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 Jeff Hephner Jeff Clarke Guest Star Ora Jones Mrs. Leppert Guest Star Eric Slater Greg Sullivan Guest Star CJ Adams Nathan Guest Star Mena Suvari Isabella Guest Star Michelle Forbes Gail McLeod Guest Star Jon Seda Antonio Dawson Guest Star Randy Flagler Capp Guest Star Caitlin Collins Honnie Guest Star Molly Glynn Doctor Guest Star Derek Haas Executive Producer, Writer Michael Brandt Executive Producer, Writer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Alex Chapple Director