Alfred is Coming Back
Another thing that most people seemed to respond to in Batman V. Superman: Dawn of Justice was Jeremy Irons as Alfred. His take was very different from what we had seen previously, especially when compared to Michael Caine. But it worked very well. So, it is probably a good thing that he will be coming back for Justice League. We don't know much about how he will fit in or how big his role in the movie will be, but we know that he is in it. Perhaps he will be helping Batman or the Justice League team members remotely like he did with Bruce at the end of Batman V. Superman? Either way, it'll be nice to see Jeremy Irons back at it.
Diana Prince, aka Wonder Woman, may not have had a lot of screentime in Batman V. Superman: Dawn of Justice, but whatever screentime she did have made a big impression. Gal Gadot absolutely killed her opportunity to bring the iconic DC Comics superhero to life and she will be a huge factor in Justice League next year. At this point, it seems like she and Bruce Wayne will be partnering up to bring the team together, or unite the seven, as it were. Heading into Justice League we will have a much better idea of what this character can do, because the Wonder Woman solo movie will be released before Justice League lands in theaters. From what we have seen in those trailers alone, we know that she can do some serious damage when she is in Amazon warrior mode. She will be a major player when it comes to saving the world in Justice League, make no mistake about that.
We have seen little flashes, if you will, of Ezra Miller's The Flash on screen in the DCEU so far. There was the odd dream sequence and the security camera footage from Batman V. Superman: Dawn of Justice and his very brief "blink and you'll miss it" cameo in Suicide Squad. He is definitely going to be in Justice League and you can bet his time on screen will be more than brief. In the trailers alone we have seen quite a bit of interaction between Ezra Miller as Barry Allen and Ben Affleck as Bruce Wayne. It is also clear that he is going to offer a bit of comic relief, which could help out in balancing the tone a bit. The Flash is a core member of the Justice League so he will surely be central to the story and not just someone for Batman to joke around with. Plus, this will be our real introduction to the character before The Flash solo movie, so the creative team will want to get everyone on board with this version of Barry Allen.