Sister Fera is a fat grey mouse who works as the Bellringer at Redwall. Fera is a very old mouse, in her high seasons. She is knwon to be very strict with Dibbuns and usually wears a brown habit with glasses perched on the bridge of her nose.
She is friends with the Abbess, Abbot Derio, Brother Frat (Faro the rat), Skipper Milra, and Whippy Branch and his wife and child.
Appearance- Short and fat with grey fur and with green eyes.