Main Characters Firefighter Randy "Mouch" McHolland 225 main appearances Deputy District Chief Wallace Boden 248 main appearances Firefighter Joe Cruz 224 main appearances Lieutenant Christopher Herrmann 246 main appearances Lieutenant Kelly Severide 238 main appearances Matthew Casey 200 main appearances Paramedic Sylvie Brett 192 main appearances Firefighter Brian "Otis" Zvonecek 137 main appearances Lieutenant Stella Kidd 151 main appearances Gabriela Dawson 138 main appearances Darren Ritter 69 main appearances Blake Gallo 67 main appearances Peter Mills 66 main appearances Paramedic Violet Mikami 51 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 Firefighter Randy "Mouch" McHolland 24 guest appearances Firefighter Joe Cruz 23 guest appearances Firefighter Harold Capp 247 guest appearances Squad 3 Driver Tony Ferraris 205 guest appearances Matthew Casey 4 guest appearances Paramedic Sylvie Brett 1 guest appearances Dispatcher 179 guest appearances Firefighter Brian "Otis" Zvonecek 25 guest appearances Lieutenant Stella Kidd 9 guest appearances Gabriela Dawson 2 guest appearances Darren Ritter 36 guest appearances Blake Gallo 13 guest appearances Paramedic Violet Mikami 12 guest appearances Connie 59 guest appearances Cindy Herrmann 55 guest appearances Paramedic Leslie Shay 3 guest appearances Paramedic Emily Foster 5 guest appearances Detective Antonio Dawson 41 guest appearances Kylie Estevez 39 guest appearances Desk Sergeant Trudy Platt 38 guest appearances ⇤ « 1 2 3 4 5 6 7 8 9 10 » ⇥