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.

The new "Superman" movie features three surprising cameos from major stars. Two of the cameos are in quite surprising scenes. The third sets up the next movie in the DC Universe. Here's what happens.