AP is reporting Dwayne "The Rock" Johnson will be deciding between two comic book characters in an upcoming DC film. Apparently he will either play Shazam or Black Adam. Shazam is a character who has been introduced since the 1930's to mixed results.
When Billy Baston says the magic word "Shazam!" he turns into Shazam and gains the following powers:
S for the wisdom Solomon
H for the strength of Hecules
A for the stamina of Atlas
Z for the power of Zeus
A for the courage of Achilles
M for the speed of Mercury
When Teth Adam says the magic word "Shazam!" he is transformed into Black Adam and gains the following powers derived from ancient Egyptian gods:
S for the stamina of Shu
H for the swiftness of Heru
A for the strenght of Amon
Z for the wisdom of Zehuti
A for the power of Aton
M for the courage of Mehen