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 Warren Christie Scott Rice Guest Star Melissa Ponzio Donna Robbins Guest Star Yaya DaCosta April Sexton Guest Star Randy Flagler Capp Guest Star Robyn Coffin Cindy Herrmann Guest Star Marina Squerciati Kim Burgess Guest Star Brian Geraghty Sean Roman Guest Star Gordon Clapp Chaplain Orlovsky Guest Star Alexandra Metz Elise Mills Guest Star Anthony Ferraris Tony Guest Star Erica Watson Waitress Guest Star Francisco Posada Gearhead Guest Star Paula Anglin April's Mother 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 Karyn Kusama Director Michael A. O'Shea Writer Jill Weinberger Writer