Timmy Brisby

Timothy Brisby also known as Timmy or Tim is a minor character from the first "Secret of Nimh" film, and the main protagonist from its sequel "The Secret of NIMH 2: Timmy to the Rescue". He is the younger son of Mrs. Brisby and the late Jonathan Brisby. In the first film, Ian Fried did his voice. In the sequel, as he is aging, he is respectively voiced by Andrew Ducote (as a young boy), Alex Strange (as a pre-adolescent), and finally, Ralph Macchio (as a young adult).

Timmy spends most of the first film sick from pneumonia, but all of it in bed, as he hasn't recovered yet.

In the sequel, he was chosen by Nicodemus to save the rats from NIMH. He was first shown in a race with a rabbit and walnut-shell halves with his brother, Martin, until he fell out and took a shortcut, only to land in a trap set by Dr. Valentine.