Writer/director James Gunn called in a 'favor' to Bradley Cooper to appear in a key role in his new DCU feature.

There’s a new DC universe in town that’s being kick-started by James Gunn’s “Superman” this weekend. Headlined by David Corenswet as the Man of Steel, “Superman” is poised to relaunch the DC universe and usher in a more vibrant, less serious connected world after Zack Snyder’s “Man of Steel” and the resulting DCEU.

Superman is the most powerful superhero in DC Comics, able to go toe to toe with its most powerful villains, like Darkseid and Brainiac. That’s why it’s surprising that his nemesis is Lex Luthor, a man without any superpowers.