Peter Boyle was 38 in Young Frankenstein when he played the character 'Frankenstein's Monster'.
That was over 49 years ago in 1974.
In 2006 he died aged 71, starring in 77 films in his career, 61 of those after Young Frankenstein was first released. If he were alive today he would be 88.
In Young Frankenstein, I think Peter Boyle looks: