Mayday,
I think Croc has been black for a long time; though I'm not sure the character was originally conceived to be that way. But he's been black in the comics for quite some time now. It's just with his condition you can't tell that, but they might do a flashback sometimes before the condition worsened and he's black.
I do agree with you that his depiction was over the top and stereotypical, with the most outwardly bestial character being a black person, a black male in particular, but I didn't trip on it because Will Smith and Viola Davis were in the film to counter it. If they hadn't been in the film and it was just Croc I would've been more upset about it. Nothing against the actor and the makeup, but the depiction was too broad.
I also think Diablo's depiction, while not as broad, could be problematic as well. It's just his arc by the end of it, and the actor, helped elevate that character. Someone better versed on Asian stereotypes could probably pick up on Katana as well now that I think about it. The Native American actor playing Slipknot was only in the film for about five minutes, as if not worth even giving more than only handful of dialogue.
So outside of Davis and Smith, non-white characters were poorly developed and perhaps the director went to short hand, stereotypical ideas that he felt the audience might be familiar with in lieu of real character development.
In comparison I thought Flag, Enchantress, and definitely Harley and Joker got a bit more screen time and/or development. Captain Boomerang is the main white character that got short shrift.
That Cyborg as a eunuch thing bothers me as well. Even in brother David F. Walker's short Cyborg run Vince seemed more interested in an old highschool football rival than in returning the attention one of the fine scientists at STAR Labs was giving him. I didn't care for that. To be fair, I haven't read all of Walker's run so maybe he corrected that oversight before he left the book.
