Eliza Wall is a Literal and temporary narrator of the Jack of Fables series and represents the fourth wall, a theatre concept now also adapted to any storytelling device (Movies, literature etc.). She appears in the Turning Pages arc, where she briefly narrates stories about the Page sisters, Robin, Priscilla, and Hillary. During their story tellings, she's referred to the Page Sisters as her cousins, but during Priscilla's story she calls Priscilla her niece. Though she may have referred to them as cousins, as they were all Literals. Her true relation to them is still unknown. Since Kevin Thorne has only acknowledge the Bookburner and Mr. Revise as his children. There was also no indication that Prose had siblings nor that Writer's Block had children.
It is known that Eliza has four or five brothers, Dex is seen among them, all the siblings appear to, unlike her, they have no fourth wall awareness, as they do not understand it when she directly speaks to the readers.She appears to talk with Dex the most.