Michael Clarke Duncan was 44 in George of the Jungle 2 when he played the character 'Mean Lion (voice)'.
That was over 21 years ago in 2003.
In 2012 he died aged just 54, starring in 59 films in his career, 41 of those after George of the Jungle 2 was first released. If he were alive today he would be 66.
In George of the Jungle 2, I think Michael Clarke Duncan looks: