Frank Welker was 65 in Batman: The Dark Knight Returns, Part 2 when he played the character 'Mayor Stevenson (voice)'.
That was over 11 years ago in 2013.
Today he is 78, and has starred in 386 movies in total, 50 of those since Batman: The Dark Knight Returns, Part 2 was released.
In Batman: The Dark Knight Returns, Part 2, I think Frank Welker looks: