Jonathan Brisby is the late husband and father of Mrs. Brisby and their four children in The Secret of NIMH. He was the bravest of all the street rats and mice. It is said that without his bravery, none of the rodents would have survived the escape through the ventilation system. Alas, he couldn't save himself from getting killed by the farmer's cat Dragon while drugging him. He had sacrificed himself to save the rodents.