Stacy Keach was 51 in Batman: Mask of the Phantasm when he played the character 'Phantasm / Carl Beaumont (voice)'.
That was over 30 years ago in 1993.
Today he is 82, and has starred in 163 movies in total, 104 of those since Batman: Mask of the Phantasm was released.
In Batman: Mask of the Phantasm, I think Stacy Keach looks: