Michael Brandt Creator Derek Haas Creator Taylor Kinney Kelly Severide Actor David Eigenberg Christopher Herrmann Actor Joe Minoso Joe Cruz Actor Christian Stolte Randy "Mouch" McHolland Actor Kara Killmer Sylvie Brett Actor Miranda Rae Mayo Stella Kidd Actor Hanako Greensmith Violet Mikami Actor Jocelyn Hudon Lyla Novak Actor Dermot Mulroney Dom Pascal Actor Jake Lockett Sam Carver Actor Michael Bradway Jack Damon Guest Star Greg Finley Scott "Oz" Osbourne Guest Star Tony Nowicki Theo Guest Star Anand Bhatt Doctor Guest Star Averis Anderson Josh Guest Star Josh Marshall Brad Guest Star Steve "Chik" Chikerotis Chief Walker Guest Star Harrison Weger Paulie Guest Star Ryan Hake Ryan Guest Star Abby Gilster Millin Guest Star Emma Wineman Alex Guest Star Jesse Spencer Actor Eamonn Walker Actor Monica Raymund Actor Laura German Actor Charlie Barnett Actor Teri Reeves Actor Merle Dandridge Actor Dick Wolf Executive Producer Peter Jankowski Executive Producer Todd Arnow Executive Producer Andrea Newman Executive Producer Michael Gilvary Executive Producer Arthur W. Forney Executive Producer Sheelin Choksey Director Nancy Kiu Writer Reza Tabrizi Director Matt Earl Beesley Director Brenna Malloy Director Lisa Demaine Director Paul McCrane Director Heather Cappiello Director William Eichler Director