The Watchers (Los Vigilantes) are an order of fallen angels to which Baraquiel belongs. They refer to the tradition of the Book of Enoch, in which the Watchers descended to Earth and were punished. Their presence expands the cosmology of the gesta (campaign-cycle) toward apocryphal Judeo-Christian sources.
They appear in Uchronic Paris, where Aby identifies them through the Book of Enoch.