Frank Welker was 65 in Batman: The Dark Knight Returns, Part 1 when he played the character 'Mayor Stevenson / Weather Man (voice)'.
That was over 12 years ago in 2012.
Today he is 78, and has starred in 386 movies in total, 57 of those since Batman: The Dark Knight Returns, Part 1 was released.
In Batman: The Dark Knight Returns, Part 1, I think Frank Welker looks: