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 Milo 1 guest appearances Chief Benton 1 guest appearances Holtmeyer 1 guest appearances Pearl 1 guest appearances Kathleen 1 guest appearances Beli 1 guest appearances Susannah 1 guest appearances Ginny 1 guest appearances Security Guard 1 guest appearances Prison Guard 1 guest appearances Dustin Caldwell 1 guest appearances Debra Wyatt 1 guest appearances Detective Sorenson 1 guest appearances Phyllis 1 guest appearances Cole 1 guest appearances Patrol Officer 1 guest appearances Mustang Driver 1 guest appearances Bored Young Boy 1 guest appearances Mike Buckley 1 guest appearances Ryan 1 guest appearances ⇤ « 89 90 91 92 93 94 95 96 97 98 » ⇥