I'd probably watch both the English dub and the Japanese dub since both seem like they'll be pretty good .
It's nice to hear Roger Craig Smith as Batman again, though his performance sounds a little different here.
He was also Nightwing in Batman Unlimited and one Lego movie.
Roger Craig Smith is also returning from Batman Unlimited, as is Yuri Lowenthal (though now he's voicing Damian instead of Tim).
I think this is the third time she's played both Harley and Ivy in something.