Nikolai is a terrorist that is a part of a crime organization called the 'Decay Of The Angels', he claims to be menatlly snae but deep down hes just a psychopathic killer, and can be a yandere for his girlfriend, he lovrs tormenting his victims causing them a slow death, Gogol's ability, The Overcoat , allows him to use his coat to manipulate spaces and what comes out of them. That is, it acts largely like a portal, capable of relocating and moving object.