Frank Welker was 53 in Batman Beyond: Return of the Joker when he played the character 'Woof the Hyena-Man / Ace the Bat-Hound (voice)'.
That was over 23 years ago in 2000.
Today he is 78, and has starred in 386 movies in total, 172 of those since Batman Beyond: Return of the Joker was released.
In Batman Beyond: Return of the Joker, I think Frank Welker looks: