From Nothing the entire Universe formed through a concentration-based process. It appears as an oily black smoke, a black liquid, or a strange amalgamation of the two. Nothing contains the properties to dissolve (with the exception of Immaterial objects) or create anything. When enough Nothing comes together, it can form a Nithling. The dissolving properties are extremely deadly, as seen during the latter books of the Series, wherein several of the Demenses are completely destroyed by Nothing, until the last book Lord Sunday which shows Nothing's pure destructive power, when it destroys the whole Universe, against the will of Arthur, who was holding all Seven Keys at the time. Nothing is incapable of destroying the Architect (Old and New), or the being holding all seven keys.