Main Characters Firefighter Joe Cruz 228 main appearances Firefighter Randy "Mouch" McHolland 227 main appearances Lieutenant Christopher Herrmann 249 main appearances Deputy District Chief Wallace Boden 249 main appearances Lieutenant Kelly Severide 242 main appearances Matthew Casey 200 main appearances Paramedic Sylvie Brett 192 main appearances Lieutenant Stella Kidd 154 main appearances Firefighter Brian "Otis" Zvonecek 137 main appearances Gabriela Dawson 138 main appearances Darren Ritter 72 main appearances Blake Gallo 67 main appearances Paramedic Violet Mikami 55 main appearances Peter Mills 66 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 Joe Cruz 23 guest appearances Firefighter Randy "Mouch" McHolland 24 guest appearances Firefighter Harold Capp 251 guest appearances Squad 3 Driver Tony Ferraris 209 guest appearances Matthew Casey 4 guest appearances Paramedic Sylvie Brett 1 guest appearances Dispatcher 179 guest appearances Lieutenant Stella Kidd 9 guest appearances Firefighter Brian "Otis" Zvonecek 25 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 56 guest appearances Paramedic Leslie Shay 3 guest appearances Paramedic Emily Foster 5 guest appearances Detective Antonio Dawson 41 guest appearances Kylie Estevez 41 guest appearances Desk Sergeant Trudy Platt 38 guest appearances ⇤ « 1 2 3 4 5 6 7 8 9 10 » ⇥