Grandma Wolf, one of the novel’s antagonists, is technically Tommo’s great aunt, but she likes to be called “Grandma” instead. Tommo, Charlie, and Big Joe, however, prefer to call her “Grandma Wolf,” because she reminds them of the wolf in Little Red Riding Hood, thanks to her vicious nature. She moves in briefly with the Peacefuls when the children are young, and is consistently cruel to them, killing Big Joe’s beloved pet mouse and making snide remarks about the boys’ mother, Mrs. Peaceful. Eventually she moves up to the estate, when the Colonel asks her to return as a live-in housekeeper. She had worked for the Colonel before, but had been fired by his wife when it was discovered that Grandma Wolf and the Colonel were actually having an affair. After the Colonel’s wife dies, she becomes the Colonel’s mistress again, and starts practically running the whole estate as a result, making everyone who works there miserable.