soap opera on MyNetworkTV, which is considered his breakout role. However, Kinney truly rose to prominence when he made his debut as Kelly Severide in Chicago Fire on NBC in 2012.

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Character: Kelly Severide has been at Firehouse 51 since the Chicago Fire series premiere. Over the seasons, he has experienced a lot of heartbreak, joyous moments, and everything in between. Kinney returns as Severide in Chicago Fire season 13, and he, unfortunately, has many issues plaguing him this season. Severide is adjusting to the fact that he has a half-brother (Jack Damon) who he has never met until now. Plus, Severide and Kidd's marriage continues to be touch and go.

Miranda Rae Mayo As Stella Kidd

Date Of Birth: August 14, 1990

• Active Since: 2011

Actress: Miranda Rae Mayo was born in Fresno, California, and she began acting from a young age. Mayo would perform in plays at school before moving to Los Angeles to pursue a modeling and acting career. Her TV debut was as a guest star in Law & Order: LA in 2011. Mayo continued landing guest and recurring roles in various shows before landing the part of Stella Kidd in Chicago Fire in 2016, starting in a recurring role in season 4 before getting promoted to series regular in season 5.

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Character: Although Mayo didn't the Chicago Fire cast until season 4, it's hard to imagine the show without Stella Kidd. Kidd is an integral member of Firehouse 51 and remains the lieutenant in charge of Truck 81 in season 13. She has a hard time adjusting to Firehouse 51's new chief as his methods greatly differ from Boden's, who Kidd saw as a father figure. Meanwhile, the question of whether Kidd and Severide will end their marriage remains in Chicago Fire season 13.

David Eigenberg As Christopher Herrmann

Date Of Birth: May 17, 1964

• Active Since: 1989

Actor: David Eigenberg was born in Manhasset, New York, but grew up in Naperville, Illinois, a suburb of Chicago. After high school, Eigenberg served for three years in the United States Marine Corps Reserve. He returned home to pursue an acting career. Eigenberg had small TV roles here and there before he rose to prominence by playing Steve Brady, Miranda Hobbes' main love interest, in Sex and the City​​​​​​.

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Character: As mentioned above, Boden told Christopher Herrmann that he wanted him to replace him as Firehouse 51's chief during the Chicago Fire season 12 finale. However, when season 13 premieres, someone else is taking Boden's spot. So, Herrmann's story in Chicago Fire season 13 focuses on why he didn't become a chief and if he still wants to be one.

Christian Stolte As Randall "Mouch" McHolland

Date Of Birth: October 16, 1962

• Active Since: 1992

Actor: Christian Stolte was born in St. Louis, Missouri. Not much is known about his upbringing, but Stolte began acting in 1992 when he had a small role in the movie The Public Eye​​​​​​. Stolte continued to land small parts in films and TV shows before his breakthrough came when he started playing Randall "Mouch" McHolland in Chicago Fire season 1 in 2012. His role was recurring at first before being promoted to series regular in season 2.

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Character: Like the rest of the firefighters in Firehouse 51, Mouch is adjusting to the new chief in Chicago Fire season 13. Boden has been their leader for over 12 years. So, having someone new come in to replace Boden is a big change, especially for Mouch, who is looking to advance in his career.

Joe Minoso As Joe Cruz

Date Of Birth: September 25, 1978

• Active Since: 2005

Actor: While growing up, Joe Minoso expressed an interest in theater. Minoso later received a bachelor's degree in fine arts at Adelphi University and a Master's in fine arts at Northern Illinois University. He mostly participated in theater before making the jump to TV. Minoso's breakout role is undoubtedly as Joe Cruz in Chicago Fire, a character he has played since season 1.

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Character: Minoso's Joe Cruz is also trying to maneuver the new chief and his new policies in Chicago Fire season 13. However, after the secret that Damon is Severide's half-brother comes out, Cruz worries about his lieutenant. Cruz has a lot of experience playing the role of the older brother, and he's concerned about how Damon working at Firehouse 51 will affect Severide.

Daniel Kyri As Darren Ritter

Date Of Birth: October 10, 1994

• Active Since: 2007

Actor: Daniel Kyri was born and raised in Chicago, and his TV career started at a young age. When Kyri was 14, he was one of the cast of the CBS reality show Kid Nation. Kyri took a step back from Hollywood after Kid Nation and received a bachelor's degree in theater from the University of Illinois at Chicago. The actor then mostly worked in Chicago theater before landing the role of Darren Ritter in Chicago Fire. Kyri was only supposed to be in the One Chicago TV show for a few episodes, but he's now a series regular.

