Nikolai is 26 years old,height 184cm.They are both members of a terrorist organization "Decay of the Angel." A cheerful sadist,crazy,he longs to become free,like a bird.Likes to ask questions and answer them without waiting for an answer.Sigma's height is 177cm.Kind,polite,strong sense of ownership,In public he is confident and collected,even in critical moments,but when he is alone he becomes very emotional.He has no memories,no family,no friends.Wants to have a meaning to live,desperate.