The Mousebabe was a male Dibbun who lived at Redwall Abbey. He was a rather ill-behaved young one, often receiving chastisement from Mother Mellus. Mousebabe led Furrtil the mole Dibbun into the woods, where they were captured by Slipp and Blaggut, two searats who were the only survivors after their ship, the Pearl Queen, was retrieved by Finnbarr Galedeep.
The searats had wandered inland, but were lost until they stumbled on the two Dibbuns, who offered to take them to the Abbey. Oak Tom found the two lost Dibbuns, and the searats. He told Tarquin Longleap Woodsorrel, who led all of them back to Redwall. Mousebabe later led the rats to the supposed Redwall "treasure," but really it was just the Dibbuns' playthings. He was good friends with Blaggut, whose name he mispronounced by calling him "Blackguts."
Not to be confused with Mousebabe (Doomwyte).