Michael J. Fox was 39 in Atlantis: The Lost Empire when he played the character 'Milo James Thatch (voice)'.
That was over 23 years ago in 2001.
Today he is 62, and has starred in 69 movies in total, 25 of those since Atlantis: The Lost Empire was released.
In Atlantis: The Lost Empire, I think Michael J. Fox looks: