Peter Weller was 64 in Batman: The Dark Knight Returns, Part 2 when he played the character 'Batman / Bruce Wayne (voice)'.
That was over 11 years ago in 2013.
Today he is 76, and has starred in 63 movies in total, 5 of those since Batman: The Dark Knight Returns, Part 2 was released.
In Batman: The Dark Knight Returns, Part 2, I think Peter Weller looks: