Earlier today we learned that Zack Snyder will officially begin production on the first Justice League movie in April, and the director is already gearing up for DC’s epic superhero team-up. Snyder shared a behind-the-scenes photo from pre-production, featuring Jason Momoa and a few superhero costumes in various stages of completion — including Ezra Miller’s costume for The Flash.

Snyder got a bit sneaky on Twitter, sharing a candid photo of himself with Momoa in a workshop that just happens to have some superhero costumes casually lying around…no big deal:

You’ll notice Ben Affleck’s Batman cowl, and what could be Aquaman or Cyborg’s suit there on the left…and oh, what’s that red thing? That’s The Flash’s suit! It is indeed red — it’s a deeper shade like the one Grant Gustin wears on The CW’s series, but this one has a metallic sheen to it, which should look nice when he’s zipping around.

Below that suit, you’ll see a piece of concept art for what appears to be Mera, Aquaman’s love interest who will be played by Amber Heard. On the right-hand side of the photo we can see the beginnings of a costume for a female character, though it’s not immediately clear who this one is for. It could very well be Mera. Click the image below for a closer look:

Zack Snyder, Twitter

Justice League Part One also stars Ray Fisher as Cyborg, Gal Gadot as Wonder Woman and Henry Cavill as Superman, and hits theaters on November 17, 2017. Part Two arrives on June 14, 2019.