For his role in Oldboy actor Josh Brolin had to go through a transformation of both mind and body. He was asked to rapidly gain weight, then turnaround and lose it over a weekend. You can view his transformation in a new featurette below:

If you not familiar with Oldboy, it’s the English-language remake of a South Korean cult classic about a druken businessman who is basically kidnapped and held captive for 20 years. Below you will find the official synopsis for the film:

“An advertising executive is kidnapped and held hostage for 20 years in solitary confinement. When he is inexplicably released, he embarks on an obsessive mission to discover who orchestrated his punishment, only to find he is still trapped in a web of conspiracy and torment.”

Oldboy was directed by Spike Lee and also stars Elizabeth Olsen, Sharlto Copley, Michael Imperioli, Samuel L. Jackson, Lance Reddick, Rami Malek, James Ransone. The film is slated to hit theatres on November 27, 2013.

Below you’ll find a behind the scenes look of the film:

(Image: YouTube)