Frank Welker was 49 in The Island of Dr. Moreau when he played the character 'Assassimon (voice)'.
That was over 28 years ago in 1996.
Today he is 78, and has starred in 386 movies in total, 227 of those since The Island of Dr. Moreau was released.
In The Island of Dr. Moreau, I think Frank Welker looks: