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 Lewis 1 guest appearances Crowd Antagonist 1 guest appearances Alderman Daniel Rivas 1 guest appearances Bob Rezick 1 guest appearances Cody 1 guest appearances Marcell 1 guest appearances Lot Worker 1 guest appearances Employee 1 guest appearances Amanda 1 guest appearances Board Member 1 guest appearances Faculty Member 1 guest appearances Scrapyard Owner 1 guest appearances Woman 1 guest appearances Victim 1 guest appearances Paul 1 guest appearances Victim 1 guest appearances Guard 1 guest appearances Teenager 1 guest appearances Lt. Demblowski 1 guest appearances Joey Sandoval 1 guest appearances ⇤ « 94 95 96 97 98 99 100 101 102 103 » ⇥