- as Lieutenant Matthew „Matt“ Casey
- as Sergeant Voight
- as Lieutenant Kelly Severide
- as Detective Julia Willhite
- as Peter Mills
- as Joe Cruz
- as Gabriela „Gabby“ Dawson
- as Otis
- as Leslie Elizabeth Shay
- as Mouch
- as Sergeant Pruitt
- as Chief Wallace Boden
- as Lieutenant Christopher Herrmann
- as Nicole Sermons
- as Hallie Thomas
- as Jim Barnes
- as Voight's Handler
- as Officer Elam
- as Steven Goody
- as Zoya
- as Mrs. Leppert
- as Detective Antonio Dawson
- as Capp
- as Gary
- as Esther
- as Stanley Cup Keeper
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