Fyodor is a tall and slim young man with long, dark, and messy hair that reaches his shoulders. His eyes are sharp and of a dark purple color, giving him a tired look. Showing a calm and confident personality most of the time, Fyodor doesn't appear to fear his patients, boasting enough courage to let himself be harmed by them. Despite being extremely arrogant, he is a straightforward and intelligent man with a truly sinister personality.