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 Treasure Hunter 3 guest appearances Queen Cleopatra 3 guest appearances Charles DeWitt 3 guest appearances Chief Don Kilbourne 3 guest appearances IAD Supervising Investigator Frank Silva 3 guest appearances Amber 3 guest appearances Madeline 2 guest appearances Mike Patterson 2 guest appearances Kid 2 guest appearances Madeline's Mother 2 guest appearances Engine Firefighter 2 guest appearances Al Rutkowski 2 guest appearances Mike Duffy 2 guest appearances Greg Duffy 2 guest appearances Anna 2 guest appearances Curtis 2 guest appearances Sophie 2 guest appearances Gary 2 guest appearances Uncle Ray 2 guest appearances Naomi 2 guest appearances ⇤ « 7 8 9 10 11 12 13 14 15 16 » ⇥