Cynthia Brisby is a main character in The Secret of NIMH. She is the daughter of Mrs. Brisby. And she is the sister of Martin, Teresa, and Timmy. This article is a stub. You can help Fictional Characters Wiki by expanding it. Retrieved from "https://characters.fandom.com/wiki/Cynthia_(The_Secret_of_NIMH)?oldid=102667" Categories: Mice Mouse Cute characters Niece Daughters Kids Nieces The Secret of NIMH characters Sisters Article stubs MGM Cartoon characters MGM Characters Community content is available under CC-BY-SA unless otherwise noted.