DWAYNE 'THE ROCK' JOHNSON chose to play Black Adam rather than Shazam because the character is ''inherently more interesting''.

The 42-year-old star confirmed he was offered the opportunity to play both characters from the DC Comics, but decided to appear in the role of the villainous Black Adam because there's more depth to his story.

He said: ''I felt ultimately, and this is with all due respect to Shazam/Billy Batson, it's a mythology that I love; it's been with me for almost ten years now; what made me choose Black Adam?

''I just felt Black Adam was inherently more interesting to me because I felt there were more layers to Black Adam starting out as a slave and then ultimately becoming the anti-hero who we enjoy today.''

Before starring as Black Adam, Dwayne appears in 'Furious 7' and recently confessed the latest movie in the franchise felt ''unique'' because of the death of co-star Paul Walker in November 2013.

He reflected: ''Obviously it triggers lots of emotions with the loss of Paul. I think that we have created something very unique and special with cars, big chase sequences, big action, all these things that are happening and exploding.

''Then you still have the core family and I think that resonates with people - black, white, whatever colour you are, religion, it doesn't matter, class, it doesn't matter, it's still family.

''It's still family and that's a very unique bond and foundation to work off of.''