6) Shazam
Shazam isn’t set to be released until 2019, an agonizing wait considering how excited Dwayne Johnson gets us all every time he talks about taking on the role of Black Adam.
Despite him being attached to the movie though, there’s currently no word on who might play the titular hero, but Justice League might not be a bad place to introduce the character. It’s hard to say how Warner Bros. could go about that, but not if they do what they’ve done with pretty much every other member of the team by having Shazam be an already established hero in this world.
While the League already has plenty of muscle, Shazam’s unique magic based powers would bring a lot to the table, especially in a battle against someone as powerful as Darkseid. His origin story could then be explored after moviegoers have a reason to be interested in him beyond The Rock.