It was awesome and quite a different take! I was skeptical when I started it but glad I did.
I just watched Batman and Harley Quinn. That was great as well. Though odd hearing Bernadette from Big Bang Theory voice Harley Quinn.
Batman Ninja definitely went off the rails at one point (you know the part), but even that was deliciously kaijyu/sentai wacky. Everything else was just awesomely Japanese; everything from Two-face's coin to all the merging of Japanese culture with the Batman designs. It just worked on so many levels!!
I saw the Harley one too. Her voice did kinda work. Melissa's real voice isn't that high pitched - you should hear her real voice in the gymnast movie.