Jesse Spencer Matthew Casey Actor Taylor Kinney Kelly Severide Actor Charlie Barnett Peter Mills Actor Monica Raymund Gabriela Dawson Actor Lauren German Leslie Shay 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 Treat Williams Benny Severide Guest Star Jesse Lee Soffer Jay Halstead Guest Star Jeff Hephner Jeff Clarke Guest Star Mike Starr Arthur Guest Star Vedette Lim Devon Guest Star Mena Suvari Isabella Guest Star Michelle Forbes Gail McLeod Guest Star Jon Seda Antiono Dawson Guest Star Eric Slater Greg Sullivan Guest Star Randy Flagler Capp Guest Star Janelle Snow Beth Guest Star John Babbo Griffin Darden Guest Star Andrew Manning Detective Helling Guest Star Jeremy Shouldis Man Guest Star Derek Haas Executive Producer, Writer Michael Brandt Executive Producer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Steve Shill Director Tim Talbott Writer