Hannah is a brown mouse. She is a good friend of Kehaar and has a kind of love/hate relationship with Bigwig who feels she is too small to be of any use in a fight, but her bravery more than makes up for her size. After Kehaar's departure, Hannah tries to learn magic to help her friends on the Down and learns to fly with Scree. Silverweed instead takes her magic into himself to save the Down. Although a mouse featured in the novel, it appeared only briefly, and spoke with a thick Italian accent.