John DiMaggio was 48 in Batman: Gotham by Gaslight when he played the character 'Chief Bullock / Big Bill Dust / Additional Voices (voice)'.
That was over 6 years ago in 2018.
Today he is 55, and has starred in 122 movies in total, 18 of those since Batman: Gotham by Gaslight was released.
In Batman: Gotham by Gaslight, I think John DiMaggio looks: