The following post contains spoilers from Batman V Superman: Dawn of Justice.
Warner Brother has just released a deleted scene from Batman V Superman: Dawn of Justice which features Lex Luthor( Jesse Eisenberg) and the video hints to some of the knightmare sequences Bruce Wayne ( Ben Affleck) had.
The creature holding the grey boxes (which seem to look like motherboxes) is hinted to be Steppenwolf . In the comics, Steppenwolf is a general on Apokolips, Darkseid’s home world. A member of Darkseid’s Elite, the character is an immortal with superhuman strength, speed, endurance and reflexes.
This scene would hint to how Lex ended up in custody .It would also explain why Luthor seems to know about Darkseid’s impending arrival, as heavily implied by Batman’s final scene with the character.
The deleted scene may be in the ultimate edition of Batman V Superman releasing July 27th.