Michael Clarke Duncan was 42 in Planet of the Apes when he played the character 'Attar'.
That was over 23 years ago in 2001.
In 2012 he died aged just 54, starring in 59 films in his career, 45 of those after Planet of the Apes was first released. If he were alive today he would be 66.
In Planet of the Apes, I think Michael Clarke Duncan looks: