Jason Momoa has been confirmed by the Hollywood trade sites to be Aquaman, and now Schmoes Know is stating what many have been speculating all along.
They are stating Jason Momoa as Aquaman will look like a surfer type-dude with tribal tattoos, which obviously fits the actor well.
Regarding how Aquaman will be introduced in Batman Vs. Superman and Justice League, as anybody who has seen Man of Steel knows, there was a particular scene early on in the movie that had Henry Cavill save the men on the oil rig. When the rig collapsed/blew up, Cavill was in the water with whales surrounding him. It's stated Aquaman sent the whales to save Superman.
Furthermore, the movie never showed what happened after Cavill was in the water, it just flash-forwarded to Clark Kent on land.
It's stated it's possible Batman Vs. Superman could feature a flashback scene with Henry Cavill swimming back, which would see Aquaman introduced somehow.
Another theory going around is that Aquaman is upset over what went down in Man of Steel regarding the World Engine possibly polluting the oceans; however, the report is leaning more toward the theory that Aquaman attempted to save Clark from the oil rig disaster.
Obviously, it's possible both theories are wrong, as the fans have been speculating both since Man of Steel debuted; so it wouldn't be out of the ordinary for Zack Snyder to go in a completely different direction and do something on his own.
You can watch the Man Of Steel Oil Rig scene here:
(pictured: Jason Momoa as Aquaman fan art)
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter and Tao Okamoto in new character roles for the film. Justice League is to follow directed by Zack Snyder as well.
For more news on the "Man of Steel" and related movies head on over to the Cosmic Book News Superman movie hub.