Jesse Spencer Matthew Casey Actor Taylor Kinney Kelly Severide Actor Charlie Barnett Peter Mills 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 Brian Geraghty Sean Roman Guest Star Marina Squerciati Kim Burgess Guest Star Edwin Hodge Rick Newhouse Guest Star Chris Johnson Harrison Guest Star Randy Flagler Capp Guest Star Jerry MacKinnon Andre Guest Star William Gines Omar Guest Star Anthony Ferraris Tony Guest Star DuShon Monique Brown Connie Guest Star Karen Aldridge Dr. Kendra Perrington Guest Star Matthew C. Yee CFD Matsumoto Guest Star Joe Krowka Chief Hale Guest Star Mike Pusateri Gerry Guest Star Derek Haas Executive Producer Michael Brandt Executive Producer, Writer Jeffrey Nachmanoff Executive Producer Dick Wolf Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Steve Shill Director Ryan Harris Writer