Andio was a female mouse resident of Redwall Abbey. She was the daughter of Bisky and Spingo, granddaughter of Nokko and Filgo, great-grand niece of Samolus Fixa, niece of Gobbo, Bumbo, and Tingo, and a distant descendant of Gonff, Columbine, Gonff II, Abbess Bryony, and Dandin.
Andio and the other Dibbuns of her time enjoyed mimicking others' peculiarities of speech (specifically moles and hares). She was a minor character; nothing else is known.