The best jazz player around.
Sure, I get that it's an alternate universe, but it seems like the author has kind a "Batman is really only a violent psycho" bent to his writing, while being weirdly sympathetic to Joker. I wouldn't know about Injustice Superman, since I haven't played it.
I'm always just a little leery when I see terms like SJW used in comics, because that usually means there's going to be some unsubtle politisperging incoming. I mean, I see your point, but it's just too much of a warning sign.
Sure, I don't mind, go ahead.
Yeah the writer does do some "Batman is kind of a super asshole" and there are moments of "that would never work on batman"
but overall, I think it's a good read with some neat ideas.
As for the spoilers, so in this universe Joker captures Jason Todd, just like in the main universe. Harley enjoyed being Jokers sidekick when it was all bank robberies and the like, but with Joker about to kill a literal child, Harley decides she can't be apart of this and leaves him.
Joker does not even notice she leaves, and a few days later he robs a bank, while robbing it he begins barking orders at this blonde bank teller, and I don't remember the exact reasoning, like she's disillusioned with her life and depressed or some shit, but the point is she goes along with it and Joker never realizes this isn't the original Harley.
Oh, there's also a really good line in it I just remembered, when Batman is talking to the original Harley, he tells her essentially. "Didn't you ever wonder why I never went as hard on you as other criminals? Why you were always together in Arkham and never separated? Because you and I are the only two people who know. For as bad as Joker was. He wasn't nearly as bad as he wanted to be."