7. Cyborg's Origin Story
Victor Stone stops at S.T.A.R. Labs where his dad Dr. Silas Stone is conducting a study on one of the metal cubes Darkseid's minions left in Metropolis, and as it goes off a powerful wave of energy is unleashed as Darkseid's minions cross into our dimension. Caught in the crossfire is Victor who is burned beyond medical assistance, and in an attempt to save his son's life Dr. Silas fuses Victor with the technology that turns him into Cyborg. Instead of just having Cyborg show up to team meetings; we can see how and why he is becomes a part of the Justice League. Prior to all this it's discussed that the cube was in the wreckage of Superman's battle, Warner Bros. could do a scene that shows one of Darkseid's minions leaving it in Metropolis in the aftermath of the battle with Zod just to bring it full circle.