Leonardo Dicaprio as Wickham. -Dicaprio like Wickham is intelligent and handsome. Despite the fact that Dicaprio is older than Wickham, he matches a lot of Wickham's personality traits which is why he would be a great person to play him.
"I finally got some credibility in my own household when Leo called me ‘Da Bomb’. I thought ‘Da Bomb’ was a bad thing, but NO." ~ Meryl on working with Leonardo DiCaprio in "Marvin’s Room" Entertainment Weekly, 2000