Mera

YMera Xebella Challa, also known simply as Mera, is a fictional character in the DC Extended Universe. She is based on the character of the same name commonly associated with Aquaman, and is portrayed by Amber Heard. Making her debut in the theatrical release of Justice League, Mera is a princess from the underwater kingdom of Xebel and demonstrates aquatic superpowers. She serves as Arthur Curry / Aquamans main love interest and a foil to his character, much like the comics. The first portrayal of Mera in live-action cinema, Heards performance has mostly received mixed reviews from critics and fans alike.

source: wikipedia.org