- as Lieutenant Matthew „Matt“ Casey
- as Renée Royce
- as Lieutenant Kelly Severide
- as Jose Vargas
- as Joe Cruz
- as Peter Mills
- as Gabriela „Gabby“ Dawson
- as Otis
- as Leslie Elizabeth Shay
- as Mouch
- as Chief Wallace Boden
- as James Whoritsky
- as Lieutenant Christopher Herrmann
- as Leon Cruz
- as Hallie Thomas
- as Mark
- as Corrinne
- as Capp
- as Flaco
- as Hadley
The information provided is incomplete. You can help OMDB by expanding it.
Watch "Chicago Fire > It Ain’t Easy":