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:

The day was June 24, 2024 and io9 was in Cleveland to watch the filming of James Gunn’s Superman. At the end of a giant battle over the streets of Metropolis, the Man of Steel knelt down to kiss and profess his love to an inanimate object that special effects would later transform into his dog,

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.