This means that future DCU movies and series don’t need to only move the story forward. They can also take things back in time. A period story about a metahuman from 100, 200, or 300 years ago is perfectly acceptable. This opens up possibilities for different sorts of stories in a way that the MCU has largely had to rely on the multiverse to tell.

An A-lister makes an appearance in the new "Superman" movie, in reference to the hero's origin story.

James Gunn's new movie quietly rewrites DC history—and important details help paint a picture of what's to come. The following contains spoilers for Superman.