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 Biker 1 guest appearances Chief Adams 1 guest appearances Director 1 guest appearances Nurse 1 guest appearances Sasha 1 guest appearances Charlie 1 guest appearances Eddie 1 guest appearances Doctor Landis 1 guest appearances Antoine Kennedy 1 guest appearances Billy Nicholson 1 guest appearances Kathy 1 guest appearances Officer Desantos 1 guest appearances Dale 1 guest appearances Theo 1 guest appearances Officer Jackson 1 guest appearances Cop 1 guest appearances Jane Sullivan 1 guest appearances Curtis 1 guest appearances Mother 1 guest appearances Passer-By 1 guest appearances ⇤ « 118 119 120 121 122 123 124 125 126 127 » ⇥