The Mother Boxes
Returning to the Communion clip that was released before Batman v Superman: Dawn of Justice, the Kryptonians had files on Steppenwolf, along with three Mother Boxes. And, as it turned out, there are three Mother Boxes on Earth. The Mother Boxes are essentially the MacGuffins of Justice League. They’re the objects that bring Steppenwolf and his armies to Earth.
The Mother Boxes will figure in both the Justice League timeline and the flashback sequences. After the first war against Darkseid, the Men, the Amazons, and the Atlanteans each keep one artifact.
We saw in Wonder Woman and the Justice League trailer that the Amazons keep their Mother Box in their armory;Â the Atlanteans have theirs hidden (since Steppenwolf will also have some underwater fight scenes); and the Men have buried theirs.
Why did the Men do that? We’re not sure. Maybe they simply buried the Mother Box because they aren’t as advanced as the other races. But their Mother Box will prove to be the most important one of the three.
