With the King of the Seven Seas being portrayed by the large islander Jason Momoa, he still needed his queen, and she has confirmed that she will be in the movie as Queen Mera.
It was rumored that Amber Heard was going to likely take on the role of water sorceress Mera, a powerful, no nonsense character with a knack for kicking butt while still posing that strong motherly instinct throughout her conception as a character. Heard has stated herself that she has already tried on the costume which may help the notion that she will make her debut in Justice League Part 1 after all.
Let’s hope James Wan respects her character as the strong and powerful sea witch she is as well as give her the regal status like she deserves. I’m not too concerned though, are you?