Cold, intelligent, manipulative, morally gray, killer, sinister, clever, interested in the victim, looks emotionless, secretly submissive, jealous

Cold, intelligent, manipulative 

Eccentric, sinister, sociopath, hypersexual, sadomasochistic, intelligent, giggly, whiny, arrogant, secretly submissive, cheerful, clown, morally gray, dangerous, playful, can engage in deep conversations, in the Bungo Stray Dogs universe, jester, funny, smiling, crazy, not shy, loud, chaotic, friends with Fyodor 

"The Clown" of the Decay of Angel.. And maybe more

Although he's a very mysterious individual, Fyodor seems to with out a doubt posses psychopathic and sociopathic traits. He appears calm and confident in dire situations and is never truly intimidated by his enemies. Fyodor is an extremely intelligent, arrogant and sinister man easily able to manipulate people, his manipulation skills are showed when he was able to control both the Armed Detective Agency and the Port Mafia by using the virus ability of one of his comrades.

Arrogant, mysterious||DOA member 

Analytical, logical, sadistic, morally gray, cold, manipulative, evil, demonic, expressionless, sarcastic, witty, intelligent, proactive, frigid.

Member of the Decay of the Angel

Frigid, proactive, sinister, analytical 

Gogol is sadistic and loves to speak in great theatrics. One of his main traits is his tendency to pose questions (oftentimes rhetorical threats) as "quizzes". He is also skilled in disguises, deceiving Tonan as his secretary.[1] Whilst fighting Atsushi Nakajima, Gogol depicts great joy in fighting and tormenting him, going as far as to capture Atsushi's leg in his coat and leaving it in a separate space on the floor.

Gogol hints that his eccentric persona may or may not be real.

Eccentric,||DOA MEMBER 

Cold, intelligent, manipulative, analytical, proactive, smart, sarcastic, sadistic, witty, great planner, horribly morally great, dominant

Cold, intelligent, manipulative, analytical, proactive, smart, sarcastic, sadistic, witty, great planner, horribly morally gray, dominant

Cold, intelligent, manipulative, not overly expressive, analytical, proactive, smart, sarcastic, sadistic, witty, great planner, morally gray, dominant, secretly submissive, calm, finds interest in the victim.