With the talk of yet ANOTHER member of the Justice League being rumored in the new Superman vs. Batman film, I thought it would be cool to think up ways that the heroes and metahumans could appear without having to explain EVERYTHING. Keep the same origin premise, just tweak it to keep it grounded. As for the members of the League, I’ve listed them below with the style costumes I’d like to see in the film: I don’t have a problem with the appearances if other characters. It doesn’t mean they’ll all have substantial roles. So far I feel they will just be cameos that lead to something larger.
Wonder Woman: in light of the world threatening Kryptonian battle, a hidden island paradise sends a ambassador to protect the world of man. This can be shown on the news. Hell, Clark could even cover the story as a subplot.
Batman: I’ve already stated what I think this will be–it’s posted on this blog. The costume should be a cross between the above and the New 52 look
Aquaman: if he does show up, it’ll a be to complain about the destruction if Atlantis by the terraforming machine. He will more than likely think it was a man-made machine. Most likely, he will be manipulated iti this by Orn. Keep the New 52 Look.
The Flash: the machine’s destruction caused Barry Allen to be doused in chemicals in his lab and an electrical current from said machine strikes him. It gives him his powers. Keep the New 52 look.
Cyborg: the destruction caused by the machine gives him his injuries. His father, working for Lex Corp steals machinery that is being used to create Metallo to build Cyborg. (If you read my prediction/treatment you’ll understand the Metallo reference). Keep the New 52 Look (post-Forever Evil)
Green Lantern: Hal is in deep space when the Guardians sense a massive disturbance on Earth, they send a new ring to the sector and it chooses John Stewart. Laugh, but the whole Corps showing up wouldn’t be too far off. An extinct species shows up on a recently incorporated planet with MASSIVE power levels? The corp would investigate. While I like the traditional GL uniform for John, I think he should customize his look a bit (being a Marine, he is the only GL that doesn’t really customize himself). Any of the three would work well.
Martian Manhunter: Seeing another powerful alien, he comes out if hiding to aid humanity. We could say that he has been on Earth since the 1930s after a scientist accidentally transported him here. Keep his origin, and keep his New 52 look.
They can even say that the machine has caused humanity to mutate. It gave certain humans powers as a result if the tech going into the atmosphere and the yellow sunlight activates it. It could be the cause if meta humans and the resulting influx if heroes/villains. Superman literally CREATES the DC Universe and Batman suddenly has to deal with more than corrupt city officials, mobsters and costumed idiots. Of course, this doesn’t mean that you make ALL metahumans a result of the machine, but make the influx a problem for humanity. So much so, that we have heroes popping up everywhere to help. A league needed to be created to deal with another threat. A distant war mongering “god” has noticed an influx of superbeings on a distant mudball. He thinks he can use these metahumans as a cheap and dirty army to be bred and used in his war machine. That alien’s name? Darkseid. Boom! You have your justice league film.