- as Lieutenant Matthew „Matt“ Casey
- as Otis
- as Lieutenant Kelly Severide
- as Joe Cruz
- as Peter Mills
- as Mouch
- as Gabriela „Gabby“ Dawson
- as Benny Severide
- as Leslie Elizabeth Shay
- as Renée Royce
- as Chief Wallace Boden
- as Jeff Clarke
- as Heather Darden
- as Lieutenant Christopher Herrmann
- as Jay
- as Zoya
- as Ingrid Mills
- as Lt. Spellman
- as Ken Rowe
- as Gail McLeod
- as Detective Antonio Dawson
- as Capp
- as Brother
- as Amy
- as Hadley
- as Big John
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