Aquaman star Amber Heard has shared some insight into how her Mera character has changed since debuting in last year's Justice League from director Zack Snyder.

Mera was last seen trying to aid Arthur Curry, aka the Aquaman (Jason Momoa), as Steppenwolf came to the underwater kingdom of Atlantis to collect a Mother Box, but she seemed somewhat out her depth. Come December's film from James Wan, we'll be seeing more dimensions to Mera, gaining a better understanding as to just who's underneath the warrior's armor, and Heard also hinted she'll be a bit more powerful this time around.

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"It’s interesting to see how different filmmakers approach the same characters," she said to Entertainment Weekly. "We got to meet Mera in an introduction and I think Zack’s approach highlighted what you would want to highlight if you were just meeting her as a commanding warrior."

When asked about a costume change, she replied, "Justice League highlighted her militaristic side. In Aquaman we have a fuller picture, not just her as Mera of Atlantis but also see her struggle in the surface world in civilian clothes. One of my favorite scenes is her first time on the surface world and she’s forced to dress as a normal human."

"We wanted to honor the comic books," she continued, "I wanted to stick with how she’s depicted in the comic books in a superficial way, I wanted to go full comic book as to how she looks, but it’s in the nuance of her personality where I wanted to push the boundaries."

With respect to her power-set, she added, "So there’s an old-fashioned hierarchy in their society that they rule Atlantis. There are different tribe communities within the social hierarchy. Some of us have certain superpowers and I have hydrokinesis — not just making bubbles."

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It'll be eye-catching to see how she uses these abilities, which we didn't really see fully explored last year. What makes it even more intriguing is the fact that, from these words, she may even find herself using them as a land-dweller as she tries to convince Arthur to take the throne.

Arriving Dec. 21, Aquaman stars Jason Momoa as Aquaman, Amber Heard as Mera, Patrick Wilson as Ocean Master, Willem Dafoe as Nuidis Vulko, Yahya Abdul-Mateen II as Black Manta, Temuera Morrison as Thomas Curry and Dolph Lundgren as Nereus.