Entitled "Communion," the clip sees a group of soldiers arrest Lex Luthor (Jesse Eisenberg), presumably after the film's final battle, following his conversation with an alien-like creature.
The Internet consensus suggest that the creature is a re-imagining of Steppenwolf, one of the generals of arguably Superman's greatest foe, Darkseid. The alien warlord has been rumored as the main villain for the upcoming Justice League film in 2017.
The short video also gives fans a glimpse of the Mother Boxes, which are essentially sentient supercomputers created by the New Gods, the same race Darkseid belongs to.
source: www.abs-cbnnews.com
