Things just got more serious after Warner Brothers and DC Films announced that filming for Zack Snyder's "Justice League: Part One" will begin on April 11 and, as an added tease, the director posted a behind-the-scenes photo of the pre-production on his Twitter account.

The photo shows a very comfortably dressed and happy Snyder and "Game of Thrones" alum, Jason Momoa, who plays the powerful King of the Seven Seas, Aquaman, surrounded by props and costumes.

But Wait, There's More!

Take a look at what's in the duo's surroundings. To Momoa's left is the Dark Knight's cowl and behind him, on the table, is a right boot and a helmet that probably match with the costume nearest the Bat-cowl.

Behind Snyder, three distinct costumes stand out along with an artwork that may or may not be Mera, Aquaman's queen-to-be. Since there doesn't seem to be any markings on the black costume, we can only guess to whom it belongs, but it looks like a cross between the "old" Batman costume below and the armored one that Ben Affleck's Bruce Wayne will use to fight against Superman in "Batman v Superman: Dawn of Justice."

Right behind it is an Aquaman costume – and we are quite sure of that because of the belt with the unmistakably Aquaman style "A." Right beside it is The Flash's darker red armor with the lightning bold ears.

There is another dummy at the back that seems to be covered up to the nose area, but could it perhaps be another one of the costumes? Our guess is either Wonder Woman's or Cyborg's armor.

We have already seen concept art and first looks of the participating superheroes in Snyder's take on "Justice League" and other upcoming DC Films productions during CW's "The Dawn of the Justice League" special, which aired on Jan. 19 so you could get a clue from there. Take a look at the more detailed photo below.

"Justice League: Part One" is set for release in November 2017.

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