Sullivan

Sullivan was Jenner's minion and the tertiary antagonist in The Secret of NIMH, though he doesn't like the latter's idea of killing Nicodemus. He eventually was on Justin's side. He was voiced by the late Aldo Ray.

Personality
Sullivan was the henchrat of Jenner in the beginning. Later, he begins to feel uncomfortable about the plan in killing Nicodemus. During the move of the Brisby home, Jenner threatens him with his sword, holding it to his neck. It was said that Sullivan begins to have a change of heart as soon as he learns Jenner's true colors. After Justin saves Mrs. Brisby, Sullivan throws his sword to him and Jenner slashes him across his ribs, sending him some distance away as he slowly dies. He dies after throwing the dagger into Jenner's back.

Role in Film
He is the henchrat of Jenner.