VIDEO: See how Johnny Depp became Whitey Bulger

Johnny Depp has played a lot of strange characters over the years, particularly since he first put on the Captain Jack Sparrow hat back in 2003. And now he's about to add another enduring character to that mix.

This difference this time is that Depp is embodying a real person - the notorious criminal Whitey Bulger for the film Black Mass. It's about Bulger's dirty dealings with the FBI as brought to the screen by director Scott Cooper. We've seen photos and video of Depp in costume and he looks nothing like his normal self, and also honestly not much like the actual Bulger. But it seems this process was even more pronounced on set, according to this behind the scenes featurette.