- as Sylvie Brett
- as Lieutenant Matthew „Matt“ Casey
- as Lieutenant Kelly Severide
- as Christopher Herrmann
- as Gabriela „Gabby“ Dawson
- as Brian Zvonecek
- as Chief Wallace Boden
- as Joe Cruz
- as Randall McHolland
- as Stella Kidd
- as Hank Voight
- as Erin Lindsay
- as Kim Burgess
- as Alvin Olinsky
- as Will Halstead
- as April Sexton
- as Natalie Manning
- as Ethan Choi
- as Maggie Lockwood
- as Mark Jefferies
- as Sharon Goodwin
- as Daniel Charles
- as Anna Turner
- as Emma Crowley
- as Capp
- as Barry Kimball
- as Lt. Alexa Hubble
- as Tony
- as Chout
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