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 Fredric Lehne Chief Ray Riddle Guest Star Randy Flagler Capp Guest Star Andy Ahrens Danny Borrelli Guest Star Brian Geraghty Sean Roman Guest Star Nick Gehlfuss Will Halstead Guest Star Oliver Platt Daniel Charles Guest Star Mark Hengst Roger Maddox Guest Star Stephen Eugene Walker Nick Duffy Guest Star Mindy Bell Suzie Wilder Guest Star Anthony Ferraris Tony Guest Star DuShon Monique Brown Connie Guest Star Charin Alvarez Tricia Guest Star José Santiago Steve Guest Star Erin Noel Grennan NICU Nurse Guest Star Cathleen Coyle Waitress 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 Tom DiCillo Director Sarah Kucserka Writer Veronica West Writer