WWE Superstar confirms role as a DC Comics supervillain, but not not which film will feature him
Created in 1945, Black Adam is the arch enemy of Captain Marvel (aka "Shazam;") and also the hero's gone-bad predecessor from Ancient Egypt. He possesses all the superhuman (and magical) powers of Captain Marvel, making him a physical match even to powerful figures like Superman.
While a Shazam movie was among the domain names recently registered by Warner Bros, it's notable that The Rock's reveal did not include a confirmation of which film he'd be appearing in. In recent years, Black Adam has been elevated from a single-hero antagonist to a major nemesis to many heroes across the DC Universe.