You Won’t Recognize Some Of These Actors With Their On-Screen Transformations

Jake Gyllenhaal In Nightcrawler

Typically, Jake Gyllenhaal is filled out for his roles, or, at least, he looks very healthy. That couldn’t have been further from the truth for his part in Nightcrawler. In the film, Gyllenhaal plays a sadistic cameraman who finds pleasure in setting up horrific crimes for the sole purpose of being the first on the scene to capture the story.

Jake Gyllenhaal In Nightcrawler
Andrew H. Walker/Getty Images; Open Road Films
Andrew H. Walker/Getty Images; Open Road Films

To prepare for the role of Louis Bloom, Gyllenhaal decided to lose an astronomical amount of weight, running 15 miles a day and cutting out most foods. The result: a skeletal and scary-looking character that was the perfect fit for the film.