Background information
Feature films The Secret of NIMH
The Secret of NIMH 2: Timmy to the Rescue (mentioned)
Television programs
Video games
Park attractions
Portrayed by
Portrayed by
Voice Aldo Ray
Performance model
Honors and awards
Character information
Full name
Other names
Personality Reluctant, timid, easily jittery, antagonistic (briefly), irreverent (briefly), suspicious (briefly), mindful, smart, kind-hearted, mild-mannered, caring, mature, protective, reasonable, understanding, sympathetic, sentimental, sensitive, brave, hesitant, worrisome, reverent, helpful, supportive, sweet, uptight, loyal, level-headed, intellectual, valiant, assertive, nice, sensitive, unselfish, likable, laid-back, independent, vivacious, attentive, noble
Appearance Obese rat, tan fur, cream tunic, royal blue cuffs, barefoot
Occupation Jenner's sidekick (formerly)
Alignment Neutral, later Good
Goal To kill Nicodemus (formerly since he don't want to kill Nicodemus in the first place)
To kill Jenner (succeeded)
Home The Rose Bush
Allies Jenner (formerly), Justin, Mrs. Brisby
Enemies Justin (formerly), Nicodemus (formerly), Mrs. Brisby (formerly), Jenner
Likes Nicodemus, his boss teaming up with him (formerly)
Dislikes Jenner threatening to murder Nicodemus
Powers and abilities
Weapons Sword, dagger
Fate Dies after he defeats his ex-boss
Quote "Jonathan Brisby is dead."
"Jenner, you can't kill Nicodemus."

Sullivan was Jenner's minion and the anti-villain 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.

Role In The Film

Sullivan is first seen in the Rose Bush among the Council of Rats. It is here he voices his little concern about moving the Brisby home; stating: "We've got problems of our own, let the lower creatures fend for themselves.".


The Secret of NIMH
The Secret of NIMH
Media: The Secret of NIMH | The Secret of NIMH 2: Timmy to the Rescue ("Bluthless" sequel)

Characters: Mrs. Brisby | The Great Owl | Jeremy | Nicodemus | Mr. Ages | Auntie Shrew | Justin | Jenner | Sullivan | Teresa Brisby | Cynthia Brisby | Martin Brisby | Timothy Brisby | Brutus | Jonathan Brisby | Farmer Paul Fitzgibbons | Mrs. Beth Fitzgibbons | Billy Fitzgibbons | Dragon | Miss Right | Jenny McBride | Cecil | Joseph Valentine | Muriel & Floyd

Songs Flying Dreams | My Life and My Love | Come Make the Most of Your Life | I Will Show the World | Magic Mystery Show | Just Say Yes! | All I Had is Gone