He is voiced by Kevin Michael Richardson.
Brutus is a large rat wearing a red cape and a blue vest and grey pants.
The Secret of NIMH 2: Timmy to the Rescue
Brutus becomes the protective guardian of Thorn Valley and Justin's assistant. He act as Timothy's babysitter and gives him the whistle. When Timothy found Jenny, Brutus tries to keep them safe. Timothy and Jenny sneak and Brutus tries to stop them.
When he and the others where captured by brainwashed Martin, Timothy saves them out of the cage and saved his brother Martin from the fire. Later, Brutus and the others return to Thorn Valley and Timothy finally fullfilled his destiny.