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Character: Darren Ritter is still a member of the Firehouse 51 crew in Chicago Fire season 13. Getting rid of him might cause an uproar since he's one of the most beloved and best characters in Chicago Fire​​​​​​. As for his storyline in season 13, Ritter is still dating Dwayne Morris, a police officer.

Hanako Greensmith As Violet Mikami

Date Of Birth: November 12, 1996

• Active Since: 2018

Actress: Hanako Greensmith was born in New York City, where she graduated from Pace University with a bachelor's degree in musical theater. Greensmith's first TV credit came when she guest-starred as Veronica Hill in an episode of Bull in 2018. However, Greensmith's role as Violet Mikami in Chicago Fire is her most well-known part yet (and her first series regular role).

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Character: After hesitating to commit to a relationship with Sam Carver in Chicago Fire season 12, Violet experiences some regret as she has true feelings for him. However, when Carver returns from his furlough in season 13, he and Violet rekindling their romance won't be so easy. While speaking with Violet and Carver's relationship in Chicago Fire season 13 as "a bit of a dance" as both characters are "finding their footing in new situations that both include and don't include one another."

Jocelyn Hudon As Lyla "Lizzie" Novak

Date Of Birth: November 18, 1994

• Active Since: 2015

Actress: Jocelyn Hudon was originally a dancer as she trained at the National Ballet School of Canada before pursuing an acting career in 2015. Hudon quickly landed many roles, including in several Hallmark movies and TV shows. In early 2024, though, Hudon was cast as Lyla "Lizzie" Novak, Sylvie Brett's replacement in Chicago Fire​​​​​​. Following season 12, Hudon was promoted to a series regular.

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Character: Hudon returns as Novak (who goes by "Lizzie" in the premiere) in the cast of Chicago Fire season 13. She remains the second paramedic for Ambulance 61, behind the PIC (paramedic in charge) Violet. The season 12 finale hinted at a possible romance between Novak and Damon, and the flirtation between the two characters continues in season 13.

Jake Lockett As Sam Carver

Date Of Birth: March 12, 1985

• Active Since: 2011

Actor: Jake Lockett was born in Texas and began acting in 2011 after graduating from Texas A&M University with a degree in aerospace engineering. The actor guest-starred on multiple prominent TV shows, including Hawaii Five-0 and Brooklyn Nine-Nine​​​​​​. Lockett's first steady, recurring role came when he was cast to play Sam Carver in NBC's procedural drama Chicago Fire​​​​​.

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Character: Lockett has been bumped from recurring to a series regular in the cast of Chicago Fire season 13, which is relieving given how Carver's story ended in season 12. During the finale, Carver and Violet got into a fight, which featured Carver telling Violet that he loved her. He took a furlough to deal with his heartbreak, but Carver returns in the Chicago Fire season 13 premiere. Sadly, it will take some time for Carver and Violet to (hopefully) come to their senses and get back together.

Dermot Mulroney As Dom Pascal

Date Of Birth: October 31, 1963

• Active Since: 1986

Actor: Dermot Mulroney was born in Alexandria, Virginia, where he started acting from a young age in local theater. Mulroney later graduated from Northwestern University with a bachelor's degree in communications before moving to Hollywood to pursue a career in acting. He starred in various dramatic films and TV shows, but Mulroney rose to prominence with his role as Michael O'Neal in My Best Friend's Wedding​​​​​​.

Dermot Mulroney was nominated for a Screen Actors Guild Award for his performance in August: Osage County in 2013.

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Character: Mulroney s the cast of Chicago Fire season 13 as Boden's replacement, Dom Pascal. Pascal is Firehouse 51's new chief after serving as a fire chief in Miami for 10 years, and his leadership methods are quite different from Boden's. He is originally from Chicago, but Pascal's past is a bit of a mystery, including his estranged relationship with his wife.

Chicago Fire Season 13 ing Cast & Characters

Michael Bradway as Jack Damon - Michael Bradway reprises his role as Jack Damon, Severide's half-brother and Truck 81 firefighter, in Chicago Fire season 13. Before ing the One Chicago universe, Bradway's credits only include a handful of small films.

KaDee Strickland as Monica Pascal - Monica Pascal, Dom Pascal's wife, is played by KaDee Strickland in the NBC procedural drama. Viewers may recognize Strickland from her role as Charlotte King in ABC's Private Practice.

Eamonn Walker as Wallace Boden - Although Eamonn Walker exited Chicago Fire after season 12, the actor remains as a recurring cast member in season 13 since Boden is the Chicago Fire Department's Deputy Commissioner.

Source: Us Weekly