Aquaman 2 DCEU Alternate Mera Costume Designs
Water-color images by concept artist Darrell Warner show Amber Heard's Mera in Aquaman and the Lost Kingdom in many costumes. These are similar to Heard's movie looks, although the first is more colorful and the headdress/gown pair is more complex.
Despite not getting a character poster, Mera had a larger part in James Wan's sequel and wasn't killed off, as early reports suggested.