Dennis Hopper was 18 in Rebel Without a Cause when he played the character 'Goon'.
That was over 69 years ago in 1955.
In 2010 he died aged 74, starring in 216 films in his career, 213 of those after Rebel Without a Cause was first released. If he were alive today he would be 88.
In Rebel Without a Cause, I think Dennis Hopper looks: