Mr. Ages
Background information
Feature films The Secret of NIMH
The Secret of NIMH 2: Timmy to the Rescue
Television programs
Video games
Park attractions
Portrayed by
Portrayed by
Animators John Pomeroy
Lorna Pomeroy-Cook
Voice Arthur Malet
Performance model
Honors and awards
Inspiration Cornelius
Character information
Full name
Other names
Personality Antisocial, well-meaning, intelligent, sensible, inventive, busy, pushy, overbearing, judgmental, hypocritical, strict, grumpy, negative, sarcastic, kind, wise, supportive, caring, understanding, sympathetic, protective and fatherly (in the sequel)
Appearance short, chubby grey and white mouse, glasses, cast on left foot
Occupation genius
Alignment Good
Goal To help Mrs. Brisby move her home (succeeded)
Home The broken down tractor (formerly), Thorn Valley
Allies Mrs. Brisby, Timothy Brisby, Justin, Nicodemus, Jonathan Brisby
Enemies Jenner, Sullivan (formerly) Dragon The Farmer Cat, Snake
Likes Being left alone (formerly), Timmy
Dislikes Visitors (formerly), danger,
Powers and abilities
Fate He and the other rats head to Thorn Valley
Quote "Now that is an emergency!"

Mr. Ages is an old wise mouse from The Secret of NIMH. He is a loner who doesn't like visitors and he is shown with a light blue cast on his leg. He is voiced by Arthur Malet, who reprise his role in the sequel. It is revealed in the sequence where Nicodemus shows Mrs. Brisby the past that he was with Jonathan in the laboratory.


  1. Mr.Ages is a small white mouse who primarily prefers to be left alone. He was one of the mice and rats who managed to escape the NIMH research building. He appears to be an expert at fixing and repairing things. His home is an old harvesting plow he has been tinkering with with some side effects being sudden explosions from inside the machine. He is visited by Mrs. Brisby who asks for his help in curing her son Timothy. He tells Her that Timothy is suffering from pneumonia and can't be moved for at least 3 weeks, if moved would result in Timothy's death. He has a blue cast on his left leg from an injury caused when he was attempting to flee the farmer’s cat, Dragon, during an unsuccessful attempt to drug the cat.

Physical Appearance


Role in The Film's

The Secret of NIMH

Mr.Ages helps Mrs. Brisby giving her medicine to help her son Timothy recover from pneumonia.

The Secret of NIMH 2: Timmy to the Rescue



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