Little is known of the fiend Tenebrae. Restricted chronicles held deep within the Oratory’s vaults make reference to them only as the shadowy being behind the construction of Mundi Eversor. The Insequentes Umbra, a unique painting also held in the vaults, depicts them as a cambion standing upon the shoulder of Eversor, wielding a hellish flaming greatsword. The figure is depicted in silhouette with large barbed horns and dragon-like wings. Some scholars dispute whether this depiction of Tenebrae is accurate.