Jesse Spencer Matthew Casey Actor Taylor Kinney Kelly Severide Actor Monica Raymund Gabriela Dawson Actor Eamonn Walker Chief Wallace Boden Actor David Eigenberg Christopher Herrmann Actor Joe Minoso Joe Cruz Actor Yuri Sardarov Brian "Otis" Zvonecek Actor Christian Stolte Randy "Mouch" McHolland Actor Kara Killmer Sylvie Brett Actor Dora Madison Jessica "Chili" Chilton Actor Steven R McQueen Jimmy Borrelli Actor Rachel Nichols Jamie Killian Guest Star Brian White Dallas Patterson Guest Star Samuel Hunt Greg Gerwitz Guest Star Randy Flagler Capp Guest Star Nick Gehlfuss Will Halstead Guest Star Jon Seda Antonio Dawson Guest Star Stephen Eugene Walker Nick Duffy Guest Star Anthony Ferraris Tony Guest Star Jaden Klein Kevin Sullivan Guest Star Derek Haas Executive Producer Michael Brandt Executive Producer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Reza Tabrizi Director Jill Weinberger Writer