Aunt Sponge was enormously fat and very short. She had small piggy eyes, a sunken mouth, and one of those white flabby faces that looked exactly as though it had been boiled.
"Aunt Spiker was enormously fat and very short. She had small piggy eyes, a sunken mouth, and one of those white flabby faces that looked exactly as though it had been boiled." - James and the Giant Peach
Aunt Sponge appears in Roald Dahl's first famous children's book, James and the Giant Peach. Along with her sister, Spiker, she treats her nephew James horribly, making him do all the housework and not allowing him to meet any other children.
In the original story, Spiker and Sponge are eventually seen off by the Giant Peach that also enables James to make his escape. In the 1996 animated film production however, Spiker and Sponge - played by Miriam Margolyes - follow James to New York City, where they are arrested.
Interestingly, we never learn in the original story whether Spiker and Sponge are the sisters of James's father or mother.
Just feast your eyes upon my face, observe my shapely nose!
Aunt Sponge 1
Roald Dahl's James and the Giant Peach