Director Zack Snyder promises a shift in tone from “Batman v Superman”
DC fans still have to wait over a year to see “Justice League” in theaters, but a plethora of new details have emerged after a number of media outlets published experiences from set visits in London.

While fans already knew the stacked hero lineup who would comprise the first big screen adaptation of the famous DC Comics group, Mashable has revealed who they will be squaring off against and who Willem Dafoe will be playing.
Here are 6 of the most interesting nuggets about “Justice League” you need to know.

Steppenwolf will be the main villain

Steppenwolf, a DC Comics supervillain and one of the New Gods, will serve as the main antagonist that the Justice League must defeat in this film. While the character has not been cast yet, his involvement also increases the possibility that Darkseid could appear, as they are related in the comics.

Willem Dafoe is playing Vulko

Dafoe’s involvement was revealed back in April, but now we know he will be playing Nuidis Vulko, a supporting character in the Aquaman comics. Vulko is known to be a very intelligent figure in Atlantis, and eventually served as an adviser to Aquaman when he ruled over the underwater kingdom.

The filmmaker heard the complaints about the dark, heavy tone in “Batman v. Superman” and he is making the appropriate changes for this movie.“Because of what, you know, fans have said, and how the movie [‘Batman v Superman’] was sort of received by some, we have really put the screws to what we thought the tone would be, and — I feel — just crushed it that little bit further.”

It won’t be Part One

Producer Deborah Snyder insists that “Justice League” will be a standalone film, not the setup to an even bigger film down the road.
“We were only ever planning, and we are only doing, ‘Justice League’ — just ‘Justice League,'” she said. “One movie.”

During the visit, reporters saw a scene between Batman (Ben Affleck) and The Flash (Ezra Miller). The scene saw Miller playing The Flash as very perky and jokey, which jived well with Affleck’s completely serious and deadpan delivery.

“Justice League” is set to open in theaters on November 17, 2017.