While numerous actors have exit theOne Chicagouniverse over the years , the reasons for their departures are wide-ranging . portray the firefighters , law officer , doctors , and other civil servants central to each series ask a ample rotating cast . However , over a decade - plus of life - and - death small screen play , cast changes have inevitably hap . Whether planned by manufacturer to drive plot , request by role player to prosecute new creative avenue , or result from on or off - cover engagement , the exits hold varied reasons . ButOne Chicago ’s reputation for go back form employee turnover see to it that new characters are systematically infix , go along the drama and entertaining plot line .

One Chicagois the umbrella name for a series of interconnected NBC dramas centered around the fictional hand brake responders of inner - city Chicago . TV manufacturer Dick Wolf co - created all of the showsin theOne Chicagouniverse , and the franchise begin with firehouse - setChicago Firein 2012 . Police dramaChicago P.D.followed in 2014 along with infirmary showChicago Medin 2015 and curtly - live effectual dramaChicago Justicein 2017 . With complex crossovers link storylines and characters acrossChicago Fire , P.D. , andMed , these show provide some of television ’s most ambitious co-ordinated programming .

26Eamonn Walker as Wallace Boden

Chicago Fire

Eamonn Walker ’s exit fromChicago Firewas a shock , as Chief Boden had been part of the serial publication since its first episode . On - screen door , Boden left for the best possible reason : he got a promotionand became the novel Deputy Commissioner of the intact Chicago Fire Department .

Many thespian have exited the One Chicago goggle box shows – Chicago Fire , Chicago PD , and Chicago Med – over the age , including some who could come back .

This maturation also means he can refund toChicago Fireon a guest or recurring basis in the future tense . While Walker did n’t provide any understanding for his departure , showrunner Andrea Newman toldTVLinethat long - running thespian often leave because they want to move on to something else .

Matt Casey in Chicago Fire, Erin Lindsay in Chicago PD, and April Sexton in Chicago Med.

25Kara Killmer as Sylvie Brett

Sylvie Brett was one of the longest - running characters inChicago Fire , having get together Firehouse 51 in time of year 3 as the wind paramedical after the death of Leslie Shay . However , Kara Kilmer felt after 9 season that it was clock time to move on and that she was looking forward to seeing what other chance awaited her ( viaForbes ) . However , Brett fuck off the sendoff she deserved after so many years on the screen , as she married Casey and the two affect to Oregon to focus on their family and their new life together .

24Tracy Spiradakos As Hailey Upton

Chicago PD

Tracy Spiridakos meet Hailey Upton for seven year , originate in season 4 ofChicago PD.However , she decide that it was clip to move on after season 11 . This was not an light decision for Spiridakos to make ( viaNBC Insider ) , butshe felt it was time to move on and search other opportunities . Upton ’s exit mirrored Spiridakos ' genuine - life conclusion , with the character deciding that she require to leave her Book of Job at the Intelligence Unit to explore other opportunities in police force enforcement that might be more fulfilling .

23Nick Gehlfuss As Dr. Will Halstead

Chicago Med

It ’s never easy leave a dear job , and the same rings true for Nick Gehlfuss , who impersonate Dr. Will Halstead onChicago Med . Portraying the doctor for eight seasons , Gehlfuss came to the realization that he had taken Dr. Halstead as far as he could , move the ground for his going ( viaVariety ) . The doer ’s exit was kept enshroud until the episode bare . The finale was shoot in April , about a month and a half after Gehlfuss let the cast and crew know that it was metre for him to move on . WhileHalstead ’s exit suffer more than previously thought , there ’s room for young storylines to now unfold .

22Rome Flynn as Derrick Gibson

Rome Flynn ’s Derrick Gibson was one of the shortest - live characters inChicago Firehistory , appear in only six instalment . On - covert , Gibson ’s reason for leaving was that he was suffering from secession from prescription pills and realized that he needed to get aid . Although Flynn did n’t directly direct the understanding for his departure , he stated that he was pitiful to see Gibson go and enjoyed his metre on the show ( viaVariety ) , suggesting that it might not have been his choice to impart so quickly .

21Dominic Rains as Crockett Marcel

Dominic Rains ' departure as Crockett Marcel inChicago Medwas disappointingbecause Marcel was one of the most passionate characters when it come to patient precaution . However , his way out was unsurprising considering that in the season 9 close , Marcel suffer a withering psychological blow when he learned that a patient ’s Fatherhood had taken his own life history after the boy died of liver disease . Rains did not give an explanation whenDeadlineannounced his exit ; however , after several years in the same role , it ’s probable he wanted to move on to other opportunities .

20Jesse Lee Soffer As Detective Jay Halstead

Chicago P.D.

For nine seasons , Jesse Lee Soffer , who had a main function inChicago P.D. , announce in August 2022 that season 10 would be his last . To excuse his loss , the character was compose off by charge Halstead to Bolivia for a job with the Army .

He returned to make his directorial debut in the season 10 installment “ Dreadlocked . ”

While Soffer was “ proud ” of his time on the show , the reason for his departurewas that he“was ready for more,”according to a program line made inVariety . Despite this , he could n’t quite stay away , as he returned to make his directorial debut in the season 10 instalment “ Dreadlocked . ”

Justin Hartley as Colter Shaw in Tracker.

19Jesse Spencer As Captain Matthew Casey

Australian histrion Jesse Spencer , who portrayed Captain Matthew Casey , leftChicago Firein October 2021 after 10 season and 200 sequence . The understanding behind this decisiveness was thatSpencer was ready for a change after doing television for 18 years . He wanted to use the time off to spend more prison term with his family . " It was a hard determination … but there ’s other thing that I would love to do in the future and there ’s some family line that I need to take care of ” ( viaUs Weekly ) . vow to be back , Spencer returned for two episodes during season 11 , recapitulate the beloved character and adding back appeal to the strike show .

18Yaya DaCosta As April Sexton

In 2021 , mannikin and actress Yaya DaCosta announced her exit fromChicago MedonInstagram . DaCosta ’s decision to move on from the collision show , andthe arriver of another acting opportunity in Lee Butler’sOur Kind of Peoplehappened at the same time , leading her to finalise her choice to move on . “ There was a window opening and a question bell ringer as to whether I should stay or go , and in that window , I descend in honey with Our Kind of People and I jump at the opportunity to play with Lee Daniels again ” ( viaDeadline ) .

17Torrey DeVitto As Natalie Manning

​​In 2021 , another actress that revealed her loss fromChicago MedviaInstagramwas Torrey DeVitto . “It has been such an accolade and pure joyfulness to bring Dr. Natalie Manning to life … but it is now time for her and me to submit out and say goodbye . " In addition to simply wanting to move on , the initial contracts of the originalChicago Medcast were expiringat the conclusion of the sixth season , and the actress solidified her decision to pull up stakes once her character ’s floor had wind up ( viaDeadline ) . fortuitously , the doors were n’t whole close as Natalie made a reappearance in the season 8 coda .

Eddie and Buck in 2x04

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One Chicago