In the Dungeons & Dragons role-playing game, inevitables are extraplanar magical constructs. In the standard cosmology, they are from Mechanus, the Lawful Neutral aligned Outer Plane. Inevitables are built and programmed in automated factories called creche-forges; one of them, mentioned in the Manual of the Planes, is called Neumannus (a reference to Von Neumann machines). Every type of inevitable is designed to enforce a particular type of universal law and will pursue its objective at any cost. In order to fulfill their tasks, they may ally themselves with other creatures or, if necessary, sacrifice themselves.