The Night of the Gloamglozers was the night when the Guardians of Night rose up and cast the librarians out of New Sanctaphrax. Many librarians lost their lives, and the rest fled to an old palace in Undertown. The name "Night of the Gloamglozers" came from the fact that it was the first time that the Guardians of Night appeared in their distinctive robes--black, with the white head of a screaming Gloamglozer on the front.