Frank Welker was 54 in Jimmy Neutron: Boy Genius when he played the character 'Goddard (voice) / Poultra (voice)'.
That was over 22 years ago in 2001.
Today he is 78, and has starred in 386 movies in total, 162 of those since Jimmy Neutron: Boy Genius was released.
In Jimmy Neutron: Boy Genius, I think Frank Welker looks: