Brave firefighters, paramedics and rescue personnel of Firehouse 51. Characters are defined by their courage, dedication and tight-knit bond they share. They face high- stakes emergencies with professionalism.

The Intelligence Unit is a team of dedicated and highly skilled detectives from the Chicago Police Department. They are known for their tough, resourceful, and often unorthodox methods of solving cases.

The staff at Chicago Med are highly intelligent and dedicated professionals, often masking soft hearts beneath their focused exteriors. They are healers, thinkers, and the people who stand between life and death every day, navigating the intense pressure of the emergencies.