Walt Disney was 37 in Fantasia when he played the character 'Mickey Mouse (segment 'The Sorcerer's Apprentice') (voice)'.
That was over 84 years ago in 1940.
In 1966 he died aged 65, starring in 217 films in his career, 124 of those after Fantasia was first released. If he were alive today he would be 122.
In Fantasia, I think Walt Disney looks: