Superman: Red Son live-action film

In 2017, Jordan Vogt-Roberts pitched a Red Son adaptation to Warner Brothers, as an "offshoot" of the DC Extended Universe with different actors for Superman and Batman, but "was told no." Mark Millar responded by saying that two friends of his had been approached by WB to direct a live-action Red Son. There have been no further developments.

Why It Was Cancelled

 * Vogt-Roberts didn’t like the idea of a Red Son live-action film.