The image sees Momoa looking fierce with long hair. Sporting armor and tattoos on his body, Momoa stares at the camera. A trident is also seen in the photo, reported Ace Showbiz
"There is only one true King. #unitetheseven," Snyder captioned it.
Momoa, 35, recently said that his character who has the ability to live underwater and talk to sea creatures would not sport blond hair.
Speaking to fans at the Smart Works panel at the Sundance Film Festival in late January, the actor said, "Well, just going off what you've seen so far ma'am, I don't think he is going to be blonde or white."
Starring Henry Cavill as Superman, Ben Affleck as the Caped Crusader, Gal Gadot as Wonder Woman, Jesse Eisenberg as Lex Luthor and Amy Adams as Lois Lane, it is set to hit theatres in the US on March 25, 2016.
The'Aquaman' solo movie, meanwhile, is set for release in 2018.