Los Angeles: "Justice League Part One" won't release before 2017, but actor Jason Momoa has already unveiled his look for Aquaman in the upcoming movie. As the principal photography will start next month, the former "Game of Thrones" star has dyed his hair blonde to prepare to play the King of the Seven Seas, reports aceshowbiz.com. Momoa revealed his new blonde hair in an Instagram photograph that he shared on Saturday. In the image, he and his trainer held a glass of beer each. "Sometimes you got to train your trainers. He fixes me, I fix him," Momoa captioned the image. The "Justice League" movie, which will be split into two parts, will be directed by "Man of Steel" and "Batman v Superman: Dawn of Justice" helmer Zack Snyder. Besides Momoa, Ben Affleck (Batman), Henry Cavill (Superman), Gal Gadot (Wonder Woman), Ezra Miller (The Flash) and Ray Fisher (Cyborg) are all set to star in the superhero ensemble film. Momoa and Gadot also make appearance in "Batman v Superman" due out Friday in US, before the latter toplines a Wonder Woman solo movie.