User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-4967138-20120805211615/@comment-4821105-20120808121809

In the Comics, the Wizard Shazam gives him powers. He was chosen to be a champion for good by the powerful wizard Shazam, and gains incredible powers whenever he speaks the world “Shazam”. The powers he has been granted include S for the Wisdom of Solomon, H for the strength of Hercules, A for the stamina of Atlas, Z for the power of Zeus, A for the courage of Achilles, and M for the speed of Mercury.His powers are given by the Greek Gods and like other characters he is avatar of the gods