Main Characters Firefighter Randy "Mouch" McHolland 226 main appearances Firefighter Joe Cruz 225 main appearances Deputy District Chief Wallace Boden 248 main appearances Lieutenant Christopher Herrmann 247 main appearances Lieutenant Kelly Severide 239 main appearances Matthew Casey 200 main appearances Paramedic Sylvie Brett 192 main appearances Firefighter Brian "Otis" Zvonecek 137 main appearances Lieutenant Stella Kidd 152 main appearances Gabriela Dawson 138 main appearances Darren Ritter 70 main appearances Blake Gallo 67 main appearances Peter Mills 66 main appearances Paramedic Violet Mikami 52 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 Tlm Campbell 2 guest appearances Mari 2 guest appearances Amy 2 guest appearances Uniformed Cop 2 guest appearances Beth Simmons 2 guest appearances Doctor David Arata 2 guest appearances Hayes 2 guest appearances Rick Sandoval 2 guest appearances Thurber 2 guest appearances Nurse #1 2 guest appearances Tommy Boylan 2 guest appearances Gatins 2 guest appearances Kristel 2 guest appearances Ramsey 2 guest appearances Dr. Alec Willhite 2 guest appearances Margie Cavanaugh 2 guest appearances Savrin 2 guest appearances Officer Crawford 2 guest appearances Jake Williams 2 guest appearances Gus 2 guest appearances ⇤ « 9 10 11 12 13 14 15 16 17 18 » ⇥