A new video has just been posted with new Superman Henry Cavill talking his take on the DC shared movie universe. Cavill is asked how he would do the characters in the Justice League movie. He mentions he would do movies for each character leading up to Justice League movie with a threat bringing them all together. He goes on to mention Brainiac and Doomsday as potential villains.
See below for the full quote.
Head on over here to watch the video.
Zack Snyder also recently said something similar.
Henry Cavill on his Justice League take:
If Warner Bros. were to come to me and say "we are planning this and how do you want to do it," - you have to introduce various characters, so it's just not like 'bam' the world is full of god-like superheroes. You would have to find them and introduce them through various movies, and then bring them all together with a major threat that happens. Whether that threat be Doomsday or Braniac or whatever, we don't know, but it would have to be a lot more storyline to have the audience be okay with an introduction to say Brainiac or Doomsday.
Man of Steel hits June 14th!