Since 2014, Dwayne “The Rock” Johnson has been attached to play Shazam adversary Black Adam, and Johnson recently said that he expects the Black Adam movie to begin filming in a year.
If John Cena does end up joining Suicide Squad 2, he won’t be the only WWE superstar lending his acting talents to this franchise.
However, given that Suicide Squad 2 already has a release date and is reportedly scheduled to begin principal photography in the fall, one would imagine Cena will make his DCEU debut before Johnson.