It’s time for DC Comics fans to take a big heaping spoonful of salt with the latest rumor concerning Batman vs. Superman, since it not only follow months of speculation surrounding the Man of Steel sequel, but centers on one actor who has been rumored for the film for just as long. After prior reports that Jason Momoa (Game of Thrones, Conan the Barbarian) had joined the cast of the movie as a possible Aquaman, the latest rumor claims he has, in fact joined the cast in an official capacity.

Since the report itself is far from official – coming from a “source” of – it should be pointed out that the exact role Momoa has landed is a complete mystery. Since this rumor comes hot on the heels of news that Ray Fisher will appear as Cyborg a.k.a. Victor Stone in some form, there will be plenty who jump on this news as yet more confirmation that Batman vs. Superman is all but an official Justice League team-up.

If that was outright stated by either director Zack Snyder, writer David S. Goyer, or Warner Bros., then Momoa’s casting would be far easier to link to an iconic hero or villain. Prior rumors linked the actor to the part of Doomsday, the alien creature who once killed Superman (more or less). But according to many industry sources, Momoa had the part of Drax the Destroyer in Marvel’s Guardians of the Galaxy all but locked up, choosing not to play yet another emotionless killer; would he jump at the chance now?

Khal Drogo does not appreciate unsubstantiated rumors.

If the most recent rumor is true, then it also means Momoa has been actively lying in interviews after he had potentially signed a contract with WB. It’s possible that Momoa would prefer to deceive as opposed to simply dismissing discussion, but it seems just as likely that the timelines have been confused. Either way, one thing is abundantly clear regarding this and all previous rumors: the role in Batman vs. Superman that he has been eyed for is still a completely mystery.

With Superman’s sequel being woven into the mythology of Batman (Ben Affleck), Wonder Woman (Gal Gadot), and even the gallery of characters that tend to accompany Lex Luthor (Jesse Eisenberg), the possibilities are endless. Given Momoa’s physical appearance and experience, expecting him to play a sizable hero or villain makes sense. But at this point, the likelihood of him playing Luthor’s lackey, Aquaman, or even a Martian Manhunter in disguise are all neck-and-neck. If this rumor proves to be true, that is.

It would seem that Goyer, Snyder, and co-writer Chris Terrio (Argo) have enough balls in the air without worrying about introducing a character like Martian Manhunter, Aquaman, or any other past League member as fans know them. Since the arrival of any alien or Atlantean would tend to have a large impact on the film’s plot, it’s a safe bet WB is thinking long-term.

What are your thoughts on Momoa’s potential in the world of Batman vs. Superman? Do you see him bringing some surprising nuance to an Atlantean king in future films, or a warmer side to a Martian mind-reader? Or – dare we say it – could his appearance in the film be limited to a post-credits tease as Darkseid himself? Only time will tell, but we’ll keep you posted as more substantial details surface.

More: Zack Snyder Talks Batman vs. Superman Story

Batman vs. Superman hits theaters on May 6th, 2016.

Follow Andrew on Twitter @andrew_dyce.