Timothy Brisby

Timothy "Timmy" Brisby (voiced by Jesse McCartney) is the youngest son of Mrs. Brisby from The Secret of NIMH and the main protagonist of The Secret of NIMH 2: Timmy to the Rescue. He hardly speaks in the film, as he spends most of his appearances there sick from pneumonia, but all of them in bed. However, he asked that he wanted to come outside with his family, but Mrs. Brisby (his mother) refused because he might catch the fever again.