The Rock unsure of 'Shazam!' role
The former WWE wrestler told MTV that he has been offered the parts of the heroic Captain Marvel and the evil Black Adam, adding that he would leave the decision up to the fans.
Shazam! tells the story of Billy Batson, who is selected by a wizard named Shazam to have powers to help save the Earth.
When Batson utters the wizard's name he turns into a grown-up with super powers.