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 Dr. Connor Rhodes 4 guest appearances Alderman Colin Becks 4 guest appearances Ronnie Turner 4 guest appearances 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 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 ⇤ « 3 4 5 6 7 8 9 10 11 12 » ⇥