James Gunn, writer and director of the off-kilter "Guardians of the Galaxy" films, tussled with various ideas on how to deliver a new take on Superman to the big screen.

Director James Gunn talks about how the new "Superman" film is political and focuses on an "immigrant" who has "basic human kindness."

With Corenswet in place, Gunn recruited Rachel Brosnahan to join the reboot as love interest Lois Lane. British actor Nicholas Hoult — who also auditioned to play Superman — was then cast as Supes’ arch-enemy Lex Luthor.