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 Matthew Del Negro Pat Pridgen Guest Star Kenny Johnson Tommy Welch Guest Star Melissa Ponzio Donna Robbins Guest Star Bree Williamson Beth Guest Star Liz E. Morgan Celia Guest Star Randy Flagler Capp Guest Star Brian Geraghty Sean Roman Guest Star Anthony Ferraris Tony 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 Joe Chappelle Director Michael Gilvary Writer