8. Ocean Master
Okay I admit, this one is just a bit of personal preference on my part because it lends a little bit more credibility to Aquaman. Its widely accepted that Aquaman is the whipping post of the Justice League, and is regarded as the weak link a lot of times. I am by no means innocent of these charges as I myself have made a ridiculous amount of disparaging remarks about the King of Atlantis, and even used his moniker as an insult to members of my social circle, but when you think about it Aquaman is actually kind of a bad ass. Ive even made it my own personal quest to master his move set so as to propose Come on dude, Ill even be Aquaman as a handicap for my friends. Bringing in Arthurs half brother Orm just fits the dark and gritty feel of Injustice, especially when you consider the torn allegiances of the fractured Justice Leaguge and its allies. Of course part of this also depends on whether or not the game would bring in the current incarnation of the character, or the pre-New 52 version. Either one would work seeing as how regardless of whether or not Orm is depicted as human or Atlantian hes still the pissed off half-brother who wants to usurp the throne. Again, this is one that could fit either as story expansion or just a roster update. With there being several power and gadget characters it would be nice to see another member of the sea bring in Atlantian war tactics.