Frank Welker was 54 in Scooby-Doo! and the Cyber Chase when he played the character 'Fred Jones (voice)'.
That was over 23 years ago in 2001.
Today he is 78, and has starred in 386 movies in total, 167 of those since Scooby-Doo! and the Cyber Chase was released.
In Scooby-Doo! and the Cyber Chase, I think Frank Welker looks: