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 Chief Graybill 1 guest appearances Employee 1 guest appearances Owner 1 guest appearances Female Employee 1 guest appearances Jim DeVoe 1 guest appearances Elijah 1 guest appearances Mick 1 guest appearances Jared 1 guest appearances Max 1 guest appearances 13-Year-Old Girl 1 guest appearances 8-Year-Old Brother 1 guest appearances Melanie 1 guest appearances Ellen Porter 1 guest appearances Tim Larson 1 guest appearances Dave Wannstedt 1 guest appearances Laura Martin 1 guest appearances Weston 1 guest appearances Cynthia 1 guest appearances Aaron 1 guest appearances Chain Member 1 guest appearances ⇤ « 90 91 92 93 94 95 96 97 98 99 » ⇥