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 Susan Weller 5 guest appearances Nick Porter 5 guest appearances Hazmat Lieutenant Zach Torbett 5 guest appearances Terrance Boden 5 guest appearances Naomi Graham 5 guest appearances Nurse 5 guest appearances Vice Detective Antonio Dawson 5 guest appearances Paramedic Lyla Novak 5 guest appearances Nurse 4 guest appearances Ernie 4 guest appearances Tara Little 4 guest appearances Nurse Beth Cole 4 guest appearances Nurse 4 guest appearances Detective Alvin Olinsky 4 guest appearances Jim Jordan 4 guest appearances Violet Jordan 4 guest appearances Brittany Baker 4 guest appearances Wallace Boden, Sr. 4 guest appearances Dr. Prospere 4 guest appearances Suzie Wilder 4 guest appearances ⇤ « 2 3 4 5 6 7 8 9 10 11 » ⇥