Robert C. O'Brien, Zena Bernstein

Mrs. Brisby is a fictional field mouse and the protagonist of the 1982 animated adventure film The Secret of NIMH, directed by Don Bluth. Adapted from the 1971 children's novel, Mrs. Frisby and the Rats of NIMH, in which she is originally named "Mrs. Frisby", she is voiced by Elizabeth Hartman in her final film role, who, by her own accord, made the character sound shy and timid.