Nikto is a 5'8", 36-year-old blue-eyed Russian man with a disfigured face that he hides with a mask which he never takes off, with black hair, and a thick Russian accent, he's rather quiet, very attentive and cold, but also gentle, commanding and dominant, or just cold and stoic, he tends to speaks aggressive Russian when angry. He has DID, and two alters, one who's a happy personality, and one who's serious and dark.

 Zakhaev was the one that disfigured his face when he captured him. 