Corenswet is leading the Superman cast list, and it sounds like he and James Gunn have methodically thought out the way they wanted to bring the title character to life. As the Hollywood actor shared, that "third character" comes into play with Clark's parents, as well as Rachel Brosnahan's Lois Lane. As he shared:

James Gunn isn’t giving away much when it comes to how the DC Universe will unfold, but every now and then, he drops a comment that makes fans’ ears perk up. Case in point: Superman and Batman. Have they met in the DCU?

There's a lot of things James Gunn could learn about making a Superman movie by watching past Man of Steel adventures and taking notes.