Civilians are NPCs living in the Monaco world. They are first encountered in Banque Albert. Unlike other enemy types, civilians can be male or female.
Upon recognizing you, civilians will alert the nearest watchman, policeman, doctor, agent, or gendarme to your last-known location. There are usually coins on them, making it extremely difficult to clean out a level without alerting anyone (unless you are the Pickpocket, Gentleman, or Cleaner). Civilians can be killed.