Kei Mikhail Ignatov is an Inspector within Division 1 of the Criminal Investigation Department of the Public Safety Bureau. He is one of the main protagonists of Psycho-Pass 3.

Ignatov is a strong, kind but stoic individual. He is self-disciplined and strict when working with Enforcers. A keen sense of justice prompts him to occasionally act in a rash manner, as when he perceives someone being treated unfairly.