Main Characters Firefighter Randy "Mouch" McHolland 226 main appearances Firefighter Joe Cruz 226 main appearances Lieutenant Christopher Herrmann 248 main appearances Deputy District Chief Wallace Boden 248 main appearances Lieutenant Kelly Severide 240 main appearances Matthew Casey 200 main appearances Paramedic Sylvie Brett 192 main appearances Firefighter Brian "Otis" Zvonecek 137 main appearances Lieutenant Stella Kidd 153 main appearances Gabriela Dawson 138 main appearances Darren Ritter 71 main appearances Blake Gallo 67 main appearances Peter Mills 66 main appearances Paramedic Violet Mikami 53 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 Luis 1 guest appearances Leah 1 guest appearances Orosco 1 guest appearances Officer Hartle 1 guest appearances Tactical Team Leader 1 guest appearances Grace 1 guest appearances Gabriel 1 guest appearances Sales Rep 1 guest appearances Derek 1 guest appearances Todd 1 guest appearances Aide 1 guest appearances Worker 1 guest appearances Lucas Carrington 1 guest appearances Miriam Ghorbani 1 guest appearances Ivania Miller 1 guest appearances Stephanie 1 guest appearances Neighbor 1 guest appearances Marvin 1 guest appearances Dale 1 guest appearances Jogger 1 guest appearances ⇤ « 88 89 90 91 92 93 94 95 96 97 » ⇥