Six months ahead of its release, Warner Bros. executives and producers are beginning to share their first impressions of director James Wan's Aquaman. Spoiler alert: They're overwhelmingly positive.

"James has done an incredible job with his team," Warner Bros. President Toby Emmerich told Entertainment Weekly. "The film is taking you to a different place and imagining the underwater world in a way you haven’t seen before."

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Jason Momoa's Aquaman first briefly appeared in a silent cameo in 2016's Batman v Superman: Dawn of Justice before reprising his role in last year's Justice League. While critical response to the films were mixed, Momoa's performance was cited as a welcome addition to the growing DCEU with the character's sense of humor providing an excellent contrast to the tonally dark cinematic universe.

"[The film has] got the great action you expect, it’s got a lot of great humor, it works on so many levels," continued Aquaman producer Peter Safran. "It’s a testament to James’ unique vision. I think it’s an extraordinary step in DC Universe that sets it on the right path."

While a first trailer for the upcoming film is expected to debut "in the next few days," a presentation by Warner Bros. at CinemaCon in April showcased the movie's immersive underwater world and teased the central conflict between Aquaman and his long-lost brother Orm, better known to comic readers as Ocean Master.

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"The underwater stuff has never been executed like this before," explained Aquaman co-writer Geoff Johns, who announced this week he is stepping down as DC Entertainment's president and chief creative officer to focus on developing projects for DC and Warner Bros. and his own banner. "The visual effects shots coming in are just beautiful. James can switch modes from horror to big bright colorful action to really emotional scenes. He’s so able to hit all these different genres."

Directed by James Wan, Aquaman stars Jason Momoa, Amber Heard, Patrick Wilson, Willem Dafoe, Yahya Abdul-Mateen II, Temuera Morrison, Dolph Lundgren, and Nicole Kidman. It is scheduled to be released on December 21.