First introduced in the 1930s as Captain Marvel, thanks to some complicated trademarks laws, Earth's Mightiest Mortal now goes by the same name as the word that transforms him: Shazam! Born Billy Batson, the small boy was transformed into a godlike being by an ancient wizard. The Big Red Cheese’s powers are fairly similar to Superman’s (flight, strength, invincibility), but Shazam is more innocent and less scientific than Clark.
Perhaps due to him being the spirit of a child within a god, Shazam’s Injustice persona seems to be of the loyal enforcer. Based on early footage, it looks like he helps Superman and Wonder Woman subjugate the Earth, and that occasionally means using his new lightning powers to quell dissent from Batman and Green Arrow. Will he eventually snap, turn on Superman, and have a spectacular brawl like the one in the comic Kingdom Come? We hope so.