Fyodor is an extremely smart and manipulated man, being considered a demon by many. He faithfully believes that his terrorist actions are done by God's will, dominating himself a servant of God. His biggest goal is to find the book capable of altering reality, so he can get rid of the sinners of this world, who are known as ability users. He's an extremely cruel man, having committed several crimes. Mostly showing a calm and confident personality, Fyodor doesn't seem to fear his enemies.