Main Characters Firefighter Randy "Mouch" McHolland 226 main appearances Firefighter Joe Cruz 226 main appearances Lieutenant Christopher Herrmann 248 main appearances Deputy District Chief Wallace Boden 248 main appearances Lieutenant Kelly Severide 240 main appearances Matthew Casey 200 main appearances Paramedic Sylvie Brett 192 main appearances Firefighter Brian "Otis" Zvonecek 137 main appearances Lieutenant Stella Kidd 153 main appearances Gabriela Dawson 138 main appearances Darren Ritter 71 main appearances Blake Gallo 67 main appearances Peter Mills 66 main appearances Paramedic Violet Mikami 53 main appearances Paramedic Leslie Shay 46 main appearances Paramedic Emily Foster 37 main appearances Jimmy Borrelli 19 main appearances Paramedic Jessica "Chili" Chilton 14 main appearances Dr. Hallie Thomas 7 main appearances Paramedic Gianna Mackey 9 main appearances
Recurring Guest Characters Nurse 4 guest appearances Dr. Natalie Manning 4 guest appearances Firefighter Jason Kannell 4 guest appearances Dale Cerrutti 4 guest appearances Chief Dave Huffhines 4 guest appearances Bria Jameson 4 guest appearances Mr. Jameson 4 guest appearances Terrance Boden 4 guest appearances Engine Lieutenant Paul Colannino 4 guest appearances Firefighter Jake Cordova 4 guest appearances Jennifer Sheridan 4 guest appearances Boswell 4 guest appearances Dr. Crockett Marcel 4 guest appearances Firefighter Clarence Norwood 4 guest appearances Julie 4 guest appearances Scott 4 guest appearances Cara 4 guest appearances Tracy Herrmann 4 guest appearances Paramedic Chief Jude Robinson 4 guest appearances Andy Darden 3 guest appearances ⇤ « 3 4 5 6 7 8 9 10 11 12 » ⇥