Granny Malone the Rat is an energetic, strong, old rat, who is Rita's grandmother and Mrs. Malone's mother.
Granny always calls Roddy "Tom Jones" (mainly because she thinks that Roddy is Tom Jones, especially when Liam told her that there was a peeping Tom (Roddy) outside).
Granny also kisses a slug.
Granny wears a pink nightgown and black, nerdy-like glasses. She is voiced by Miriam Margolyes.