To answer a few questions at once...

[@Crimson Flame], while it is true that these would be alternate DC universes, a vast majority of them rely on the idea of Clark Kent still being Superman, Bruce being Batman, Diana being Wonder Woman and all that. So that would have to remain. 

However, I would like to note that Pitch 2 let's you create your own version of those characters with no continuity to speak of whatsoever. 

But if this doesn't seem like the game setup for you, that's completely understandable. We all have our preferences on what we like to play.

[@Mao Mao] You absolutely could play a neutral alignment character like Selina, yes. I probably should have been clearer about that, but any character that isn't an outright villain would theoretically be fair game.

[@Retired] None of these games would allow OC player characters. I moreso meant that if you wanted to invent new supporting characters, that'd be fine.